Seikei University   Faculty of Science and Technology   Assistant Professor

2010.9 - 2012.12

Forschungszentrum Dresden-Rossendorf   Institute of Radiochemistry   Posdoc

2008.4 - 2010.8

Tokyo Institute of Technology   Research Laboratory for Nuclear Reactors   Posdoc

2006.4 - 2008.3

A Series of An^VIO₂²⁺ Complexes (An = U, Np, Pu) with N₃O₂-Donating Schiff-Base Ligands: Systematic Trends in the Molecular Structures and Redox Behavior

Tomoyuki Takeyama, Satoru Tsushima, Robert Gericke, Tamara M. Duckworth, Peter Kaden, Juliane März, Koichiro Takao

Inorganic Chemistry   2025.1

Utility of Interchangeable Coordination Modes of N,N′-Dialkyl-2,6-pyridinediamide Tridentate Pincer Ligands for Solvent Extraction of Pd(II) and Zr(IV) from High-Level Radioactive Liquid Waste

Tasuku Orino, Yueming Cao, Ririka Tashiro, Tomoyuki Takeyama, Robert Gericke, Satoru Tsushima, Koichiro Takao

Inorganic Chemistry   2024.12

Reactivity of [3+1+1] Uranyl-DGA Complex as Lewis-Acid Catalyst in Nucleophilic Acyl Substitution of Acid Anhydrides

Shin Akashi, Koichiro Takao

Inorganics   2024.12

Securing Reversibility of UVO2+/UVIO22+ Redox Equilibrium in [emim]Tf2N‐Based Liquid Electrolytes towards Uranium Redox‐Flow Battery

Koichiro Takao, Kazuki Ouchi, Atsushi Komatsu, Yoshihiro Kitatsuji, Masayuki Watanabe

European Journal of Inorganic Chemistry   2024.5

Towards tailoring hydrophobic interaction with uranyl(VI) oxygen for C-H activation

Satoru Tsushima, Jerome Kretzschmar, Hideo Doi, Koji Okuwaki, Masashi Kaneko, Yuji Mochizuki, Koichiro Takao

Chemical Communications   2024

Controlling Mixed-Valence States of Pyridyldiimino-bis(o-phenolato) Ligand Radical in Uranyl(VI) Complexes

Tomoyuki Takeyama, Satoru Tsushima, Koichiro Takao

Dalton Transactions   2024

Fate of Oxidation States at Actinide Centers in Redox‐Active Ligand Systems Governed by Energy Levels of 5 f Orbitals

Tomoyuki Takeyama, Satoru Tsushima, Robert Gericke, Peter Kaden, Juliane März, Koichiro Takao

Chemistry – A European Journal   2023.10

Solid-State Schikorr Reaction from Ferrous Chloride to Magnetite with Hydrogen Evolution as the Kinetic Bottleneck

Masanori Yamamoto, Yota Takamura, Yoshiaki Kokubo, Makoto Urushihara, Nobutake Horiuchi, Wenbin Dai, Yuichiro Hayasaka, Eiji Kita, Koichiro Takao

Inorganic Chemistry   2023.8

Neptunyl(VI) Nitrate Coordination Polymer with Bis(2-pyrrolidone) Linkers Highlighting Crystallographic Analogy and Solubility Difference in Actinyl(VI) Nitrates

Tomoyuki Takeyama, Juliane März, Ryoma Ono, Satoru Tsushima, Koichiro Takao

Inorganics   11 ( 3 )   2023.3

Crystal Structures of Ce(IV) Nitrates with Bis(2-pyrrolidone) Linker Molecules Deposited from Aqueous Solutions with Different HNO3 Concentrations. International journal

Ryoma Ono, Hiroyuki Kazama, Juliane März, Satoru Tsushima, Koichiro Takao

Inorganic chemistry   62 ( 1 )   454 - 463   2023.1

How does chemistry contribute to circular economy in nuclear energy systems to make them more sustainable and ecological?

Koichiro Takao

Dalton Transactions   2023

Utility of redox-active ligands for reversible multi-electron transfer in uranyl(vi) complexes

Tomoyuki Takeyama, Satoru Tsushima, Koichiro Takao

Inorganic Chemistry Frontiers   10 ( 14 )   4028 - 4044   2023

Non-aqueous bonding of leuprorelin to ochratoxin A for peptide-based solid-phase extraction Reviewed

Naoki Yamato, Noriaki Kumagai, Momoha Okahira, Satoru Kosaka, Shuji Kodama, Ryohei Yamamoto, Atsushi Yamamoto, Koichiro Takao, Masanori Yamamoto

Chemical Communications   58   12106 - 12109   2022.9

Fully Chelating N₃O₂-Pentadentate Planar Ligands Designed for the Strongest and Selective Capture of Uranium from Seawater

Takumi Mizumachi, Minami Sato, Masashi Kaneko, Tomoyuki Takeyama, Satoru Tsushima, Koichiro Takao

Inorganic Chemistry   61 ( 16 )   6175 - 6181   2022.4

Synthesis and characterization of a uranyl(<scp>vi</scp>) complex with 2,6-pyridine-bis(methylaminophenolato) and its ligand-centred aerobic oxidation mechanism to a diimino derivative

Tomoyuki Takeyama, Satoshi Iwatsuki, Satoru Tsushima, Koichiro Takao

Dalton Transactions   51 ( 17 )   6576 - 6586   2022.4

Design and demonstration of absorption/luminescence-compatible spectroelectrochemical cell with optically transparent thin-layer electrode

Koichiro Takao, Taro Tsubomura

Journal of Electroanalytical Chemistry   911   116217 - 116217   2022.4

Hydrophobic core formation and secondary structure elements in uranyl(<scp>vi</scp>)-binding peptides

Satoru Tsushima, Koichiro Takao

Physical Chemistry Chemical Physics   24 ( 7 )   4455 - 4461   2022.1

Effects of coordinating heteroatoms on molecular structure, thermodynamic stability and redox behavior of uranyl(vi) complexes with pentadentate Schiff-base ligands

Tomoyuki Takeyama, Koichiro Takao

RSC Advances   2022

Fluorite-like Hydrolyzed Hexanuclear Coordination Clusters of Zr(IV) and Hf(IV) with syn-syn Bridging N,N,N-Trimethylglycine in Soft Crystal Structures Exhibiting Cold-Crystallization

Moe Matsuoka, Satoru Tsushima, Koichiro Takao

Inorganica Chimica Acta   528   120622 - 120622   2021.9

Complexation–Distribution Separated Solvent Extraction Process Designed for Rapid and Efficient Recovery of Inert Platinum Group Metals

Zhiwei Zheng, Tsuyoshi Arai, Koichiro Takao

ACS Omega   6 ( 33 )   21809 - 21818   2021.8

Thermal-assisted back-extraction of inert platinum group metals from [Hbet][Tf2N] ionic liquid phase to oxalic acid aqueous solution

Soma Kono, Tsuyoshi Arai, Koichiro Takao

Journal of Nuclear Science and Technology   58 ( 8 )   941 - 946   2021.8

Effects of Substituents on the Molecular Structure and Redox Behavior of Uranyl(V/VI) Complexes with N3O2-Donating Schiff Base Ligands

Tomoyuki Takeyama, Satoru Tsushima, Koichiro Takao

Inorganic Chemistry   60 ( 15 )   11435 - 11449   2021.8

Electrochemical Studies of Uranium (IV) in an Ionic Liquid–DMF Mixture to Build a Redox Flow Battery Using Uranium as an Electrode Active Material

Kazuki Ouchi, Atsushi Komatsu, Koichiro Takao, Yoshihiro Kitatsuji, Masayuki Watanabe

Chemistry Letters   50 ( 6 )   1169 - 1172   2021.6

Structural Chemistry and Stimuli-Responsive Phase Transition of N,N′-Dialkylimidazolium Nonafluorobutanesulfonate Ionic Liquids

Tomoyuki Takeyama, Yuuki Inoue, Kenji Chayama, Satoshi Iwatsuki, Koichiro Takao

Crystal Growth & Design   21 ( 1 )   617 - 624   2021.1

Facile and Selective Palladium Recovery from Acid Leachate of Nuclear Waste Glass with Hydrazine Reduction Assisted by Coexisting Chalcogens Reviewed

Koichiro Takao

Chemistry Letters   2020.9

Coordination Chemistry of Actinide Nitrates with Cyclic Amide Derivatives for the Development of the Nuclear Fuel Materials Selective Precipitation (NUMAP) Reprocessing Method Reviewed

Koichiro Takao

European Journal of Inorganic Chemistry   2020.8

Molecular Design of Double-Headed 2-Pyrrolidone Derivatives for Separation/Co-precipitation of UO22+ from/with Tetravalent Actinides towards Nuclear Fuel Recycling Reviewed

Koichiro Takao

Chemistry Letters   49 ( 10 )   1201 - 1205   2020.7

Essential Role of Heterocyclic Structure of N-Alkylated 2-Pyrrolidone Derivatives for Recycling Uranium from Spent Nuclear Fuels Reviewed

Koichiro Takao

Bulletin of the Chemical Society of Japan   93 ( 7 )   846 - 853   2020.4

GLOBAL2019国際会議の概要報告

飯塚 政利, 高橋 優也, 佐々木 祐二, 中瀬 正彦, 村上 毅, 太田 宏一, 高木 直行, 鷹尾 康一朗, 塚原 剛彦

日本原子力学会誌ATOMOΣ   62 ( 6 )   339 - 342   2020

Development of acid leaching method to retrieve high-level wastes from nuclear waste glass

Koichiro Takao, Takahiro Mori, Mayuu Kubo, Yasuhisa Ikeda

GLOBAL 2019 - International Nuclear Fuel Cycle Conference and TOP FUEL 2019 - Light Water Reactor Fuel Performance Conference   582 - 585   2020

Rapid and efficient extraction of inert platinum group metals from HNO3(aq) at elevated temperature

Zhiwei Zheng, Tsuyoshi Arai, Koichiro Takao

GLOBAL 2019 - International Nuclear Fuel Cycle Conference and TOP FUEL 2019 - Light Water Reactor Fuel Performance Conference   999 - 1001   2020

Direct and Selective Electrodeposition of Palladium from Betainium Bis(trifluoromethanesulfonyl)imide Ionic Liquid Phase after Solvent Extraction together with Other Platinum Group Metals

Soma KONO, Koichiro TAKAO, Tsuyoshi ARAI

Transactions of the Atomic Energy Society of Japan   19 ( 2 )   76 - 84   2020

Crystallization of colourless hexanitratoneptunate(iv) with anhydrous H+ countercations trapped in a hydrogen bonded polymer with diamide linkers Reviewed

Koichiro Takao

RSC Advances   10 ( 10 )   6082 - 6087   2020

Crystallization of Anhydrous Proton from Acidic Aqueous Solution with Diamide Building Block Reviewed

Koichiro Takao

Crystal Growth & Design   19 ( 11 )   6048 - 6052   2019.11

Kinetic and Thermodynamic Requirements To Extend Solvent Compatibility in Thermal-Assisted Extraction of Inert Platinum Group Metals Reviewed

Koichiro Takao

ACS Sustainable Chemistry & Engineering   7 ( 11 )   9750 - 9753   2019.6

Photocatalytic Oxygenation of Cyclohexene Initiated by Excitation of [UO2(OPCyPh2)4]2+ under Visible Light Reviewed

Koichiro Takao

ACS Omega   2019.4

Crystal Structure of Regularly Th -Symmetric [U(NO3 )6 ]2− Salts with Hydrogen Bond Polymers of Diamide Building Blocks Reviewed International journal

Koichiro Takao

Angewandte Chemie International Edition   58 ( 1 )   240 - 243   2019.1

Wet chemical processing for nuclear waste glass to retrieve radionuclides Reviewed International journal

Koichiro Takao

Journal of Hazardous Materials   362   368 - 374   2019.1

Basic Study on Solvent Extraction Characteristics of [Hbet][Tf₂N] for Advanced Removing Process of Mo(VI) and Zr(IV) from High Level Liquid Waste Reviewed

Koichiro Takao

2018.5

The oxidation of borohydrides by photoexcited [UO<inf>2</inf>(CO<inf>3</inf>)<inf>3</inf>]^4- Reviewed

Takao, K., Tsushima, S.

Dalton Transactions   47 ( 15 )   5149 - 5152   2018

Significant Acceleration of PGMs Extraction with UCST-Type Thermomorphic Ionic Liquid at Elevated Temperature Reviewed

Kono, S., Kazama, H., Mori, T., Arai, T., Takao, K.

ACS Sustainable Chemistry and Engineering   6 ( 2 )   1555 - 1559   2018

Investigation of C-14 in the CRUD collected on the coolant filter for safety disposal of radioactive waste containing C-14 (II)-Chemical alteration of ion exchange resin under simulated condition in primary coolant of PWR Reviewed

Kotaro Nakata, Michihiko Hironaga, Daisuke Minato, Kenichiro Kino, Akira Sakashita, Koichiro Takao, Tetsuro Sakakihara

MRS Advances   3 ( 19 )   1039 - 1050   2018

Controlling the lability of uranyl(vi) through intramolecular π–π stacking Reviewed

Koichiro Takao

Dalton Transactions   2018

Exploring the catalytic activity of Lewis-acidic uranyl complexes in the nucleophilic acyl substitution of acid anhydrides Reviewed

Takao, K., Akashi, S.

RSC Advances   7 ( 20 )   12201 - 12207   2017

An aqueous electrolyte of the widest potential window and its superior capability for capacitors Reviewed

Tomiyasu, H., Shikata, H., Takao, K., Asanuma, N., Taruta, S., Park, Y.-Y.

Scientific Reports   7   2017

Molecular and Crystal Structures of Uranyl Nitrate Coordination Polymers with Double-Headed 2-Pyrrolidone Derivatives Reviewed

Kazama, H., Tsushima, S., Ikeda, Y., Takao, K.

Inorganic Chemistry   56 ( 21 )   13530 - 13534   2017

Investigation into Coordination States of Diglycolamide and Dioxaoctanediamide Complexes with Lanthanide Elements Using Spectroscopic Methods Reviewed

Murakami, S., Matsumiya, M., Sasaki, Y., Suzuki, S., Hisamatsu, S., Takao, K.

Solvent Extraction and Ion Exchange   35 ( 4 )   233 - 250   2017

New concept for molecular design of N-substituted 2-pyrrolidone derivatives towards advanced reprocessing method for spent ThO2 fuels Reviewed

Koichiro Takao, Yasuhisa Ikeda, Hiroyuki Kazama

Energy Procedia   131   157 - 162   2017

Microwave-Assisted Solvent Extraction of Inert Platinum Group Metals from HNO<inf>3</inf>(aq) to Betainium-Based Thermomorphic Ionic Liquid Reviewed

Ikeda, S., Mori, T., Ikeda, Y., Takao, K.

ACS Sustainable Chemistry and Engineering   4 ( 5 )   2459 - 2463   2016

Extraction behaVIor of u(VI) using novel betainium-type ionic liquids: More hydrophobic cations enhance extractability, selectiVIty, and recyclability Reviewed

Mori, T., Ikeda, Y., Takao, K.

Bulletin of the Chemical Society of Japan   89 ( 11 )   1354 - 1360   2016

Emission properties and Cu(i)-Cu(i) interaction in 2-coordinate dicopper(i)-bis(N-heterocyclic)carbene complexes Reviewed

Nishikawa, M., Sano, T., Washimi, M., Takao, K., Tsubomura, T.

Dalton Transactions   45 ( 30 )   12127 - 12136   2016

Syntheses and physical properties of novel betainium-type ionic liquids derived from amino acids Reviewed

Mori, T., Takao, K., Ikeda, Y.

Chemistry Letters   45 ( 2 )   164 - 166   2016

Homogeneous liquid-liquid extraction of U(VI) from HNO<inf>3</inf> aqueous solution to betainium bis(trifluoromethylsulfonyl)imide ionic liquid and recovery of extracted U(VI) Reviewed

Mori, T., Takao, K., Sasaki, K., Suzuki, T., Arai, T., Ikeda, Y.

Separation and Purification Technology   155   133 - 138   2016

Liquid-Liquid Extraction of Uranyl Species Using Ionic Liquid, Betainium Bis(trifluoromethylsulfonyl)imide

SASAKI Kotoe, SUZUKI Tomoya, MORI Takahiro, ARAI Tsuyoshi, TAKAO Koichiro, IKEDA Yasuhisa

Bull Res Lab Nucl React   38   17 - 18   2015.1

Precise determination of precipitation yield of uranyl nitrate with N -alkylated 2-pyrrolidone derivatives Reviewed

Takao, K., Kawata, Y., Nogami, M., Harada, M., Morita, Y., Nishimura, K., Ikeda, Y.

Journal of Nuclear Science and Technology   52 ( 2 )   294 - 298   2015

Highly emissive copper(i) complexes bearing diimine and bis(diphenylphosphinomethyl)-2,2-dimethyl-1,3-dioxolane Reviewed

Nishikawa, M., Sawamura, S., Haraguchi, A., Morikubo, J., Takao, K., Tsubomura, T.

Dalton Transactions   44 ( 1 )   411 - 418   2015

Outer-sphere extraction of uranyl(VI) from HNO3 (aq) to 1-Butyl-3-methylimidazolium nonafluorobutanesulfonate ionic liquid: Towards decontamination of uranium wastes Reviewed

Takao, K., Arakawa, K., Mori, T., Harada, M., Ikeda, Y.

Bulletin of the Chemical Society of Japan   88 ( 12 )   1746 - 1751   2015

Correlation between intermolecular hydrogen bonds and melting points of uranyl nitrate complexes with cyclic urea derivatives Reviewed

Suzuki, T., Takao, K., Kawasaki, T., Harada, M., Nogami, M., Ikeda, Y.

Polyhedron   96   102 - 106   2015

Selective liquid-liquid extraction of uranyl species using task-specific ionic liquid, betainium bis(trifluoromethylsulfonyl)imide Reviewed

Sasaki, K., Suzuki, T., Mori, T., Arai, T., Takao, K., Ikeda, Y.

Chemistry Letters   43 ( 6 )   775 - 777   2014

Studies on Metal Complexes as Active Materials in Redox-flow Battery Using Ionic Liquids as Electrolyte: Electrochemical Properties of [Fe(L)<inf>x</inf>][Tf<inf>2</inf>N]<inf>2</inf>(L: Multidentate Ligands, x = 2 or 3) in 1-Butyl-3-methylimidazolium Bis(Trifluoromethylsulfonyl)Imide, [BMI][Tf<inf>2</inf>N] Reviewed

Teramoto, K., Nishide, T., Okumura, S., Takao, K., Ikeda, Y.

Electrochemistry   82 ( 7 )   566 - 572   2014

Uranyl species in 1-ethyl-3-methylimidazolium nitrate ([emi][no3]) solution of [emi]2[uo2(no3)4]: First spectrophotometric evidence for existence of [uo2(no3)4]2 Reviewed

Sasaki, K., Suzuki, T., Arai, T., Takao, K., Suzuki, S., Yaita, T., Ikeda, Y.

Chemistry Letters   43 ( 5 )   670 - 672   2014

Efficient and versatile anion metathesis reaction for ionic liquid preparation by using conjugate acid and ortho ester Reviewed

Takao, K., Takao, S.

Bulletin of the Chemical Society of Japan   87 ( 9 )   974 - 981   2014

Experimental and theoretical approaches to redox innocence of ligands in uranyl complexes: What is formal oxidation state of uranium in reductant of uranyl(VI)? Reviewed

Takao, K., Tsushima, S., Ogura, T., Tsubomura, T., Ikeda, Y.

Inorganic Chemistry   53 ( 11 )   5772 - 5780   2014

A study on selective precipitation of U(VI) by hydrophilic cyclic urea derivatives for development of a reprocessing system based on precipitation method Reviewed

Suzuki, T., Takao, K., Kawasaki, T., Harada, M., Nogami, M., Ikeda, Y.

Journal of Nuclear Science and Technology   51 ( 4 )   514 - 520   2014

Extraction of Pd(ii), Rh(iii) and Ru(iii) from HNO<inf>3</inf>aqueous solution to betainium bis(trifluoromethanesulfonyl)imide ionic liquid Reviewed

Sasaki, K., Takao, K., Suzuki, T., Mori, T., Arai, T., Ikeda, Y.

Dalton Transactions   43 ( 15 )   5648 - 5651   2014

Oxorhenium(V) complexes with 1H-benzimidazole-2-carboxylic acid - Synthesis, structural characterization and catalytic application in epoxidation reactions Reviewed

Machura, B., Wolff, M., Benoist, E., Schachner, J.A., Mösch-Zanetti, N.C., Takao, K., Ikeda, Y.

Polyhedron   69   205 - 218   2014

Electrochemical and Spectroelectrochemical Studies on [UO2Cl4]2- in 1-Ethyl-3-methylimidazolium Based Ionic Liquids

OGURA Toshinari, TAKAO Koichiro, SASAKI Kotoe, ARAI Tsuyoshi, IKEDA Yasuhisa

Bull Res Lab Nucl React   36   34   2013.2

Luminescent palladium(0) complexes bearing N-heterocyclic carbene and phosphine ligands Reviewed

Tsubomura, T., Murota, H., Takao, K.

Inorganic Chemistry Communications   35   110 - 112   2013

Uranyl-halide complexation in N,N-dimethylformamide: Halide coordination trend manifests hardness of [UO&lt;inf&gt;2&lt;/inf&gt;]&lt;sup&gt;2+&lt;/sup&gt; Reviewed

Takao, K., Takao, S., Ikeda, Y., Bernhard, G., Hennig, C.

Dalton Transactions   42 ( 36 )   13101 - 13111   2013

Highly emissive platinum(ii) complexes bearing carbene and cyclometalated ligands Reviewed

Uesugi, H., Tsukuda, T., Takao, K., Tsubomura, T.

Dalton Transactions   42 ( 20 )   7396 - 7403   2013

Identification of hexanuclear Actinide(IV) carboxylates with Thorium, Uranium and Neptunium by EXAFS spectroscopy Reviewed

Christoph Hennig, Shinobu Takao, Koichiro Takao, Stephan Weiss, Werner Kraus, Franziska Emmerling, Michel Meyer, Andreas C. Scheinost

15TH INTERNATIONAL CONFERENCE ON X-RAY ABSORPTION FINE STRUCTURE (XAFS15)   430 ( 1 )   2013

Actinide chemistry in ionic liquids Reviewed

Takao, K., Bell, T.J., Ikeda, Y.

Inorganic Chemistry   52 ( 7 )   3459 - 3472   2013

A study on selective precipitation ability of cyclic urea to U(VI) for developing reprocessing system based on precipitation method Reviewed

Suzuki, T., Kawasaki, T., Takao, K., Harada, M., Nogami, M., Ikeda, Y.

Journal of Nuclear Science and Technology   49 ( 10 )   1010 - 1017   2012

Blue to orange emitters; Palladium(0) monodentate phosphine complexes Reviewed

Ohkubo, T., Takao, K., Tsubomura, T.

Inorganic Chemistry Communications   20   27 - 29   2012

Electrochemical behavior of [UO<inf>2</inf>Cl<inf>4</inf>]^2-in 1-ethyl-3-methylimidazolium based ionic liquids Reviewed

Ogura, T., Sasaki, K., Takao, K., Arai, T., Ikeda, Y.

Science China Chemistry   55 ( 9 )   1699 - 1704   2012

Structure and stability range of a hexanuclear Th(iv)-glycine complex Reviewed

Hennig, C., Takao, S., Takao, K., Weiss, S., Kraus, W., Emmerling, F., Scheinost, A.C.

Dalton Transactions   41 ( 41 )   12818 - 12823   2012

Weakly-basic anion exchange resin scavenges impurities in ionic liquid synthesized from trialkyloxonium salt Reviewed

Takao, K., Tsubomura, T.

Journal of Chemical and Engineering Data   57 ( 9 )   2497 - 2502   2012

Formation of soluble hexanuclear neptunium(IV) nanoclusters in aqueous solution: Growth termination of actinide(IV) hydrous oxides by carboxylates Reviewed

Takao, K., Takao, S., Scheinost, A.C., Bernhard, G., Hennig, C.

Inorganic Chemistry   51 ( 3 )   1336 - 1344   2012

Simplest homoleptic metal-centered tetrahedrons, [M(OH 2) 4] 2+, in 1-ethyl-3-methylimidazolium tetrafluoroborate ionic liquid (M = Co, Ni, Cu) Reviewed

Takao, K., Tone, Y., Hennig, C., Inoue, S., Tsubomura, T.

Inorganic Chemistry   51 ( 8 )   4850 - 4854   2012

Spectroelectrochemical identification of a pentavalent uranyl tetrachloro complex in room-temperature ionic liquid Reviewed

Ogura, T., Takao, K., Sasaki, K., Arai, T., Ikeda, Y.

Inorganic Chemistry   50 ( 21 )   10525 - 10527   2011

Molecular structure and electrochemical behavior of uranyl(VI) complex with pentadentate schiff base Ligand: Prevention of uranyl(V) Cation-Cation interaction by fully chelating equatorial coordination sites Reviewed

Takao, K., Kato, M., Takao, S., Nagasawa, A., Bernhard, G., Hennig, C., Ikeda, Y.

Inorganic Chemistry   49 ( 5 )   2349 - 2359   2010

Molecular and crystal structures of plutonyl(VI) nitrate complexes with N-alkylated 2-pyrrolidone derivatives: Cocrystallization potentiality of U ^VI and Pu^VI Reviewed

Kim, S.-Y., Takao, K., Haga, Y., Yamamoto, E., Kawata, Y., Morita, Y., Nishimura, K., Ikeda, Y.

Crystal Growth and Design   10 ( 5 )   2033 - 2036   2010

?-?²?²-peroxido-bis[nitratodioxido- bis(pyrrolidin-2-one)uranium(VI)] Reviewed

Takao, K., Ikeda, Y.

Acta Crystallographica Section E: Structure Reports Online   66 ( 5 )   M539 - U661   2010

In situ spectroelectrochemical investigation of Pt(II/IV) oxidation in aqueous solution using X-ray absorption spectroscopy Reviewed

Takao, K., Takao, S., Scheinost, A.C., Bernhard, G., Hennig, C.

Inorganica Chimica Acta   363 ( 4 )   802 - 806   2010

Structural and electrochemical studies on uranyl(VI) complex with pentadentate Schiff base ligand: A guide to stable uranyl(V) Reviewed

Takao Koichiro, Kato Masaru, Takao Shinobu, Nagasawa Akira, Scheinost Andreas C, Bernhard Gert, Hennig Christoph, Ikeda Yasuhisa, Rao L, Tobin JG, Shuh D

Actinides 2009   9 ( 1 )   2010

Solubility of uranyl nitrate precipitates with N-alkyl-2-pyrrolidone derivatives (alkyl = n-propyl, n-butyl, iso-butyl, and cyclohexyl) Reviewed

Takao, K., Noda, K., Nogami, M., Sugiyama, Y., Harada, M., Morita, Y., Nishimura, K., Ikeda, Y.

Journal of Nuclear Science and Technology   46 ( 10 )   995 - 999   2009

First hexanuclear UIV and ThIV formate complexes - Structure and stability range in aqueous solution Reviewed

Takao, S., Takao, K., Kraus, W., Emmerling, F., Scheinost, A.C., Bernhard, G., Hennig, C.

European Journal of Inorganic Chemistry   ( 32 )   4771 - 4775   2009

Neptunium carbonato complexes in aqueous solution: An electrochemical, spectroscopic, and quantum chemical study Reviewed

Ikeda-Ohno, A., Tsushima, S., Takao, K., Rossberg, A., Funke, H., Scheinost, A.C., Bernhard, G., Yaita, T., Hennig, C.

Inorganic Chemistry   48 ( 24 )   11779 - 11787   2009

Complex formation and molecular structure of neptunyl(VI) and -(V) acetates Reviewed

Takao, K., Takao, S., Scheinost, A.C., Bernhard, G., Hennig, C.

Inorganic Chemistry   48 ( 18 )   8803 - 8810   2009

Development of advanced reprocessing system based on precipitation method using pyrrolidone derivatives as precipitants - Precipitation behavior of U(VI), Pu(IV), and Pu(VI) by pyrrolidone derivatives with low hydrophobicity - Reviewed

Morita, Y., Takao, K., Kim, S.-Y., Kawata, Y., Harada, M., Nogami, M., Nishimura, K., Ikeda, Y.

Journal of Nuclear Science and Technology   46 ( 12 )   1129 - 1136   2009

Erratum: Comparative study of uranyl(VI) and -(V) carbonato complexes in an aqueous solution (Inorganic Chemistry (2007) 46 (4212) DOI: 10.1021/ic070051y) Reviewed

Ikeda, A., Hennig, C., Tsushima, S., Takao, K., Ikeda, Y., Scheinost, A.C., Bemhard, G.

Inorganic Chemistry   48 ( 13 )   2009

Complex formation of uranyl ion with triphenylphosphine oxide and its ligand exchange reaction in 1-butyl-3-methylimidazolium nonafluorobutanesulfonate ionic liquid Reviewed

Takao, K., Takahashi, T., Ikeda, Y.

Inorganic Chemistry   48 ( 4 )   1744 - 1752   2009

Development of advanced reprocessing system based on precipitation method using pyrrolidone derivatives as precipitants Reviewed

Morita, Y., Takao, K., Kim, S.-Y., Kawata, Y., Harada, M., Nogami, M., Nishimura, K., Ikeda, Y.

Journal of Nuclear Science and Technology   46 ( 12 )   1129 - 1136   2009

Solubility of uranyl nitrate precipitates with n-alkyl-2-pyrrolidone derivatives (alkyl = n-propyl, n-butyl, iso-butyl, and cyclohexyl) Reviewed

Takao, K., Noda, K., Nogami, M., Sugiyama, Y., Harada, M., Morita, Y., Nishimura, K., Ikeda, Y.

Journal of Nuclear Science and Technology   46 ( 10 )   995 - 999   2009

Structures of homoleptic eight- and nine-coordinate uranium(IV) perchlorate complexes with sulfoxide molecules as ligands Reviewed

Koshino, N., Kachi, Y., Varga, T.R., Benyei, A.C., Shiro, M., Takao, K., Ikeda, Y.

Inorganica Chimica Acta   362 ( 10 )   3433 - 3439   2009

X-ray absorption fine structures of uranyl(V) complexes in a nonaqueous solution Reviewed

Takao, K., Tsushima, S., Takao, S., Scheinost, A.C., Bernhard, G., Ikeda, Y., Hennig, C.

Inorganic Chemistry   48 ( 20 )   9602 - 9604   2009

Molecular and crystal structures of uranyl nitrate complexes with N-alkylated 2-pyrrolidone derivatives: Design and optimization of promising precipitant for uranyl ion Reviewed

Takao, K., Noda, K., Morita, Y., Nishimura, K., Ikeda, Y.

Crystal Growth and Design   8 ( 7 )   2364 - 2376   2008

Bis(nonafluoro-butane-sulfonato-O)dioxidotris(tetrahydrofuran-O)uranium(VI) Reviewed

Takao, K., Ikeda, Y.

Acta Crystallographica Section E: Structure Reports Online   64 ( 1 )   M168 - U1597   2008

Bis(2-benzoyl-1-phenylethenolato-κ2 O,O′)(ethanol- κO)dioxidouranium(VI) Reviewed

Takao, K., Ikeda, Y.

Acta Crystallographica Section E: Structure Reports Online   64 ( 1 )   M219 - U2113   2008

Di-μ-chlorido-bis[chloridobis(dimethyl sulfoxide)dioxidouranium(VI)] Reviewed

Mizuoka, K., Ikeda, Y.

Acta Crystallographica Section E: Structure Reports Online   64 ( 1 )   M107 - U1053   2008

Alternative route to metal halide free ionic liquids Reviewed

Takao, K., Ikeda, Y.

Chemistry Letters   37 ( 7 )   682 - 683   2008

Structural characterization and reactivity of UO<inf>2</inf>(salophen)L and [UO<inf>2</inf>(salophen)]<inf>2</inf>: Dimerization of UO<inf>2</inf>(salophen) fragments in noncoordinating solvents (salophen = N,N?-disalicylidene-o-phenylenediaminate, L = N,N-dimethylformamide, dimethyl sulfoxide) Reviewed

Takao, K., Ikeda, Y.

Inorganic Chemistry   46 ( 5 )   1550 - 1562   2007

Development of advanced reprocessing system based on use of pyrrolidone derivatives as novel precipitants with high selectivity and control ability (1) - concept of advanced reprocessing system and precipitation behavior of U(VI) Reviewed

Ikeda Y, Takao K, Harada M, Morita Y, Nogami M, Nishimura K

GLOBAL 2007: Advanced Nuclear Fuel Cycles and Systems   1503 - 1507   2007

Comparative study of uranyl(VI) and -(V) carbonato complexes in an aqueous solution Reviewed

Ikeda, A., Hennig, C., Tsushima, S., Takao, K., Ikeda, Y., Scheinost, A.C., Bernhard, G.

Inorganic Chemistry   46 ( 10 )   4212 - 4219   2007

Molecular structure and linkage isomerization of isothiocyanato(3-thiapentane-1,5-dithiolato)oxorhenium(V) complex Reviewed

Chowdhury, S., Koshino, N., Canlier, A., Mizuoka, K., Ikeda, Y.

Inorganica Chimica Acta   359 ( 8 )   2472 - 2478   2006

Electronic spectra of pure uranyl(V) complexes: Characteristic absorption bands due to a U^VO<inf>2</inf>⁺core in visible and near-infrared regions Reviewed

Mizuoka, K., Tsushima, S., Hasegawa, M., Hoshi, T., Ikeda, Y.

Inorganic Chemistry   44 ( 18 )   6211 - 6218   2005

Structural study on uranyl ion in 1-butyl-3-methylimidazolium nonafluorobutanesulfonate ionic liquid Reviewed

Mizuoka, K., Ikeda, Y.

Progress in Nuclear Energy   47 ( 1-4 )   426 - 433   2005

Structural and kinetic studies on uranyl(V) carbonate complex using ¹³C NMR spectroscopy Reviewed

Mizuoka, K., Grenthe, I., Ikeda, Y.

Inorganic Chemistry   44 ( 13 )   4472 - 4474   2005

Structural changes of uranyl moiety with reduction from U(VI) to U(V) Reviewed

Mizuoka, K., Ikeda, Y.

Radiochimica Acta   92 ( 9-11 )   631 - 635   2004

IR spectroelectrochemical study on U^VO<inf>2</inf>⁺ complex: First evidence for weakening of U=O bond strength in uranyl moiety with reduction from U(VI) to U(V) Reviewed

Mizuoka, K., Ikeda, Y.

Inorganic Chemistry   42 ( 11 )   3396 - 3398   2003

Electrochemical and spectroelectrochemical studies on UO<inf>2</inf>(saloph)L (saloph = N,N?-disalicylidene-o-phenylenediaminate, L = dimethyl sulfoxide or N,N-dimethylformamide) Reviewed

Mizuoka, K., Kim, S.-Y., Hasegawa, M., Hoshi, T., Uchiyama, G., Iked, Y.

Inorganic Chemistry   42 ( 4 )   1031 - 1038   2003

Electrochemical Studies on [U(dmso)<inf>9</inf>]⁴⁺and [UO<inf>2</inf>(dmso)<inf>5</inf>]²⁺(dmso = dimethyl sulfoxide) Complexes in DMSO Reviewed

Kim, S.-Y., Mizuoka, K., Mizuguchi, K., Yamamura, T., Shiokawa, Y., Tomiyasu, H., Ikeda, Y.

Journal of Nuclear Science and Technology   39   441 - 444   2002

UCST型相転移反応を伴う[Hbet][Tf₂N]の塩酸水溶液中におけるPd(II),Rh(III),Ru(III)の抽出挙動

成田友也, 城間梓, 新井剛, 鷹尾康一朗

資源・素材(Web)   2019   2019

TPEN-[C_nmim][Tf₂N]を用いた塩酸水溶液からの貴金属元素の抽出挙動

城間梓, 杉崎祐真, 新井剛, 鷹尾康一朗, ZHENG Zhiwei

資源・素材(Web)   2018   2018

熱応答性イオン液体-硝酸水溶液2相系における白金族,Mo,Zrの抽出挙動に対する温度効果

河野壮馬, 風間裕行, 鷹尾康一朗, 新井剛

日本原子力学会秋の大会予稿集(CD-ROM)   2017   2017

Comparative Study of Uranyl(VI) and -(V) Carbonato Complexes (vol 46, pg 4212, 2007)

A. Ikeda, C. Hennig, S. Tsushima, K. Takao, Y. Ikeda, A. C. Scheinost, G. Bernhard

INORGANIC CHEMISTRY   48 ( 13 )   6321 - 6321   2009.7

ガラス固化体からの核種分離方法及び得られた多孔質ガラス固化体

鷹尾 康一朗, 森 貴宏, 池田 泰久, 上原 章寛

イオン性化合物の製造方法

鷹尾 康一朗

イオン性化合物の製造方法

鷹尾 康一朗

イオン性液体合成法及びイオン性液体

水岡 康一朗

BCSJ Selected Paper

2014   Bulletin of Chemical Society of Japan   Efficient and Versatile Anion Metathesis Reaction for Ionic Liquid Preparation by Using Conjugate Acid and Ortho Ester

TAKAO Koichiro

難抽出性白金族活性化による迅速溶媒抽出技術の開発

2017.9 - 2019.2

独立行政法人石油天然ガス・金属鉱物資源機構(JOGMEC)  金属資源の生産技術に関する基礎研究 

鷹尾 康一朗

ガラス固化体湿式処理技術の開発

2017.4 - 2019.3

内閣府  革新的研究開発推進プログラム(ImPACT)「核変換による高レベル放射性廃棄物の大幅な低減・資源化」 

鷹尾 康一朗

ウラン選択性沈殿剤を用いたトリウム燃料簡易再処理技術基盤研究

2015.10 - 2018.3

文科省  英知を結集した原子力科学技術・人材育成推進事業 

鷹尾 康一朗

溶融塩抽出法を利用したガラス固化体溶解技術のフィージビリティー検討(1)

2015.10 - 2017.3

内閣府  革新的研究開発推進プログラム(ImPACT)「核変換による高レベル放射性廃棄物の大幅な低減・資源化」 

鷹尾 康一朗

高レベル放射性廃液からのマイクロ波駆動型白金族元素迅速抽出技術の開発

2015.9 - 2016.9

日揮・実吉奨学会  日揮・実吉奨学会研究助成 

鷹尾 康一朗

Development of Well-Regulated Complexation of Metal Ions beyond Steric Effects -Using Ionic Liquids as Unique Reaction Media-

Grant number：24750074  2012.4 - 2015.3

Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)  Grant-in-Aid for Young Scientists (B)

TAKAO Koichiro

Exploration of Frontier in Redox Chemistry of Transuranium Elements for Strengthening Chemical Foundation of Nuclear Engineering

Grant number：24KK0109  2024.9 - 2029.3

Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Fund for the Promotion of Joint International Research (International Collaborative Research)

Development of PUREX-NUMAP Hybrid Advanced Reprocessing Technology

Grant number：24K21238  2024.6 - 2028.3

Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Research (Pioneering)

Development of Chelating Agents for Targeted Isotope Therapy

Grant number：24K01398  2024.4 - 2028.3

Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

Development of Novel Electrode Reactions of Single Uranium Compolexes with Redox-Active Ligands towards Surplus Energy Storage

Grant number：24K01399  2024.4 - 2028.3

Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

ウランの光化学的反応性を活用した炭酸系簡易再処理技術基盤研究

2022.5 - 2024.3

中部電力 原子力安全技術研究所  中部電力 原子力安全技術研究所 公募研究(一般) 

鷹尾康一朗, 津島悟

Development of Complexation-Distribution Separated Solvent Extraction of Inert Platinum Group Metals Using Water-Soluble Complexant and Phase Transfer Catalyst

2020.8 - 2022.3

JOGMEC 

放射化学

Institution：東京工業大学

有機機器分析

Institution：成蹊大学

無機化学

核燃料サイクル工学

Institution：東京工業大学