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Srinivasan BR, Kundaikar SA, Morajkar SM, Näther C, Bensch W. Synthesis, crystal structure and properties of hepta(ammonium) penta(1H-imidazol-3-ium) paratungstate B tetrahydrate. J COORD CHEM 2021. [DOI: 10.1080/00958972.2021.1965996] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | | | | | - Christian Näther
- Institut für Anorganische Chemie, Christian-Albrechts-Universität Kiel, Kiel, Germany
| | - Wolfgang Bensch
- Institut für Anorganische Chemie, Christian-Albrechts-Universität Kiel, Kiel, Germany
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3
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Abstract
Tafel analysis of electrocatalysts is essential in their characterization. This paper analyzes the application of Tafel-like analysis to the four-electron nonelectrochemical oxidation of water by the stoichiometric homogeneous 1-electron oxidant [Ru(bpy)3]3+ to dioxygen catalyzed by homogeneous catalysts, [Ru4O4(OH)2(H2O)4(γ-SiW10O36)2]10− (Ru4POM) and [Co4(H2O)2(PW9O34)2]10– (Co4POM). These complexes have slow electron exchange rates with electrodes due to the Frumkin effect, which precludes the use of known electrochemical methods to obtain Tafel plots at ionic strengths lower than 0.5 M. The application of an electron transfer catalyst, [Ru(bpy)3]3+/2+, increases the rates between the Ru4POM and electrode, but a traditional Tafel analysis of such a complex system is precluded due to a lack of appropriate theoretical models for 4-electron processes. Here, we develop a theoretical framework and experimental procedures for a Tafel-like analysis of Ru4POM and Co4POM, using a stoichiometric molecular oxidant [Ru(bpy)3]3+. The dependence of turnover frequency (TOF) as a function of electrochemical solution potential created by the [Ru(bpy)3]3+/[Ru(bpy)3]2+ redox couple (an analog of the Tafel plot) was obtained from kinetics data and interpreted based on the suggested reaction mechanism.
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Mukhacheva AA, Komarov VY, Kokovkin VV, Novikov AS, Abramov PA, Sokolov MN. Unusual π–π interactions directed by the [{(C 6H 6)Ru} 2W 8O 30(OH) 2] 6− hybrid anion. CrystEngComm 2021. [DOI: 10.1039/d1ce00319d] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The [{(C6H6)Ru}2W8O30(OH)2]6− hybrid anion as a new type of π–π stacking induced building block and methanol oxidation precatalyst.
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Li J, Triana CA, Wan W, Adiyeri Saseendran DP, Zhao Y, Balaghi SE, Heidari S, Patzke GR. Molecular and heterogeneous water oxidation catalysts: recent progress and joint perspectives. Chem Soc Rev 2021; 50:2444-2485. [DOI: 10.1039/d0cs00978d] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The recent synthetic and mechanistic progress in molecular and heterogeneous water oxidation catalysts highlights the new, overarching strategies for knowledge transfer and unifying design concepts.
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Affiliation(s)
- J. Li
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - C. A. Triana
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - W. Wan
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | | | - Y. Zhao
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - S. E. Balaghi
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - S. Heidari
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
| | - G. R. Patzke
- Department of Chemistry
- University of Zurich
- CH-8057 Zurich
- Switzerland
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6
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Whang DR. Immobilization of molecular catalysts for artificial photosynthesis. NANO CONVERGENCE 2020; 7:37. [PMID: 33252707 PMCID: PMC7704885 DOI: 10.1186/s40580-020-00248-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 11/23/2020] [Indexed: 05/08/2023]
Abstract
Artificial photosynthesis offers a way of producing fuels or high-value chemicals using a limitless energy source of sunlight and abundant resources such as water, CO2, and/or O2. Inspired by the strategies in natural photosynthesis, researchers have developed a number of homogeneous molecular systems for photocatalytic, photoelectrocatalytic, and electrocatalytic artificial photosynthesis. However, their photochemical instability in homogeneous solution are hurdles for scaled application in real life. Immobilization of molecular catalysts in solid supports support provides a fine blueprint to tackle this issue. This review highlights the recent developments in (i) techniques for immobilizing molecular catalysts in solid supports and (ii) catalytic water splitting, CO2 reduction, and O2 reduction with the support-immobilized molecular catalysts. Remaining challenges for molecular catalyst-based devices for artificial photosynthesis are discussed in the end of this review.
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Affiliation(s)
- Dong Ryeol Whang
- Department of Advanced Materials, Hannam University, 34054, Daejeon, Republic of Korea.
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7
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Mukhacheva AA, Shmakova AA, Volchek VV, Romanova TE, Benassi E, Gushchin AL, Yanshole V, Sheven DG, Kompankov NB, Abramov PA, Sokolov MN. Reactions of [Ru(NO)Cl 5] 2- with pseudotrilacunary {XW 9O 33} 9- (X = As III, Sb III) anions. Dalton Trans 2019; 48:15989-15999. [PMID: 31595900 DOI: 10.1039/c9dt03328a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reactions of [Ru(NO)Cl5]2- with pseudotrivacant B-α-[XW9O33]9- (X = AsIII, SbIII) at 160 °C result in the rearrangement of polyoxometalate backbones into {XM18} structures. In the case of arsenic, oxidation of AsIII to AsV takes place with the formation of a mixture of plenary and monosubstituted Dawson [As2W18O62]6- and [As2W17Ru(NO)O61]7- anions, of which the latter was isolated as Me2NH2+ (DMA-1a and DMA-1b) and Bu4N+ (Bu4N-1) salts and fully characterized. Both α1 and α2 isomers of [As2W17Ru(NO)O61]7- were present in the reaction mixture; pure [α2-As2W17Ru(NO)O61]7- was isolated as the Bu4N+ salt. In the case of antimony, [SbW9O33]9- is converted into a mixture of [SbW18O60]9- and [SbW17{Ru(NO)}O59]10-. The formation of trisubstituted [SbW15{Ru(NO)}3O57]12- as a minor byproduct was detected by HPLC-ICP-AES. The monosubstituted [SbW17{Ru(NO)}O59]10- anion was isolated as DMAH+ (DMA-2) and mixed inorganic cation (CsKNa-2) salts and characterized by XRD, HPLC-ICP-AES, EA and TGA techniques. X-ray analysis shows the presence of the {Ru(NO)}-group in the 6-membered ("equatorial") belt of the Sb-free hemisphere. The experimental findings were confirmed and interpreted by means of quantum chemical calculations.
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Affiliation(s)
- Anna A Mukhacheva
- Nikolaev Institute of Inorganic Chemistry, 3 Akad. Lavrentiev Ave, 630090, Novosibirsk, Russia. and Novosibirsk State University, Pirogova str. 2, 630090, Novosibirsk, Russia.
| | - Alexandra A Shmakova
- Nikolaev Institute of Inorganic Chemistry, 3 Akad. Lavrentiev Ave, 630090, Novosibirsk, Russia.
| | - Victoria V Volchek
- Nikolaev Institute of Inorganic Chemistry, 3 Akad. Lavrentiev Ave, 630090, Novosibirsk, Russia.
| | - Tamara E Romanova
- Nikolaev Institute of Inorganic Chemistry, 3 Akad. Lavrentiev Ave, 630090, Novosibirsk, Russia.
| | - Enrico Benassi
- Novosibirsk State University, Pirogova str. 2, 630090, Novosibirsk, Russia. and Lanzhou Institute of Chemical Physics, CAS, 10 Tianshui Middle Rd, Chengguan Qu, Lanzhou Shi, Gansu Sheng 730000, People's Republic of China
| | - Artem L Gushchin
- Nikolaev Institute of Inorganic Chemistry, 3 Akad. Lavrentiev Ave, 630090, Novosibirsk, Russia. and Novosibirsk State University, Pirogova str. 2, 630090, Novosibirsk, Russia.
| | - Vadim Yanshole
- Novosibirsk State University, Pirogova str. 2, 630090, Novosibirsk, Russia. and International Tomography Center, Institutskaya str. 3a, 630090, Novosibirsk, Russia
| | - Dmitri G Sheven
- Nikolaev Institute of Inorganic Chemistry, 3 Akad. Lavrentiev Ave, 630090, Novosibirsk, Russia.
| | - Nikolay B Kompankov
- Nikolaev Institute of Inorganic Chemistry, 3 Akad. Lavrentiev Ave, 630090, Novosibirsk, Russia.
| | - Pavel A Abramov
- Nikolaev Institute of Inorganic Chemistry, 3 Akad. Lavrentiev Ave, 630090, Novosibirsk, Russia. and South Ural State University, Chelyabinsk, 454080, Russia
| | - Maxim N Sokolov
- Nikolaev Institute of Inorganic Chemistry, 3 Akad. Lavrentiev Ave, 630090, Novosibirsk, Russia. and Novosibirsk State University, Pirogova str. 2, 630090, Novosibirsk, Russia.
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8
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Gong L, Yu L, Yu K, Ding Y, Lv J, Wang C, Su Z, Zhou B. Efficient visible light-driven water oxidation catalysts based on B-β-{BiW8O30} and unique 14-nuclear hetero-metal sandwich unit. Chem Commun (Camb) 2018; 54:674-677. [DOI: 10.1039/c7cc06064e] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A 14-nuclear hetero-metal unit was introduced into {BiW8} systems, which exhibits unusual catalytic activity for water oxidation under visible light irradiation.
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Affiliation(s)
- Lige Gong
- Key Laboratory for Photonic and Electronic Bandgap Materials
- Ministry of Education
- Harbin Normal University
- Harbin 150025
- People's Republic of China
| | - Li Yu
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University
- Lanzhou 730000
- People's Republic of China
| | - Kai Yu
- Key Laboratory for Photonic and Electronic Bandgap Materials
- Ministry of Education
- Harbin Normal University
- Harbin 150025
- People's Republic of China
| | - Yong Ding
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University
- Lanzhou 730000
- People's Republic of China
| | - Jinhua Lv
- Key Laboratory for Photonic and Electronic Bandgap Materials
- Ministry of Education
- Harbin Normal University
- Harbin 150025
- People's Republic of China
| | - Chunmei Wang
- Key Laboratory for Photonic and Electronic Bandgap Materials
- Ministry of Education
- Harbin Normal University
- Harbin 150025
- People's Republic of China
| | - Zhanhua Su
- Key Laboratory for Photonic and Electronic Bandgap Materials
- Ministry of Education
- Harbin Normal University
- Harbin 150025
- People's Republic of China
| | - Baibin Zhou
- Key Laboratory for Photonic and Electronic Bandgap Materials
- Ministry of Education
- Harbin Normal University
- Harbin 150025
- People's Republic of China
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