1
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Qin L, Xin X, Wang R, Lv H, Yang GY. Rational Design of Bromine-Modified Ir(III) Photosensitizer for Photocatalytic Hydrogen Generation. J Catal 2022. [DOI: 10.1016/j.jcat.2022.11.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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2
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Zhang M, Li H, Zhang J, Lv H, Yang GY. Research advances of light-driven hydrogen evolution using polyoxometalate-based catalysts. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63714-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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3
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Bandeira NAG, Liu H, Calhorda MJ. A lacunary tungstomolybdophosphate as an electronic pendulum: The "blue" electron under examination. J Chem Phys 2021; 154:124301. [PMID: 33810680 DOI: 10.1063/5.0039092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The photoreduction of a Keggin type lacunary tungstomolybdophosphate, α-(Bu4N)4[H3PW9Mo2O39], in acetonitrile, led to the formation of a monoreduced lacunary heteropoly anion, or a one electron reduced "heteropoly blue" species, whereby the added "blue" electron was captured by the molybdenum atoms. The magnetic properties and behavior of the "blue" electron were studied by a modified Evans nuclear magnetic resonance method (small downshift of the 31P signal) and variable-temperature electron paramagnetic resonance (g = 1.936 for MoV). The intermolecular exchange of the "blue" electron was limited by a geometrical factor, which requires the contact between Mo caps to exchange it between the heteropoly couple. The intramolecular exchange of the "blue" electron between Mo atoms was rather fast (5.3 × 109 s-1), with a rate of more than six orders of magnitude larger than the intermolecular exchange rate. Density functional theory was used to determine the most prevalent protonation sites in the mixed lacunary isomers with the aim of studying the intramolecular electron transfer pathway in the isolated [H4PW9Mo2O39]4- species. The singly occupied molecular orbital (SOMO) is essentially localized in one of the two nonequivalent molybdenum sites. The kinetics of the intramolecular electron exchange equilibrium MoV + MoVI → MoVI + MoV between the two molybdenum atoms bridged by an oxygen atom was found to be fast in agreement with the experimental result. The transition state is of mixed-valence type, with the SOMO delocalized over the Mo-O-Mo group. Spectroscopic parameters were found to be in fair agreement with experimental results.
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Affiliation(s)
- Nuno A G Bandeira
- BioISI - Biosystems and Integrative Sciences Institute, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Ed. C8, 1749-016 Lisboa, Portugal
| | - Huizhang Liu
- BioISI - Biosystems and Integrative Sciences Institute, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Ed. C8, 1749-016 Lisboa, Portugal
| | - Maria José Calhorda
- BioISI - Biosystems and Integrative Sciences Institute, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Ed. C8, 1749-016 Lisboa, Portugal
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4
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Cui T, Qin L, Fu F, Xin X, Li H, Fang X, Lv H. Pentadecanuclear Fe-Containing Polyoxometalate Catalyst for Visible-Light-Driven Generation of Hydrogen. Inorg Chem 2021; 60:4124-4132. [PMID: 33621075 DOI: 10.1021/acs.inorgchem.1c00267] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The structurally new, carbon-free pentadecanuclear Fe-containing polyoxometalate, Na21[NaFe15(OH)12(PO4)4(A-α-SiW9O34)4]·85H2O (Na21-Fe15P4(SiW9)4), was synthesized using a facile one-pot, solution-based synthetic approach and systematically characterized by various spectroscopic techniques. Single-crystal X-ray diffraction reveals that the title complex is composed of two [Fe4(A-α-SiW9O34)] fragments and two [Fe3.5(A-α-SiW9O34)] fragments stabilized by four PO4 linkers in a tetrameric style with idealized Td point group symmetry. When coupling with (4,4'-ditert-butyl-2,2'-dipyridyl)-bis(coumarin)-iridium(III) hexafluorophosphate ([Ir(coumarin)2(dtbbpy)][PF6]) photosensitizer and triethanolamine (TEOA) sacrificial electron donor, polyoxoanion Fe15P4(SiW9)4 effectively catalyzed hydrogen production with a minimally optimized TON of 986, which represents, to our knowledge, one of the highest values among known Fe-substituted POM-catalyzed hydrogen production systems. Both a mercury-poisoning test and FT-IR characterizations proved the structural stability of Fe15P4(SiW9)4 catalyst under photocatalytic conditions. The photocatalytic mechanism of the present hydrogen-evolving system was investigated by time-solved luminescence and static emission quenching measurements.
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Affiliation(s)
- Tingting Cui
- MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
| | - Lin Qin
- MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
| | - Fangyu Fu
- MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
| | - Xing Xin
- MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
| | - Huijie Li
- MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
| | - Xikui Fang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
| | - Hongjin Lv
- MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
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5
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Radivojevic Jovanovic I, Gallagher CMB, Salcedo R, Lukens WW, Burton‐Pye BP, McGregor D, Francesconi LC. Strategies for the Photoreduction of Tc‐99 Pertechnetate to Low‐Valent Tc by Keggin Polyoxometalates. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000170] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ivana Radivojevic Jovanovic
- Department of Chemistry, of the City University of New York New York City College of Technology 285 Jay Street 11201 Brooklyn NY USA
| | - Colleen M. B. Gallagher
- Hunter College of the City University of New York 695 Park Avenue 10065 New York NY USA
- Ph.D. Program in Chemistry Graduate Center of the City University of New York 10016 New York NY USA
| | - Ramsey Salcedo
- Hunter College of the City University of New York 695 Park Avenue 10065 New York NY USA
- Ph.D. Program in Chemistry Graduate Center of the City University of New York 10016 New York NY USA
- Lehman College of the City University of New York 250 Bedford Park Boulevard West 10468 Bronx NY USA
| | - Wayne W. Lukens
- Chemical Sciences Division The Glenn T. Seaborg Center E.O. Lawrence Berkeley National Laboratory (LBNL) One Cyclotron Road 94720 Berkeley California USA
| | - Benjamin P. Burton‐Pye
- Ph.D. Program in Chemistry Graduate Center of the City University of New York 10016 New York NY USA
- Lehman College of the City University of New York 250 Bedford Park Boulevard West 10468 Bronx NY USA
| | - Donna McGregor
- Ph.D. Program in Chemistry Graduate Center of the City University of New York 10016 New York NY USA
- Lehman College of the City University of New York 250 Bedford Park Boulevard West 10468 Bronx NY USA
| | - Lynn C. Francesconi
- Hunter College of the City University of New York 695 Park Avenue 10065 New York NY USA
- Ph.D. Program in Chemistry Graduate Center of the City University of New York 10016 New York NY USA
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6
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Self-assembly and photocatalytic properties of three nanosized polyoxometalates based on the {SiNb3W9O40} cluster and transition-metal cations. J SOLID STATE CHEM 2019. [DOI: 10.1016/j.jssc.2019.06.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Loading AgCl@Ag on phosphotungstic acid modified macrocyclic coordination compound: Z-scheme photocatalyst for persistent pollutant degradation and hydrogen evolution. J Colloid Interface Sci 2019; 547:50-59. [DOI: 10.1016/j.jcis.2019.03.092] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 03/26/2019] [Accepted: 03/28/2019] [Indexed: 11/20/2022]
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8
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Abstract
Abstract
Recent developments in polyoxometalate photochemistry are discussed with a focus on visible light driven productive chemical reactions. Special attention is given to the fundamental photochemistry of polyoxometalates and the effects on the
resulting photoprocesses.
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9
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Huang P, Wu HY, Huang M, Du M, Qin C, Wang XL, Su ZM. A novel Ta/W mixed-addendum polyoxometalate with photocatalytic properties. Dalton Trans 2018; 46:10177-10180. [PMID: 28678279 DOI: 10.1039/c7dt01890h] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An unprecedented polytantalotungstate (POTT), Cs12.5K4.5H[Ta12Si4W37O158]·25H2O (1), based on the {SiW9Ta3O40}7- cluster was hydrothermally synthesized. A photocatalytic study revealed that 1 exhibits significant photocatalytic water splitting activity.
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Affiliation(s)
- Peng Huang
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Department of Chemistry, School of Chemistry and Chemical Engineering, Jiangsu Normal University, Xuzhou, 221116, PR China.
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10
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Ionophoric Properties of [14]Tetraazaannulene Derivatives and Substituent Effect on the Cation-selectivity. ELECTROANAL 2017. [DOI: 10.1002/elan.201700011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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11
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Lauinger S, Yin Q, Geletii Y, Hill C. Polyoxometalate Multielectron Catalysts in Solar Fuel Production. ADVANCES IN INORGANIC CHEMISTRY 2017. [DOI: 10.1016/bs.adioch.2016.12.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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12
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Panagiotopoulos A, Douvas AM, Argitis P, Coutsolelos AG. Porphyrin-Sensitized Evolution of Hydrogen using Dawson and Keplerate Polyoxometalate Photocatalysts. CHEMSUSCHEM 2016; 9:3213-3219. [PMID: 27775226 DOI: 10.1002/cssc.201600995] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 09/01/2016] [Indexed: 06/06/2023]
Abstract
Hydrogen evolution using photocatalytic systems based on artificial photosynthesis is a major approach toward solar energy conversion and storage. In the polyoxometalate-based photocatalytic systems proposed in the past, middle/near UV light irradiation and noble-metal catalysts were mainly used. Although recently polyoxometalates were sensitized in visible light, photosensitizers or catalysts based on noble metals, and/or poor activity of polyoxometalates were generally obtained. Here we show the highly efficient [turnover number (TON)=215] hydrogen evolution induced by the zinc(II) mesotetrakis(N-methyl-pyridinium-4-yl)porphyrin (ZnTMPyP4+ ) sensitization of a series of polyoxometalate catalysts (two Dawson type, P2 Mo18 O626- and P2 W18 O626- anions, and one Keplerate {Mo132 } cluster) in a visible-light-driven, noble-metal-free, and fully water-soluble system. We attributed the high efficiency for hydrogen evolution to the multi-electron reduction of polyoxometalates and found that: (a) both Dawson polyoxometalates exhibit higher hydrogen evolution efficiency upon ZnTMPyP4+ sensitization in relation to the direct photoreduction of those compounds; (b) the P2 Mo18 O626- anion is more efficient (TON=65 vs. 38, respectively) for hydrogen evolution than the P2 W18 O626- anion; and (c) the high nuclearity Keplerate {Mo132 } cluster exhibits the highest efficiency (TON=215) for hydrogen evolution compared with the polyoxometalates studied.
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Affiliation(s)
- Athanassios Panagiotopoulos
- Laboratory of Bioinorganic Chemistry, Department of Chemistry, University of Crete, Voutes Campus, 70013, Heraklion, Crete, Greece
| | - Antonios M Douvas
- Institute of Nanoscience and Nanotechnology (INN), National Center for Scientific Research (NCSR) "Demokritos", Patr. Gregoriou E' & 27, Neapoleos str., 153 41, Agia Paraskevi, Attica, Greece
| | - Panagiotis Argitis
- Institute of Nanoscience and Nanotechnology (INN), National Center for Scientific Research (NCSR) "Demokritos", Patr. Gregoriou E' & 27, Neapoleos str., 153 41, Agia Paraskevi, Attica, Greece
| | - Athanassios G Coutsolelos
- Laboratory of Bioinorganic Chemistry, Department of Chemistry, University of Crete, Voutes Campus, 70013, Heraklion, Crete, Greece
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13
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Huang P, Qin C, Zhou Y, Hong YM, Wang XL, Su ZM. Self-assembly and photocatalytic H2 evolution activity of two unprecedented polytantalotungstates based on the largest {Ta18} and {Ta18Yb2} clusters. Chem Commun (Camb) 2016; 52:13787-13790. [DOI: 10.1039/c6cc07649a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two unprecedented polytantalotungstates, 1 and 2 based on the largest {Ta18} and {Ta18Yb2} clusters, respectively, were synthesized. 1 and 2 exhibit significant UV photocatalytic water splitting activity.
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Affiliation(s)
- Peng Huang
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Department of Chemistry, School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou
- P. R. China
| | - Chao Qin
- Institute of Functional Material Chemistry
- National & Local United Engineering Lab for Power Battery
- Northeast Normal University
- Changchun
- People's Republic of China
| | - Yu Zhou
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Department of Chemistry, School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou
- P. R. China
| | - Yu-Mei Hong
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Department of Chemistry, School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou
- P. R. China
| | - Xin-Long Wang
- Institute of Functional Material Chemistry
- National & Local United Engineering Lab for Power Battery
- Northeast Normal University
- Changchun
- People's Republic of China
| | - Zhong-Min Su
- Institute of Functional Material Chemistry
- National & Local United Engineering Lab for Power Battery
- Northeast Normal University
- Changchun
- People's Republic of China
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14
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Nie Y, Chen W, Liu Z, Wang E. Synthesis and photocatalytic hydrogen evolution activity of three Keggin-type polyoxometalates with different central atoms. INORG CHEM COMMUN 2015. [DOI: 10.1016/j.inoche.2015.09.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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15
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von Allmen K, Moré R, Müller R, Soriano-López J, Linden A, Patzke GR. Nickel-Containing Keggin-Type Polyoxometalates as Hydrogen Evolution Catalysts: Photochemical Structure-Activity Relationships. Chempluschem 2015; 80:1389-1398. [DOI: 10.1002/cplu.201500074] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 04/21/2015] [Indexed: 11/11/2022]
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16
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Affiliation(s)
- Sa-Sa Wang
- State
Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Guo-Yu Yang
- State
Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
- MOE
Key Laboratory of Cluster Science, School of Chemistry, Beijing Institute of Technology, Beijing 100081, China
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17
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Yan Y, Liu B, Yu C, Zhang X, Hu H, Xue G. Extended architecture formed by linkage of a new type of decamolybdate {Mo10O34} unit and Cu3 cluster. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2014.09.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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18
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Lv H, Guo W, Wu K, Chen Z, Bacsa J, Musaev DG, Geletii YV, Lauinger SM, Lian T, Hill CL. A Noble-Metal-Free, Tetra-nickel Polyoxotungstate Catalyst for Efficient Photocatalytic Hydrogen Evolution. J Am Chem Soc 2014; 136:14015-8. [DOI: 10.1021/ja5084078] [Citation(s) in RCA: 179] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Hongjin Lv
- Department
of Chemistry, ‡X-ray Crystallography Center and §Cherry L. Emerson Center for Scientific
Computation, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Weiwei Guo
- Department
of Chemistry, ‡X-ray Crystallography Center and §Cherry L. Emerson Center for Scientific
Computation, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Kaifeng Wu
- Department
of Chemistry, ‡X-ray Crystallography Center and §Cherry L. Emerson Center for Scientific
Computation, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Zheyuan Chen
- Department
of Chemistry, ‡X-ray Crystallography Center and §Cherry L. Emerson Center for Scientific
Computation, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - John Bacsa
- Department
of Chemistry, ‡X-ray Crystallography Center and §Cherry L. Emerson Center for Scientific
Computation, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Djamaladdin G. Musaev
- Department
of Chemistry, ‡X-ray Crystallography Center and §Cherry L. Emerson Center for Scientific
Computation, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Yurii V. Geletii
- Department
of Chemistry, ‡X-ray Crystallography Center and §Cherry L. Emerson Center for Scientific
Computation, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Sarah M. Lauinger
- Department
of Chemistry, ‡X-ray Crystallography Center and §Cherry L. Emerson Center for Scientific
Computation, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Tianquan Lian
- Department
of Chemistry, ‡X-ray Crystallography Center and §Cherry L. Emerson Center for Scientific
Computation, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Craig L. Hill
- Department
of Chemistry, ‡X-ray Crystallography Center and §Cherry L. Emerson Center for Scientific
Computation, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, United States
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19
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Suzuki K, Tang F, Kikukawa Y, Yamaguchi K, Mizuno N. Hydrogen Evolution Using the Visible-light-induced Metal-to-polyoxometalate Multiple Electron Transfer. CHEM LETT 2014. [DOI: 10.1246/cl.140450] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Kosuke Suzuki
- Department of Applied Chemistry, School of Engineering, The University of Tokyo
| | - Fei Tang
- Department of Applied Chemistry, School of Engineering, The University of Tokyo
| | - Yuji Kikukawa
- Department of Applied Chemistry, School of Engineering, The University of Tokyo
| | - Kazuya Yamaguchi
- Department of Applied Chemistry, School of Engineering, The University of Tokyo
| | - Noritaka Mizuno
- Department of Applied Chemistry, School of Engineering, The University of Tokyo
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20
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Self-assembly and photocatalytic hydrogen evolution of a niobium-containing polyoxometalate. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2014.03.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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21
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Santoni MP, Pal AK, Hanan GS, Tang MC, Furtos A, Hasenknopf B. A light-harvesting polyoxometalate-polypyridine hybrid induces electron transfer as its Re(I) complex. Dalton Trans 2014; 43:6990-3. [PMID: 24699840 DOI: 10.1039/c3dt53612b] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A derivative of the Dawson polyoxometalate [P2V3W15O62](9-) functionalized with one remote bipyridine coordination site (2) has been synthesized and combined with the neutral {Re(CO)3Br} moiety. The new Re(I)-hybrid (3) was characterized by various analytical techniques. Hybrid 3 exhibits several redox processes on a wide range of potentials with reductions centered on V(V), W(VI) and the organic ligand in order of decreasing potential. Both units, the polyoxometalate and the transition metal complex, retain their intrinsic properties in the hybrid 3, which displays photosensitization in the UV region with tailing into high-energy visible region.
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Affiliation(s)
- Marie-Pierre Santoni
- Département de Chimie, Université de Montréal, 2900 Edouard-Montpetit, Montréal, Québec H3T-1J4, Canada.
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22
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Shang X, Liu R, Zhang G, Zhang S, Cao H, Gu Z. Artificial photosynthesis for solar hydrogen generation over transition-metal substituted Keggin-type titanium tungstate. NEW J CHEM 2014. [DOI: 10.1039/c3nj01184d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
POMs (abbreviated as TiW11M (M = Fe, Co, Zn)) show good photocatalytic activities toward H2 evolution.
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Affiliation(s)
- Xinke Shang
- Key Laboratory of Green Process Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing, China
- University of Chinese Academy of Sciences
| | - Rongji Liu
- Key Laboratory of Green Process Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing, China
- University of Chinese Academy of Sciences
| | - Guangjin Zhang
- Key Laboratory of Green Process Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing, China
| | - Suojiang Zhang
- Key Laboratory of Green Process Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing, China
| | - Hongbin Cao
- Key Laboratory of Green Process Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing, China
| | - Zhanjun Gu
- Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety
- Institute of High Energy Physics
- Chinese Academy of Sciences
- Beijing, P. R. China
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23
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Huang P, Qin C, Wang XL, Sun CY, Jiao YQ, Xing Y, Su ZM, Shao KZ. Self-Assembly and Visible-Light Photocatalytic Properties of W/Nb Mixed-Addendum Polyoxometalate and Transition-Metal Cations. Chempluschem 2013; 78:775-779. [DOI: 10.1002/cplu.201300175] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Indexed: 01/08/2023]
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24
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Matt B, Fize J, Moussa J, Amouri H, Pereira A, Artero V, Izzet G, Proust A. Charge Photo-Accumulation and Photocatalytic Hydrogen Evolution Under Visible Light at an Iridium(III)-Photosensitized Polyoxotungstate. ENERGY & ENVIRONMENTAL SCIENCE 2013; 6:1504-1508. [PMID: 24443654 PMCID: PMC3890516 DOI: 10.1039/c3ee40352a] [Citation(s) in RCA: 104] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Steady-state irradiation under visible light of a covalent Ir(III)-photosensitized polyoxotungstate is reported. In the presence of a sacrificial electron donor, the photolysis leads to the very efficient photoreduction of the polyoxometalate. Successive formation of the one-electron and two-electron reduced species, which are unambiguously identified by comparison with spectroelectrochemical measurements, is observed with a significantly faster rate reaction for the formation of the one-electron reduced species. The kinetics of the photoreduction, which are correlated to the reduction potentials of the polyoxometalate (POM), can be finely tuned by the presence of an acid. Indeed light-driven formation of the two-electron reduced POM is considerably facilitated in the presence of acetic acid. The system is also able to perform photocatalytic hydrogen production under visible light without significant loss of performance over more than 1 week of continuous photolysis and displays higher photocatalytic efficiency than the related multi-component system, outlining the decisive effect of the covalent bonding between the POM and the photosensitizer. This functional and modular system constitutes a promising step for the development of charge photoaccumulation devices and subsequent photoelectrocatalysts for artificial photosynthesis.
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Affiliation(s)
- Benjamin Matt
- Institut Parisien de Chimie Moléculaire, UMR CNRS 7201 - UPMC Univ Paris 06, Université Pierre et Marie Curie, 4 place Jussieu, case courier 42, F-75252 Paris Cedex 05, France
| | - Jennifer Fize
- Laboratoire de Chimie et Biologie des Métaux, UMR CNRS 5249 - Université Grenoble 1, CEA DSV/iRTSV, CEA-Grenoble, 17 rue des Martyrs F-38054 Grenoble Cedex 9, France
| | - Jamal Moussa
- Institut Parisien de Chimie Moléculaire, UMR CNRS 7201 - UPMC Univ Paris 06, Université Pierre et Marie Curie, 4 place Jussieu, case courier 42, F-75252 Paris Cedex 05, France
| | - Hani Amouri
- Institut Parisien de Chimie Moléculaire, UMR CNRS 7201 - UPMC Univ Paris 06, Université Pierre et Marie Curie, 4 place Jussieu, case courier 42, F-75252 Paris Cedex 05, France
| | - Alexandre Pereira
- Institut Liten (DTNM/L2CE) - CEA, 17 rue des Martyrs 38054, Grenoble Cedex 9, France
| | - Vincent Artero
- Laboratoire de Chimie et Biologie des Métaux, UMR CNRS 5249 - Université Grenoble 1, CEA DSV/iRTSV, CEA-Grenoble, 17 rue des Martyrs F-38054 Grenoble Cedex 9, France
| | - Guillaume Izzet
- Institut Parisien de Chimie Moléculaire, UMR CNRS 7201 - UPMC Univ Paris 06, Université Pierre et Marie Curie, 4 place Jussieu, case courier 42, F-75252 Paris Cedex 05, France
| | - Anna Proust
- Institut Parisien de Chimie Moléculaire, UMR CNRS 7201 - UPMC Univ Paris 06, Université Pierre et Marie Curie, 4 place Jussieu, case courier 42, F-75252 Paris Cedex 05, France
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Sivakumar R, Thomas J, Yoon M. Polyoxometalate-based molecular/nano composites: Advances in environmental remediation by photocatalysis and biomimetic approaches to solar energy conversion. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2012. [DOI: 10.1016/j.jphotochemrev.2012.08.001] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Li S, Liu S, Liu S, Liu Y, Tang Q, Shi Z, Ouyang S, Ye J. {Ta12}/{Ta16} Cluster-Containing Polytantalotungstates with Remarkable Photocatalytic H2 Evolution Activity. J Am Chem Soc 2012; 134:19716-21. [DOI: 10.1021/ja307484a] [Citation(s) in RCA: 150] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Shujun Li
- Key Laboratory of Polyoxometalate
Science of the Ministry of Education, College of Chemistry, Northeast Normal University, Changchun, Jilin 130024,
China
| | - Shumei Liu
- Key Laboratory of Polyoxometalate
Science of the Ministry of Education, College of Chemistry, Northeast Normal University, Changchun, Jilin 130024,
China
- Department of Materials
Science and Engineering, Jilin University, Changchun 130025, China
| | - Shuxia Liu
- Key Laboratory of Polyoxometalate
Science of the Ministry of Education, College of Chemistry, Northeast Normal University, Changchun, Jilin 130024,
China
| | - Yiwei Liu
- Key Laboratory of Polyoxometalate
Science of the Ministry of Education, College of Chemistry, Northeast Normal University, Changchun, Jilin 130024,
China
| | - Qun Tang
- Key Laboratory of Polyoxometalate
Science of the Ministry of Education, College of Chemistry, Northeast Normal University, Changchun, Jilin 130024,
China
| | - Zhan Shi
- State Key Laboratory of Inorganic
Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012,
China
| | - Shuxin Ouyang
- Photocatalytic Materials Center
(PCMC), National Institute for Materials Science (NIMS) 1-2-1, Sengen, Tsukuba, Ibaraki, 305-0047, Japan
| | - Jinhua Ye
- Photocatalytic Materials Center
(PCMC), National Institute for Materials Science (NIMS) 1-2-1, Sengen, Tsukuba, Ibaraki, 305-0047, Japan
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27
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Huang P, Qin C, Su ZM, Xing Y, Wang XL, Shao KZ, Lan YQ, Wang EB. Self-Assembly and Photocatalytic Properties of Polyoxoniobates: {Nb24O72}, {Nb32O96}, and {K12Nb96O288} Clusters. J Am Chem Soc 2012; 134:14004-10. [DOI: 10.1021/ja303723u] [Citation(s) in RCA: 213] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Peng Huang
- Institute of Functional Materials
Chemistry, Key Laboratory
of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun 130024, People's
Republic of China
| | - Chao Qin
- Institute of Functional Materials
Chemistry, Key Laboratory
of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun 130024, People's
Republic of China
| | - Zhong-Min Su
- Institute of Functional Materials
Chemistry, Key Laboratory
of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun 130024, People's
Republic of China
| | - Yan Xing
- Institute of Functional Materials
Chemistry, Key Laboratory
of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun 130024, People's
Republic of China
| | - Xin-Long Wang
- Institute of Functional Materials
Chemistry, Key Laboratory
of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun 130024, People's
Republic of China
| | - Kui-Zhan Shao
- Institute of Functional Materials
Chemistry, Key Laboratory
of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun 130024, People's
Republic of China
| | - Ya-Qian Lan
- Institute of Functional Materials
Chemistry, Key Laboratory
of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun 130024, People's
Republic of China
| | - En-Bo Wang
- Institute of Functional Materials
Chemistry, Key Laboratory
of Polyoxometalate Science of Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun 130024, People's
Republic of China
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28
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Tucher J, Nye LC, Ivanovic-Burmazovic I, Notarnicola A, Streb C. Chemical and Photochemical Functionality of the First Molecular Bismuth Vanadium Oxide. Chemistry 2012; 18:10949-53. [DOI: 10.1002/chem.201200404] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Revised: 05/10/2012] [Indexed: 11/12/2022]
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29
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Visible-light photocatalytic H2 evolution over a series of transition metal substituted Keggin-structure heteropoly blues. CHINESE SCIENCE BULLETIN 2012. [DOI: 10.1007/s11434-012-5050-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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30
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Streb C. New trends in polyoxometalate photoredox chemistry: From photosensitisation to water oxidation catalysis. Dalton Trans 2012; 41:1651-9. [DOI: 10.1039/c1dt11220a] [Citation(s) in RCA: 214] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Wang ZL, Tan HQ, Chen WL, Li YG, Wang EB. A copper(ii)–ethylenediamine modified polyoxoniobate with photocatalytic H2 evolution activity under visible light irradiation. Dalton Trans 2012; 41:9882-4. [DOI: 10.1039/c2dt30663h] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Fu H, Lu Y, Wang Z, Liang C, Zhang ZM, Wang E. Three hybrid networks based on octamolybdate: Ionothermal synthesis, structure and photocatalytic properties. Dalton Trans 2012; 41:4084-90. [DOI: 10.1039/c2dt11912a] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Burton-Pye BP, Radivojevic I, McGregor D, Mbomekalle IM, Lukens WW, Francesconi LC. Photoreduction of 99Tc Pertechnetate by Nanometer-Sized Metal Oxides: New Strategies for Formation and Sequestration of Low-Valent Technetium. J Am Chem Soc 2011; 133:18802-15. [DOI: 10.1021/ja2060929] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Benjamin P. Burton-Pye
- Department of Chemistry, Hunter College of the City University of New York, 695 Park Avenue, New York, New York 10065, United States
| | - Ivana Radivojevic
- Department of Chemistry, Hunter College of the City University of New York, 695 Park Avenue, New York, New York 10065, United States
| | - Donna McGregor
- Department of Chemistry, Hunter College of the City University of New York, 695 Park Avenue, New York, New York 10065, United States
- Department of Chemistry, Graduate Center of the City University of New York, 365 Fifth Avenue, New York, New York 10016, United States
| | - Israel M. Mbomekalle
- Department of Chemistry, Hunter College of the City University of New York, 695 Park Avenue, New York, New York 10065, United States
| | - Wayne W. Lukens
- Chemical Sciences Division, The Glenn T. Seaborg Center, E.O. Lawrence Berkeley National Laboratory (LBNL), One Cyclotron Road, Berkeley, California 94720, United States
| | - Lynn C. Francesconi
- Department of Chemistry, Hunter College of the City University of New York, 695 Park Avenue, New York, New York 10065, United States
- Department of Chemistry, Graduate Center of the City University of New York, 365 Fifth Avenue, New York, New York 10016, United States
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34
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Reactivity of one-, two-, three- and four-electron reduced forms of α-[P2W18O62]6− generated by controlled potential electrolysis in water. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.02.049] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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35
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Zhang Z, Lin Q, Kurunthu D, Wu T, Zuo F, Zheng ST, Bardeen CJ, Bu X, Feng P. Synthesis and Photocatalytic Properties of a New Heteropolyoxoniobate Compound: K10[Nb2O2(H2O)2][SiNb12O40]·12H2O. J Am Chem Soc 2011; 133:6934-7. [DOI: 10.1021/ja201670x] [Citation(s) in RCA: 156] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zhenyu Zhang
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Qipu Lin
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Dharmalingam Kurunthu
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Tao Wu
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Fan Zuo
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Shou-Tian Zheng
- Department of Chemistry and Biochemistry, California State University, Long Beach, 1250 Bellflower Boulevard, Long Beach, California 90840, United States
| | - Christopher J. Bardeen
- Department of Chemistry, University of California, Riverside, California 92521, United States
| | - Xianhui Bu
- Department of Chemistry and Biochemistry, California State University, Long Beach, 1250 Bellflower Boulevard, Long Beach, California 90840, United States
| | - Pingyun Feng
- Department of Chemistry, University of California, Riverside, California 92521, United States
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36
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Ozawa H, Sakai K. Photo-hydrogen-evolving molecular devices driving visible-light-induced water reduction into molecular hydrogen: structure–activity relationship and reaction mechanism. Chem Commun (Camb) 2011; 47:2227-42. [DOI: 10.1039/c0cc04708b] [Citation(s) in RCA: 214] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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37
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Zhang Z, Lin Q, Zheng ST, Bu X, Feng P. A novel sandwich-type polyoxometalate compound with visible-light photocatalytic H2 evolution activity. Chem Commun (Camb) 2011; 47:3918-20. [DOI: 10.1039/c0cc04697c] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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Jansen R, van Veldhuizen H, Schwegler M, van Bekkum H. Recent (1987-1993) developments in heteropolyacid catalysts in acid catalyzed reactions and oxidation catalysis. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/recl.19941130302] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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39
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Lunk HJ, Schönherr S. Struktur, Eigenschaften und Anwendungen von Heteropolyverbindungen. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/zfch.19870270502] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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40
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Duval S, Floquet S, Simonnet-Jégat C, Marrot J, Biboum RN, Keita B, Nadjo L, Haouas M, Taulelle F, Cadot E. Capture of the [Mo3S4]4+ Cluster within a {Mo18} Macrocycle Yielding a Supramolecular Assembly Stabilized by a Dynamic H-Bond Network. J Am Chem Soc 2010; 132:2069-77. [DOI: 10.1021/ja909762p] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sylvain Duval
- Institute Lavoisier of Versailles, University of Versailles Saint Quentin, 45 avenue des Etats Unis, 78035 Versailles Cedex, France, and Laboratoire de Chimie Physique, UMR 8000, Université de Paris-Sud, 91405 Orsay Cedex, France
| | - Sébastien Floquet
- Institute Lavoisier of Versailles, University of Versailles Saint Quentin, 45 avenue des Etats Unis, 78035 Versailles Cedex, France, and Laboratoire de Chimie Physique, UMR 8000, Université de Paris-Sud, 91405 Orsay Cedex, France
| | - Corine Simonnet-Jégat
- Institute Lavoisier of Versailles, University of Versailles Saint Quentin, 45 avenue des Etats Unis, 78035 Versailles Cedex, France, and Laboratoire de Chimie Physique, UMR 8000, Université de Paris-Sud, 91405 Orsay Cedex, France
| | - Jérôme Marrot
- Institute Lavoisier of Versailles, University of Versailles Saint Quentin, 45 avenue des Etats Unis, 78035 Versailles Cedex, France, and Laboratoire de Chimie Physique, UMR 8000, Université de Paris-Sud, 91405 Orsay Cedex, France
| | - Rosa Ngo Biboum
- Institute Lavoisier of Versailles, University of Versailles Saint Quentin, 45 avenue des Etats Unis, 78035 Versailles Cedex, France, and Laboratoire de Chimie Physique, UMR 8000, Université de Paris-Sud, 91405 Orsay Cedex, France
| | - Bineta Keita
- Institute Lavoisier of Versailles, University of Versailles Saint Quentin, 45 avenue des Etats Unis, 78035 Versailles Cedex, France, and Laboratoire de Chimie Physique, UMR 8000, Université de Paris-Sud, 91405 Orsay Cedex, France
| | - Louis Nadjo
- Institute Lavoisier of Versailles, University of Versailles Saint Quentin, 45 avenue des Etats Unis, 78035 Versailles Cedex, France, and Laboratoire de Chimie Physique, UMR 8000, Université de Paris-Sud, 91405 Orsay Cedex, France
| | - Mohamed Haouas
- Institute Lavoisier of Versailles, University of Versailles Saint Quentin, 45 avenue des Etats Unis, 78035 Versailles Cedex, France, and Laboratoire de Chimie Physique, UMR 8000, Université de Paris-Sud, 91405 Orsay Cedex, France
| | - Francis Taulelle
- Institute Lavoisier of Versailles, University of Versailles Saint Quentin, 45 avenue des Etats Unis, 78035 Versailles Cedex, France, and Laboratoire de Chimie Physique, UMR 8000, Université de Paris-Sud, 91405 Orsay Cedex, France
| | - Emmanuel Cadot
- Institute Lavoisier of Versailles, University of Versailles Saint Quentin, 45 avenue des Etats Unis, 78035 Versailles Cedex, France, and Laboratoire de Chimie Physique, UMR 8000, Université de Paris-Sud, 91405 Orsay Cedex, France
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41
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Fu N, Wu Y, Jin Z, Lu G. Structural-dependent photoactivities of TiO(2) nanoribbon for visible-light-induced H(2) evolution: the roles of nanocavities and alternate structures. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:447-455. [PMID: 19891447 DOI: 10.1021/la902042a] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Bicrystalline dehydrated nanoribbon (DNR) with alternate structure of TiO(2)(B) and anatase has been prepared by a short-time annealing method. It is photoactive for photocatalytic H(2) evolution from water in the visible region sensitized by a novel heteropoly blue sensitizer. The effects of annealing temperature and time on the DNR phase transformation process have been investigated. These results reveal that the nanocavity structure of TiO(2)(B) exhibits a narrow band gap and improves its absorbance coefficient in the visible region. The alternate structures of TiO(2)(B) and anatase improve interfacial electron separation and transfer. Compared with normal phase junction, the smoothing alternate joints in the band structure of DNR-600-30 provide an effective route for the movement of holes and electrons. This unique alternate bicrystalline structure has a significant advantage on its applications in photocatalysis and nanodevices.
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Affiliation(s)
- Ning Fu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, PR China
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42
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Boujtita M, Boixel J, Blart E, Mayer CR, Odobel F. Redox properties of hybrid Dawson type polyoxometalates disubstituted with organo-silyl or organo-phosphoryl moieties. Polyhedron 2008. [DOI: 10.1016/j.poly.2007.10.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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43
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Troupis A, Gkika E, Triantis T, Hiskia A, Papaconstantinou E. Photocatalytic reductive destruction of azo dyes by polyoxometallates: Naphthol blue black. J Photochem Photobiol A Chem 2007. [DOI: 10.1016/j.jphotochem.2006.12.022] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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44
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Majumdar M, Patra SK, Bera JK. Oxidative route to polyoxomolybdates from quadruply bonded [MoIIMoII] precursor: Structural characterization of a tetranuclear cluster [Mo4Cl5O8(pyNP)2] (pyNP=(2-(2-pyridyl)1,8-naphthyridine)). Polyhedron 2007. [DOI: 10.1016/j.poly.2006.11.042] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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45
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Synthesis, characterization and crystal structure of a new β-octamolybdate-supported compound: [Ni(H2O)(2, 2′- bipy)2]2[Mo8O26] ·4H2O·2CH3COOH. INORG CHEM COMMUN 2006. [DOI: 10.1016/j.inoche.2006.03.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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46
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Ryu J, Choi W. Effects of TiO2 surface modifications on photocatalytic oxidation of arsenite: the role of superoxides. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2004; 38:2928-2933. [PMID: 15212269 DOI: 10.1021/es034725p] [Citation(s) in RCA: 77] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Using TiO2 photocatalyst, arsenite [As(III)] can be rapidly oxidized to arsenate [As(V)], which is less toxic and less mobile in the aquatic environment. Superoxides have been recently proposed as a main photocatalytic oxidant of As(III) whereas OH radicals are dominant oxidants in most TiO2 photocatalytic oxidation (PCO) reactions. This study confirms that superoxides are mainly responsible for the As(III) PCO by investigating PCO kinetics in pure and modified TiO2 systems. The rate of As(III) oxidation drastically increased on Pt-TiO2, which could be ascribed to the enhanced superoxide generation through an efficient interfacial electron transfer from the conduction band (CB) to O2. Since the addition of tert-butyl alcohol (OH radical scavenger) had little effect on the PCO rate in both naked and Pt-TiO2 suspensions, OH radicals do not seem to be involved. The addition of polyoxometalates (POMs) as an electron shuttle between TiO2 CB and 02 highly promoted the PCO rate whereas the POM alone was not effective at all in oxidizing As(III). Fluorinated TiO2 that had a markedly reduced adsorptive capacity for As(III) did not show a reduced PCO rate, which indicates that the direct hole transfer path is not important. The arsenite oxidation proceeded under visible light with a similar rate to the case of Pt-TiO2/UV when dye-sensitized Pt-TiO2 was used. Since only superoxides can be generated as a photooxidant in this visible light system, their role as a main oxidant of As(III) is confirmed. In addition, the PCO rate was significantly reduced in the presence of superoxide dismutase.
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Affiliation(s)
- Jungho Ryu
- School of Environmental Science and Engineering, Pohang University of Science and Technology, Pohang, 790-784, Korea
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47
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Rüther T, Hultgren VM, Timko BP, Bond AM, Jackson WR, Wedd AG. Electrochemical investigation of photooxidation processes promoted by sulfo-polyoxometalates: coupling of photochemical and electrochemical processes into an effective catalytic cycle. J Am Chem Soc 2003; 125:10133-43. [PMID: 12914478 DOI: 10.1021/ja029348f] [Citation(s) in RCA: 101] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Oxidative photocurrents measured upon irradiation by a 7-W visible light (wavelength 312-700 nm) demonstrated that the sulfo-polyoxometalate anion clusters [S2W18O62]4- (1a), [S2Mo18O62]4- (1b), and [SMo12O40]2- (2) may be activated photochemically to oxidize the organic substrates benzyl alcohol, ethanol, and (-)-menthol. In the case of catalytic photooxidation of benzyl alcohol to benzaldehyde in the presence of 1a, quantitative electrochemical methods have identified pathways for the oxidation of reduced forms of 1 generated during the catalysis. More generally, the oxidation pathways P(n+2)- + 2H+ <==> Pn- + H2 and 2P(n+2)- + O2 + 4H+ <==> 2Pn- + 2H2O have been evaluated by monitoring acidified acetonitrile solutions of the 2e(-)-reduced clusters by rotating disk electrode voltammetry under anaerobic and aerobic conditions, respectively. Neither of the reduced forms 1b(2e-) nor 2(2e-) reacted under these conditions. In contrast, 1a(2e-) was oxidized via both pathways, consistent with its more negative redox potential, with the rate of oxidation by air-oxygen being significantly faster than that by H+. The present work demonstrated that the crucial step necessary to oxidize reduced catalyst in photocatalytic reactions involving the anions studied may be achieved or accelerated by application of an external potential more positive than the first redox potential of the polyoxometalate anion. Voltammetric analysis revealed that this in situ electrolytic regeneration of the reduced catalyst is an option that leads to a viable photoelectrocatalytic pathway, even when the H+ and O2 pathways are not available.
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Affiliation(s)
- Thomas Rüther
- Centre for Green Chemistry, Monash University, Box 23, Melbourne, Victoria 3800, Australia
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48
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Park H, Choi W. Photoelectrochemical Investigation on Electron Transfer Mediating Behaviors of Polyoxometalate in UV-Illuminated Suspensions of TiO2 and Pt/TiO2. J Phys Chem B 2003. [DOI: 10.1021/jp027732t] [Citation(s) in RCA: 182] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hyunwoong Park
- School of Environmental Science and Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Wonyong Choi
- School of Environmental Science and Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
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49
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Troupis A, Hiskia A, Papaconstantinou E. Photocatalytic reduction and recovery of copper by polyoxometalates. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2002; 36:5355-5362. [PMID: 12521161 DOI: 10.1021/es020933q] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A series of polyoxometalates PW12O40(3-), SiW12O40(4-), and P2Mo18O62(6-) have been used as photocatalysts for recovery of copper and production of fine metal particles. The process involves absorption of light by polyoxometalates, oxidation of an organic substrate, for instance, propan-2-ol as sacrificial reducing reagent, and reoxidation of the reduced polyoxometalates by Cu2+ ions, closing the photocatalytic cycle. Copper(II) ions are reduced to copper(I) and finally to zero-state particles in a 2-electron process, as also suggested by the half-order dependence. Increase of catalyst or propan-2-ol concentration, or both, accelerates the photodeposition of copper until a saturation value is reached. The method is operational at a wide range of copper concentrations varying from 3 to 1300 ppm, leading to very low final concentrations (<0.2 ppm). The presence of dioxygen suppresses the initiation of copper recovery, though the process is equally effective after dioxygen is consumed. The process is independent of pH within the range 0.3-5.0. Addition of ClO4-, NO3-, or CH3COO- has no effect on the removal of copper ions. Chloride ions retard the enhancement of copper precipitation through stabilization of copper(I). This homogeneous, polyoxometalate-based process exhibits some benefits in comparison with the semiconductor-based (heterogeneous) recovery of metals: The final zero-state metal particles are obtained in pure form. No separation from the catalyst is needed, and moreover, the process is catalytic as the photodeposited metal particulates do not hinder the photocatalytic action of polyoxometalate anions.
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Affiliation(s)
- A Troupis
- Institute of Physical Chemistry, NCSR Demokritos, 153 10 Athens, Greece
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50
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