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Wang XM, Wu SH, Ren HT, Zhu PY, Wang C, Liu Y, Sun SW, Zhang XC, Lin YY, Meng ZH, Jia SY, Han X. Formation of hydroperoxo (-OOH) species on the surface of self-doped Bi 2.15WO 6: reactivity towards As(iii) oxidation. Phys Chem Chem Phys 2020; 22:12456-12464. [PMID: 32458845 DOI: 10.1039/d0cp00569j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bi2+xWO6 is a cost-effective and environmentally friendly photocatalyst that shows high reactivity in the oxidation of various contaminants under visible light. However, under alkaline conditions, the reactive oxidative species in the Bi2+xWO6 system are still not clear yet. In this study, it is observed that the oxidation rates of As(iii) increase with increasing pH values in the Bi2.15WO6 system. Photoluminescence and the Mott-Schottky analyses confirm that OH- promotes the separation and transfer of photogenerated electron-hole pairs over Bi2.15WO6, thus facilitating the oxidation of As(iii). Electron spin resonance spectra analysis and quenching experiments rule out contributions of •OH, O2˙-, 1O2 and superoxo species to As(iii) oxidation and indicate that surface -OOH and/or H2O2 are indeed the predominant species under alkaline conditions. The improved production of H2O2 by H-donors such as glucose and phenol, as well as the UV-vis diffuse reflectance and Raman analyses, further confirms the formation of surface -OOH on Bi2.15WO6 under alkaline conditions. In the dark, the significant higher oxidation rate of As(iii) by H2O2-Bi2.15WO6 than that by H2O2 alone reveals that surface -OOH, instead of H2O2, plays an important role in As(iii) oxidation. This study enriches our understanding of the diversity of reactive oxygen species (ROS) in the Bi2.15WO6 system and gives new insight into the mechanism involved in the oxidation of As(iii) under alkaline conditions.
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Affiliation(s)
- Xiang-Ming Wang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, P. R. China
| | - Song-Hai Wu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, P. R. China
| | - Hai-Tao Ren
- School of Textile Science and Engineering, Tiangong University, Tianjin, P. R. China.
| | - Peng-Yue Zhu
- School of Environmental Science and Engineering, Tianjin University, Tianjin, P. R. China
| | - Cong Wang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, P. R. China
| | - Yong Liu
- School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, P. R. China
| | - Shi-Wei Sun
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, P. R. China
| | - Xiao-Cong Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, P. R. China
| | - Yi-Ying Lin
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, P. R. China
| | - Zi-He Meng
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, P. R. China
| | - Shao-Yi Jia
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, P. R. China
| | - Xu Han
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, P. R. China and Key Lab of Indoor Air Environment Quality Control, School of Environmental Science and Engineering, Tianjin University, Tianjin, P. R. China.
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Nogueira LS, Neves P, Gomes AC, Valente AA, Pillinger M, Gonçalves IS. Performance of a tetracarbonylmolybdenum(0) pyrazolylpyridine (pre)catalyst in olefin epoxidation and epoxide alcoholysis. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.06.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Synthesis, Characterization and Catalytic Activity of a Tungsten(VI) Amino Triphenolate Complex. Catal Letters 2017. [DOI: 10.1007/s10562-017-2144-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Neves P, Lysenko AB, Gomes AC, Pillinger M, Gonçalves IS, Valente AA. Behavior of Triazolylmolybdenum(VI) Oxide Hybrids as Oxidation Catalysts with Hydrogen Peroxide. Catal Letters 2017. [DOI: 10.1007/s10562-017-1991-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Amarante TR, Neves P, Valente AA, Paz FAA, Pillinger M, Gonçalves IS. Metal oxide-triazole hybrids as heterogeneous or reaction-induced self-separating catalysts. J Catal 2016. [DOI: 10.1016/j.jcat.2016.06.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Lysenko AB, Senchyk GA, Domasevitch KV, Hauser J, Fuhrmann D, Kobalz M, Krautscheid H, Neves P, Valente AA, Gonçalves IS. Synthesis and Structural Elucidation of Triazolylmolybdenum(VI) Oxide Hybrids and Their Behavior as Oxidation Catalysts. Inorg Chem 2015; 54:8327-38. [DOI: 10.1021/acs.inorgchem.5b01007] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrey B. Lysenko
- Inorganic
Chemistry Department, Taras Shevchenko National University of Kyiv, Volodimirska
Street 64, Kyiv 01033, Ukraine
| | - Ganna A. Senchyk
- Inorganic
Chemistry Department, Taras Shevchenko National University of Kyiv, Volodimirska
Street 64, Kyiv 01033, Ukraine
| | - Konstantin V. Domasevitch
- Inorganic
Chemistry Department, Taras Shevchenko National University of Kyiv, Volodimirska
Street 64, Kyiv 01033, Ukraine
| | - Jürg Hauser
- Departement für Chemie und Biochemie, Universität Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
| | - Daniel Fuhrmann
- Institut für
Anorganische Chemie, Universität Leipzig, Johannisallee
29, D-04103 Leipzig, Germany
| | - Merten Kobalz
- Institut für
Anorganische Chemie, Universität Leipzig, Johannisallee
29, D-04103 Leipzig, Germany
| | - Harald Krautscheid
- Institut für
Anorganische Chemie, Universität Leipzig, Johannisallee
29, D-04103 Leipzig, Germany
| | - Patrícia Neves
- Department of Chemistry, CICECO - Aveiro
Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Anabela A. Valente
- Department of Chemistry, CICECO - Aveiro
Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Isabel S. Gonçalves
- Department of Chemistry, CICECO - Aveiro
Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
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Pyridoxal based ONS and ONO vanadium(V) complexes: Structural analysis and catalytic application in organic solvent free epoxidation. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.03.016] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Pereira A, Martín C, Maya C, Belderrain TR, Pérez PJ. An Effective Dual Copper- and Sulfide-Catalytic System for the Epoxidation of Aldehydes with Phenyldiazomethane. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300606] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Sözen‐Aktaş P, Manoury E, Demirhan F, Poli R. Molybdenum versus Tungsten for the Epoxidation of Cyclooctene Catalyzed by [Cp*
2
M
2
O
5
]. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300260] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Pelin Sözen‐Aktaş
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077 Toulouse Cedex 4, France, Fax: +33‐5‐61553003, http://www.lcc‐toulouse.fr/equipe_g/pages/poli/index.html
- Université de Toulouse, UPS, INPT, 31077 Toulouse Cedex 4, France
- Celal Bayar University, Faculty of Sciences & Liberal Arts, Department of Chemistry, 45030 Muradiye‐Manisa, Turkey
| | - Eric Manoury
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077 Toulouse Cedex 4, France, Fax: +33‐5‐61553003, http://www.lcc‐toulouse.fr/equipe_g/pages/poli/index.html
- Université de Toulouse, UPS, INPT, 31077 Toulouse Cedex 4, France
| | - Funda Demirhan
- Celal Bayar University, Faculty of Sciences & Liberal Arts, Department of Chemistry, 45030 Muradiye‐Manisa, Turkey
| | - Rinaldo Poli
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077 Toulouse Cedex 4, France, Fax: +33‐5‐61553003, http://www.lcc‐toulouse.fr/equipe_g/pages/poli/index.html
- Université de Toulouse, UPS, INPT, 31077 Toulouse Cedex 4, France
- Institut Universitaire de France, 103, bd. Saint‐Michel, 75005 Paris, France
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Sözen-Aktaş P, Del Rosal I, Manoury E, Demirhan F, Lledós A, Poli R. Speciation of [Cp*(2)M(2)O(5)] in polar and donor solvents. Chemistry 2013; 19:3969-85. [PMID: 23400876 DOI: 10.1002/chem.201203075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Indexed: 11/05/2022]
Abstract
The speciation of compounds [Cp*2 M2 O5 ] (M=Mo, W; Cp*=pentamethylcyclopentadienyl) in different protic and aprotic polar solvents (methanol, dimethyl sulfoxide, acetone, acetonitrile), in the presence of variable amounts of water or acid/base, has been investigated by (1) H NMR spectrometry and electrical conductivity. Specific hypotheses suggested by the experimental results have been further probed by DFT calculations. The solvent (S)-assisted ionic dissociation to generate [Cp*MO2 (S)](+) and [Cp*MO3 ](-) takes place extensively for both metals only in water/methanol mixtures. Equilibrium amounts of the neutral hydroxido species [Cp*MO2 (OH)] are generated in the presence of water, with the relative amount increasing in the order MeCN≈acetone<MeOH<DMSO. Addition of a base (Et3 N) converts [Cp*2 M2 O5 ] into [Et3 NH](+) [Cp*MO3 ](-) , for which the presence of a NH⋅⋅⋅OM interaction is revealed by (1) H NMR spectroscopy in comparison with the sodium salts, Na(+) [Cp*MO3 ](-) . These are fully dissociated in DMSO and MeOH, but display a slow equilibrium between free ions and the ion pair in MeCN and acetone. Only one resonance is observed for mixtures of [Cp*MO3 ](-) and [Cp*MO2 (OH)] because of a rapid self-exchange. In the presence of extensive ionic dissociation, only one resonance is observed for mixtures of the cationic [Cp*MO2 (S)](+) product and the residual undissociated [Cp*2 M2 O5 ] because of a rapid associative exchange via the trinuclear [Cp*3 M3 O7 ](+) intermediate. In neat methanol, complex [Cp*2 W2 O5 ] reacts to yield extensive amounts of a new species, formulated as the mononuclear methoxido complex [Cp*WO2 (OMe)] on the basis of the DFT study. An equivalent product is not observed for the Mo system. The addition of increasing amounts of water results in the rapid decrease of this product in favor of [Cp*2 W2 O5 ] and [Cp*WO2 (OH)].
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Affiliation(s)
- Pelin Sözen-Aktaş
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, 31077 Toulouse Cedex 4, France
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