|
6
|
Leng WH, Zhang Z, Zhang JQ, Cao CN. Investigation of the Kinetics of a TiO2 Photoelectrocatalytic Reaction Involving Charge Transfer and Recombination through Surface States by Electrochemical Impedance Spectroscopy. J Phys Chem B 2005; 109:15008-23. [PMID: 16852900 DOI: 10.1021/jp051821z] [Citation(s) in RCA: 378] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this paper, the electrochemical impedance spectroscopy (EIS) mathematical model of TiO2 photoelectrocatalytic (PEC) reactions involving charge transfer and recombination through surface states was developed. The model was used to study the kinetics of photoelectrocatalytic decomposition of salicylic acid. The model simulation results show that the appearance of two distinguishable semicircles in the EIS response depends on the charging of surface state and light intensity. The experimental results demonstrated that similar phenomena to the theoretical simulation results. The model provides a way to obtain the rate constants for the photoelectrochemical reactions of surface states mediating charge transfer and recombination. The applied potential changes not only the recombination rate constant but also the charge-transfer rate constant. Moreover, the experimental EIS results here and those previous published on PEC degradation reactions can be explained by the present model satisfactorily. The relevance of surface states was discussed briefly. The results demonstrated that EIS is a powerful tool for studying the kinetics of PEC decomposition of organic pollutants on TiO2 electrodes.
Collapse
Affiliation(s)
- W H Leng
- Department of Chemistry, Yuquan Campus, Zhejiang University, Hangzhou, 310027, China.
| | | | | | | |
Collapse
|
|
7
|
Jensen H, Fermín DJ, Moser JE, Girault HH. Organization and Reactivity of Nanoparticles at Molecular Interfaces. Part I. Photoelectrochemical Responses Involving TiO2 Nanoparticles Assembled at Polarizable Water|1,2-Dichloroethane Junctions. J Phys Chem B 2002. [DOI: 10.1021/jp0261253] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Henrik Jensen
- Laboratoire d'Electrochimie Physique et Analytique and Laboratoire de Photonique et Interface, Institut de Chimie Moléculaire et Biologique, Ecole Polytechnique Fédérale de Lausanne, Lausanne CH-1015, Switzerland
| | - David J. Fermín
- Laboratoire d'Electrochimie Physique et Analytique and Laboratoire de Photonique et Interface, Institut de Chimie Moléculaire et Biologique, Ecole Polytechnique Fédérale de Lausanne, Lausanne CH-1015, Switzerland
| | - Jacques E. Moser
- Laboratoire d'Electrochimie Physique et Analytique and Laboratoire de Photonique et Interface, Institut de Chimie Moléculaire et Biologique, Ecole Polytechnique Fédérale de Lausanne, Lausanne CH-1015, Switzerland
| | - Hubert H. Girault
- Laboratoire d'Electrochimie Physique et Analytique and Laboratoire de Photonique et Interface, Institut de Chimie Moléculaire et Biologique, Ecole Polytechnique Fédérale de Lausanne, Lausanne CH-1015, Switzerland
| |
Collapse
|
|
8
|
Poznyak SK, Pergushov VI, Kokorin AI, Kulak AI, Schläpfer CW. Structure and Electrochemical Properties of Species Formed as a Result of Cu(II) Ion Adsorption onto TiO2 Nanoparticles. J Phys Chem B 1999. [DOI: 10.1021/jp9840580] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- S. K. Poznyak
- Institute of Physico-Chemical Problems, Belarusian State University, Leningradskaya St. 14, Minsk 220080, Belarus, Department of Chemistry, Moscow State University, Moscow 119899, Russia, Institute of Chemical Physics, Russian Academy of Sciences, Kosygin St. 4, Moscow 117334, Russia, Institute of General and Inorganic Chemistry, Belarusian Academy of Sciences, Surganova St. 9, Minsk 220072, Belarus, and Institute of Inorganic Chemistry, University of Fribourg, Fribourg CH-1700, Switzerland
| | - V. I. Pergushov
- Institute of Physico-Chemical Problems, Belarusian State University, Leningradskaya St. 14, Minsk 220080, Belarus, Department of Chemistry, Moscow State University, Moscow 119899, Russia, Institute of Chemical Physics, Russian Academy of Sciences, Kosygin St. 4, Moscow 117334, Russia, Institute of General and Inorganic Chemistry, Belarusian Academy of Sciences, Surganova St. 9, Minsk 220072, Belarus, and Institute of Inorganic Chemistry, University of Fribourg, Fribourg CH-1700, Switzerland
| | - A. I. Kokorin
- Institute of Physico-Chemical Problems, Belarusian State University, Leningradskaya St. 14, Minsk 220080, Belarus, Department of Chemistry, Moscow State University, Moscow 119899, Russia, Institute of Chemical Physics, Russian Academy of Sciences, Kosygin St. 4, Moscow 117334, Russia, Institute of General and Inorganic Chemistry, Belarusian Academy of Sciences, Surganova St. 9, Minsk 220072, Belarus, and Institute of Inorganic Chemistry, University of Fribourg, Fribourg CH-1700, Switzerland
| | - A. I. Kulak
- Institute of Physico-Chemical Problems, Belarusian State University, Leningradskaya St. 14, Minsk 220080, Belarus, Department of Chemistry, Moscow State University, Moscow 119899, Russia, Institute of Chemical Physics, Russian Academy of Sciences, Kosygin St. 4, Moscow 117334, Russia, Institute of General and Inorganic Chemistry, Belarusian Academy of Sciences, Surganova St. 9, Minsk 220072, Belarus, and Institute of Inorganic Chemistry, University of Fribourg, Fribourg CH-1700, Switzerland
| | - C. W. Schläpfer
- Institute of Physico-Chemical Problems, Belarusian State University, Leningradskaya St. 14, Minsk 220080, Belarus, Department of Chemistry, Moscow State University, Moscow 119899, Russia, Institute of Chemical Physics, Russian Academy of Sciences, Kosygin St. 4, Moscow 117334, Russia, Institute of General and Inorganic Chemistry, Belarusian Academy of Sciences, Surganova St. 9, Minsk 220072, Belarus, and Institute of Inorganic Chemistry, University of Fribourg, Fribourg CH-1700, Switzerland
| |
Collapse
|