DICP OpenIR
An alternative approach to ascertain the rate-determining steps of TiO2 photoelectrocatalytic reaction by electrochemical impedance spectroscopy
Liu, H; Li, XZ; Leng, YJ; Li, WZ
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY B
2003-08-28
DOI10.1021/jp034113r
Volume107Issue:34Pages:8988-8996
Indexed BySCI
SubtypeArticle
Department801
Funding Project801
Contribution Rank3;1
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical
WOS Research AreaChemistry
WOS KeywordINTENSITY-MODULATED PHOTOCURRENT ; PHOTOCATALYTIC DEGRADATION ; FILM ELECTRODES ; SULFOSALICYLIC ACID ; TITANIUM-DIOXIDE ; AQUEOUS-SOLUTION ; ADSORPTION ; PHOTOOXIDATION ; OXIDATION ; KINETICS
AbstractIn an attempt to ascertain the rate-determining steps (RDS) of TiO2 photoelectrocatalytic (PEC) reaction, the PEC oxidation of sulfosalicylic acid (SSA) solution in a TiO2-coated electrode reactor system was monitored by applying the electrochemical impedance spectroscopy (EIS) method. In the meantime, an EIS mathematical model was first established to theoretically simulate the PEC reaction. Based on the EIS model, the theoretical simulation indicates three typical reactions in a PEC oxidation process, which include the charge-transfer-dominated reaction, both the charge-transfer- and adsorption-dominated reaction, and the adsorption-dominated reaction. The experimental results of EIS measurement showed that there was only one arc/semicircle on the EIS plane display when the external bias applied was below 200 mV (vs SCE) in the SSA PEC degradation whereas there were two arcs/semicircles when the externally applied bias exceeded 200 mV (vs SCE). The experimental results have a good agreement with the model simulation. The EIS method in this study provides an easier way to determine the RDS in a PEC oxidation process, which would be helpful to better control the reaction in practice.
Language英语
URL查看原文
WOS IDWOS:000184968000039
Citation statistics
Cited Times:55[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/83009
Collection中国科学院大连化学物理研究所
Affiliation1.Hong Kong Polytech Univ, Dept Civil & Struct Engn, Kowloon, Hong Kong, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
3.Nanyang Technol Univ, Sch Mech & Prod Engn, Singapore 639798, Singapore
Recommended Citation
GB/T 7714
Liu, H,Li, XZ,Leng, YJ,et al. An alternative approach to ascertain the rate-determining steps of TiO2 photoelectrocatalytic reaction by electrochemical impedance spectroscopy[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2003,107(34):8988-8996.
APA Liu, H,Li, XZ,Leng, YJ,&Li, WZ.(2003).An alternative approach to ascertain the rate-determining steps of TiO2 photoelectrocatalytic reaction by electrochemical impedance spectroscopy.JOURNAL OF PHYSICAL CHEMISTRY B,107(34),8988-8996.
MLA Liu, H,et al."An alternative approach to ascertain the rate-determining steps of TiO2 photoelectrocatalytic reaction by electrochemical impedance spectroscopy".JOURNAL OF PHYSICAL CHEMISTRY B 107.34(2003):8988-8996.
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