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题名: Study of adsorption behaviors of meso-tetrakis (4-N-Methylpyridyl) porphine p-Toluenesulfonate at indium-tin-oxide electrode/solution interface by in-situ internal reflection spectroscopy and cyclic voltammetry
作者: Qiu, Shujun1, 2;  Sun, Lixian1;  Chu, Hailiang1, 2;  Zou, Yongjin1, 2;  Xu, Fen3;  Matsuda, Naoki4
关键词: Internal reflection spectroscopy ;  Spectroelectrochemistry ;  Cyclic voltammetry ;  Indium-tin-oxide ;  Electrodes ;  TMPyP
刊名: THIN SOLID FILMS
发表日期: 2009-03-02
DOI: 10.1016/j.tsf.2008.11.135
卷: 517, 期:9, 页:2905-2911
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Materials Science, Multidisciplinary ;  Materials Science, Coatings & Films ;  Physics, Applied ;  Physics, Condensed Matter
研究领域[WOS]: Materials Science ;  Physics
英文摘要: In situ electrochemical-absorption spectra of meso-tetrakis (4-N-Methylpyridyl) porphine p-Toluenesulfonate (TMPyP) adsorbed on the surface of an ITO (indium-tin-oxide) electrode was observed by simultaneous measurements using cyclic voltammetry (CV) and internal reflection spectroscopy. The CV experiment was performed using ITO coated on glass as the working electrode, platinum wire as the counter electrode and silver/silver chloride (Ag/AgCl) electrode as the reference electrode. It was found that, in 1 M HCl and pH=2 Britton-Robinson solutions, TMPyP were adsorbed on ITO as P(0)H-4(2+) state and P(0)H-2 state, respectively. Moreover, when the potential was applied on the ITO electrode, the redox reactions of TMPyP in 1 M HCl were also different from those in pH=2 Britton-Robinson solutions. The adsorption rate, desorption rate and equilibrium constants as well as the adsorption free energy of TMPyP were determined by fitting adsorption process between TMPyP and ITO using Langmuirian adsorption model. The effect of pH on the internal reflection spectra was also explored, in which it was shown that the increase of pH lead to the enhancement of the intensity of the internal reflection spectra and the blue shift of the peak position. With the increase of ionic strength of TMPyP solution, the intensity of the internal reflection spectra decreased. (C) 2008 Elsevier B.V. All rights reserved.
关键词[WOS]: OPTICAL WAVE-GUIDE ;  RESONANCE RAMAN-SCATTERING ;  METHYLENE-BLUE ;  ITO ELECTRODE ;  CYTOCHROME-C ;  MULTIPORPHYRIN ARRAYS ;  CATALYTIC-OXIDATION ;  ABSORPTION-SPECTRA ;  SOWG SPECTROSCOPY ;  QUARTZ SURFACE
语种: 英语
WOS记录号: WOS:000264331500015
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141305
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Mat & Thermochem Lab, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
3.Liaoning Normal Univ, Coll Chem & Chem Engn, Dalian 116029, Peoples R China
4.AIST, Onsite Monitoring & Diag Lab, Tosu, Saga 8410052, Japan

Recommended Citation:
Qiu, Shujun,Sun, Lixian,Chu, Hailiang,et al. Study of adsorption behaviors of meso-tetrakis (4-N-Methylpyridyl) porphine p-Toluenesulfonate at indium-tin-oxide electrode/solution interface by in-situ internal reflection spectroscopy and cyclic voltammetry[J]. THIN SOLID FILMS,2009,517(9):2905-2911.
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