In situ photoelectrochemical characteristics of the n-CdTe | acetic acid solution interface by FTIR-ATR

Qinbai Fan; Lily M. Ng

doi:10.1016/0022-0728(95)04167-2

In situ photoelectrochemical characteristics of the n-CdTe | acetic acid solution interface by FTIR-ATR

Qinbai Fan
, Lily M. Ng

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

Fourier transform IR attenuated total reflection (FTIR-ATR) spectroscopy has been used to investigate the adsorption of acetic acid on the n-CdTe photoelectrode in aqueous and non-aqueous solutions. Electromodulated spectra associated with different adsorbates are observed. Acetonitrile as a solvent is adsorbed on the CdTe surface. A blue shift of v(C≡N) (2460 cm^{- 1}) is observed. Illumination affects the blue shift of the adsorbed acetonitrile. Current oscillations were observed under illumination in the anodic region of the cyclic voltammogram. Acetic acid, which is a bidentate ligand, is adsorbed on the CdTe surface. It reduces the blue shift caused by acetonitrile. The absorption intensities of the OH bending and CO stretching modes change under illumination. The photo-Kolbe reaction is present. In aqueous solution, the intensity of the CO bending mode increases when the electrode potential becomes more positive. The adsorbent effects and electrochemical Stark effects related to the different adsorption models are discussed.

Original language	English
Pages (from-to)	151-157
Number of pages	7
Journal	Journal of Electroanalytical Chemistry
Volume	398
Issue number	1-2
DOIs	https://doi.org/10.1016/0022-0728(95)04167-2
State	Published - 5 Dec 1995
Externally published	Yes

Keywords

Electroadsorption
Fourier transform IR spectroscopy
Photoelectrochemical systems
n-CdTe | acetic acid

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10.1016/0022-0728(95)04167-2

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@article{24e87df4a75e4f70a3cbb37e9ca8d065,

title = "In situ photoelectrochemical characteristics of the n-CdTe | acetic acid solution interface by FTIR-ATR",

abstract = "Fourier transform IR attenuated total reflection (FTIR-ATR) spectroscopy has been used to investigate the adsorption of acetic acid on the n-CdTe photoelectrode in aqueous and non-aqueous solutions. Electromodulated spectra associated with different adsorbates are observed. Acetonitrile as a solvent is adsorbed on the CdTe surface. A blue shift of v(C≡N) (2460 cm- 1) is observed. Illumination affects the blue shift of the adsorbed acetonitrile. Current oscillations were observed under illumination in the anodic region of the cyclic voltammogram. Acetic acid, which is a bidentate ligand, is adsorbed on the CdTe surface. It reduces the blue shift caused by acetonitrile. The absorption intensities of the OH bending and CO stretching modes change under illumination. The photo-Kolbe reaction is present. In aqueous solution, the intensity of the CO bending mode increases when the electrode potential becomes more positive. The adsorbent effects and electrochemical Stark effects related to the different adsorption models are discussed.",

keywords = "Electroadsorption, Fourier transform IR spectroscopy, Photoelectrochemical systems, n-CdTe | acetic acid",

author = "Qinbai Fan and Ng, \{Lily M.\}",

note = "Funding Information: Financial support from the National Science Foundation (CHE 9308927) is gratefully acknowledged. We also thank Dr. John Masnovi for the loan of the PAR M273 potentio-stat.",

year = "1995",

month = dec,

day = "5",

doi = "10.1016/0022-0728(95)04167-2",

language = "English",

volume = "398",

pages = "151--157",

journal = "Journal of Electroanalytical Chemistry",

issn = "1572-6657",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - In situ photoelectrochemical characteristics of the n-CdTe | acetic acid solution interface by FTIR-ATR

AU - Fan, Qinbai

AU - Ng, Lily M.

N1 - Funding Information: Financial support from the National Science Foundation (CHE 9308927) is gratefully acknowledged. We also thank Dr. John Masnovi for the loan of the PAR M273 potentio-stat.

PY - 1995/12/5

Y1 - 1995/12/5

N2 - Fourier transform IR attenuated total reflection (FTIR-ATR) spectroscopy has been used to investigate the adsorption of acetic acid on the n-CdTe photoelectrode in aqueous and non-aqueous solutions. Electromodulated spectra associated with different adsorbates are observed. Acetonitrile as a solvent is adsorbed on the CdTe surface. A blue shift of v(C≡N) (2460 cm- 1) is observed. Illumination affects the blue shift of the adsorbed acetonitrile. Current oscillations were observed under illumination in the anodic region of the cyclic voltammogram. Acetic acid, which is a bidentate ligand, is adsorbed on the CdTe surface. It reduces the blue shift caused by acetonitrile. The absorption intensities of the OH bending and CO stretching modes change under illumination. The photo-Kolbe reaction is present. In aqueous solution, the intensity of the CO bending mode increases when the electrode potential becomes more positive. The adsorbent effects and electrochemical Stark effects related to the different adsorption models are discussed.

AB - Fourier transform IR attenuated total reflection (FTIR-ATR) spectroscopy has been used to investigate the adsorption of acetic acid on the n-CdTe photoelectrode in aqueous and non-aqueous solutions. Electromodulated spectra associated with different adsorbates are observed. Acetonitrile as a solvent is adsorbed on the CdTe surface. A blue shift of v(C≡N) (2460 cm- 1) is observed. Illumination affects the blue shift of the adsorbed acetonitrile. Current oscillations were observed under illumination in the anodic region of the cyclic voltammogram. Acetic acid, which is a bidentate ligand, is adsorbed on the CdTe surface. It reduces the blue shift caused by acetonitrile. The absorption intensities of the OH bending and CO stretching modes change under illumination. The photo-Kolbe reaction is present. In aqueous solution, the intensity of the CO bending mode increases when the electrode potential becomes more positive. The adsorbent effects and electrochemical Stark effects related to the different adsorption models are discussed.

KW - Electroadsorption

KW - Fourier transform IR spectroscopy

KW - Photoelectrochemical systems

KW - n-CdTe | acetic acid

UR - https://www.scopus.com/pages/publications/0001735417

U2 - 10.1016/0022-0728(95)04167-2

DO - 10.1016/0022-0728(95)04167-2

M3 - Article

AN - SCOPUS:0001735417

SN - 1572-6657

VL - 398

SP - 151

EP - 157

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

IS - 1-2

ER -

In situ photoelectrochemical characteristics of the n-CdTe | acetic acid solution interface by FTIR-ATR

Abstract

Keywords

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