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Silver/titania nanocomposite-modified photoelectrodes for photoelectrocatalytic methanol oxidation

Silver deposited titania (Ag/TiO2) nanocomposite thin films were fabricated by the simple sonochemical deposition of Ag on preformed aerosol-assisted chemical vapor deposited TiO2 thin films. The photelectrocatalytic performance of a newly fabricated Ag/TiO2-modified photoelectrode was studied for m...

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Main Authors: Lim, Su Pei, Pandikumar, Alagarsamy, Huang, Nay Ming, Lim, Hong Ngee
Format: Article
Language:English
Published: Elsevier 2014
Online Access:http://psasir.upm.edu.my/id/eprint/35375/1/titania%20nanocomposite-modified%20photoelectrodes%20for%20photoelectrocatalytic%20methanol%20oxidation.pdf
http://psasir.upm.edu.my/id/eprint/35375/
http://www.sciencedirect.com/science/article/pii/S0360319914020254
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spelling my.upm.eprints.353752016-03-04T00:30:56Z http://psasir.upm.edu.my/id/eprint/35375/ Silver/titania nanocomposite-modified photoelectrodes for photoelectrocatalytic methanol oxidation Lim, Su Pei Pandikumar, Alagarsamy Huang, Nay Ming Lim, Hong Ngee Silver deposited titania (Ag/TiO2) nanocomposite thin films were fabricated by the simple sonochemical deposition of Ag on preformed aerosol-assisted chemical vapor deposited TiO2 thin films. The photelectrocatalytic performance of a newly fabricated Ag/TiO2-modified photoelectrode was studied for methanol oxidation under simulated solar AM 1.5G irradiation (100 mW/cm2). The Ag/TiO2-modified photoelectrode showed a photocurrent density of 1 mA/cm2, which is four times that of an unmodified TiO2 photoelectrode. The modification of Ag on the TiO2 surface significantly enhanced the photoelectrocatalytic performance by improving the interfacial charge transfer processes, which minimized the charge recombination. Density functional theory (DFT) calculation studies revealed that methanol could be easily adsorbed onto the Ag surfaces of Ag/TiO2 via a partial electron transfer from Ag to methanol. The newly fabricated Ag/TiO2-modified photoelectrode could be a promising candidate for photoelectrochemical applications. Elsevier 2014-09-12 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/35375/1/titania%20nanocomposite-modified%20photoelectrodes%20for%20photoelectrocatalytic%20methanol%20oxidation.pdf Lim, Su Pei and Pandikumar, Alagarsamy and Huang, Nay Ming and Lim, Hong Ngee (2014) Silver/titania nanocomposite-modified photoelectrodes for photoelectrocatalytic methanol oxidation. International Journal of Hydrogen Energy, 39 (27). pp. 14720-14729. ISSN 0360-3199; ESSN: 1879-3487 http://www.sciencedirect.com/science/article/pii/S0360319914020254 10.1016/j.ijhydene.2014.07.066
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Silver deposited titania (Ag/TiO2) nanocomposite thin films were fabricated by the simple sonochemical deposition of Ag on preformed aerosol-assisted chemical vapor deposited TiO2 thin films. The photelectrocatalytic performance of a newly fabricated Ag/TiO2-modified photoelectrode was studied for methanol oxidation under simulated solar AM 1.5G irradiation (100 mW/cm2). The Ag/TiO2-modified photoelectrode showed a photocurrent density of 1 mA/cm2, which is four times that of an unmodified TiO2 photoelectrode. The modification of Ag on the TiO2 surface significantly enhanced the photoelectrocatalytic performance by improving the interfacial charge transfer processes, which minimized the charge recombination. Density functional theory (DFT) calculation studies revealed that methanol could be easily adsorbed onto the Ag surfaces of Ag/TiO2 via a partial electron transfer from Ag to methanol. The newly fabricated Ag/TiO2-modified photoelectrode could be a promising candidate for photoelectrochemical applications.
format Article
author Lim, Su Pei
Pandikumar, Alagarsamy
Huang, Nay Ming
Lim, Hong Ngee
spellingShingle Lim, Su Pei
Pandikumar, Alagarsamy
Huang, Nay Ming
Lim, Hong Ngee
Silver/titania nanocomposite-modified photoelectrodes for photoelectrocatalytic methanol oxidation
author_facet Lim, Su Pei
Pandikumar, Alagarsamy
Huang, Nay Ming
Lim, Hong Ngee
author_sort Lim, Su Pei
title Silver/titania nanocomposite-modified photoelectrodes for photoelectrocatalytic methanol oxidation
title_short Silver/titania nanocomposite-modified photoelectrodes for photoelectrocatalytic methanol oxidation
title_full Silver/titania nanocomposite-modified photoelectrodes for photoelectrocatalytic methanol oxidation
title_fullStr Silver/titania nanocomposite-modified photoelectrodes for photoelectrocatalytic methanol oxidation
title_full_unstemmed Silver/titania nanocomposite-modified photoelectrodes for photoelectrocatalytic methanol oxidation
title_sort silver/titania nanocomposite-modified photoelectrodes for photoelectrocatalytic methanol oxidation
publisher Elsevier
publishDate 2014
url http://psasir.upm.edu.my/id/eprint/35375/1/titania%20nanocomposite-modified%20photoelectrodes%20for%20photoelectrocatalytic%20methanol%20oxidation.pdf
http://psasir.upm.edu.my/id/eprint/35375/
http://www.sciencedirect.com/science/article/pii/S0360319914020254
_version_ 1643831435099897856
score 13.211869

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