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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Elsevier
2014
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| Online Access: | http://psasir.upm.edu.my/id/eprint/35375/ http://psasir.upm.edu.my/id/eprint/35375/1/titania%20nanocomposite-modified%20photoelectrodes%20for%20photoelectrocatalytic%20methanol%20oxidation.pdf |
| _version_ | 1848848037398446080 |
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| author | Lim, Su Pei Pandikumar, Alagarsamy Huang, Nay Ming Lim, Hong Ngee |
| author_facet | Lim, Su Pei Pandikumar, Alagarsamy Huang, Nay Ming Lim, Hong Ngee |
| author_sort | Lim, Su Pei |
| building | UPM Institutional Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-15T09:28:08Z |
| format | Article |
| id | upm-35375 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T09:28:08Z |
| publishDate | 2014 |
| publisher | Elsevier |
| recordtype | eprints |
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| spelling | upm-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 |
| spellingShingle | Lim, Su Pei Pandikumar, Alagarsamy Huang, Nay Ming Lim, Hong Ngee Silver/titania nanocomposite-modified photoelectrodes for photoelectrocatalytic methanol oxidation |
| title | 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_short | Silver/titania nanocomposite-modified photoelectrodes for photoelectrocatalytic methanol oxidation |
| title_sort | silver/titania nanocomposite-modified photoelectrodes for photoelectrocatalytic methanol oxidation |
| url | http://psasir.upm.edu.my/id/eprint/35375/ http://psasir.upm.edu.my/id/eprint/35375/ http://psasir.upm.edu.my/id/eprint/35375/ http://psasir.upm.edu.my/id/eprint/35375/1/titania%20nanocomposite-modified%20photoelectrodes%20for%20photoelectrocatalytic%20methanol%20oxidation.pdf |