%0 Journal Article %1 Yang2009508 %A Yang, Daniel %A Park, Sang-Eun %A Lee, Joong-Kee %A Lee, Sang-Wha %D 2009 %J Journal of Crystal Growth %K aempl %N 3 %P 508 - 511 %R http://dx.doi.org/10.1016/j.jcrysgro.2008.09.058 %T Sonochemical deposition of nanosized Au on titanium oxides with different surface coverage and their photocatalytic activity %U http://www.sciencedirect.com/science/article/pii/S0022024808008671 %V 311 %X Different surface coverage of nanosized Au on the TiO2 matrix was simply fabricated in an ultrasound-driven cell by adjusting the loading volume of gold precursor. Non-annealed Au–TiO2 composites with low surface coverage of nanosized Au exhibited a significantly enhanced photocatalytic activity in comparison to pristine TiO2. However, a further increase of nanosized Au loading consequently led to a decrease of photocatalytic efficiency of Au-deposited TiO2, probably due to the reduction of available surface area for organic pollutant adsorption and light absorption. The X-ray photoelectron spectroscopy (XPS) analysis of Au-deposited TiO2 indicated the coexistence of metallic Auo and non-metallic Au species that might play a role as an electron scavenger. The reduction of photoluminescence (PL) intensity also indicated the efficient separation of electrons and holes even in Au–TiO2 composites without heat treatment.

@article{Yang2009508, abstract = {Different surface coverage of nanosized Au on the TiO2 matrix was simply fabricated in an ultrasound-driven cell by adjusting the loading volume of gold precursor. Non-annealed Au–TiO2 composites with low surface coverage of nanosized Au exhibited a significantly enhanced photocatalytic activity in comparison to pristine TiO2. However, a further increase of nanosized Au loading consequently led to a decrease of photocatalytic efficiency of Au-deposited TiO2, probably due to the reduction of available surface area for organic pollutant adsorption and light absorption. The X-ray photoelectron spectroscopy (XPS) analysis of Au-deposited TiO2 indicated the coexistence of metallic Auo and non-metallic Au species that might play a role as an electron scavenger. The reduction of photoluminescence (PL) intensity also indicated the efficient separation of electrons and holes even in Au–TiO2 composites without heat treatment. }, added-at = {2015-10-08T06:39:26.000+0200}, author = {Yang, Daniel and Park, Sang-Eun and Lee, Joong-Kee and Lee, Sang-Wha}, biburl = {https://www.bibsonomy.org/bibtex/2f965daba35441309d086cdca0493c7a5/l1th1um}, description = {Sonochemical deposition of nanosized Au on titanium oxides with different surface coverage and their photocatalytic activity}, doi = {http://dx.doi.org/10.1016/j.jcrysgro.2008.09.058}, interhash = {1cad4ca3026aab7adb7603a0d2759c2f}, intrahash = {f965daba35441309d086cdca0493c7a5}, issn = {0022-0248}, journal = {Journal of Crystal Growth }, keywords = {aempl}, note = {The Proceedings of the 4th International Asian Conference on Crystal Growth and Crystal Technology }, number = 3, pages = {508 - 511}, timestamp = {2015-10-08T06:39:26.000+0200}, title = {Sonochemical deposition of nanosized Au on titanium oxides with different surface coverage and their photocatalytic activity }, url = {http://www.sciencedirect.com/science/article/pii/S0022024808008671}, volume = 311, year = 2009 }