کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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611138 | 880667 | 2009 | 6 صفحه PDF | دانلود رایگان |

A sol–gel hydrothermal method was developed to synthesize peroxo-titania powders and their photooxidation performances were conducted in aqueous methanol solution under visible light irradiation. Three kinds of peroxo-titania were developed using TiO2 and H2O2 containing precursor sol with different dispersion mediums such as NH3 aq NaOH aq, or pure water. Peroxo-titania powder prepared with NH3 aq showed highest photooxidation activity. Moreover, we found unique photofunctional properties: together with formaldehyde production, the photo-excited electron also triggers oxygen evolution, although by TiO2 (Degussa P-25) photocatalysis H2 evolution was observed from the same solution.
Peroxo-titania powder catalyst synthesized in ammoniac solution showed high oxygen evolution under visible light irradiation. We have disclosed dual photofunctional properties: together with formaldehyde production, the photo-excited electron also triggers oxygen evolution.Figure optionsDownload as PowerPoint slide
Journal: Journal of Colloid and Interface Science - Volume 331, Issue 1, 1 March 2009, Pages 132–137