화학공학소재연구정보센터
Applied Chemistry, Vol.10, No.2, 457-460, November, 2006
Hydrogen production from methanol/water photodecomposition using the Ag-TiO2
This study examined hydrogen production over Ag-TiO2 photocatalysts containing AgxO, a conducting component. Nanometer particles of 0.1 mol% Ag-TiO2 were produced using the conventional sol-gel method; they were treated at 500 and 800℃ to obtain the anatase and rutile structures, respectively. The Ag2O (200 and 220 plane) peaks at 2θ = 38.04° and 54.4°, respectively, appeared in Ag-Tio2 treated at 800°C. The H2 production from methanol photodecomposition was greater over the rutile structure than over the anatase structure of TiO2. Moreover, the amount of hydrogen was enhanced over Ag-TiO2 compared to pure TiO2; the production reached 17,124 μmole after 24 h over rutile Ag-TiO2. After methano photodecomposition, the amount of Ag component in the Ag-TiO2 photocatalysts increased, while the Ag2O component decreased.