中國有色金屬學(xué)報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 22 No. 4 April 2012 |
porous ZnO microrods loaded with Ag
（School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan 243002, China）
Abstract:Porous silver-modified ZnO microrods photocatalysts were synthesized through direct thermal decomposition of the Ag-doped zinctartrate precursor, which was prepared by homogeneous precipitation method at 80 °C for 2 h. The obtained samples were characterized by XRD, FTIR, TG−DTA and UV-VIS absorption spectroscopy. The photocatalytic activity of the as-prepared porous Ag/ZnO microrods was tested with the photocatalytic degradation of methyl orange. The results indicate that doping Ag greatly improves the photocatalytic efficiency of ZnO and 3% Ag-doped (mole fraction) ZnO porous microrod photocatalyst exhibits the highest photocatalytic decolorization efficiency, leading to as much as 80% reduction of MO concentration in 120 min. Moreover, the 3% Ag-doped porous microrods also possess higher photocatalytic activity under the real sunlight irradiation.
Key words: Ag/ZnO; porous material; photocatalytic performance; decoloration
