室温下用新型NH_4CO_3沉淀剂制备纳米TiO_2光催化剂

The Preparating of Nanometer TiO_2 Photocatalyst by Precipitation Method Under Temperature Using NH_4CO_3 as a Precipitant

用Ti(SO4 ) 2 为原料 ,NH4 HCO3为沉淀剂 ,室温下制备了活性较高、粒径 9nm的TiO2 催化剂。考察了不同原料浓度、沉淀 pH值、焙烧温度、焙烧时间等制备条件对TiO2

Nanometer TiO 2 was prepared using Ti(SO 4) 2 as a precursor and NH 4HCO 3 as a precipitant by methods of orthogonally designed precipitation at room temperature and its catalytic activities in photocatalytic degradation of sodium dodecyl benzene sulfonate(SDBS) were measured. The effects of the preparation conditions including the concentrations of Ti(SO 4) 2 and NH 4HCO 3, the pH value at the end of precipitation operation, and sintering temperature and time on the catalytic activities and the primitive diameters of these TiO 2 samples were studied. A TiO 2 catalyst with higher activity and 9nm primitive diameter was prepared under optimized conditions.