Zr4+掺杂TiO2光催化剂的制备与表征

以ZrCl4及TiOSO4为前驱物，用尿素热分解共沉淀法制备了Zr4+掺杂TiO2光催化剂Zr/TiO2，并用XRD, TEM, BET, FT-IR等表征了其物相及光催化性能. 结果表明，Zr4+掺杂使TiO2纳米晶粒细化(粒径14~17 nm)，比表面积增大，同时有效抑制了TiO2从锐钛矿到金红石的晶型转变；Zr4+掺杂使TiO2表面的羟基数量增加，改善了对苯酚的吸附性能；Zr4+掺杂提高了TiO2的光催化活性，以4%Zr/TiO2作光催化剂，反应100 min后对苯酚的降解率达100%，TOC去除率超过80%.

Preparation and Characterization of Zr~(4+)-doped TiO_2 Photocatalyst

Zr4+-doped TiO2 photocatalyst was prepared by urea thermal decomposition and homogeneous co-precipitation method using TiOSO4 and ZrCl4 as precursors, the phase and photocatalytic activity of Zr/TiO2 were characterized by XRD, TEM, BET and FT-IR techniques. XRD results indicate that Zr4+-doped TiO2 has small crystal size (14 to 17 nm) and large specific surface area, and phase transformation from anatase to rutile is effectively inhibited. FT-IR results indicate that the presence of Zr4+-dopet in TiO2 accel...