CAJ | 학술논문

以钛酸丁酯和硝酸亚铈为实验原料，采用溶胶-凝胶法制备了Ce掺杂的TiO2纳米粒子，并利用XRD、DRS、TEM、BET等测试技术对样品进行了表征，且以高压汞灯为光源，甲基橙水溶液的脱色为模型反应，考察了Ce掺杂对纳米TiO2光催化活性的影响．结果表明：Ce掺杂能提高纳米TiO2的光催化活性，有效抑制TiO2纳米粒子的生长和在高温下的相变，增大其比表面积，并使TiO2纳米粒子的光谱响应范围拓展到可见光区，当掺杂Ce的物质的量分数为0．5%时，TiOz纳米粒子的光催化活性达到最佳．
이태산정지화초산아시위실험원료，채용용효-응효법제비료Ce참잡적TiO2납미입자，병이용XRD、DRS、TEM、BET등측시기술대양품진행료표정，차이고압홍등위광원，갑기등수용액적탈색위모형반응，고찰료Ce참잡대납미TiO2광최화활성적영향．결과표명：Ce참잡능제고납미TiO2적광최화활성，유효억제TiO2납미입자적생장화재고온하적상변，증대기비표면적，병사TiO2납미입자적광보향응범위탁전도가견광구，당참잡Ce적물질적량분수위0．5%시，TiOz납미입자적광최화활성체도최가．
Ce-doped TiO2 nanoparticles were prepared by sol-gel process using the Ti（OBu）4 and Ce （NO3）3· 6H2 O as the main raw materials, then the prepared samples were characterized by XRD.DRS. TEM and BET techniques, and then the photocatalytic degradation of methyl orange in aqueous solution was chosen as a model reaction to investigate the effect of Ce-doping on photocatalytic activity of nano- TiO2 irradiated by high-pressure mercury lamp. The results show that Ce-doping could improve the photocatalytic activity of nano-TiO2, effectively restrain the growth and phase transformation under high temperature of TiO2 nanoparticles, increase the specific surface area, and extend the spectrum response range of TiO2 nanoparticles to the visible region, and when Ce dopant quantity is 0.5%（in mole）, the photocatalytic activity of TiO2 nanoparticles would reach the best state.