CAJ | 학술논문

采用溶胶-凝胶法制备了系列La^3＋掺杂的纳米TiO2，用X射线衍射（XRD）、扫描电镜（SEM）、X-射线能谱仪（EDS）等测试方法对催化剂进行表征，并以甲基橙溶液为降解目标，测定其紫外光光催化活性．结果表明：La^3＋的掺杂能有效抑制TiO2纳米颗粒的增长，提高晶相转变温度；稀土La^3＋的掺杂能有效提高TiO2纳米粉体的光催化活性，最佳初始掺杂物质的量比为0．02％．
채용용효-응효법제비료계렬La^3＋참잡적납미TiO2，용X사선연사（XRD）、소묘전경（SEM）、X-사선능보의（EDS）등측시방법대최화제진행표정，병이갑기등용액위강해목표，측정기자외광광최화활성．결과표명：La^3＋적참잡능유효억제TiO2납미과립적증장，제고정상전변온도；희토La^3＋적참잡능유효제고TiO2납미분체적광최화활성，최가초시참잡물질적량비위0．02％．
A series of La^3＋ doped nano- TiO2 powder were synthesized using sol- gel technology and characterized by X -ray powder diffraction（XRD）, Scanning electron microscope （SEM）, Energy dispersive X- ray spectroscopy （EDS） tech niques. Their photocatalytic activities for degradation of methyl orange under UV - light irradiation were also measured. As has been found that La^3＋ doped were restrained the growing of grain size, improved the phase transition temperature, and improved the photo catalytic activity of nano - TiO2 powder. In addition, the optimal doped molar ratio was 0. 02%.