Henan;
Key;
Laboratory;
for;
Environmental;
Pollution;
Control,Key;
Laboratory;
of;
Green;
Chemical;
Media;
and;
Reactions;
Ministry;
of;
Education,School;
of;
Chemical;
and;
Environmental;
Sciences,Henan;
Normal;
University,Xinxiang;
453007,China;
TiO2纳米粒子; 光催化活性; 光降解率; 钇掺杂; 甲基橙; 制备; 扫描电子显微镜; 紫外线照射;