人工晶体学报, 2017, 46(1): 117-123.
稀土Sm掺杂对纳米TiO2结构和可见光催化性能的影响
彭富昌
1,
,
崔晏
2,
,
高洪林
3,
,
柳清菊
4,
1.攀枝花学院材料工程学院,攀枝花,617000;
2.攀枝花学院材料工程学院,攀枝花,617000;
3.云南大学材料科学与工程学院,昆明,650091;
4.云南大学材料科学与工程学院,昆明,650091
采用溶胶-凝胶法制备了纯TiO2和稀土Sm掺杂TiO2纳米粉体( Sm-TiO2),通过XRD、XPS、FT-IR、UV-Vis-DRS、PL和Nano-sizer纳米粒度仪等对样品进行表征,以亚甲基蓝( MB)的光催化降解为探针反应,探讨稀土Sm掺杂对纳米TiO2的结构和可见光催化性能的影响。结果表明,Sm掺入TiO2后在表面存在Sm3+和Sm2+两种价态, Sm掺杂抑制了TiO2从锐钛矿向金红石的相转变,阻碍纳米晶粒生长,增加了纳米粉体表面羟基含量；适量的Sm掺杂能使TiO2吸收光谱的阈值波长红移,有效降低光生e-/h+的复合率,提高TiO2光催化活性。热处理温度500℃时,掺杂1.0wt%Sm的纳米TiO2样品在普通日光灯下对MB在6 h内的光催化降解效率达97%,明显高于同等条件下Degussa公司产品P25的降解率56%。
引用：
彭富昌,
崔晏,
高洪林,
柳清菊
稀土Sm掺杂对纳米TiO2结构和可见光催化性能的影响.
人工晶体学报,
2017, 46(1): 117-123.
doi:
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