MoO_3的复合改性及光致发光与光催化性质  

MODIFICATION OF MOO_3 AND THEIR PHOTOLUMINESCENCE AND PHOTOCATALYTIC ACTIVITY

作　　者：宋继梅[1] 杜永芳[1] 梅雪峰[1] 孟非凡 张恩贡[1] 刘赛赛[1] 

机构地区：[1]安徽大学化学化工学院功能无机材料化学安徽省重点实验室,安徽合肥230039

出　　处：《中国钼业》2012年第4期27-31,共5页China Molybdenum Industry

基　　金：国家自然科学基金(21171002);安徽省自然科学基金(11040606M55);安徽省教育厅自然科学基金(KJ2010A015)资助;安徽省高等学校"十五"优秀人才建设经费资助

摘　　要：采用室温液相陈化法制备了复合WO3的MoO3粉体,利用XRD、XPS、UV-Vis和PL光谱对合成产物进行了表征,以太阳光为光源对有机染料结晶紫进行了光催化降解研究。UV-Vis漫反射光谱和PL光谱分析结果表明,适量WO3的复合,能够改善MoO3对光的吸收,降低MoO3的PL光谱强度;当WO3复合量为5%时,复合物的PL光谱强度最低,结晶紫溶液的脱色率为89.12%,COD去除率为87.2%。WO3/MoO3 powders were successfully prepared by the chemical ageing method. The products were characterized via X -ray powder diffraction （XRD）, X -ray photoelectron spectroscopy（ XPS）, UV -Vis diffused reflectance spectrum（DRS） and photoluminescence（ PL ） spectrum. The photocatalytic activity of WO3/MoO3 com- posites was evaluated by monitoring the degradation of crystal violet under sunlight irradiation. The results showed that the decoloration rate of crystal violet with 5% WO3/MoO3 product might reach 89.12% and the removal rate of chemical oxygen demand （COD） is 87.2%. UV -Vis light absorption of WO3 / MoO3 composite with different amounts of WO3 was enhanced. The intensity of PL spectrum was different with the WO3 amount of WO3/MoO3 product. When the mole ratio of WO3 was 5%, the intensity of PL spectrum of WO3 / MoO3 was the lowest, the rate of photocatalytic degradation for crystal violet was the highest.

关 键 词：MOO3 WO3 光致发光 光催化 复合 

分 类 号：O643.36[理学—物理化学]