日用化学工业（中英文）2024，Vol.54Issue(6)：669-676,8.DOI:10.3969/j.issn.2097-2806.2024.06.007
C-O官能团修饰的CaMoO4光催化剂的合成与光催化活性研究
Synthesis and photocatalytic activity of a CaMoO4 photocatalyst modified with C-O functional groups
汪磊 1田君1
作者信息
- 1. 银川能源学院 化学与生物工程学院,宁夏 银川 750000
- 折叠
摘要
Abstract
A CaMoO4 photocatalyst with high activity for degradation of aureomycin hydrochloride was prepared by sol-gel method.The phase structure,purity,functional group,surface morphology,optical properties and photocatalytic activity of the CaMoO4 photocatalyst were investigated by various characterization methods.The results showed that the CaMoO4 photocatalyst was tetragonal phase,and a small amount of C-O functional groups were present in the sample.The particles were approximately spherical,which consisted of large particles and fine particles.It had high visible-light response with an optical band gap value of 3.21 eV.The photocatalytic activity of CaMoO4 photocatalyst was studied at different drug concentrations,catalyst dosages and pH values using aureomycin hydrochloride as the target for degradation.The results showed that the degradation percentage reached 94％at the drug mass concentration of 200 mg/L,photocatalyst dosage of 1 g/L and pH of 7.The photocatalytic mechanism of the CaMoO4 photocatalyst was proposed based on experimental results and band theory.The mechanism study showed that the C-O functional groups provided extra energy for electron transition to the conduction band of the CaMoO4 photocatalyst and promoted the generation of electron hole pairs.Holes,hydroxyl radicals and superoxide radicals were the key factors to promote the degradation of aureomycin hydrochloride.关键词
溶胶凝胶法/钼酸钙/光催化机理/导带/自由基Key words
sol-gel method/CaMoO4/photocatalytic mechanism/conduction band/free radical分类
数理科学引用本文复制引用
汪磊,田君..C-O官能团修饰的CaMoO4光催化剂的合成与光催化活性研究[J].日用化学工业（中英文）,2024,54(6):669-676,8.
