摘要
以镉盐和钼盐为原料,采用水热法制备CdMoO4光催化剂,通过优化水热温度和水热时间,得到制备CdMoO4光催化活性最优的条件。以光催化降解染料为模型反应,研究发现当水热温度为403 K和水热时间为12 h时,所得的CdMoO4光催化性能最优,在紫外光下照射50 min,对罗丹明B的降解率达99.6%,对甲基橙的降解率达97.4%,说明CdMoO4降解有机染料具有普适性。通过一系列表征,发现最优光催化活性CdMoO4晶相是纯相、外形呈0.5-1.5μm微球并且表面附着30-100 nm颗粒;还发现引起光催化活性差异的原因可能是催化剂吸附染料的性能不同。
Based cadmium salt and molybdenum salt as materials,CdMoO4 photocatalyst is prepared by hydrothermal method. By optimizing the hydrothermal temperature and hydrothermal time,the optimum photocatalytic activity conditions of preparing CdMoO4 were got. According to the study,photocatalytic degradation of dyes was chosen as model reaction. When the hydrothermal temperature was 403 K and the hydrothermal time was 12 hours,the CdMoO4 photocatalyst performance was confirmed to be the best. Under the irradiation of Ultraviolet light for 50 minutes,the degradation efficiency over Rhodamine B（ Rh B） was 97. 7%,and the degradation efficiency over Methyl Orange（ MO） was 97. 7%. This indicated that CdMoO4 degradation of organic dyes was universal. Through a series of characterization,it was found that the crystal phases of CdMoO4 was pure,the appearance was 0. 5-1. 5 μm microspheres,and the surface was attached to 30-100 nm particles when photocatalytic activity was optimum,and it was also observed that the difference in the photocatalytic activity was possible up to the different adsorption performance for dyes of the catalyst.
出处
《四川理工学院学报（自然科学版）》
CAS
2016年第6期6-11,共6页
Journal of Sichuan University of Science & Engineering(Natural Science Edition)
基金
福建省自然科学基金青年创新资助项目(2015J05027)
福建省高校杰出青年科研人才培育计划(2015-54)
闽南师范大学杰出青年科研人才培育计划(MJ14004)
中国科学院城市污染物转化重点实验室开放课题(KLUPC20160005)
关键词
CdMoO4
光催化
优化制备
环境净化
CdMoO4
photocatalysis
optimizing preparation
environmental purification
