摘要
以亚碲酸钠,氧化锌为前驱体,采用溶剂热法合成了ZnTe/ZnO类球状复合材料,通过控制合成ZnTe颗粒的量来研究复合样的光催化性能.XRD确定合成样品为ZnTe/ZnO复合材料,SEM表征样品形貌为类球状复合物,UV-Vis测试样品光学特性,PL和EIS测试解释复合样光催化增强的原因,实验结果验证了在紫外光照射下光催化性能复合样优于纯相,而且以ZnO和Na_2TeO_3物质的量比为1∶0.4时合成的ZnTe/ZnO类球状复合样表现出最佳光催化活性,40min降解亚甲基蓝达到91%.
Using with Sodium tellurite and zinc oxide as precursor ZnTe/ZnO globular-like composites were synthesized by the solvothermal method. The photocatalytic activity of ZnTe/ZnO globular-like composites were studied by adjusting the ratio of the amount of synthetic ZnTe particles. The XRD results showed the samples ascribed to ZnTe/ZnO composite. The SEM results showed that the morphologies of the composite were globular-like. UV-Vis used to test optical properties. PL and EIS explained the reason why photocatalytic activity of composites developed. The experimental results showed that photocata- lyric activity of ZnTe/ZnO compositions were better than pure phase. In addition,＂ when the molar ratio of Na2TeO3 and ZnO was 1 ： 0.4, the obtained composite showed the best photocatalytic performance because of degradation efficiency of methylene blue reached to 91 0/60 after 40 rain UV irradiation.
出处
《河南师范大学学报（自然科学版）》
CAS
北大核心
2016年第3期41-46,共6页
Journal of Henan Normal University(Natural Science Edition)
基金
国家自然科学基金(11164026)
