欢迎访问《人工晶体学报》官方网站,今天是 分享到:

人工晶体学报 ›› 2021, Vol. 50 ›› Issue (1): 122-129.

• 研究论文 • 上一篇    下一篇

ZnSn(OH)6/SrSn(OH)6光催化降解甲苯的性能研究

潘睿1, 傅敏1,2, 陈正波1, 胡雪利1   

  1. 1.重庆工商大学环境与资源学院,重庆 400067;
    2.催化与环境新材料重庆市重点实验室,重庆 400067
  • 收稿日期:2020-10-08 出版日期:2021-01-15 发布日期:2021-03-01
  • 通讯作者: 傅 敏,教授。E-mail:fumin1022@126.com
  • 作者简介:潘 睿(1998—),女,四川省人,硕士研究生。E-mail:840125077@qq.com
  • 基金资助:
    重庆市教委科学技术研究项目(KJZD-M201800801);重庆市高校优秀成果转化资助项目(KJZH17122);重庆市技术创新与应用发展专项面上项目(cstcjscx-msxm1374)

Photocatalytic Degradation of Toluene by ZnSn(OH)6/SrSn(OH)6

PAN Rui1, FU Min1,2, CHEN Zhengbo1, HU Xueli1   

  1. 1. College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China;
    2. Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing 400067, China
  • Received:2020-10-08 Online:2021-01-15 Published:2021-03-01

摘要: 采用简单的共沉淀法制备了新型ZnSn(OH)6/SrSn(OH)6复合光催化剂。利用X射线衍射(XRD)、X射线光电子能谱(XPS)、紫外可见-漫反射吸收光谱(UV-Vis)、N2吸附脱附、扫描电镜(SEM)、透射电镜(TEM)对样品的结构、形貌和光吸收性质进行了表征,并以甲苯为目标污染物对其光催化性能进行评价。结果表明,与纯相SrSn(OH)6和ZnSn(OH)6相比,复合材料ZnSn(OH)6/SrSn(OH)6的紫外光吸收能力显著增强,光生载流子的复合效率降低,进而增强了其光催化降解甲苯的效率。复合样品ZSH/SSH-10摩尔比为10%对甲苯的降解率达到58%,是SrSn(OH)6单体的1.35倍。循环使用5次后,ZSH/SSH-10的降解率仍保持51%以上,说明该催化剂具有良好的循环稳定性。

关键词: ZnSn(OH)6/SrSn(OH)6, 共沉淀法, 光催化降解, 甲苯, 挥发性有机化合物, 异质结

Abstract: A new type of ZnSn(OH)6/SrSn(OH)6 composite photocatalyst was prepared by a simple co-precipitation method. The structure, morphology and light absorption properties of the samples were characterized by XRD, XPS, UV-Vis, N2 adsorption and desorption, scanning electron microscope(SEM), transmission electron microscope(TEM). Its photocatalytic performance was evaluated by toluene target pollutant. The results show that compared with the pure phase SrSn(OH)6 and ZnSn(OH)6, the composite material ZnSn(OH)6/SrSn(OH)6 has significantly enhanced ultraviolet light absorption capacity, and the recombination efficiency of photogenerated carriers reduce. Furthermore, the efficiency of photocatalytic degradation of toluene is enhanced. The degradation rate of toluene in the composite sample ZSH/SSH-10(molar ratio is 10%) is more than 58%, which is 1.35 times that of SrSn(OH)6 monomer. The degradation of toluene for ZSH/SSH-10 catalyst is still 51% after recycling 5 times, indicating that the catalyst has good recycling stability.

Key words: ZnSn(OH)6/SrSn(OH)6, co-precipitation method, photocatalytic degradation, toluene, VOC, heterojunction

中图分类号: