CIESC Journal ›› 2020, Vol. 71 ›› Issue (6): 2780-2787.DOI: 10.11949/0438-1157.20191416

• Material science and engineering, nanotechnology • Previous Articles     Next Articles

Preparation of MOFs-derived hollow Co3O4/CdIn2S4 heterojunction with enhanced photocatalytic carbon dioxide reduction activity

Jinman YANG(),Xingwang ZHU,Guli ZHOU,Hui XU(),Huaming LI   

  1. Institute for Energy Research, Jiangsu University, Zhenjiang 212013, Jiangsu, China
  • Received:2019-11-25 Revised:2020-02-22 Online:2020-06-05 Published:2020-06-05
  • Contact: Hui XU

MOFs诱导中空Co3O4/CdIn2S4合成及光催化CO2还原性能研究

杨金曼(),朱兴旺,周固礼,许晖(),李华明   

  1. 江苏大学能源研究院,江苏 镇江 212013
  • 通讯作者: 许晖
  • 作者简介:杨金曼(1994—),女,博士研究生,1002445309@qq.com
  • 基金资助:
    国家自然科学基金项目(21776118);江苏省杰出青年科学家基金项目(BK20190045)

Abstract:

Photocatalytic carbon dioxide conversion technology can not only use inexhaustible solar energy, but also convert carbon dioxide into high-value-added carbon-based fuels, which has attracted extensive attention from researchers. Herein, we designed and fabricated the Co3O4/CdIn2S4 heterojunction photocatalyst with hollow structure to convert CO2. With series of measurement, the results show that the efficient coupling of the two materials could greatly promote photo-generated carriers separation and press the recombination of that, meanwhile, the introduction of MOFs template could help catalyst to expose more active sites. Based on the above unique advantages and compared to the pure CdIn2S4, the 5% Co3O4/CdIn2S4 heterojunction performs well in whole photocatalytic reduction process, which can generate the CO. And CO generation rate could be up to 74 μmol·g-1·h-1 and selectivity could be 100%.

Key words: photocatalytic, CO2 reduction, hollow, Co3O4/CdIn2S4 heterojunction

摘要:

光催化二氧化碳转化技术,不仅可以利用取之不尽用之不竭的太阳光能,而且可将二氧化碳转化为高附加值的碳基燃料,受到研究者们的广泛关注。实验设计合成了新颖的中空结构的Co3O4/CdIn2S4异质结光催化剂。两种半导体的高效耦合作用极大地促进了光生载流子分离,同时形成更多暴露活性位点。基于异质结独特的结构优势,表现出高效的CO2还原性能,5% Co3O4/CdIn2S4 的CO生成速率达74 μmol·g-1·h-1,与单体CdIn2S4相比,不仅活性得到很大提升,同时CO选择性达到100%。

关键词: 光催化, CO2还原, 中空, Co3O4/CdIn2S4异质结

CLC Number: