Journal of Inorganic Materials ›› 2021, Vol. 36 ›› Issue (11): 1217-1222.DOI: 10.15541/jim20200744

Special Issue: 【虚拟专辑】钙钛矿材料(2020~2021) 【能源环境】量子点 【信息功能】Max层状材料、MXene及其他二维材料 【能源环境】钙钛矿

• RESEARCH LETTER • Previous Articles     Next Articles

CsPbBr3 Perovskite Quantum Dots/Ultrathin C3N4 Nanosheet 0D/2D Composite: Enhanced Stability and Photocatalytic Activity

SHU Mengyang(), LU Jialin, ZHANG Zhijie(), SHEN Tao, XU Jiayue()   

  1. School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, China
  • Received:2020-12-30 Revised:2021-04-01 Published:2021-11-20 Online:2021-05-10
  • Contact: ZHANG Zhijie, associate professor. E-mail: zjzhang@sit.edu.cn;XU Jiayue, professor. E-mail: xujiayue@sit.edu.cn
  • About author:SHU Mengyang(1996-), male, Master candidate. E-mail: 277550283@qq.com
  • Supported by:
    National Natural Science Foundation of China(51972213)

Abstract:

Metal-halide perovskite quantum dots (QDs) have emerged as a potential photocatalyst owing to their remarkable optoelectronic properties. However, the poor stability and insufficient charge transportation efficiency of this type of materials hindered their applications in the photocatalysis field. Herein, we decorated CsPbBr3 QDs on two-dimensional (2D) ultrathin g-C3N4 (UCN) nanosheets to develop a 0D/2D CsPbBr3/UCN composite photocatalyst. The introduction of UCN can not only improve the stability of CsPbBr3 QDs by passivating the surface ligands of CsPbBr3 QDs, but also facilitate the charge transfer due to the suited band gap alignment. Consequently, the obtained CsPbBr3/UCN heterostructure exhibited superior photocatalytic performance to both pristine CsPbBr3 QDs and UCN. This work has provided an efficient strategy for the design of CsPbX3-based heterostructure with high stability and photocatalytic activity.

Key words: perovskite quantum dots, 2D ultrathin nanosheets, photocatalysis, CsPbBr3, g-C3N4

CLC Number: