J. Mater. Sci. Technol. ›› 2021, Vol. 76: 189-199.DOI: 10.1016/j.jmst.2020.11.028

• Research Article • Previous Articles     Next Articles

Facile construction of highly efficient MOF-based Pd@UiO-66-NH2@ZnIn2S4 flower-like nanocomposites for visible-light-driven photocatalytic hydrogen production

Mengting Cao, Fengli Yang, Quan Zhang, Juhua Zhang, Lu Zhang, Lingfeng Li, Xiaohao Wang, Wei-Lin Dai*()   

  1. Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200438, China
  • Received:2020-05-29 Revised:2020-08-14 Accepted:2020-08-17 Published:2021-06-20 Online:2020-11-11
  • Contact: Wei-Lin Dai
  • About author:*E-mail address: wldai@fudan.edu.cn (W.-L. Dai).

Abstract:

Construction of metal-organic-frameworks-based composite photocatalysts has attracted much attention for the reasonable band gap and high surface areas to improve the photocatalytic activity. In this study, the ternary heterojunction Pd@UiO-66-NH2@ZnIn2S4 nanocomposites were facilely prepared for the first time by a two-step method. The visible-light-promoted hydrogen production rate of 0.3 % Pd@UiO-66-NH2@ZnIn2S4 reaches up to 5.26 mmol g-1 h-1, which is evidently much higher than pure UiO-66-NH2, ZnIn2S4 and binary UiO-66-NH2/ZnIn2S4 composites. Such a huge improvement in the photocatalytic performance is mainly attributed to the matched band gap of ZnIn2S4 and UiO-66-NH2, and the introduction of Pd NPs into photocatalysts that broaden spectral response range and promote the photon induced charge carrier separation. This work may provide a feasible approach for the design and construction of metal-organic-frameworks-based photocatalytic materials.

Key words: Metal-organic frameworks (MOFs), UiO-66-NH2, ZnIn2S4, Pd nanoparticles, Photocatalytic hydrogen production