Jump to main content
Jump to site search


Rational Design of a Novel Quaternary ZnO@ZnS/Ag@Ag2S Nanojunction System for Enhanced Photocatalytic H2 Production

Abstract

Semiconductor photocatalysis provides a promising potential solution to the challenging issues of clean energy production. Construction of multi-junction systems is an effective strategy to overcome the serious drawbacks of fast charge recombination and the limited visible-light absorption of semiconductor photocatalysts. Here, we report a novel quaternary heterogeneous photocatalyst fabricated by loading Ag nanoparticles onto ZnO nanowires and subsequently via a one-step anion-exchange sulfuration reaction process to form core/shell structured ZnO@ZnS and Ag@Ag2S heterojunctions simultaneously. The resulting four-component ZnO@ZnS/Ag@Ag2S multijunction photocatalyst exhibits a high hydrogen evolution activity (140.3 µmol/g) under simulated solar light irradiation in 5 h, far exceeding those of ZnO alone (30.8 µmol/g), ZnO@ZnS (92.8 µmol/g) and ZnO/Ag (45.1 µmol/g) counterparts. The enhanced photocatalytic activity can be attributed to the synergetic effect of the formation of both Z-scheme and type II core/shell heterojunctions that favors the light absorption and separation of photogenerated electron-hole pairs in the composite. This work provides a facile way to fabricate multi-component heterostructures in a controlled manner for designing efficient semiconductor-based composite photocatalysts for solar water splitting.

Back to tab navigation

Supplementary files

Publication details

The article was received on 09 Aug 2018, accepted on 09 Oct 2018 and first published on 10 Oct 2018


Article type: Research Article
DOI: 10.1039/C8QI00828K
Citation: Inorg. Chem. Front., 2018, Accepted Manuscript
  •   Request permissions

    Rational Design of a Novel Quaternary ZnO@ZnS/Ag@Ag2S Nanojunction System for Enhanced Photocatalytic H2 Production

    Y. Su, Z. Zhao, S. Li, F. Liu and Z. Zhang, Inorg. Chem. Front., 2018, Accepted Manuscript , DOI: 10.1039/C8QI00828K

Search articles by author

Spotlight

Advertisements