Application of content optimized ZnS-ZnO-CuS-CdS heterostructured photocatalyst for solar water splitting and organic dye decomposition

Eunpyo Hong, Taeseok Choi, Jung Hyeun Kim

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Heterostructured ZnS-ZnO-CuS-CdS photocatalyst was synthesized via a sequential fabrication approach (ZnS→thermal treatment (ZnS-ZnO)→CuS formation (ZnS-ZnO-CuS)→CdS addition (ZnS-ZnO-CuS-CdS)). Each component in this heterostructure has its own role for photocatalytic reaction. The oxide content controlled by thermal processing condition is a crucial factor for improving photocatalytic activity, and the CuS and CdS contents are controlled by their feedstocks. The effects of heterostructure composition on the solar water splitting and organic dye decomposition were investigated under 1 sun irradiation (100 mW/cm2, AM 1.5G filter). The content optimized ZnS-ZnO-CuS-CdS photocatalyst produces 2452.7 μmol g−1 h−1 hydrogen, and it decomposes methyl blue much faster than the other cases. Thus, heterostructured photocatalysts can benefit the use of electrons and holes for improved photocatalytic activity.

Original languageEnglish
Pages (from-to)424-428
Number of pages5
JournalKorean Journal of Chemical Engineering
Volume32
Issue number3
DOIs
StatePublished - Mar 2015

Keywords

  • Dye Decomposition
  • Heterostructure
  • Optimal Composition
  • Photocatalytic Hydrogen Production
  • ZnS-ZnO-CuS-CdS

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