One-pot fabrication of CdxZn1-xS/ZnO nanohybrid using mixed sulfur sources for photocatalysis

Jianhao Qiu, Ming Li, Yiling Wan, Shu Zhang, Huanting Wang, Jianfeng Yao

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14 Citations (Scopus)

Abstract

CdxZn1-xS/ZnO nanohybrids were fabricated by using mixed Na2S and Na2S2O3 as the sulfur source via a facile one-pot synthesis. CdxZn1-xS/ZnO with x = 0.54, 0.58, 0.62, 0.68 and 0.75 was successfully tuned by altering the molar ratio of Na2S and Na2S2O3. Sole sulfur source Na2S or Na2S2O3 could only generate Cd0.5Zn0.5S or CdS/ZnO, respectively. The in-situ co-growth of CdxZn1-xS and ZnO makes them combine penetratingly in CdxZn1-xS/ZnO nanohybrids, giving them a highly intimate contact. The natural matched band-edge positions and highly intimate contacts between CdxZn1-xS and ZnO are conductive to charge separation and transfer. Benefiting from the structural and compositional merits, the optimized CdxZn1-xS/ZnO nanohybrid with sizes of about 5−8 nm exhibited outstanding performance for Cr(VI) reduction under visible-light illumination. The newly designed one-pot synthetic strategy in this work may provide a brand-new pathway in developing high-efficiency multi-component photocatalysts for practical use.

Original languageEnglish
Article number110776
Number of pages7
JournalMaterials Research Bulletin
Volume125
DOIs
Publication statusPublished - May 2020

Keywords

  • CdZnS/ZnO hybrids
  • NaS
  • NaSO
  • One-pot synthesis
  • Photocatalysis

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