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Enhanced photocarriers separation of novel CdS/pt/Mo 2 C heterostructure for visible-light-driven hydrogen evolution.
- Source :
-
RSC advances [RSC Adv] 2018 Oct 03; Vol. 8 (59), pp. 33993-33999. Date of Electronic Publication: 2018 Oct 03 (Print Publication: 2018). - Publication Year :
- 2018
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Abstract
- The production of H <subscript>2</subscript> from water using photocatalysts is a promising way of generating clean, renewable and alternative energy. The key issue is to develop active and stable photocatalysts. Here, we report a novel CdS/Pt/Mo <subscript>2</subscript> C heterostructure photocatalyst, where Pt nanoparticles are closely supported on CdS/Mo <subscript>2</subscript> C. The UV-vis spectrum and EIS Nyquist plots show that Mo <subscript>2</subscript> C can boost the absorption in the UV-vis region and improve the separation of the photogenerated electron-hole pairs from CdS. The Pt nanoparticles act as the active co-catalyst that promotes the transient photocurrent response. As a result, the CdS/Pt/Mo <subscript>2</subscript> C photocatalyst exhibits an excellent H <subscript>2</subscript> evolution activity up to 1828.82 μmol h <superscript>-1</superscript> g <superscript>-1</superscript> under visible-light irradiation, 8.5 and 16.2 times higher than that of pristine CdS and CdS/Mo <subscript>2</subscript> C, respectively. Moreover, a high apparent quantum yield (AQY) of 9.39% is obtained at 400 nm for the CdS/Pt/Mo <subscript>2</subscript> C heterostructure photocatalyst.<br />Competing Interests: There are no conflicts to declare.<br /> (This journal is © The Royal Society of Chemistry.)
Details
- Language :
- English
- ISSN :
- 2046-2069
- Volume :
- 8
- Issue :
- 59
- Database :
- MEDLINE
- Journal :
- RSC advances
- Publication Type :
- Academic Journal
- Accession number :
- 35548809
- Full Text :
- https://doi.org/10.1039/c8ra05473h