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CoSe 2 Embedded in C 3 N 4 : An Efficient Photocathode for Photoelectrochemical Water Splitting.
- Source :
-
ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2016 Oct 12; Vol. 8 (40), pp. 26690-26696. Date of Electronic Publication: 2016 Sep 27. - Publication Year :
- 2016
-
Abstract
- An efficient H <subscript>2</subscript> evolution catalyst is developed by grafting CoSe <subscript>2</subscript> nanorods into C <subscript>3</subscript> N <subscript>4</subscript> nanosheets. The as-obtained C <subscript>3</subscript> N <subscript>4</subscript> -CoSe <subscript>2</subscript> heterostructure can show excellent performance in H <subscript>2</subscript> evolution with outstanding durability. To generate phatocathode for photoelectrochemical water splitting CoSe <subscript>2</subscript> grafted in C <subscript>3</subscript> N <subscript>4</subscript> was decorated on the top of p-Si microwires (MWs). p-Si/C <subscript>3</subscript> N <subscript>4</subscript> -CoSe <subscript>2</subscript> heterostructure can work as an efficient photocathode material for solar H <subscript>2</subscript> production in PEC water splitting. In 0.5 M H <subscript>2</subscript> SO <subscript>4</subscript> , p-Si/C <subscript>3</subscript> N <subscript>4</subscript> -CoSe <subscript>2</subscript> can afford photocurrent density -4.89 mA/cm <superscript>2</superscript> at "0" V vs RHE and it can efficiently work for 3.5 h under visible light. Superior activity of C <subscript>3</subscript> N <subscript>4</subscript> -CoSe <subscript>2</subscript> compared to CoSe <subscript>2</subscript> toward H <subscript>2</subscript> evolution is explained with the help of impedance spectroscopy.
Details
- Language :
- English
- ISSN :
- 1944-8252
- Volume :
- 8
- Issue :
- 40
- Database :
- MEDLINE
- Journal :
- ACS applied materials & interfaces
- Publication Type :
- Academic Journal
- Accession number :
- 27635665
- Full Text :
- https://doi.org/10.1021/acsami.6b06520