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WO3&WS2 nanorods coupled with CdS nanoparticles for enhanced visible light driven hydrogen evolution.
- Source :
-
Applied Surface Science . Aug2018, Vol. 448, p539-546. 8p. - Publication Year :
- 2018
-
Abstract
- Ternary nanocomposites comprised of one-dimensional (1D) WO 3 &WS 2 nanorods (NRs) and CdS nanoparticles (NPs) fabricated through a two-step process were characterized using a combination of X-ray, microscopy, and spectroscopy techniques. The amount of CdS strongly influences the properties of the nanocomposites, with 40 wt.% of CdS loading showing optimal optical properties and photoelectrochemical (PEC) as well as photocatalytic activities for hydrogen evolution reaction (HER). Compared with WO 3 &WS 2 NRs, the optimized nanocomposite shows 11.4 times enhancement in photocurrent and 6 times increase for HER with lactic acid as a sacrificial agent. The enhanced PEC and HER activities can be attributed to CdS absorption of visible light as well as the intimate contact between WO 3 &WS 2 and CdS that efficiently enhances charge carrier separation. This work demonstrated a promising strategy in the design and fabrication of high-performance photocatalysts for photocatalytic HER applications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01694332
- Volume :
- 448
- Database :
- Academic Search Index
- Journal :
- Applied Surface Science
- Publication Type :
- Academic Journal
- Accession number :
- 129464890
- Full Text :
- https://doi.org/10.1016/j.apsusc.2018.04.153