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Noble metal-free 0D–1D NiCoP/Mn0.3Cd0.7S nanocomposites for highly efficient photocatalytic H2 evolution under visible-light irradiation
- Source :
- Nanotechnology. 31:305701
- Publication Year :
- 2020
- Publisher :
- IOP Publishing, 2020.
-
Abstract
- Efficient and noble metal-free co-catalyst loading is an effective solution for separating and transferring photo-generated carriers and lowering the overpotential in photocatalytic H2 evolution activity. In this work, we designed and prepared a series of novel NiCoP/Mn0.3Cd0.7S (NCP/MCS) composites by modifying MCS nanorods with the co-catalyst NCP using a simple calcination method. Notably, the 10-NCP/MCS composite displays the optimum photocatalytic H2 evolution rate of 118.5 mmol g-1 h-1 under visible-light irradiation. This is approximately 3.39 times higher than that of pure MCS. The corresponding apparent quantum efficiency is 10.2% at 420 nm. The superior photocatalytic activity of the NCP/MCS composites can be attributed to the efficient separation of photogenerated carriers caused by the intimate heterojunction interface between NCP and MCS, smaller transfer resistance, and lower overpotential of NCP. Moreover, the NCP/MCS composites exhibit remarkable photostability. A plausible mechanism is proposed.
- Subjects :
- Materials science
Bioengineering
02 engineering and technology
Overpotential
engineering.material
010402 general chemistry
01 natural sciences
law.invention
law
General Materials Science
Calcination
Electrical and Electronic Engineering
Nanocomposite
Mechanical Engineering
Heterojunction
General Chemistry
021001 nanoscience & nanotechnology
0104 chemical sciences
Chemical engineering
Mechanics of Materials
engineering
Photocatalysis
Nanorod
Noble metal
0210 nano-technology
Visible spectrum
Subjects
Details
- ISSN :
- 13616528 and 09574484
- Volume :
- 31
- Database :
- OpenAIRE
- Journal :
- Nanotechnology
- Accession number :
- edsair.doi...........73881060052cdd3c5f1ae851eca49183
- Full Text :
- https://doi.org/10.1088/1361-6528/ab8850