Decoration of mesoporous graphite-like C3N4 nanosheets by NiS nanoparticle-driven visible light for hydrogen evolution
- authored by
- Mohammad W. Kadi, Reda M. Mohamed, Adel A. Ismail, Detlef W. Bahnemann
- Abstract
Separation of photogenerated electrons from holes is an important factor that increases hydrogen evolution rate in the water splitting reaction. This recombination prevention can be achieved by co-catalyst’s deposition onto the semiconductor material’s surfaces. In this contribution, synthesis of mesoporous C
3N
4 of graphite-like structure by a combustion technique employing high mesoporous silica as a template has been achieved. Subsequently, NiS nanoparticles were decorated as g-C
3N
4 nanosheets at various NiS contents (5–20%). the photocatalytic efficiency of the prepared NiS/g-C
3N
4 nanocomposites was investigated and compared with those of pure NiS and g-C
3N
4 for evolution of hydrogen using glycerol as a scavenger upon visible light illumination. The findings indicated that the content of deposited NiS nanoparticles onto g-C
3N
4 is significant in the enhancement of the photocatalytic response of g-C
3N
4. 15% NiS/g-C
3N
4 nanocomposite is the optimized photocatalyst and its photocatalytic activity is larger than both NiS and g-C
3N
4 by about 48 and 114 times, respectively. 15% NiS/g-C
3N
4 nanocomposite has photocatalytic stability up to five times. The enrichment of the photocatalytic efficiency of NiS/g-C
3N
4 photocatalyst could be attributed to the presence of NiS nanoparticles as co-catalyst, which enables efficient charge carrier separation of g-C
3N
4, mesostructure, large surface area and narrow band gap.
- Organisation(s)
-
Institute of Technical Chemistry
- External Organisation(s)
-
King Abdulaziz University
Central Metallurgical Research and Development Institute, Cairo
Saint Petersburg State University
- Type
- Article
- Journal
- Applied Nanoscience (Switzerland)
- Volume
- 8
- Pages
- 1587-1596
- No. of pages
- 10
- ISSN
- 2190-5509
- Publication date
- 08.2018
- Publication status
- Published
- Peer reviewed
- Yes
- ASJC Scopus subject areas
- Biotechnology, Atomic and Molecular Physics, and Optics, Materials Science (miscellaneous), Physical and Theoretical Chemistry, Cell Biology, Electrical and Electronic Engineering
- Sustainable Development Goals
- SDG 7 - Affordable and Clean Energy
- Electronic version(s)
-
https://doi.org/10.1007/s13204-018-0835-4 (Access:
Closed)
