Details
| Original language | English |
|---|---|
| Pages (from-to) | 1587-1596 |
| Number of pages | 10 |
| Journal | Applied Nanoscience (Switzerland) |
| Volume | 8 |
| Issue number | 6 |
| Early online date | 3 Jul 2018 |
| Publication status | Published - Aug 2018 |
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.
Keywords
- Hydrogen production, Mesoporous graphite-like C N, NiS, Visible light
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Biotechnology
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Materials Science(all)
- Materials Science (miscellaneous)
- Chemistry(all)
- Physical and Theoretical Chemistry
- Biochemistry, Genetics and Molecular Biology(all)
- Cell Biology
- Engineering(all)
- Electrical and Electronic Engineering
Sustainable Development Goals
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In: Applied Nanoscience (Switzerland), Vol. 8, No. 6, 08.2018, p. 1587-1596.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Decoration of mesoporous graphite-like C3N4 nanosheets by NiS nanoparticle-driven visible light for hydrogen evolution
AU - Kadi, Mohammad W.
AU - Mohamed, Reda M.
AU - Ismail, Adel A.
AU - Bahnemann, Detlef W.
N1 - Publisher Copyright: © 2018, Springer-Verlag GmbH Germany, part of Springer Nature. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2018/8
Y1 - 2018/8
N2 - 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.
AB - 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.
KW - Hydrogen production
KW - Mesoporous graphite-like C N
KW - NiS
KW - Visible light
UR - http://www.scopus.com/inward/record.url?scp=85056472550&partnerID=8YFLogxK
U2 - 10.1007/s13204-018-0835-4
DO - 10.1007/s13204-018-0835-4
M3 - Article
VL - 8
SP - 1587
EP - 1596
JO - Applied Nanoscience (Switzerland)
JF - Applied Nanoscience (Switzerland)
SN - 2190-5509
IS - 6
ER -