Applied Nanoscience

, Volume 8, Issue 6, pp 1587–1596 | Cite as

Decoration of mesoporous graphite-like C3N4 nanosheets by NiS nanoparticle-driven visible light for hydrogen evolution

  • Mohammad W. Kadi
  • Reda M. MohamedEmail author
  • Adel. A. Ismail
  • Delft. W. Bahnemann
Original Article


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 C3N4 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-C3N4 nanosheets at various NiS contents (5–20%). the photocatalytic efficiency of the prepared NiS/g-C3N4 nanocomposites was investigated and compared with those of pure NiS and g-C3N4 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-C3N4 is significant in the enhancement of the photocatalytic response of g-C3N4. 15% NiS/g-C3N4 nanocomposite is the optimized photocatalyst and its photocatalytic activity is larger than both NiS and g-C3N4 by about 48 and 114 times, respectively. 15% NiS/g-C3N4 nanocomposite has photocatalytic stability up to five times. The enrichment of the photocatalytic efficiency of NiS/g-C3N4 photocatalyst could be attributed to the presence of NiS nanoparticles as co-catalyst, which enables efficient charge carrier separation of g-C3N4, mesostructure, large surface area and narrow band gap.


Mesoporous graphite-like C3N4 NiS Visible light Hydrogen production 



This project was funded by the Deanship of Scientific Research (DSR) at King Abdulaziz University, Jeddah, under grant no. RG-18-130-38. The authors, therefore, acknowledge DSR for technical and financial support.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Mohammad W. Kadi
    • 1
  • Reda M. Mohamed
    • 1
    • 2
    Email author
  • Adel. A. Ismail
    • 2
    • 3
  • Delft. W. Bahnemann
    • 3
    • 4
  1. 1.Department of Chemistry, Faculty of ScienceKing Abdulaziz UniversityJeddahKingdom of Saudi Arabia
  2. 2.Advanced Materials DepartmentCentral Metallurgical R&D Institute, CMRDICairoEgypt
  3. 3.Photocatalysis and Nanotechnology Unit, Institute of Technical ChemistryLeibniz Hannover UniversityHannoverGermany
  4. 4.Photoactive Nanocomposite Materials, Saint-PetersburgState UniversitySaint-PetersburgRussia

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