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Sub 10 nm CoO nanoparticle-decorated graphitic carbon nitride for solar hydrogen generation: via efficient charge separation

Title
Sub 10 nm CoO nanoparticle-decorated graphitic carbon nitride for solar hydrogen generation: via efficient charge separation
Authors
Mondal, AniruddhaBiswas, ShubhamSrishtiKumar, AdityaYu, Jong-SungSinhamahapatra, Apurba
DGIST Authors
Mondal, Aniruddha; Biswas, Shubham; Srishti; Kumar, Aditya; Yu, Jong-Sung; Sinhamahapatra, Apurba
Issue Date
2020-10
Citation
Nanoscale Advances, 2(10), 4473-4481
Type
Article
Article Type
Article
Keywords
Graphitic Carbon NitrideHeterojunctionsNanoparticlesTriethanolamineCharge separationsEnvironmental issuesHydrogen generationsNanoparticle (NPs)Photogenerated electronsSimulated sunlightSolar-hydrogen generationCobalt compoundsDeionized waterType II hetero junctionsHydrogen production
ISSN
2516-0230
Abstract
Solar hydrogen generation is one of the most compelling concepts in modern research to address both the energy and environmental issues simultaneously for the survival of the human race. A Type II heterojunction (CoO-GCN) was fabricated by decorating sub 10 nm CoO nanoparticles (NPs) on the graphitic carbon nitride (GCN) surface. It exhibited improved absorption of UV-VIS light and efficiently separate the photogenerated electrons and holes in opposite directions. A maximum hydrogen generation rate of 9.8 mmol g-1 h-1 was recorded using CoO-GCN from 10% aqueous triethanolamine under simulated sunlight in the presence of 1 wt% Pt. The rate is 3.8 times higher than that of bare GCN. Furthermore, it showed excellent stability for up to five repeated uses. Interestingly, the study also revealed that untreated seawater could replace the deionized water. The cooperative participation of the uniform shape and size of CoO NPs firmly grafted on GCN resulted in remarkable performance for solar hydrogen generation. This journal is © 2020 The Royal Society of Chemistry.
URI
http://hdl.handle.net/20.500.11750/12711
DOI
10.1039/d0na00508h
Publisher
The Royal Society of Chemistry
Related Researcher
  • Author Yu, Jong-Sung Light, Salts and Water Research Group
  • Research Interests Materials chemistry; nanomaterials; electrochemistry; carbon and porous materials; fuel cell; battery; supercapacitor; sensor and photochemical catalyst
Files:
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Collection:
Department of Energy Science and EngineeringLight, Salts and Water Research Group1. Journal Articles


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