- Title
- Photocatalytic solar fuel production and environmental remediation through experimental and DFT based research on CdSe-QDs-coupled P-doped-g-C₃N₄ composites
- Creator
- Raziq, Fazal; Hayat, Asif; Humayun, Muhammad; Baburao Mane, Sunil Kumar; Faheem, M. Bilal; Ali, Asad; Zhao, Yang; Han, Shaobo; Cai, Chao; Li, Wei; Qi, Dong-Chen; Yi, Jiabao; Yu, Xiaojiang; Breese, Mark B. H.; Hassan, Fakhrul; Ali, Farman; Mavlonov, Abdurashid; Dhanabalan, K.; Xiang, Xia; Zu, Xiaotao; Li, Sean; Qiao, Liang
- Relation
- ARC.FT160100205 http://purl.org/au-research/grants/arc/FT160100205
- Relation
- Applied Catalysis B: Environmental Vol. 270, Issue 5 August 2020, no. 118867
- Publisher Link
- http://dx.doi.org/10.1016/j.apcatb.2020.118867
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2020
- Description
- Solar energy harvesting and conversion into useful chemical energy with the aid of semiconductor photocatalysts is a promising technique to solve both energy and environmental issues. This work reports a successful synthesis of CdSe quantum dots (QDs) modified phosphorus doped g-C3N4 (P-CN) for advanced photocatalytic applications. Phosphorus doping and structural coupling with CdSe QDs are shown to significantly extend visible-light response of g-C3N4 up to 700 nm. The optimized sample 4CdSe/P-CN demonstrates enhanced visible-light driven overall water splitting activities for H2 and O2 evolution i.e. 113 and 55.5 μmol.h−1.g−1, respectively, as well as very high photocatalytic CO2 to CH4 conversion efficiency (47 μmol.h−1.g−1). It also exhibit higher activity (78 %) for 2,4-dichlorophenol degradation as compared to pristine CN-sample. Combined photoluminescence, transient/single wavelength photocurrent, photoelectrochemical, and coumarin fluorescence spectroscopy demonstrate that 4CdSe/P-CN nanocomposite exhibit enhanced charge separation efficiency which is responsible for improved visible light catalytic activities. Our work thus provide a new strategy to design low-cost and sustainable photocatalysis with wide visible-light activity for practical overall water splitting and CO2 reduction applications.
- Subject
- phosphorus doping; expending visible-light response; CdSe quantum dots; g-C3N4; solar fuel; SDG 7; SDG 13; Sustainable Development Goals
- Identifier
- http://hdl.handle.net/1959.13/1461877
- Identifier
- uon:46323
- Identifier
- ISSN:0926-3373
- Language
- eng
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Goal 13: Climate Change
Goal 7: Ensure access to affordable, reliable, sustainable and modern energy
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