Recent developments in fabrication and structure regulation of visible-light-driven g-C3N4-based photocatalysts towards water purification: A critical review
By Sai Zhang, Pengcheng Gu, Ran Ma, C. Luo, T. Wen, Guixia Zhao, Wencai Cheng, Xiangke Wang. Catalysis Today, 2019
414 citations recorded by the source corpus.
Abstract Graphitic carbon nitride (g-C3N4), a conjugated polymer semiconductor, has drawn increasing attention in environmental photocatalysis over the past decade, owing to its highly chemical stability, low cost and suitable electronic structure with a mild energy gap (∼ 2.7 eV). Whereas, its practical applications in wastewater purification are still faced with huge challenges, such as insufficient visible light absorption, low electronic conductivity, poor surface area and fast recombination of photoinduced charge carriers. The modification of g-C3N4 by coupling with other nanomaterials or forming unique nanostructures have been confirmed as valuable strategies. In this review, we give a comprehensive introduction about the recent developments in engineering g-C3N4 by constructing heterostructures or diverse morphologies to improve its photodegradation performance for the photocatalytic degradation of persistent organic pollutants. Such heterojunctions contain metal/g-C3N4, g-C3N4/C-based material and many other binary or ternary composites, and these special morphologies normally include nanorods, nanowires, nanotubes, nanosheets, porous architectures and other different tunable nanostructures. Several enhanced photocatalytic mechanisms for these nanohybrids under visible light irradiation have been explicated in detail, and future perspectives are also concluded in this review.
Subfields: Electrical and Electronic Engineering, Renewable Energy, Sustainability and the Environment
View Paper: https://www.semanticscholar.org/paper/0aeb5cfc58de7d62840d93050e472d6748754717
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Citations in the corpus
- Efficient elimination of environmental pollutants through sorption-reduction and photocatalytic degradation using nanomaterials (2020, background): “To improve the photocatalytic efficiency under visible light conditions, the controllable nanomaterial synthesis is the best method to change the energy gap, to increase favorable structural defects and to generate more active species [8,81].”
- Graphitic carbon nitride (g‐C 3 N 4 )‐based nanosized heteroarrays: Promising materials for photoelectrochemical water splitting (2020, background): “Furthermore, g‐C3N4 with regular tri‐ s‐triazine units is regarded as the most stable phase at ambient conditions, which has been verified by the density functional theory (DFT).(57,58) Unfortunately, despite the above‐mentioned advantages, g‐C3N4 also has some inherent drawbacks limiting its furthe”
- A review of the current status of graphitic carbon nitride (2020, background): “[74,75] Tri-s-triazine has been established to be more stable under ambient conditions.”