摘要
To date,extensively high demand for hydrogen peroxide(H_(2)O_(2))has been predominantly supplied by the anthraquinone process for several worldwide applications,encompassing wastewater treatment,environmental remediation,and chemical synthesis.However,the compacted manufacturing,massive energy input and the release of tremendous wastes have restricted commercialization feasibility.Regards to mitigate such issues,the photocatalytic H_(2)O_(2)production by utilizing g-C_(3)N_(4)catalysts has endowed a greener,sustainable and promising alternative,considering that it involves water and oxygen as reactants in the present of sunlight as energy input.Herein,we have manifested a comprehensive overview of the research progress for g-C_(3)N_(4)-based semiconductors for photocatalytic H_(2)O_(2)generation.This review has systematically elucidated state-of-the-art development of different modifications on g-C_(3)N_(4)to unravel the fundamental mechanism of H_(2)O_(2)evolution via oxygen reduction reaction(ORR)and water oxidation reaction(WOR).In addition,the contribution made by vacancy introduction,doping,heterogenization,and co-catalyst passivation with respect to photoefficiency enhancement have been clarified.Furthermore,the current challenges and perspective of future development directions on photocatalytic H_(2)O_(2)production have also been highlighted.As such,g-C_(3)N_(4)stands as the next step toward advancement in the configuration and modulation of high-efficiency photocatalysts.
基金
the Ministry of Higher Education(MOHE)Malaysia under the Fundamental Research Grant Scheme(FRGS)(Ref no:FRGS/1/2020/TK0/XMU/02/1)
the Ministry of Science,Technology and Innovation(MOSTI)Malaysia under the Strategic Research Fund(SRF-APP)(S.22015)
the National Natural Science Foundation of China(Ref no:22202168)
Guangdong Basic and Applied Basic Research Foundation(Ref no:2021A1515111019)
Xiamen University Malaysia Investigatorship Grant(Grant no:IENG/0038)
Xiamen University Malaysia Research Fund(ICOE/0001,XMUMRF/2021-C8/IENG/0041 and XMUMRF/2019-C3/IENG/0013)
Hengyuan International Sdn.Bhd.(Grant no:EENG/0003).
