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Graphitic Carbon Nitride Heterojunction Photocatalysts for Solar Hydrogen Production


Photocatalytic hydrogen production is considered as an ideal approach to solve global energy crisis and environmental pollution. Graphitic carbon nitride (g-C3N4) has received extensive consideration due to its facile synthesis, stable physicochemical properties, and easy functionalization. However, the pristine g-C3N4 usually shows unsatisfactory photocatalytic activity due to the limited separation efficiency of photogenerated charge carriers. Generally, introducing semiconductors or co-catalysts to construct g–C3N4–based heterojunction photocatalysts is recognized as an effective method to solve this bottleneck. In this review, the advantages and characteristics of various types of g–C3N4–based heterojunction are analyzed. Subsequently, the recent progress of highly efficient g–C3N4–based heterojunction photocatalysts in the field of photocatalytic water splitting is emphatically introduced. Finally, a vision of future perspectives and challenges of g–C3N4–based heterojunction photocatalysts in hydrogen production are presented. Predictably, this timely review will provide valuable reference for the design of efficient heterojunctions towards photocatalytic water splitting and other photoredox reactions.

Funding source: This work was funded by the National Natural Science Foun- dation of China (Grant No. 61605028, 61775040, and 21673043); Program for Minjiang Scholar (YZ); and Program for Thousand Young Talent Plan (YZ); China Scholarship Council; Stiftelsen Olle Engkvist Byggm€astare (SOEB-2015/167); Swedish Research Council (2018-06868); and Swedish Energy Agency (46641-1)
Related subjects: Production & Supply Chain

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