A Comprehensive Review of Graphitic Carbon Nitride (g-C3N4)-Metal Oxide-Based Nanocomposites: Potential for Photocatalysis and Sensing

被引:249
作者
Alaghmandfard, Amirhossein [1 ]
Ghandi, Khashayar [1 ]
机构
[1] Univ Guelph, Dept Chem, Guelph, ON N1G 2W1, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
graphitic carbon nitride; g-C3N4; metal oxide; photocatalysts; sensors; bacterial disinfection; supercapacitors; Z-SCHEME PHOTOCATALYST; LIGHT-DRIVEN PHOTOCATALYST; IN-SITU CONSTRUCTION; CO-DOPED G-C3N4; ENHANCED PHOTOELECTROCHEMICAL PERFORMANCE; POLYCYCLIC AROMATIC-HYDROCARBONS; MICROWAVE-ASSISTED SYNTHESIS; SOLID-PHASE EXTRACTION; ZNO-MODIFIED G-C3N4; ONE-STEP SYNTHESIS;
D O I
10.3390/nano12020294
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
g-C3N4 has drawn lots of attention due to its photocatalytic activity, low-cost and facile synthesis, and interesting layered structure. However, to improve some of the properties of g-C3N4, such as photochemical stability, electrical band structure, and to decrease charge recombination rate, and towards effective light-harvesting, g-C3N4-metal oxide-based heterojunctions have been introduced. In this review, we initially discussed the preparation, modification, and physical properties of the g-C3N4 and then, we discussed the combination of g-C3N4 with various metal oxides such as TiO2, ZnO, FeO, Fe2O3, Fe3O4, WO3, SnO, SnO2, etc. We summarized some of their characteristic properties of these heterojunctions, their optical features, photocatalytic performance, and electrical band edge positions. This review covers recent advances, including applications in water splitting, CO2 reduction, and photodegradation of organic pollutants, sensors, bacterial disinfection, and supercapacitors. We show that metal oxides can improve the efficiency of the bare g-C3N4 to make the composites suitable for a wide range of applications. Finally, this review provides some perspectives, limitations, and challenges in investigation of g-C3N4-metal-oxide-based heterojunctions.
引用
收藏
页数:73
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