任富彦, 孙振, 马涛, 张浩, 卫萌, 陈帅. g-C3N4基异质结光还原CO2的研究进展[J]. 燃料化学学报(中英文). DOI: 10.1016/S1872-5813(24)60482-2
引用本文: 任富彦, 孙振, 马涛, 张浩, 卫萌, 陈帅. g-C3N4基异质结光还原CO2的研究进展[J]. 燃料化学学报(中英文). DOI: 10.1016/S1872-5813(24)60482-2
REN Fuyan, SUN Zhen, MA Tao, ZHANG Hao, WEI Meng, CHEN Shuai. Recent research progress in photocatalytic reduction of CO2 using g-C3N4-based heterostructures[J]. Journal of Fuel Chemistry and Technology. DOI: 10.1016/S1872-5813(24)60482-2
Citation: REN Fuyan, SUN Zhen, MA Tao, ZHANG Hao, WEI Meng, CHEN Shuai. Recent research progress in photocatalytic reduction of CO2 using g-C3N4-based heterostructures[J]. Journal of Fuel Chemistry and Technology. DOI: 10.1016/S1872-5813(24)60482-2

g-C3N4基异质结光还原CO2的研究进展

Recent research progress in photocatalytic reduction of CO2 using g-C3N4-based heterostructures

  • 摘要: 光催化技术能够将CO2转化为有价值的烃类化合物,为解决化石燃料短缺和全球变暖问题提供了新的途径。然而,传统半导体光催化剂由于比表面积小和吸附CO2能力不足,效果有限。g-C3N4凭借其无毒、高稳定性和低成本特性,在光催化领域备受关注。尽管纯g-C3N4的光催化效率受到光生电子/空穴对快速复合、比表面积小和光吸收不足的制约,但通过与大带隙半导体形成异质结构,g-C3N4的电荷分离、比表面积和光吸收能力得到了显著增强。这种基于g-C3N4的异质结构包括半导体支持型、炭材料支持型、非金属支持型以及金属有机骨架支持型,它们在CO2光转换中展现出巨大潜力。然而,改性g-C3N4基异质结构在CO2光转换中仍面临挑战,需要进一步的研究和设计创新。这篇综述强调了基于g-C3N4的异质结构在环保且可持续的CO2还原方法中的重要作用。

     

    Abstract: Photocatalytic technology is capable of converting CO2 into valuable hydrocarbon compounds, providing a new way to solve the problems of fossil fuel shortage and global warming. However, conventional semiconductor photocatalysts have limited effects due to their small specific surface area and insufficient CO2 adsorption capacity. g-C3N4 has attracted much attention in the photocatalytic field due to its non-toxicity, high stability, and low-cost properties. Although the photocatalytic efficiency of pure g-C3N4 is constrained by the fast complexation of photogenerated electron/hole pairs, small surface area, and insufficient light absorption, the charge separation, surface area, and light absorption of g-C3N4 are significantly enhanced by forming a heterostructure with a large bandgap semiconductor. Such g-C3N4-based heterostructures include semiconductor-supported, carbon material-supported, non-metal-supported, and metal-organic backbone-supported types, which show great potential in CO2 photoconversion. However, modified g-C3N4-based heterostructures still face challenges in CO2 photoconversion and require further research and design innovation. This review emphasizes the important role of g-C3N4-based heterostructures in an environmentally friendly and sustainable approach to CO2 reduction.

     

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