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
任富彦 1孙振 1马涛 1张浩 1卫萌 1陈帅1
作者信息
- 1. 新疆科技学院,新疆库尔勒 841000
- 折叠
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 hydrocarbons,providing a new way to solve the problems of fossil fuel shortage and global warming.However,conventional semiconductor photocatalysts are limited by the small specific surface area and insufficient CO2 adsorption capacity.g-C3N4 has attracted much attention due to its non-toxicity,high stability and low-cost.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 can be significantly enhanced by forming heterostructure with large bandgap semiconductor.Such g-C3N4-based heterostructures include semiconductor-supported,carbon material-supported,non-metal-supported and metal-organic frameworks-supported,which show great potential in CO2 photoconversion.However,modified g-C3N4-based heterostructures still face challenges and require innovation on research and design.So,this review emphasizes the importance of g-C3N4-based heterostructures in environmentally friendly and sustainable approach to CO2 reduction.
关键词
g-C3N4/光还原CO2/异质结/半导体材料/金属有机框架Key words
g-C3N4/photoreduction of CO2/heterojunction/semiconductor materials/metal-organic frameworks引用本文复制引用
出版年
2025
国家科技期刊平台
NSTL
万方数据