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Graphitic Carbon Nitride‐Based Low‐Dimensional Heterostructures for Photocatalytic Applications
Solar RRL ( IF 6.0 ) Pub Date : 2019-12-03 , DOI: 10.1002/solr.201900435 Muhammad Shuaib Khan 1 , Fengkai Zhang 2, 3 , Minoru Osada 4 , Samuel S. Mao 2 , Shaohua Shen 1
Solar RRL ( IF 6.0 ) Pub Date : 2019-12-03 , DOI: 10.1002/solr.201900435 Muhammad Shuaib Khan 1 , Fengkai Zhang 2, 3 , Minoru Osada 4 , Samuel S. Mao 2 , Shaohua Shen 1
Affiliation
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Low‐dimensional materials and heterostructure photocatalysts are distinct research topics in artificial photocatalysis. The rational design of photocatalysts considering both aspects has established significant importance due to the fascinating advantages of superior charge carrier transport/transfer and photocatalytic performances. Graphitic carbon nitride (g‐C3N4), a captivating metal‐free and visible light‐active photocatalyst, has drawn interdisciplinary attention in the field of solar energy conversion and pollutant degradation because of its appropriate electronic band structure, excellent physicochemical stability, facile synthesis, and unique layered structure. The g‐C3N4‐based low‐dimensional heterostructures demonstrate various mechanisms for photogenerated charge carrier transfer including type I heterojunction, type II heterojunction, p–n heterojunction, Z‐scheme heterojunction, Schottky junction, and surface plasmon resonance (SPR) effect. Herein, the state‐of‐the‐art g‐C3N4‐based low‐dimensional heterostructure photocatalysts are analyzed to provide an insightful outlook with respect to doping and defect engineering, band structures tuning, and charged carrier dynamics to realize enhanced visible light absorption, improved photoinduced charge carrier transport/transfer, and spatially separated electron–hole pairs for improved photocatalytic performances. Furthermore, the potential application of g‐C3N4‐based low‐dimensional heterostructures for water splitting, CO2 reduction, and pollutant degradation is also presented. Finally, conclusion and invigorating perspective about challenges and opportunities for advanced design of g‐C3N4‐based low‐dimensional heterostructures are briefed.
中文翻译：
用于光催化应用的基于石墨氮化碳的低维异质结构
低维材料和异质结构光催化剂是人工光催化中不同的研究主题。考虑到这两个方面的光催化剂的合理设计由于卓越的电荷载流子传输/转移和光催化性能的引人入胜的优点而确立了重要的地位。石墨状氮化碳（g‐C 3 N 4）是一种迷人的无金属和可见光活性光催化剂，由于其合适的电子能带结构，出色的理化稳定性，合成简便，独特的分层结构。g‐C 3 N 4基于低维的异质结构展示了光生载流子转移的各种机制，包括I型异质结，II型异质结，PN异质结，Z型异质结，肖特基结和表面等离振子共振（SPR）效应。本文对最新的基于gC 3 N 4的低维异质结构光催化剂进行了分析，以提供有关掺杂和缺陷工程，能带结构调整和带电载流子动力学以实现增强的可见光的深刻见解。光吸收，改进的光诱导电荷载流子传输/转移以及在空间上分开的电子-空穴对，以提高光催化性能。此外，g‐C 3 N 4的潜在应用还介绍了用于水分解，CO 2减少和污染物降解的基于低维的异质结构。最后，简要介绍了基于g‐C 3 N 4的低维异质结构的高级设计所面临的挑战和机遇的结论和令人振奋的观点。
更新日期：2019-12-03
中文翻译：
用于光催化应用的基于石墨氮化碳的低维异质结构
低维材料和异质结构光催化剂是人工光催化中不同的研究主题。考虑到这两个方面的光催化剂的合理设计由于卓越的电荷载流子传输/转移和光催化性能的引人入胜的优点而确立了重要的地位。石墨状氮化碳（g‐C 3 N 4）是一种迷人的无金属和可见光活性光催化剂，由于其合适的电子能带结构，出色的理化稳定性，合成简便，独特的分层结构。g‐C 3 N 4基于低维的异质结构展示了光生载流子转移的各种机制，包括I型异质结，II型异质结，PN异质结，Z型异质结，肖特基结和表面等离振子共振（SPR）效应。本文对最新的基于gC 3 N 4的低维异质结构光催化剂进行了分析，以提供有关掺杂和缺陷工程，能带结构调整和带电载流子动力学以实现增强的可见光的深刻见解。光吸收，改进的光诱导电荷载流子传输/转移以及在空间上分开的电子-空穴对，以提高光催化性能。此外，g‐C 3 N 4的潜在应用还介绍了用于水分解，CO 2减少和污染物降解的基于低维的异质结构。最后，简要介绍了基于g‐C 3 N 4的低维异质结构的高级设计所面临的挑战和机遇的结论和令人振奋的观点。
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