异质结
光催化
催化作用
兴奋剂
量子效率
多孔性
材料科学
吸附
制氢
氢键
氢
化学工程
纳米技术
光电子学
物理化学
化学
复合材料
有机化学
分子
工程类
作者
Tianyu Wang,Xuanlin Pan,Minyi He,Lei Kang,Wangjing Ma
标识
DOI:10.1002/advs.202403771
摘要
Abstract The rational design of visible‐light‐responsive catalysts is crucial for converting solar energy into hydrogen energy to promote sustainable energy development. In this work, a C─S─C bond is introduced into g‐C 3 N 4 (CN) through S doping. With the help of the flexible C─S─C bond under specific stimuli, a hollow coral‐like porous structure of S‐doped g‐C 3 N 4 (S‐CN) is synthesized for the first time. And an S‐doped g‐C 3 N 4 /ZnIn 2 S 4 (S‐CN/ZIS) heterojunction catalyst is in situ synthesized based on S‐CN. S 0.5 ‐CN/ZIS exhibits excellent photocatalytic hydrogen evolution (PHE) efficiency (19.25 mmol g −1 h −1 ), which is 2.7 times higher than that of the g‐C 3 N 4 /ZnIn 2 S 4 (CN/ZIS) catalyst (8.46 mmol g −1 h −1 ), with a high surface quantum efficiency (AQE) of 34.43% at 420 nm. Experiments and theoretical calculations demonstrate that the excellent photocatalytic performance is attributed to the larger specific surface area and porosity, enhanced interfacial electric field (IEF) effect, and appropriate hydrogen adsorption Gibbs free energy (ΔG H* ). The synergistic effect of S doping and S‐scheme heterojunction contributes to the above advancement. This study provides new insights and theoretical basis for the design of CN‐based photocatalysts.
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