材料科学
光催化
异质结
氮化碳
离子
二乙烯三胺
碳纤维
化学工程
接口(物质)
化学键
氮化物
无机化学
纳米技术
光电子学
图层(电子)
复合材料
催化作用
有机化学
工程类
化学
复合数
毛细管作用
毛细管数
作者
Houwei He,Zhongliao Wang,Jinfeng Zhang,Chunfeng Shao,Kai Dai,Ke Fan
标识
DOI:10.1002/adfm.202315426
摘要
Abstract Photosynthesis of hydrogen peroxide (H 2 O 2 ) is regarded as an economically efficient and environmentally friendly synthesis method. However, the scalability of photocatalytic H 2 O 2 production (PHP) is hindered by the sluggish reaction kinetics and rapid recombination of photogenerated charge carriers. In this study, an organic amine‐constrained ions intercalated carbon nitride/CdSe‐diethylenetriamine (K + /I − ‐CN/CdSe‐D) S‐scheme heterojunction is synthesized using an organic–inorganic hybrid approach and employed for PHP for the first time. The optimization of the heterojunction interface by I − and K + ions contributed to enhanced light absorption capabilities and reduced interlayer charge transfer distance. Concurrently, the synergy of C─Se bonds at interface effectively modulated the electron transfer pathways. The coordination environment and charge transfer mechanism are thoroughly investigated by extended X‐ray absorption fine structure and in situ irradiated X‐ray photoelectron spectroscopy. The H 2 O 2 production rate of 40%K + /I − ‐CN/CdSe‐D reached 2240.23 µmol h −1 g −1 in pure water. This study highlights the significance of dual tuning of interface chemical bonds and ionic intercalation as an effective strategy for enhancing the photocatalytic H 2 O 2 , paving the way for further advancements in PHP technology.
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