物理化学学报2024，Vol.40Issue(11)：51-52,2.DOI:10.3866/PKU.WHXB202406026
4-氨基-1H-咪唑-5-甲腈修饰供体-受体型氮化碳光催化剂的构建及其高效光催化产氢研究
Construction of 4-Amino-1H-imidazole-5-carbonitrile Modified Carbon Nitride-based Donor-Acceptor Photocatalyst for Efficient Photocatalytic Hydrogen Evolution
摘要
Abstract
Photocatalytic hydrogen generation through water splitting driven by solar energy is regarded as a highly promising strategy to tackle the challenges of the energy crisis and environmental contamination.Tuning the electronic properties and band structures of photocatalysts is critical to improving the efficiency of charge separation and the activity of hydrogen production.Herein,donor-acceptor modified polymeric carbon nitride(CN)-based copolymers are synthesized via the introduction of 4-amino-1H-imidazole-5-carbonitrile(AICN)into the molecular skeleton of CN.The incorporation of electron donor AICN units can broaden the π-conjugated system and promote the spatial charge separation in the catalysts,thus resulting in enhanced light utilization and improved intramolecular charge carrier transfer rate.As a consequence,the AICN modified CN samples exhibit an increased photocatalytic hydrogen evolution rate,and the optimal photocatalytic activity can reach 3204 μmol·h-1·g-1.This molecular engineering strategy provides an effective avenue to develop high-performance CN-based photocatalysts for hydrogen evolution.关键词
氮化碳/供体-受体/分子修饰/电荷转移/产氢Key words
Polymeric carbon nitride/Donor-acceptor/Molecular modification/Charge separation/Hydrogen production分类
化学化工引用本文复制引用
程敬招,高诗语,程蓓,杨凯,王往,曹少文..4-氨基-1H-咪唑-5-甲腈修饰供体-受体型氮化碳光催化剂的构建及其高效光催化产氢研究[J].物理化学学报,2024,40(11):51-52,2.基金项目
This work was financially supported by the National Key R&D Program of China(2022YFE0114800),the National Natural Science Foundation of China(22278324,52073223),and the Jiangxi Province"Double Thousand"Talent Training Plan(jxsq2023102141). 该工作得到国家重点研发计划项目(2022YFE0114800),国家自然科学基金项目(22278324,52073223),江西省"双千"人才培养计划项目(jxsq2023102141)的支持 （2022YFE0114800）
