物理化学学报2025，Vol.41Issue(12)：134-146,13.DOI:10.1016/j.actphy.2025.100168
基于分子水平调控的供体-π-受体型石墨相氮化碳光催化体系的制备及其高效生产H2O2
Preparation of donor-π-acceptor type graphitic carbon nitride photocatalytic systems via molecular level regulation for high-efficient H2O2 production
摘要
Abstract
Donor-π-Acceptor(D-π-A)conjugated polymers represent an emerging class of materials featuring alternating electron donor(D),π-bridge(π),and electron acceptor(A)units,which exhibit significant potential in enhancing visible-light absorption and optimizing charge separation and redistribution.To overcome the limitations of graphitic carbon nitride(g-C3N4)while capitalizing on the structural merits of D-π-A systems,a series of 4-aromatic amine derivatives modified g-C3N4 photocatalysts was designed and synthesized through precise molecular level regulation with tailored local electron delocalization.This strategy allows for a systematic investigation of the relationship between electron delocalization extent and photocatalytic H2O2 production.Furthermore,the electron-withdrawing induction effect for regulating electron delocalization results in a substantial enhancement of photoinduced electron transfer to surface reactive sites.The as-synthesized optimum photocatalyst exhibits a remarkable H2O2 production performance,which is 30.44 times higher than that of the pristine g-C3N4.The mechanism study reveals that the photocatalytic H2O2 production in D-π-A-type g-C3N4 proceeds primarily via a two-electron oxygen reduction reaction(ORR).关键词
光催化/g-C3N4/D-π-A结构/超分子自组装/H2O2生产Key words
Photocatalysis/g-C3N4/D-π-A structure/Supramolecular self-assembly/H2O2 production分类
化学化工引用本文复制引用
Jiayao Wang,Guixu Pan,Ning Wang,Shihan Wang,Yaolin Zhu,Yunfeng Li..基于分子水平调控的供体-π-受体型石墨相氮化碳光催化体系的制备及其高效生产H2O2[J].物理化学学报,2025,41(12):134-146,13.基金项目
This work is supported by the National Natural Science Foundation of China(22008185 （）
21872023),the Shaanxi Provincial Key Research and Development Program(2022GY-166,2024SF-YBXM-593),the Shaanxi Provincial Department of Education Youth Innovation Team Research Plan Project(24JP072),Scientific Research Program Funded by Shaanxi Provincial Education Department(23JC033),and the Xi'an Science and Technology Planning Project(24GXFW0021). 国家自然科学基金(22008185,21872023),陕西省重点研发计划(2022GY-166,2024SF-YBXM-593),陕西省教育厅青年创新团队研究计划项目(24JP072),陕西省教育厅科研计划项目(23JC033)及西安市科技计划项目(24GXFW0021)资助 （2022GY-166,2024SF-YBXM-593）
