化学工程2026，Vol.54Issue(3)：20-26,7.DOI:10.3969/j.issn.1005-9954.2026.03.004
Fe-S共掺杂g-C3N4/TiO2异质结的构建及光催化性能
Construction and photocatalytic performance of Fe-S co-doped g-C3N4/TiO2 heterojunction
摘要
Abstract
In order to enhance the photocatalytic efficiency of TiO2 under visible light conditions,iron-sulfur co-doped graphitic phase carbon nitride Fe/SCN was prepared from thiourea and iron nitrate Fe(NO3)3·9H2O by roasting,and the heterojunction composite photocatalysts,Ti-Fe/SCN,were further constructed by roasting with Fe/SCN and TiO2.The photocatalytic performance was investigated by using XRD,SEM,XPS,UV-Vis DRS,PL,BET and EIS to characterize the prepared photocatalysts,and the photocatalytic performance was evaluated by the photocatalytic degradation rate of NO under visible light conditions,and the mechanism of its photocatalytic degradation of NO was explored by free radical trapping experiments.The results show that the degradation performance of Ti-Fe/SCN is better than that of TiO2,and Ti-Fe/SCN-4 shows the best degradation performance.Under visible light,the degradation rate is 30.93%,which is attributed to the existence of a Z-type heterojunction between Fe/SCN and TiO2,effectively reducing the photogenerated carrier complexes and improving the photocatalytic activity of the composites.The degradation rate of the composites decrease by only 3.6%after five cycles.From the radical trapping experiments,the·OH and·O2-play a major role in the reaction system.关键词
二氧化钛/共掺杂改性/Z型异质结/降解NOKey words
TiO2/co-doping modification/Z-type heterojunction/degrading NO分类
化学化工引用本文复制引用
丁驰,高莉宁,李立,张佩,张家豪,何锐..Fe-S共掺杂g-C3N4/TiO2异质结的构建及光催化性能[J].化学工程,2026,54(3):20-26,7.基金项目
陕西省重点研发计划项目(2023-YBGY-495) （2023-YBGY-495）
陕西省交通科研项目(23-22K) （23-22K）
长安大学中央高校基本科研业务费专项资金资助(300102312402) （300102312402）
