摘要
采用化学还原法将非贵金属钴纳米颗粒沉积到氮化碳纳米管(C3N4 NTs)内外管壁,制备了Co/C3N4 NTs复合光催化剂。使用多种分析表征手段对Co/C3N4 NTs的形貌和结构进行分析,并比较Co负载量对复合材料可见光光催化产氢性能的影响。结果表明,该金属-半导体异质结可有效增强光生电子-空穴的分离速率。经可见光照射2 h后,当Co负载量为质量分数5%时具有最佳产氢量,且产氢速率为纯C3N4 NTs的1.7倍。
The low-cost cobalt nanoparticles were deposited on the channels of carbon nitride nanotubes(C3N4 NTs)by a chemical reduction process.The morphology and structures of the synthesized Co/C3N4 NTs nanocomposite were analyzed by comprehensive characterization methods.The effects of Co loading content on the visible-light-induced photocatalytic hydrogen production rate were studied.Our results show that this metal-semiconductor heterojunction effectively enhances the separation of photogenerated electron-holes.After 2 h of visible light irradiation,the optimal hydrogen production was obtained when the Co loading was 5%(w/w),and the hydrogen production rate was 1.7 times that of pure C3N4 NTs.
作者
朱玉香
许史杰
杨静
刘建
ZHU Yu-Xiang;XU Shi-Jie;YANG Jing;LIU Jian(College of Chemical Engineering,Nanjing Forestry University,Jiangsu Key Lab of Biomass-based Green Fuels and Chemicals,Nanjing 210037,China;School of Chemical Engineering and Technology,State Key Laboratory of Chemical Engineering,Tianjin University,Tianjin 300072,China)
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2019年第12期2331-2336,共6页
Chinese Journal of Inorganic Chemistry
关键词
光催化
钴
氮化碳纳米管
可见光
photocatalysis
cobalt
carbon nanotubes
visible light
