环境工程学报2013，Vol.7Issue(7)：2648-2654,7.
纳米片自组装原位N掺杂(BiO)2CO3分级微球的可控合成及其优异可见光催化性能
Controlled synthesis and excellent visible light photocatalytic performance of in situ N-doped (BiO) 2 CO3 hierarchical microspheres self-assembled by nanosheets
摘要
Abstract
In situ N-doped (BiO)2CO3 hierarchical microspheres were fabricated by a one-pot hydrothermal method using dicyandiamide and bismuth citrate as raw materials.The as-prepared samples were characterized by XRD,SEM,FT-IR,UV-vis DRS and PL.The results indicated that the addition of dicyandiamide has significant impact on morphological structure,band gap and electronic-hole recombination rate of the as-prepared (BiO) 2CO3.During the hydrothermal process,bismuth citrate were hydrolyzed by dicyandiamide,and N atoms were in situ doped into the (BiO)2CO3lattice.N doping made the light response spectra of (BiO)2CO3 extend into visible light region significantly.The band gap narrowing of (BiO)2CO3 due to N doping was evidenced by valence band XPS.The in situ N-doped (BiO)2CO3 hierarchical microspheres structure showed excellent visible light photocatalytic activity toward aqueous Rh B and gas-phase NO degradation,which was higher than N-doped TiO2 and C-doped TiO2.The present investigation has significant implication on extending the effect of N doping into non-TiO2 system.关键词
水热法/(BiO)2CO3/原位N掺杂/光催化/可见光Key words
hydrothermal/ bismuth subcarbonate/ in situ N doping/ photocatalysis/ visible light分类
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董帆,刘海涛,傅敏,张海东,蒋彦可,边际,吴忠标..纳米片自组装原位N掺杂(BiO)2CO3分级微球的可控合成及其优异可见光催化性能[J].环境工程学报,2013,7(7):2648-2654,7.基金项目
国家自然科学基金资助项目(51108487) （51108487）
国家高新技术发展计划项目(2010AA064905) （2010AA064905）
重庆市高等学校青年骨干教师计划项目(渝人教[2011]65号) （渝人教[2011]65号）
重庆市自然科学基金资助项目(cstc2012jjA20014) （cstc2012jjA20014）
重庆市教委科技项目(KJ120701,KJZH11214) （KJ120701,KJZH11214）
重庆市创新团队项目(KJTD201020) （KJTD201020）
重庆工商大学环境科学与工程学科发展重大项目(1252001) （1252001）
