摘要
以Fe3O4纳米颗粒为内核,SiO2惰性层为隔离层和钛酸四正丁酯为前驱体,钨酸铵、硝酸铵为掺杂源,采用低温溶胶法制备磁负载型的钨、氮共掺杂二氧化钛磁性光催化剂;通过XRD、SEM、DRS和IR等表征手段,对低温溶胶制备磁负载型的钨、氮共掺杂的二氧化钛磁性光催化剂的性质进行研究。结果表明:催化剂为锐钛矿晶型,球形纳米颗粒,禁带宽度降低了0.66eV。以氙灯模拟太阳光降解甲基橙,光照1h,催化剂降解率均达到90%以上。
Using Fe3O4 nanoparticles as the kernel,SiO2 inert layer as the isolation layer,tetra-n-butyl titanate as the precursor,ammonium tungstate and ammonium nitrate as doping sources,magnetic W,Ncodoped TiO2 photocatalyst was prepared by low-temperature sol method. The properties of the magnetic photocatalyst were investigated by XRD,SEM,DRS and IR. The results indicate that the magnetic W,N-codoped TiO2 photocatalyst is spherical anatase nanoparticle with forbidden band width decreased by0. 66 e V. Under irradiation of xenon lamp for the simulated degradation of methyl orange by sunlight,the degradation rate of methyl orange can exceed 90% with 1 h of irradiation in presence of the magnetic W,N-codoped TiO2 photocatalyst.
出处
《钢铁钒钛》
CAS
北大核心
2015年第5期20-24,共5页
Iron Steel Vanadium Titanium
基金
辽宁省教育厅项目(L2012143)
辽宁省高等学校创新团队(LT2013010)
关键词
TIO2
磁性光催化剂
低温溶胶法
共掺杂
隔离层
磁负载型
内核
TiO2
magnetic photocatalyst
low-temperature sol process
codope
isolated layer
magnetic loading
kernel
