摘要
以微晶白云母为载体,钛酸丁酯为钛源,采用溶胶-凝胶法合成制备微晶白云母负载纳米TiO2光催化剂,然后用X射线衍射,扫描电镜等对微晶白云母负载TiO2光催化剂进行表征。再以微晶白云母负载纳米TiO2光催化剂对亚甲基蓝进行了光催化降解研究,特别针对有无紫外光照射条件下微晶白云母、纳米TiO2、微晶白云母/纳米TiO2等在亚甲基蓝溶液中的行为进行研究,结果表明:所制备的微晶白云母负载TiO2光催化剂对亚甲基蓝具有较好的光催化降解能力,1250目微晶白云母负载TiO2在紫外光照射下光催化反应4h,其降解率可达99%以上。
TiO2 loaded micro-crystal muscovite composite photocatalyst was prepared by sol gel process using micro-crystal muscovite as the supporter and tetranbutyl titanate as the titanic source. The material was characterized by X-ray diffraction and Scanning Electronic Microscope. The influence of UV light on Methylene Blue and the role of micro crystal muscovite, nano-TiO2 powders and TiO2 loaded micro-crystal muscovite in the Methylene Blue solution were investigated. The micro-crystal muscovite has an excellent ability of absorption and the nano TiO2 powders have better photocatalytic activity for decomposition of Methylene Blue. The TiO2 loaded micro crystal muscovite photocatalyst has an excellent photocatalytic activity for degradation of the Methylene Blue and the degradation rate of the 100 ml Methylene Blue solution with 5 mg/L concentration is about 100% under UV irradiation for 4h at room temperature used nano TiO2/MCM （micro-crystal muscovite） as photocatalyst.
出处
《矿物岩石》
EI
CAS
CSCD
北大核心
2008年第4期13-16,共4页
Mineralogy and Petrology
基金
四川省重点科技攻关项目(编号:04GG009-020-01)
关键词
微晶白云母
纳米TIO2
光催化降解
亚甲基蓝
micro-crystal muscovite
nano TiO2 particles
photocatalytic degradation
MethyleneBlue
