磷酸对TiO_2纳米粒子光催化剂的改性  

Phosphorous Acid Modified TiO_2 Nanoparticle Photocatalysts

作　　者：秦旭[1] 井立强[1] 薛连鹏[1] 栾云博[1] 付宏刚[1] 

机构地区：[1]黑龙江大学化学化工与材料学院物理化学实验室,哈尔滨150080

出　　处：《无机化学学报》2008年第7期1108-1112,共5页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.20501007);教育部新世纪优秀人才支持计划(No.NCET-070259);教育部科学技术研究重点项目(No.207027);黑龙江省杰出青年科学基金(No.JC200701);哈尔滨市科学基金(No.2005AFQXJ060)资助

摘　　要：通过浸渍过程实现了磷酸对溶胶水热法合成的锐钛矿相TiO2纳米粒子的改性。重点研究了磷酸修饰对纳米锐钛矿相TiO2的热稳定性及光催化活性的影响。结果表明,磷酸修饰显著地提高了纳米锐钛矿相TiO2热稳定性,甚至经过800℃热处理后仍然具有以锐钛矿相为主的相组成。在光催化降解罗丹明B(RhB)过程中经过700℃热处理的磷酸修饰的样品表现出了优于商品P25-TiO2的活性。TiO2 nanoparticles synthesized by a sol-hydrothermal process were modified with phosphorous acid by an impregnation method.The effects of phosphorous acid modification on the thermal stability and photocatalytic activity of anatase TiO2 were mainly investigated.The results show that the phosphorous acid modification obviously enhances the thermal stability of nanosized anatase TiO2,a principal anatase phase was maintained even after thermal treatment at 800 ℃.During the processes of photocatalytic degradation RhB,the as-prepared phosphorous acid modified TiO2 by thermal treatment at 700 ℃ exhibits higher activity than P25-TiO2.

关 键 词：TIO2 纳米粒子 磷酸改性 光催化 

分 类 号：O613.62[理学—无机化学] O614.412[理学—化学]