钒-氮共掺杂TiO_2/凹凸棒复合光催化材料表征及光催化性能研究  

Characterization and degradation property of vanadium-nitrogen co-doped TiO_2/attapulgite photocatalytic composite material

作　　者：刘刚[1] 安兴才[1] 韩立娟[1] 陈作雁[1] 

机构地区：[1]甘肃省科学院自然能源研究所,兰州730046

出　　处：《化工新型材料》2014年第4期110-112,共3页New Chemical Materials

基　　金：甘肃省科学院青年科技创新基金项目(2013QN-17)

摘　　要：用溶胶-凝胶法制备了钒-氮共掺杂TiO2/凹凸棒复合光催化材料,采用TEM、XRD、BET及UV-Vis漫反射吸收光谱对其性能进行了表征。在模拟太阳光条件下,以亚甲基蓝溶液为目标降解物,对复合光催化材料光催化性能进行评价,复合光催化材料投入到亚甲基蓝溶液中饱和吸附,在40mg/L的亚甲基蓝溶液中,复合光催化材料投加量为1g/L,在800W氙灯下反应6h后,对亚甲基蓝的降解率为84%;重复反应4次,光催化降解变化不大;静置40min后,完成沉降,实现回收。Vanadium-nitrogen doped TiO2/Attapulgite photocatalytic composite material were synthesized by sol-gel method,its properties were characterized by using TEM, XRD,BET and UVVis diffuse reflection spectrum. On the condi- tion of simulative sunlight,photocatalytic properties of the material were evaluated by using methylene blue as evaluation standards. Research showed that putting the material into methylene blue for saturation adsorption, when the material dos- age reach 2g/L in 40mg/L methylene blue liquor,afrer 6 hours＇ reaction under 800W xenon lamp, the degradation rate of photocatalytic composite materials to methyleneblue attains 97.9%; Repeating the reaction 4 times, photocatalytic degrada- tion change little; After 40minuters＇ standing,the sedimentation was finished,and recycling was realized.

关 键 词：钒-氮共掺杂TiO2 凹凸棒 光催化性能 性能表征 

分 类 号：O643.36[理学—物理化学]