摘要
采用溶胶-凝胶法制备了过渡金属Ni掺杂纳米TiO2光催化剂(Ni-TiO2),采用XRD、纳米粒度、UVVis和PL对其进行了表征和分析,并以亚甲基蓝(MB)作为目标降解物,研究了Ni掺杂量以及热处理温度对NiTiO2性能的影响。结果表明:当pH=2.5、n(Ni)∶n(Ti)=1%、热处理温度为500℃时制备的样品在普通日光灯下、5h内对MB的光催化降解率达到92.54%,明显优于Degussa P25在相同条件下的降解率(50.69%)。
Ni-doped TiO2 photocatalysts were synthesized by sol-gel method and characterized by XRD, size distribution, UV-Vis and PL instruments. Meanwhile, the degradation of methyl blue （MB） was investigated under fluorescent lamp to test the photocatalytic activity of the samples with different Ni-doped concentration and sintered at different temperature. The results show that when pH value is 2. 5, n（Ni） ： n（Ti）=1% and sintered temperature is 500 ℃, the degradation rate of MB have reached to 92. 54% at ordinary daylight lamp after 5 hours, which is higher than that of P25 （50. 69%） degraded in common condition.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2013年第16期43-46,62,共5页
Materials Reports
基金
国家自然科学基金(51062017
51262030)
