摘要
采用溶胶-凝胶法合成In掺杂TiO_2纳米材料,用XRD、FT-IR以及N_2吸附-脱附等手段对其表征,研究了热处理条件对其结构和光催化性能的影响。结果表明,在不同煅烧温度制备的材料均由锐钛矿型TiO_2组成,且其表面形貌变化不大;随着煅烧温度的提高TiO_2晶粒尺寸逐渐增大,催化剂的比表面积逐渐降低,孔径逐渐增大,在400℃煅烧制得的3%In-TiO_2的比表面积为94.4 m^2/g,平均孔径为10.3 nm,具有最强的光催化能力,经光照30 min后对甲基橙的光催化降解率为43.1%.
3%In doped TiO2nano-material was prepared by sol-gel method, and powder X-ray diffraction （XRD）, scanning electron microscope （SEM）, FT-IR, and N2 adsorption-desorption were em- ployed to characterize the material calcined at different temperature. Photocatalytic degradation of methyl orange under UV-light irradiation on the materials was also examined. The results show that all the sam- ples present anatase TiO2 phase, and no apparent impact on surface morphology of the samples was observed. With increasing calcination temperature, TiO2 crystallite size and average pore size increased gradually, while the special surface area decreased. The special surface area and average pore size are 94.4 m^2/g and 10.3 nm for the 3%ln-TiO2 sample calcinated at 400℃. Meanwhile, the sample also have the optimal photocatalytic degradation activity, and methyl orange degradation rate is 43.1% after 30 min of UV-light irradiation.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2012年第6期561-566,共6页
Chinese Journal of Materials Research
基金
国家自然科学基金41271251
辽宁省科学技术计划2010229002资助项目~~
关键词
无机非金属材料
热处理
In-TiO2
光催化
甲基橙
inorganic non-metallic materials, thermal treatment, In-TiO2, photocatalysis, methylorange
