摘要
采用溶胶-凝胶法合成了B掺杂的TiO_2光催化剂,并用XRD、SEM、XPS、FT-IR、BET等手段进行了表征。结果表明,掺杂B可抑制TiO_2晶体的长大,对TiO_2表面形貌没有显著的影响,B-TiO_2催化剂的比表面积随着B离子掺杂量的提高而增大;B离子主要进入晶格间隙并与TiO_2晶体形成固溶体,以B-O-Ti结构存在。B掺杂量(质量分数)为3%时,制备出的TiO_2光催化剂对甲基橙的降解效果最好。N_2吸附-脱附结果表明,3%B-TiO_2的BET比面积为127.84 m^2/g、平均孔径为10.53 nm。
B-doped TiO2 was prepared via sol-gel method, and was characterized using powder X-ray diffraction （XRD）, scanning electron microscope （SEM）, X-ray photoelectron spectrum （XPS）, FT- IR, and N2 adsorption （BET）. The results show that B doping inhibited growth of TiO2 crystal, and no apparent impact on surface morphology of Ti02 particles was observed. The doped boron mainly occupy the internal space of TiO2 crystalline structure, existing in the form of B-O-Ti structure. The samples doped with 3% （mass fraction） boron have the optimal performance of photocatalytic degradation of methyl orange. N2 adsorption isotherm showed that the BET surface area and average pore size of 3% B-TiO2 are 127.84 m^2/g and 10.53 nm, respectively.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2012年第2期149-154,共6页
Chinese Journal of Materials Research
基金
国家自然科学基金50774074
辽宁省科学技术计划2010229002资助项目~~
关键词
无机非金属材料
TIO2
B掺杂
光催化
甲基橙
inorganic non-metallic materials, TiO2, B-doped, photocatalysis, methyl orange
