中文摘要：

采用溶胶-凝胶法合成了B掺杂的TiO2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TiO2晶体的长大，对TiO2表面形貌没有显著的影响，B-Ti02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TiO2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TiO2光催化剂对甲基橙的降解效果最好。N2吸附-脱附结果表明，3％B—Ti02的BET比面积为127．84m^2／g，平均孔径为10．53nm。

英文摘要：

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.