【摘要】 文章采用水热法两步制备了Cu₂O/Eu₂O₃-TiO₂复合光催化剂,利用X射线衍射仪（XRD）、透射电镜（TEM）、紫外可见漫反射仪（UV-vis DRS）和X射线光电子能谱仪（XPS）对所制得的光催化剂进行了分析和表征。表征结果表明:在复合光催化剂中TiO₂呈不规划的薄片状,Cu₂O和Eu₂O₃不均匀分散在薄片上;以乙酸为牺牲剂,考察不同Cu₂O/Eu₂O₃-TiO₂复合光催化剂的光催化产生氢气和烷烃的性能,实验结果表明:光催化的气体产物中氢气和烷烃比例随催化剂种类的改变而改变;20.7%Cu₂O/6%Eu₂O₃-TiO₂复合光催化剂产氢气和烷烃的性能最佳;20.7%Cu₂O/6%Eu₂O₃-TiO₂光催化乙酸的特征气体产物是氢气、甲烷、乙烷。更多还原

【Abstract】 Cu₂O/Eu₂O₃-TiO₂ composites are synthesized through a two-steps hydrothermal method. The crystal structure and morphology of the as-prepared product were characterized using X-ray diffraction（XRD）, UV-vis diffuse reflectance spectroscopy（UV-vis DRS） and transmission electron microscopy（TEM） and X-ray photoelectron spectroscopy（XPS）. In Cu₂O/Eu₂O₃-TiO₂ composite, TiO₂ is of lamellar structure, unevenly dispersed by Cu₂O and Eu₂O₃ nanoparticles. Using acetic acid as sacrificial agent, the photocatalytic activity for production of hydrogen and alkanes over different Cu₂O/Eu₂O₃-TiO₂ composites have been investigated. The experimental results show that the distributions of hydrogen and alkanes in gaseous products depend on kinds of photocatalysts. 20.7% Cu₂O/6% Eu₂O₃-TiO₂ photocatalyst exhibits the best performance for photocatalytic production of hydrogen and alkanes. The characteristic gaseous products of photocatalytic degradation of acetic acid over 20.7% Cu₂O/6% Eu₂O₃-TiO₂ composites are hydrogen gas, methane and ethane.更多还原