以Cu(NO3)2·3H2O和Ce(NO3)3·6H2O为改性剂,采用溶胶-凝胶法制备Cu-Ce/TiO2.探讨Cu-Ce负载量、Cu与Ce摩尔比和煅烧温度对Cu-Ce/TiO2性能的影响.利用SEM,LPSA,BET和UV-Vis测试Cu-Ce/TiO2的表面形貌、粒度分布、孔结构和光学性能.结果表明:Cu-Ce负载量3％、Cu与Ce摩尔比1:1、煅烧温度5O0℃时,制备的Cu-Ce/TiO2具有良好的光催化性能与湿性能.Cu-Ce/TiO2呈近似球体,具有较好的均匀化和分散性,其粒径分布为1202.98～5364.48nm,其中d50为2437.57nm.Cu-Ce/TiO2具有狭小瓶颈的“墨水瓶”型孔结构,其比表面积为105.55m2/g,孔体积为0.1200～0.1246mL/g,平均孔直径为3.44～4.02nm.Cu-Ce掺杂促使Cu-Ce/TiO2内部形成新的能级,提高捕获e-和h+的能力,增强光子的利用效率,促使吸收边带发生红移.%Cu(NO3)2 · 3H2O and Ce(NO3)3 · 6H2O were used as modifier to make Cu-Ce/TiO2 by solgel method.The influences of Cu-Ce loading capacity,Cu and Ce molar ratio,sintering temperature on Cu-Ce/TiO2 performance were explored.Then,surface morphology,particle size distribution,pore structure and optical property of Cu-Ce/TiO2 were characterized by SEM,LPSA,BET and UV-Vis,respectively.The results show that:prepared Cu-Ce/TiO2 shows good photocatalytic-moisture performance when Cu-Ce loading capacity is 3 ％,Cu and Ce molar ratio is 1:1 and sintering temperature is at 500℃.Cu-Ce/TiO2 presents approximate sphere,with better uniformity and dispersibility and the particle size distribution is 1202.98-5364.48nm,with d50 2437.57nm.Cu-Ce/TiO2 has pore structure,approximate to an "ink bottle" with a narrow bottleneck,with the specific surface area 105.55m2/g,hole size 0.1200-0.1246mL/g,and average pore diameter 3.44-4.02nm.Cu-Ce doping promotes to form a new energy level inside Cu-Ce/fiO2 so as to improve the ability to capture e and h+,enhance the efficiency of photon utilization,and promote red shift of absorption sideband.
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