基于光催化性能的Cu-Ce/TiO_2湿性能
Cu-Ce/TiO_2Moisture Performance Based on Photocatalytic Performance
查看参考文献17篇
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文摘
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以Cu(NO_3)_2 ·3H_2O和Ce(NO_3)_3 ·6H_2O为改性剂,采用溶胶-凝胶法制备Cu-Ce/TiO_2。探讨Cu-Ce负载量、 Cu与Ce摩尔比和煅烧温度对Cu-Ce/TiO_2性能的影响。利用SEM,LPSA,BET和UV-Vis测试Cu-Ce/TiO_2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500℃时,制备的Cu-Ce/TiO_2具有良好的光催化性能与湿性能。Cu-Ce/TiO_2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d_(50)为2437.57nm。Cu-Ce/TiO_2具有狭小瓶颈的“墨水瓶”型孔结构,其比表面积为105.55m~2/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/TiO_2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。 |
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其他语种文摘
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Cu(NO_3)_2·3H_2O and Ce(NO_3)_3·6H_2O were used as modifier to make Cu-Ce/TiO_2by solgel method.The influences of Cu-Ce loading capacity,Cu and Ce molar ratio,sintering temperature on Cu-Ce/TiO_2performance were explored.Then,surface morphology,particle size distribution, pore structure and optical property of Cu-Ce/TiO_2 were characterized by SEM,LPSA,BET and UVVis, respectively.The results show that:prepared Cu-Ce/TiO_2shows good photocatalytic-moisture performance when Cu-Ce loading capacity is 3%,Cu and Ce molar ratio is 1∶1and sintering temperature is at 500℃.Cu-Ce/TiO_2presents approximate sphere,with better uniformity and dispersibility and the particle size distribution is 1202.98-5364.48nm,with d_(50)2437.57nm.Cu-Ce/TiO_2has pore structure,approximate to an “ink bottle”with a narrow bottleneck,with the specific surface area 105.55m~2/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/fiO_2so 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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来源
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材料工程
,2018,46(1):114-118 【核心库】
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DOI
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10.11868/j.issn.1001-4381.2016.001100
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关键词
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Cu-Ce掺杂
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光-湿性能
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TiO_2
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湿性能
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光催化性能
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地址
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安徽工业大学建筑工程学院, 安徽, 马鞍山, 243032
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1001-4381 |
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学科
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环境污染及其防治 |
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基金
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国家自然科学基金青年基金资助项目
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高等学校优秀青年人才基金项目
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文献收藏号
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CSCD:6162172
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