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材料工程  2018, Vol. 46 Issue (5): 145-150    DOI: 10.11868/j.issn.1001-4381.2016.001542
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
环境协调型Ce-La/TiO2复合材料的制备及光-湿-热性能
宗志芳1, 杨麟2, 张浩1,3, 熊磊2
1. 安徽工业大学 建筑工程学院, 安徽 马鞍山 243032;
2. 广州特种承压设备检测研究院, 广州 510050;
3. 安徽工业大学 冶金减排与资源综合利用教育部重点 实验室, 安徽 马鞍山 243032
Preparation of Environment Coordination Ce-La/TiO2 Composites and Photocatalytic-moisture-heat Properties
ZONG Zhi-fang1, YANG Lin2, ZHANG Hao1,3, XIONG Lei2
1. School of Civil Engineering and Architecture, Anhui University of Technology, Maanshan 243032, Anhui, China;
2. Guangzhou Special Pressure Equipment Inspection and Research Institute, Guangzhou 510050, China;
3. Key Laboratory of Metallurgical Emission Reduction & Resources Recycling (Ministry of Education), Anhui University of Technology, Maanshan 243032, Anhui, China
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摘要 采用均匀设计和多元非线性回归方程研究Ce-La掺量(Ce-La与钛酸丁酯的摩尔比)、Ce与La摩尔比、煅烧温度和硅酸四乙酯用量(硅酸四乙酯与钛酸丁酯的体积比)对Ce-La/TiO2空心微球的吸放湿性能和光催化性能的影响,以确定优化Ce-La/TiO2空心微球制备参数。将癸酸-棕榈酸采用真空吸附法压入优化Ce-La/TiO2空心微球的空腔中,制备环境协调型Ce-La/TiO2复合材料,分析Ce-La/TiO2复合材料的光-湿-热性能,利用扫描电镜(SEM)与激光粒度仪(LPSA)表征微观形貌与粒径分布。结果表明:4个因素均对Ce-La/TiO2空心微球的吸放湿性能和光催化性能有影响,其影响显著性为:Ce-La掺量 > 硅酸四乙酯用量 > Ce与La物质的量比 > 煅烧温度;优化制备工艺参数为Ce-La掺量为0.76%、Ce与La物质的量比为1.0、煅烧温度为646℃、硅酸四乙酯用量为0.63;Ce-La/TiO2复合材料具有优良的吸放湿性能、光催化性能和相变调温性能,即在相对湿度43.16%~75.29%间的湿容量为0.0576g/g,经过5h的甲醛降解效率为56.37%,从30~15℃降温所需要的时间近500s,具有明显且持续的相变平台。
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宗志芳
杨麟
张浩
熊磊
关键词 Ce-La/TiO2环境协调吸放湿性能光催化性能相变调温性能    
Abstract:The uniform experiment design and multivariate nonlinear regression equation were adopted to study the effect of Ce-La dosage (the mole ratio of Ce-La to tetrabutyl titanate), the mole ratio of Ce to La, calcination temperature, and amount of tetraethyl orthosilicate (the volume ratio of tetraethyl orthosilicate to tetrabutyl titanate) on the moisture absorption-desorption and photocatalytic properties of Ce-La/TiO2 hollow microspheres, so as to ensure the optimal preparation parameters of Ce-La/TiO2 hollow microspheres. Then, the decanoic-palmitic acid were pressed into the cavity of the optimal Ce-La/TiO2 hollow microspheres by vacuum absorption to prepare environment coordination Ce-La/TiO2 composite materials and analyze the photocatalytic-mositure-heat properties. The scanning electron microscopy and laser particle size analyzer were used to characterize the microscopic morphology and particle size distribution. The results show that the four factors all have effect on the moisture absorption-desorption and photocatalytic properties of Ce-La/TiO2 hollow microspheres, primary and secondary sequence of each factor is Ce-La dosage > amount of tetraethyl orthosilicate > the mole ratio of Ce to La > calcination temperature. The optimization program is Ce-La dosage 0.76%, the mole ratio of Ce to La is 1.0, calcination temperature 646℃, and amount of tetraethyl orthosilicate 0.63. The Ce-La/TiO2 composites have good moisture absorption-desorption, photocatalytic and phase changing temperature-adjusting properties. Under 43.16%-75.29% relative humidity, the equilibrium humidity content reaches 0.0576g/g,the degradation rate to formaldehyde reaches 56.37% after 5h, the cooling time lasting nearly 500s during 30-15℃, so the Ce-La/TiO2 composites have remarkable and sustainable phase changing platform.
Key wordsCe-La/TiO2    environment coordination    moisture absorption-desorption property    photocatalytic property    phase changing temperature-adjusting
收稿日期: 2016-12-13      出版日期: 2018-05-16
中图分类号:  TU322  
通讯作者: 宗志芳(1983-),女,讲师,博士,现从事环保型建筑节能材料研究,联系地址:安徽省马鞍山市安徽工业大学(243032),E-mail:zhifangzong@126.com     E-mail: zhifangzong@126.com
引用本文:   
宗志芳, 杨麟, 张浩, 熊磊. 环境协调型Ce-La/TiO2复合材料的制备及光-湿-热性能[J]. 材料工程, 2018, 46(5): 145-150.
ZONG Zhi-fang, YANG Lin, ZHANG Hao, XIONG Lei. Preparation of Environment Coordination Ce-La/TiO2 Composites and Photocatalytic-moisture-heat Properties. Journal of Materials Engineering, 2018, 46(5): 145-150.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.001542      或      http://jme.biam.ac.cn/CN/Y2018/V46/I5/145
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