化工新型材料

化工新型材料 ›› 2017, Vol. 45 ›› Issue (9) : 95-98.

新材料与新技术

基于光-湿性能的Cu-Ce/TiO₂复合材料制备与表征

杨小妮,田养利,张红

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Preparation and characterization of Cu-Ce/TiO₂ composite bsed on photocatalytic-mositure performance

Yang Xiaoni, Tian Yangli, Zhang Hong

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Received		Published
2017-03-30		2017-10-19
Issue Date	Revised Date
2017-10-19	2017-03-30

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摘要

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。利用XRD、LPSA、SEM、BET、UV-Vis和DVS对Cu-Ce/TiO₂的物质组成、粒度分布、微观形貌、孔结构和光学性能进行表征。结果表明,Cu-Ce/TiO₂具有大量锐钛矿型TiO₂,促使其吸收边带呈现明显的拓展与红移。Cu-Ce/TiO₂呈现较为规则的球状且结构致密,其粒径较大且局部出现团聚。Cu-Ce/TiO₂的比表面积为107.06m²/g、孔体积为0.1268～0.1354mL/g、平均孔直径为4.29～5.47nm,具有良好的孔结构。Cu-Ce/TiO₂在4h的甲醛降解效率为50.9%,在相对湿度35%～75%的平衡含湿量为0.0143～0.1005g/g,具有良好的光催化性能与吸放湿性能。

Abstract

With Cu(NO₃)₂·3H₂O and Ce(NO₃)₃·6H₂O as modifiers,Cu-Ce/TiO₂ was prepared by sol-gel method.Composition,particle size distribution,microstructure,pore structure and optical property of Cu-Ce/TiO₂ were characterized by XRD,LPSA,SEM,BET,UV-Vis and DVS.Experimental results showed that Cu-Ce/TiO₂ contained a large number of anatase TiO₂,prompting obvious expansion and redshift of absorption sideband.Cu-Ce/TiO₂ presented more regular ball and dense structure,of which the size was larger and partial agglomeration came out.With good pore structure,Cu-Ce/TiO₂ had specific surface area of 107.06m²·g^-1,pore volume of 0.1268～0.1354mL·g^-1,and average pore diameter of 4.29～5.47nm.What's more,Cu-Ce/TiO₂ showed good photocatalytic performance and moisture performance,i.e.,formaldehyde degradation rate was 50.9% at 4 h and equilibrium moisture content was 0.0143～0.1005g·g^-1 from RH=35% to RH=75%.

关键词

Cu-Ce/TiO₂ / 光-湿性能 / 复合材料 / 光催化性能 / 吸放湿性能

Key words

Cu-Ce/TiO₂ / photocatalytic-moisture performance / composite / photocatalytic performance / moisture absorption performance

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基于光-湿性能的Cu-Ce/TiO₂复合材料制备与表征[J]. 化工新型材料, 2017, 45(9): 95-98 DOI:

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