Influence of Temperature on the Photocatalytic Activity of Sol-Gel TiO2 Films

被引：28
作者：
Costacurta, Stefano [3 ]
Dal Masco, Gabriele [2 ,3 ]
Gallo, Riccardo [2 ,3 ]
Guglielmi, Massimo [2 ]
Brusatin, Giovanna [2 ]
Falcaro, Paolo [1 ]
机构：
[1] CSIRO Mat Sci & Engn, Clayton, Vic 3168, Australia
[2] Univ Padua, Dipartimento Ingn Meccan Settore Mat, I-35131 Padua, Italy
[3] Assoc CIVEN, I-30175 Venice, Italy
来源：
ACS APPLIED MATERIALS & INTERFACES | 2010年 / 2卷 / 05期
关键词：
photocatalysis; titanium dioxide; stearic acid; block copolymer; Pluronic F127; Fourier transform infrared spectroscopy; AQUEOUS-SOLUTIONS; OXIDATION; TITANIA; PHOTODEGRADATION; PHOTOOXIDATION; SPECTROSCOPY; DEGRADATION; SURFACTANTS; COPOLYMERS; ETHYLENE;
D O I：
10.1021/am100149e
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The photocatalytic activity of TiO2 films synthesized via the sol gel process has been measured as a function of UV irradiation time and substrate temperature. Fourier-transform infrared spectroscopy has been used to address the chemical changes in stearic acid and block copolymer Pluronic F127 films deposited on the photocatalytic surface. When the temperature of the photocatalytic substrate was raised above 50 degrees C, the removal of stearic acid from the surface was strongly affected by a process involving evaporation, whereas Pluronic F127 revealed a superior stability. Our study shows that heat enhances the photocatalytic activity, suggesting the importance of an accurate temperature control in photocatalytic efficiency measurements.
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收藏
页码：1294 / 1298
页数：5
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