Bandgap optimization of sol-gel-derived TiO2 and its effect on the photodegradation of formic acid

被引：22
|
作者：
Zouheir, Morad [1 ,3 ]
Assila, Ouissal [1 ]
Tanji, Karim [1 ]
El Gaidoumi, Abdelali [1 ,4 ]
Arana, Javier [2 ]
Dona Rodriguez, Jose Miguel [2 ]
Smatt, Jan-Henrik [3 ]
Huynh, Tan-Phat [3 ]
Kherbeche, Abdelhak [1 ]
机构：
[1] Univ Sidi Mohammed Ben Abdellah, Lab Mat Proc Catalyse & Environm, Route Imouzzer,BP 2427, Fes, Morocco
[2] Univ Las Palmas Gran Canaria, Photocatalysis & Electrochem Lab, Parque Cient & Tecnol, E-35017 Las Palmas Gran Canaria, Spain
[3] Abo Akad Univ, Lab Mol Sci & Engn, Turku 20500, Finland
[4] Univ Sultan Moulay Slimane, Ecole Super Technol Khenifra, Beni Mellal, Morocco
来源：
NANO FUTURES | 2021年 / 5卷 / 02期
基金：
芬兰科学院;
关键词：
bandgap; sol-gel synthesis; TiO2; photocatalysis; formic acid degradation; ANATASE-RUTILE TIO2; PHOTOCATALYTIC DEGRADATION; ORGANIC CONTAMINANTS; TITANIUM-DIOXIDE; COMMERCIAL TIO2; WATER-TREATMENT; SULFATED TIO2; NANOPARTICLES; PHOTOACTIVITY; ENHANCEMENT;
D O I：
10.1088/2399-1984/abfb7d
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
This work reports a key factor, the H2SO4 concentration, in controlling the physicochemical properties of titanium dioxide (TiO2) photocatalysts during the sol-gel synthesis. The photocatalysts synthesized using different concentrations of H2SO4 possess specific anatase/rutile ratios and crystallite sizes as well as surface areas, resulting in different photocatalytic performance in the degradation of formic acid in solution. The best photocatalytic performance is observed for the TiO2 photocatalyst containing a relatively high percentage of the rutile phase (similar to 84%), which is obtained from the sol-gel synthesis without H2SO4.
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收藏
页数：11
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