溶胶-凝胶衍生TiO2的带隙优化及其对甲酸光降解的影响

IF 2.5 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Nano Futures Pub Date : 2021-06-01 DOI:10.1088/2399-1984/abfb7d

M. Zouheir, O. Assila, K. Tanji, A. El Gaidoumi, J. Araña, J. M. Doña Rodríguez, J. Smått, T. Huynh, A. Kherbeche

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引用次数: 16

摘要

本文报道了在溶胶-凝胶合成过程中，H2SO4浓度是控制二氧化钛光催化剂理化性质的关键因素。不同浓度H2SO4合成的光催化剂具有特定的锐钛矿/金红石比、晶粒尺寸和比表面积，从而对溶液中甲酸的降解产生不同的光催化性能。采用溶胶-凝胶法合成的TiO2光催化剂中，金红石相含量较高(约84%)，光催化性能最好。

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

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 (∼84%), which is obtained from the sol–gel synthesis without H2SO4.

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来源期刊

Nano Futures Chemistry-General Chemistry

CiteScore

4.30

自引率

0.00%

发文量

期刊介绍： Nano Futures mission is to reflect the diverse and multidisciplinary field of nanoscience and nanotechnology that now brings together researchers from across physics, chemistry, biomedicine, materials science, engineering and industry.