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HERO ID
5083698
Reference Type
Journal Article
Title
Highly Efficient Degradation of Tartrazine with a Benzoic Acid/TiO2 System
Author(s)
Zhou, Y; Qin, Y; Dai, W; Luo, X
Year
2019
Volume
4
Issue
1
Page Numbers
546-554
Language
English
PMID
31459349
DOI
10.1021/acsomega.8b03267
Web of Science Id
WOS:000460214700059
Abstract
The roles of benzoic acid and its derivatives in the photocatalytic degradation of tartrazine (TZ) by titanium dioxide have been studied. A series of comparative experiments were carried out, such as the experimental comparisons of concentrations, pH values, effects on the para-position of benzoic acid, gas atmospheres, and different target pollutants. It should be noted that the degradation rate of TZ solution without benzoic acid and benzoic acid after degradation for 90 min was 28.69 and 99.08%, respectively. The reason for the above results is that benzoic acid acts as an electron donor to react with photogenerated holes, suppressing the recombination of photogenerated holes and electrons, and thus causing a significant increase in the degradation rate. Moreover, the degradation process is mainly induced by O2•- and photogenerated holes (h+). It is the first time that the benzoic acid/TiO2 system has been used to degrade the TZ dye. In addition, the benzoic acid/TiO2 system is also suitable for the degradation of other organic dyes such as methyl orange, rhodamine B, methylene blue, and methyl violet.
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PFOA (335-67-1) and PFOS (1763-23-1)
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