Photocatalytic Performance and Mechanism Research of Ag/HSTiO2 on Degradation of Methyl Orange

Mingxin Li; Renquan Guan; Jiaxin Li; Zhao Zhao; Junkai Zhang; Yunfeng Qi; Hongju Zhai; Lijing Wang

doi:10.1021/acsomega.0c01832

Photocatalytic Performance and Mechanism Research of Ag/HSTiO₂ on Degradation of Methyl Orange

ACS Omega. 2020 Aug 21;5(34):21451-21457. doi: 10.1021/acsomega.0c01832. eCollection 2020 Sep 1.

Authors

Mingxin Li^{1

2}, Renquan Guan^{1

3

4

2

5}, Jiaxin Li², Zhao Zhao⁵, Junkai Zhang⁵, Yunfeng Qi¹, Hongju Zhai², Lijing Wang³

Affiliations

¹ Jilin Provincial Key Laboratory of Plant Resource Science and Green Production, Jilin Normal University, Siping 136000, People's Republic of China.
² Key Laboratory of Preparation and Applications of Environmental Friendly Materials of the Ministry of Education, Jilin Normal University, Changchun 130103, China.
³ Henan Engineering Center of New Energy Battery Materials, Henan D&A Engineering Center of Advanced Battery Materials, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, People's Republic of China.
⁴ College of Chemistry, Northeast Normal University, Changchun 130024, China.
⁵ Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun 130103, China.

Abstract

The Sol-gel method is successfully used to prepare high specific surface area TiO₂ (HSTiO₂). Then, the photodeposition method is used to composite silver particles with HSTiO₂. X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Brunauer-Emmett-Teller, and UV-vis spectroscopy are used to characterize the Ag/HSTiO₂ nanocomposites. It can be concluded that the prepared TiO₂ has a large specific surface area, reaching 125.5 m² g^-1. Additionally, the addition of silver particles successfully broadens the photoresponse range from the UV region to the visible light region. In order to evaluate the photocatalytic activity of Ag/HSTiO₂, we conducted the methyl orange degradation test. The results showed that the photocatalytic activity of the sample is significantly higher than that of pure TiO₂.