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Studies on Photocatalytic Degradation for Organic Pollutants by TiO2/Au Composite and its Antibacterial Properties

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Abstract

TiO2/Au had been prepared readily from tetrabutyl titanate and chloroauric acid by in situ solvothermal method. SEM, XRD, UV-vis, FTIR, etc were used for characterizing the morphology, crystal structure, and optical performance of TiO2 and TiO2/Au. The photocatalytic degradation performance on methyl orange and antibacterial properties against Escherichia coli of TiO2 and TiO2/Au were studied. The results showed that the TiO2/Au both possessed superior photocatalytic properties under simulated or nature sunlight. The photocatalytic degradation rate of TiO2/Au on methyl orange was up to 91.57% that was obviously better than TiO2 (65.13%). Moreover, TiO2 and TiO2/Au had significant antibacterial properties against Escherichia coli, and the inhibition rate was up to 99.89%. The activity of TiO2 and TiO2/Au was tested by ESR and H2-TPR for analyzing the mechanism of the improvement of the photocatalytic activity and antibacterial properties.

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ACKNOWLEDGMENTS

The authors acknowledge Huanghuai University.

Funding

This research was financially supported by the project of youth backbone teachers of Henan province (Grant no. 2017GGJS172), Henan provincial natural science foundation of China (Grant nos. 182102311053, 192102310492 and 222102110180), Key scientific research projects of colleges and universities in Henan province (Grant no. 21B150012), and the key science and technology innovation demonstration projects of Henan province (Grant nos. 191110110600 and 17702).

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  1. College of Chemistry and Pharmaceutical Engineering, Huanghuai University, Zhumadian, 463000, Henan, China

    Qijie Xu & Zhun Liu

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  1. Qijie Xu
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Xu, Q., Liu, Z. Studies on Photocatalytic Degradation for Organic Pollutants by TiO2/Au Composite and its Antibacterial Properties. Theor Found Chem Eng 57, 1610–1617 (2023). https://doi.org/10.1134/S0040579523330114

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