Facile photo-ultrasonic assisted reduction for preparation of rGO/Ag2CO3 nanocomposites with enhanced photocatalytic oxidation activity for tetracycline

Abulajiang Reheman; Kuerbangnisha Kadeer; Kenji Okitsu; Maimaiti Halidan; Yalkunjan Tursun; Talifu Dilinuer; Abulizi Abulikemu

doi:10.1016/j.ultsonch.2018.10.030

Facile photo-ultrasonic assisted reduction for preparation of rGO/Ag₂CO₃ nanocomposites with enhanced photocatalytic oxidation activity for tetracycline

Ultrason Sonochem. 2019 Mar:51:166-177. doi: 10.1016/j.ultsonch.2018.10.030. Epub 2018 Oct 25.

Authors

Abulajiang Reheman¹, Kuerbangnisha Kadeer¹, Kenji Okitsu², Maimaiti Halidan¹, Yalkunjan Tursun¹, Talifu Dilinuer¹, Abulizi Abulikemu³

Affiliations

¹ Key Laboratory of Coal Conversion & Chemical Engineering Process (Xinjiang Uyghur Autonomous Region), College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, PR China.
² Graduate School of Humanities and Sustainable System Sciences, Osaka Prefecture University, Osaka 599-8531, Japan.
³ Key Laboratory of Coal Conversion & Chemical Engineering Process (Xinjiang Uyghur Autonomous Region), College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, PR China. Electronic address: aablek@xju.edu.cn.

PMID: 30401624
DOI: 10.1016/j.ultsonch.2018.10.030

Abstract

Various antibiotics in the aquatic systems have threat the aquatic ecosystem balance and the human health. In this study, a degradation treatment method for tetracycline (TC), one of the commonly used antibiotics, was explored by using novel photocatalysts of rGO/Ag₂CO₃ under simulated sunlight, because conventional treatment methods are not efficient on the removal of TC. rGO/Ag₂CO₃ nanocomposites were synthesized via a facile photo-ultrasonic assisted reduction method. More than 90% of TC was removed by 1% (weight_rGO/weight_composites) rGO/Ag₂CO₃ within 60 min at pH = 4, which was about 1.3 times higher than that of pure Ag₂CO₃. The cycling experiments indicated that 1% rGO/Ag₂CO₃ was highly stable and could be reused for at least 5 cycles without significant deactivation to its photocatalytic activity. In addition, the effects of pH, temperature, and dosage amount of 1% rGO/Ag₂CO₃ on photocatalytic degradation were investigated. Meanwhile, the effect of ultrasonic on the degradation of TC was also investigated. This study can provide a new method for the preparation of smaller nanosized materials and photocatalysts with high activity and stability for its environmental or other applications.

Keywords: Photocatalytic mechanism; Tetracycline; Ultrasound; rGO/Ag(2)CO(3).

MeSH terms

Carbonates / chemistry*
Electrochemistry
Graphite / chemistry*
Hydrogen-Ion Concentration
Models, Molecular
Molecular Conformation
Oxidation-Reduction
Oxides / chemistry*
Photolysis*
Silver Compounds / chemistry*
Temperature
Tetracycline / chemistry*
Ultrasonic Waves*

Substances

Carbonates
Oxides
Silver Compounds
Graphite
Tetracycline
silver carbonate