Sonochemical synthesis of graphitic carbon nitride-manganese oxide interfaces for enhanced photocatalytic degradation of tetracycline hydrochloride

Yashas, S. R. and Shivaraju, H. P. and Pema, Gyaltsen and Kumara Swamy, N. and Namratha, K. and Gurupadayya, B. and Madhusudan, P. (2020) Sonochemical synthesis of graphitic carbon nitride-manganese oxide interfaces for enhanced photocatalytic degradation of tetracycline hydrochloride. Environmental Science and Pollution Research. ISSN 1614-7499

Text Yashas2021_Article_SonochemicalSynthesisOfGraphit.pdf - Published Version Restricted to Repository staff only Download (2MB) | Request a copy

Abstract

The present study focuses on the sonochemical synthesis of graphitic carbon nitride-manganese oxide (GCN/MnO2) nanocomposite for photocatalytic degradation of an environmentally hazardous pharmaceutical compound, tetracycline hydrochloride (TcH). The sonochemical synthesis aided in tailoring the morphology of GCN/MnO2. The characterization results of SEM/FESEM, XRD, FTIR, UV-Vis spectra, EIS, CV, etc., revealed on the morphology, composition, crystallinity, and other photo-electro-intrinsic properties of the materials. The synergy of GCN and MnO(2)results in rapid electron transfer, efficient visible-light absorption, and slower electron-hole pair recombination through its photo-responsive traits against TcH. It was noted that similar to 93% TcH (20 mg L-1) degradation was achieved for 30-mg catalyst dose under light-emitting diode (LED) irradiation (9 W, 220 V) in 135-min duration. The TcH mineralization results were well fit to pseudo-first-order kinetics with a rate constant of 0.02 min(-1)(R-2= 0.994). In addition, the composite possessed fair reusability for consequent cycles. Hence, the as-synthesized composite applied for photocatalysis and photoelectrocatalysis fosters a fit-for-purpose and reliable system in the decontamination of TcH in environmental samples.

Item Type:	Article
Subjects:	B Life Science > Environmental Science
Divisions:	Department of > Environmental Science
Depositing User:	Mr Umendra uom
Date Deposited:	09 Mar 2021 06:27
Last Modified:	07 Dec 2022 05:14
URI:	http://eprints.uni-mysore.ac.in/id/eprint/15513

Actions (login required)

View Item