Synthesis of recyclable GO/Cu3(BTC)2/Fe3O4 hybrid nanocomposites with enhanced photocatalytic degradation of aflatoxin B1

Melvin S Samuel; K Mohanraj; Narendhar Chandrasekar; Ramachandran Balaji; Ethiraj Selvarajan

doi:10.1016/j.chemosphere.2021.132684

Synthesis of recyclable GO/Cu₃(BTC)₂/Fe₃O₄ hybrid nanocomposites with enhanced photocatalytic degradation of aflatoxin B1

Chemosphere. 2022 Mar;291(Pt 2):132684. doi: 10.1016/j.chemosphere.2021.132684. Epub 2021 Oct 27.

Authors

Melvin S Samuel¹, K Mohanraj², Narendhar Chandrasekar³, Ramachandran Balaji⁴, Ethiraj Selvarajan⁵

Affiliations

¹ School of Environmental Science and Engineering, Indian Institute of Technology, Kharagpur, West Bengal, 731 302, India.
² Department of Environmental Engineering and Management, Chaoyang University of Technology, Taichung, 41349, Taiwan.
³ Department of Nanoscience and Technology, Sri Ramakrishna Engineering College, Coimbatore, Tamil Nadu, India.
⁴ Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 106, Taiwan.
⁵ Department of Genetic Engineering, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, Chennai, 603203, Tamil Nadu, India. Electronic address: selrajan@gmail.com.

PMID: 34718022
DOI: 10.1016/j.chemosphere.2021.132684

Abstract

This study evaluated the photocatalytic performance of the activated carbon assisted GO/Cu₃(BTC)₂/Fe₃O₄ photocatalyst for aflatoxin B1 (AFB1) degradation under ultraviolet light. The nanocomposite was characterized by Fourier transform infrared spectrometry (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and nitrogen adsorption-desorption. The numerous factors influencing the degradation efficiency of AFB1 including catalyst dose, pH importance, and contact time were also probed. The elevated degradation performance of AFB1 by 99% was due to a larger surface area and improved GO/Cu₃(BTC)₂/Fe₃O₄ photocatalyst. The degradation process followed a pseudo-first-order kinetic model. Moreover, it is possible to quickly isolate the catalyst from the solution and retain successful operation. In the degradation of AFB1, the hole(h⁺) and the hydroxyl radicals(OH) were found to play a significant role. These studies showed that GO/Cu₃(BTC)₂/Fe₃O₄ has high capturing capacity and photoactivity synergy, thereby offering a quick effect, and green solution to AFB1 degradation.

Keywords: Aflatoxin B1; Graphene oxide; Photocatalytic degradation; Recyclability; UV light Irradiation.

MeSH terms

Aflatoxin B1*
Catalysis
Microscopy, Electron, Transmission
Nanocomposites*
Ultraviolet Rays

Substances

Aflatoxin B1