Fabrication and characterization of manganese dioxide (MnO2) nanoparticles and its degradation potential of benzene and pyrene

Kathirvel Brindhadevi; Seerangaraj Vasantharaj; Quynh Hoang Le; Sandhanasamy Devanesan; Karim Farhat; Xinghui Liu

doi:10.1016/j.chemosphere.2023.140123

Fabrication and characterization of manganese dioxide (MnO₂) nanoparticles and its degradation potential of benzene and pyrene

Chemosphere. 2023 Dec:343:140123. doi: 10.1016/j.chemosphere.2023.140123. Epub 2023 Sep 8.

Authors

Kathirvel Brindhadevi¹, Seerangaraj Vasantharaj², Quynh Hoang Le³, Sandhanasamy Devanesan⁴, Karim Farhat⁵, Xinghui Liu⁶

Affiliations

¹ School of Medicine and Pharmacy, Duy Tan University, Da Nang, Viet Nam; Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam. Electronic address: kathirvelbrindhadevi@duytan.edu.vn.
² CORX Lifesciences and Pharmaceutical Private Limited, Tiruchirappalli, Tamil Nadu, India.
³ School of Medicine and Pharmacy, Duy Tan University, Da Nang, Viet Nam; Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam.
⁴ Department of Physics and Astronomy, College of Science, King Saud University, P. O. Box 2455, Riyadh, 11451, Saudi Arabia.
⁵ Department of Urology, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
⁶ Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, 999077, Hong Kong, China.

PMID: 37690563
DOI: 10.1016/j.chemosphere.2023.140123

Abstract

MnO₂ nanoparticles have a wide range of applications, including catalytic abilities due to their oxygen reduction potential. Industrial processes and the burning of organic materials released PAHs into the biosphere which have adverse effects on living organisms when continually exposed. In this study, MnO₂ nanoparticles were synthesized chemically using sodium thiosulphate as reducing agent. MnO₂ nanoparticles were characterized using UV-visible adsorption spectroscopy and Fourier Transform Infrared Spectroscopy (FTIR). A X-Ray Diffraction Spectrophotometer (XRD), a Scanning Electron Microscopy - Energy Dispersive X-Ray Analyzer (SEM-EDAX), and Dynamic Light Scattering (DLS) were used to identify the crystalline nature and particle size of the fabricated MnO₂ nanoparticles. Batch adsorption studies were conducted to identify the optimal conditions for better benzene and pyrene adsorption from aqueous solution using MnO₂ nanoparticles. They are also effective in degrading benzene and pyrene by batch adsorption as determined by their adsorption isotherms and kinetics.

Keywords: Adsorption isotherm; Batch adsorption studies; Characterization experiments; Kinetic studies; MnO(2) nanoparticles.