Synthesis of ternary nanocomposites of GO–MnO2@Tau and GO-MnO2@CA for efficient removal of dyes

10.48129/kjs.19959

Authors

  • Iram Bibi Department of Chemistry, Hazara University 21120, Mansehra, KP, Pakistan
  • Khalid Raza Department of Chemistry, Hazara University 21120, Mansehra, KP, Pakistan
  • Wajid Rehman Department of Chemistry, Hazara University 21120, Mansehra, KP, Pakistan http://orcid.org/0000-0003-0128-0377
  • Siddiqa Begum Department of Chemistry, Hazara University 21120, Mansehra, KP, Pakistan
  • Saz Muhammad Lahore Garrison University, Main Campus, Sector C DHA Phase VI, Lahore
  • Syed W. H. Shah Department of Chemistry, Hazara University 21120, Mansehra, KP, Pakistan
  • Luqman A Shah National Centre of Excellence in Physical Chemistry, Peshawar University, Peshawar, KP, Pakistan
  • saira Bibi Department of Chemistry, Hazara University 21120, Mansehra, KP, Pakistan
  • Wajiha Khan Department of biotechnology COMSATS University Islamabad, Abbottabad campus, Pakistan
  • Magda H. Abdellatif Department of Chemistry, College of Sciences, Taif University, P. O Box 11099, Taif 21944, Saudi Arabia.

DOI:

https://doi.org/10.48129/kjs.19959

Abstract

Here, we report the facile route for the synthesis of graphene oxide–functionalized manganese dioxide (GO–MnO2@Tau (GMT) and GO-MnO2@CA) (GMC) nanohybrids and their use as adsorbents for removal of selected dyes from industrial effluents. These nanohybrids were also tested for antibacterial activity in wastewater. Manganese dioxide nanoparticles were synthesized by redox reaction between potassium permanganate (KMnO4) and manganese acetate (Mn(CH3COO)2.4H2O) and functionalized with taurine (H3N+CH2CH2SO3) and caproic acid (CH3(CH2)8COOH) to produce MnO2@Tau and MnO2@CA. These functionalized-MnO2 ­were then exploited as reinforcement in graphene oxide (GO) to fabricate nanohybrids. The nanohybrids were characterized for their morphology, structure, crystallinity and thermal behavior by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infra-red (FTIR) spectroscopy, UV-Visible spectroscopy and thermogravimetric analysis (TGA). They were investigated for adsorptive removal of methylene blue and malachite green and effect of temperature and quantity of adsorbent were studied. The adsorption of both dyes followed pseudo first order kinetics. The antibacterial activity of GO-MnO2@Tau and GO-MnO2@CA nanohybrids were tested against two bacterial strains (Gram-negative E. coli, and the Gram-positive S. aureus) and the results revealed efficient inhibition of these pathogens.

Author Biography

Wajid Rehman, Department of Chemistry, Hazara University 21120, Mansehra, KP, Pakistan

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Published

14-09-2022

Issue

Section

Chemistry