Extraction of copper ions from aqueous medium by microgel particles for in-situ fabrication of copper nanoparticles to degrade toxic dyes

Muhammad Arif, Muhammad Shahid, Ahmad Irfan, Jan Nisar, Xiaofei Wang, Nayab Batool, Muhammad Ali, Zahoor H. Farooqi, Robina Begum

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

Most of the transition metal ions are toxic and their removal from water is important. For this purpose, nearly monodisperse spherical core shell microgel particles with diameter of 88 ± 3 nm have been synthesized by free radical precipitation polymerization method and characterized by fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), dynamic light scattering (DLS), and transmission electron microscopy (TEM). Extraction of copper ions from water under several conditions of pH, copper ions content and core shell microgel concentrations was undertaken. Several adsorption isotherms were tested to explore the process of adsorption of copper ions on the microgel particles. Kinetics of adsorption process was examined by pseudo first order, pseudo second order, intra-particle diffusion and Elovich models. Copper ions adsorbed in shell region of core shell microgel were reduced to copper nanoparticles. The hybrid microgel was used to reduce organic pollutants such as 4-nitrophenol (4NP), methylene blue (MB), and methyl orange (MO) in aqueous medium. The value of pseudo first order rate constant for catalytic reduction of 4NP, MB, and MO was found 0.602, 0.831, and 0.874 min-1 respectively. The resultant core shell hybrid microgel system can serve as efficient catalyst for numerous other organic transformations.
Original languageEnglish (US)
Pages (from-to)1219-1241
Number of pages23
JournalZeitschrift fur Physikalische Chemie
Volume236
Issue number9
DOIs
StatePublished - Sep 1 2022
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-21

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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