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

Author:

Arif Muhammad12ORCID,Shahid Muhammad1ORCID,Irfan Ahmad34ORCID,Nisar Jan5ORCID,Wang Xiaofei6,Batool Nayab1,Ali Muhammad7,Farooqi Zahoor H.1ORCID,Begum Robina1ORCID

Affiliation:

1. School of Chemistry, University of the Punjab , New Campus , Lahore 54590 , Pakistan

2. Department of Chemistry , School of Science, University of Management and Technology , Lahore 54770 , Pakistan

3. Research Center for Advanced Materials Science (RCAMS), King Khalid University , Abha 61413 , Saudi Arabia

4. Department of Chemistry , Faculty of Science, King Khalid University , Abha 61413 , Saudi Arabia

5. National Centre of Excellence in Physical Chemistry, University of Peshawar , Peshawar 25120 , Pakistan

6. Department of Chemistry , State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, The Key Laboratory for Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University , Xiamen , Fujian 361005 , P. R. China

7. Faculty of Agricultural Sciences, University of the Punjab , New Campus , Lahore 54590 , Pakistan

Abstract

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.

Publisher

Walter de Gruyter GmbH

Subject

Physical and Theoretical Chemistry

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