RESEARCH ARTICLE
Synthesis and Characterization of Silver Nanoparticles-Filled and Polyvinyl Alcohol-Grafted Copolymer Composites for Column Adsorption and Photochemical Degradation of p-Nitrophenol
Pampa Debnath,
Samit Kumar Ray,
Pampa Debnath
Department of Polymer Science and Technology, University of Calcutta, Kolkata, West Bengal, India
Contribution: Conceptualization (equal), Data curation (lead), Formal analysis (lead), Investigation (lead), Methodology (lead), Writing - original draft (equal)
Search for more papers by this authorCorresponding Author
Samit Kumar Ray
Department of Polymer Science and Technology, University of Calcutta, Kolkata, West Bengal, India
Correspondence:
Samit Kumar Ray ([email protected])
Contribution: Conceptualization (equal), Data curation (supporting), Funding acquisition (lead), Project administration (lead), Resources (lead), Software (lead), Supervision (lead), Validation (lead), Writing - original draft (equal), Writing - review & editing (lead)
Search for more papers by this authorPampa Debnath,
Samit Kumar Ray,
Pampa Debnath
Department of Polymer Science and Technology, University of Calcutta, Kolkata, West Bengal, India
Contribution: Conceptualization (equal), Data curation (lead), Formal analysis (lead), Investigation (lead), Methodology (lead), Writing - original draft (equal)
Search for more papers by this authorCorresponding Author
Samit Kumar Ray
Department of Polymer Science and Technology, University of Calcutta, Kolkata, West Bengal, India
Correspondence:
Samit Kumar Ray ([email protected])
Contribution: Conceptualization (equal), Data curation (supporting), Funding acquisition (lead), Project administration (lead), Resources (lead), Software (lead), Supervision (lead), Validation (lead), Writing - original draft (equal), Writing - review & editing (lead)
Search for more papers by this authorFunding: The authors received no specific funding for this work.
ABSTRACT
Polyvinyl alcohol (PVA), sodium polyacrylate, and polyacrylonitrile are very effective for stabilizing and controlling the size of nanoparticles. Thus, PVA was grafted to the copolymer of acrylonitrile (AN) and acrylic acid/sodium acrylate (AA/NaAA) using N,N′-methylenebisacrylamide comonomer–crosslinker (MBA). Silver nanoparticles (AgNPs) were synthesized in situ in the polymerization mixtures by reduction of AgNO3 with ascorbic acid. These nanocomposites were characterized and used for the removal and photocatalytic degradation of p-nitrophenol (PNP) from water. Based on the Box–Behnken design of the response surface methodology, the nanocomposite prepared with the AN:NaAA/AA molar ratio/MBA wt.%/PVA wt.% of 5:1/0.5/2 and impregnated with AgNPs of 18–30 nm average size (noted as PVACP5Ag) showed the optimized results. PVACP5Ag showed the equilibrium batch adsorption (qe, mg/g) of 240.93 from 50 mg/L PNP in water and a qe of 36.2 in fixed bed adsorption at a feed inlet concentration (mgL−1)/inflow rate (mLmin−1)/bed height (mm) of 50/30/30. The same composite showed a degradation of 96% after 7 min of exposure to sunlight in the presence of NaBH4 with a first-order rate constant of 0.3 min−1 and 90.3% degradation after 110 min of exposure with a first-order rate constant of 0.01 min−1 without any reducing agent.
Open Research
Data Availability Statement
The data that support the findings of this study are available from the corresponding author upon reasonable request.
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