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Kamal, Tahseen
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article
Cellulose acetate sheet supported gold nanoparticles for the catalytic reduction of toxic organic pollutants
Abstract
<jats:title>Abstract</jats:title><jats:p>Water contamination by toxic organic dyes represents a significant global challenge necessitating effective remediation strategies. Due to their high catalytic activity, considerable attention has been gained to metal-based nanocatalysts. Cellulose acetate sheets supported by gold nanoparticles through a reduction method were synthesized. The composite synthesized material presents a compelling platform for catalytic reduction in the remediation of toxic organic pollutants, ensuring controlled particle size and stability. In this study, the prepared cellulose acetate sheet (CA<jats:sub>sheet</jats:sub>) was dipped in a 0.001 M aqueous chloroauric acid (HAuCl<jats:sub>4</jats:sub>) solution and reduced by immersion in a 0.1 M sodium borohydride (NaBH<jats:sub>4</jats:sub>) aqueous solution. After the successful preparation of virgin cellulose acetate sheet (CA<jats:sub>sheet</jats:sub>) and gold-supported cellulose acetate sheet (Au-CA<jats:sub>sheet</jats:sub>) samples were assessed by scanning electron microscopy (SEM), X-ray crystallography (XRD), energy dispersive X-rays spectroscopy (EDX), and Fourier transform infrared spectroscopy (FTIR) analysis. The catalytic reduction reaction of toxic compounds i.e. reduction of 4-nitroaniline (4-NA), Congo red (CR), and reactive yellow (RY-42) by using NaBH<jats:sub>4</jats:sub>. The catalytic activity of the Au-CA<jats:sub>sheet</jats:sub> was exhibited by the reaction rate constant (<jats:italic>k</jats:italic><jats:sub>app</jats:sub>) values 0.3189, 0.1596, and 0.1593 min<jats:sup>−1</jats:sup> for CR, 4-NA, and RY-42 respectively. This kind of procedure for Au-CA<jats:sub>sheet</jats:sub> synthesis may be valid for different applications in catalysis, sensing, and environmental application.</jats:p>