Fabrication of NIPMAM based polymer microgel network assisted rhodium nanoparticles for reductive degradation of toxic azo dyes

• DOI: 10.1016/j.heliyon.2024.e25385
• Publication Date: 2024-02-02T01:46:23Z
• Authors: Sadia Iqbal; Nimra Iqbal; Sara Musaddiq; Zahoor Hussain Fa...; Mohamed A. Habila; Saikh Mohammad Wa...; Amjad Iqbal
• Keywords: Sodium borohydride; Congo red; Methyl orange; Methyl red; Reducing agent; Acrylic acid

The aim of this study was to prepare poly-N-isopropylmethacrylamide-co-acrylic acid-acrylamide [p-(NIPMAM-co-AA-AAm)] via precipitation polymerization in an aqueous medium. Rhodium nanoparticles were formed the microgel network by in-situ reduction technique with addition sodium borohydride as a reducing agent. Pure p-(NIPMAM-co-AA-AAm) and hybrid microgels [Rh-(p-NIPMAM-co-AA-AAm)] examined using UV–Visible, FTIR (Fourier Transform Infrared), SEM (Scanning Electron Microscopy), TEM (Transmission DLS (Dynamic Light Scattering) XRD (X-Ray Diffraction) techniques. catalytic activities for degradation azo dyes such alizarin yellow (AY), congo red (CR), methyl orange (MO) compared mechanism action system examined. Various parameters including catalyst amount dye concentration influenced decomposition dyes. In order maximize reaction conditions dye's quick efficient decomposition, process monitored spectroscopic analysis. rate constants reductive measured under various conditions. When kapp values dyes, it found that showed superior activity MO CR AY.