Synthesis of sensitive hybrid polymer microgels for catalytic reduction of organic pollutants

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• 作者：Luqman Ali Shah^a ; ^b ; ^{luqman_alisha@yahoo.com" class="auth_mail" title="E-mail the corresponding author} ; Abdul Haleem^a ; Murtaza Sayed^c ; Mohammad Siddiq^a ; ^{m_sidiq12@yahoo.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Responsive microgels ; In-situ chemical reduction ; Metal nanoparticles ; Catalytic activity
• 刊名：Journal of Environmental Chemical Engineering
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：4
• 期：3
• 页码：3492-3497
• 全文大小：1785 K

文摘

Multiresponsive tercopolymer microgel poly(N-isopropyl acrylamide-co-methacrylic acid-co-2-hydroxyethyl methacrylate) was synthesized by free radical emulsion polymerization. The silver and gold nanoparticles were homogeneously dispersed in polymer network by in-situ chemical reduction method at 10 and 40 °C using sodium borohydride as reducing agent. FT-IR spectroscopy confirms the microgel synthesis and existing of metal nanoparticles inside the polymer network. Temperature and pH sensitivity on particle size of the microgel particles was investigated by dynamic light scattering. Transmission electron microscopy analysis showed that the size of Ag and Au nanoparticles is 13 and 7 nm, respectively. The catalytic activity of hybrid microgels was studied for the reduction of aqueous solutions of 4-nitrophenol, congo red and methylene blue as model reactions.