Soft hydrogels for dual use: Template for metal nanoparticle synthesis and a reactor in the reduction of nitrophenols

Light-Concentrating Plasmonic Au Superstructures with Significantly Visible-Light-Enhanced Catalytic Performance

“…[52][53][54] The novel metals/gels composite catalysts showed great potential in commercial reaction catalysis, dye degradation and hydrogen generation, with advantages of low cost, cataytic stability and recyclability. In contrast, the Au superstructures in this work not only serve as efficicent catalysts for normal catalytic reactions unde dark conditions, but also represent a class of novel light-sensitive catalysts with remarkable visible-light-enhanced catalytic performance.…”

Elaboration of metal (M: Co, Cu, Ni, Fe) embedded poly(acrylic acid-co-acrylamide) hydrogel nanocomposites: An attempt to synthesize uncommon architectured “Auto-active” nanocatalysts for treatment of dyeing wastewater

“…The metal embedded hydrogel nanocomposites were prepared by following a previously published procedure [24][25][26]. Typically, 0.1 g of each P(AA-co-AM) hydrogel was rinsed into 100 mL of 500 ppm metal precursor solution (M n+ : Co 2+ , Cu 2+ , Ni 2+ and Fe 3+ ) at room temperature for 24 h. The solid fraction was separated and then kept in deionized water for another 12 h to remove the free unbound metal ions.…”

“…3(A and B). As far as possible, the amounts of active amide groups in the polymeric chains of P(AA-co-AM) hydrogels become the chief determinant of M n+ -binding tendency towards the polymeric network [8,26]. The in situ reduction of absorbed metal ions such as Co 2+ , Cu 2+ , Ni 2+ and Fe 3+ distinctly depends on the nature and amount of absorbed metal ions, and on the susceptibility of hydrogel matrix in conserving the reduction process.…”

Organic/inorganic nanocomposite hydrogels

“…The process is gaining popularity for their technological advantages over the ex situ methods because particle size and morphology can be controlled with relative ease (Murali Mohan et al, 2007. Hydrogels synthesized with ionic monomers such as AMPS (Sahiner et al, 2010b(Sahiner et al, , 2010aOzay et al, 2011b), AA (Thomas et al, 2007;Murali Mohan et al, 2010), methacrylic acid (MAA) (Sivudu et al, 2008), viniyl phosphonic acid (VPA) Sahiner, 2012, 2013), acrylamidoglycolic acid (Butun and Sahiner, 2011), vinyl sulfonic acid (Murali Mohan et al, 2010), 3-sulfopropyl methacrylate (Sahiner et al, 2012b;Turhan et al, 2013a,b), and acryloyl phenylalanine (Kim et al, 2011) were often used as a template for metal fabrication because of their strong ion exchange capability. Hydrogels synthesized with ionic monomers such as AMPS (Sahiner et al, 2010b(Sahiner et al, , 2010aOzay et al, 2011b), AA (Thomas et al, 2007;Murali Mohan et al, 2010), methacrylic acid (MAA) (Sivudu et al, 2008), viniyl phosphonic acid (VPA) Sahiner, 2012, 2013), acrylamidoglycolic acid (Butun and Sahiner, 2011), vinyl sulfonic acid (Murali Mohan et al, 2010), 3-sulfopropyl methacrylate (Sahiner et al, 2012b;Turhan et al, 2013a,b), and acryloyl phenylalanine (Kim et al, 2011) were often used as a template for metal fabrication because of their strong ion exchange capability.…”