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- W2483722771 abstract "Abstract A facile method was developed for the one-step synthesis of silver nanoparticles (AgNPs), co-stabilized by the polyelectrolyte poly(acrylamide-co-diallyldimethylammoniumchloride) (PADA) and the silicate matrix N1-(3-trimethoxysilylpropyl)diethylenetriamine (TPDT). Here, TPDT acted as reducing agent and both PADA and TPDT served as capping agent for AgNPs. As PADA improved the catalytic properties of AgNPs, its concentration was optimized and the optimum concentration of PADA was found to be 1 wt.% among the concentrations 0.25, 0.5, 1 and 2 wt.%. The AgNPs were characterized using UV–vis absorption spectroscopy, HRTEM, EDX, SAED and FTIR analyses. The PADA(1)-Ag-TPDT NPs showed the better catalytic activity towards electrochemical reduction of H 2 O 2 and catalytic conversion of 4-nitroaniline (4-NA) to p -phenylenediamine (PPD). The PADA(1)-Ag-TPDT NPs was used to construct the non-enzymatic electrochemical sensor for the detection of H 2 O 2 . Using the linear sweep voltammetry (LSV) and square wave voltammetry (SWV) techniques, the lowest experimental detection limits attained for H 2 O 2 sensing were 5 and 0.2 μM, respectively. Moreover, remarkably a fast conversion of 4-NA to PPD was observed over the PADA(1)-Ag-TPDT NPs catalyst with a rate constant of 0.096 s −1 and the product (PPD) formation was confirmed by 1 H NMR spectroscopy." @default.
- W2483722771 created "2016-08-23" @default.
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- W2483722771 date "2016-12-01" @default.
- W2483722771 modified "2023-09-27" @default.
- W2483722771 title "Polyelectrolyte assisted synthesis and enhanced catalysis of silver nanoparticles: Electrocatalytic reduction of hydrogen peroxide and catalytic reduction of 4-nitroaniline" @default.
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- W2483722771 doi "https://doi.org/10.1016/j.molcata.2016.08.001" @default.
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