Preparation of Silver Nanoparticles Supported on Cellulose‐Immobilized Tannin Resin and Its Catalytic Activity

Abstract

AbstractSilver nanoparticles (AgNPs) was loaded on spherical cellulose‐immobilized tannin resin (CC‐TA) with AgNO3 solution as the silver source, where CC‐TA was prepared by the cross‐linking polymerization of tannin‐based pre‐polymer and cellulose. The tannin introduced onto the cellulose backbone was used as a reduction reagent for silver ions and a stabilizing agent for AgNPs. The AgNPs are uniform, and the average size is about 6.44±3.19 nm. The catalytic activity of AgNPs supported on cellulose‐immobilized tannin resin(CC‐TA@AgNPs)was detected by the reaction of 4‐nitrophenol (4‐NP) to 4‐aminophenol (4‐AP). This reaction could be accomplished within 1.5 min with an apparent rate constant of 2.32 min−1. The CC‐TA@AgNPs has good cycle catalytic performance, and the conversion rate of 4‐NP to 4‐AP in the presence of CC‐TA@AgNPs is about 100 % after five consecutive cycles. Therefore, the CC‐TA@AgNPs is expected to be a promising catalytic material.