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

Abstract Silver nanoparticles (AgNPs) was loaded on spherical cellulose‐immobilized tannin resin (CC‐TA) with AgNO 3 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.