Hierarchically porous cellulose nanofibril aerogel decorated with polypyrrole and nickel-cobalt layered double hydroxide for high-performance nonenzymatic glucose sensors  

作　　者：Xuanze Li Wenyan Tian Caichao Wan Sulai Liu Xinyi Liu Jiahui Su Huayun Chai Yiqiang Wu 

机构地区：[1]College of Materials Science and Engineering,Central South University of Forestry and Technology,Changsha 410004,China [2]Department of Hepatobiliary Surgery,Hunan Provincial People’s Hospital,Changsha 410000,China

出　　处：《Frontiers of Chemical Science and Engineering》2023年第10期1593-1607,共15页化学科学与工程前沿（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.31901249),the Hunan Provincial Natural Science Foundation of China(Grant No.2022JJ30079);the Hunan Provincial Technical Innovation Platform and Talent Program in Science and Technology(Grant No.2020RC3041);the Training Program for Excellent Young Innovators of Changsha(Grant No.kq2106056).

摘　　要：With increasing emphasis on green chemistry,biomass-based materials have attracted increased attention regarding the development of highly efficient functional materials.Herein,a new pore-rich cellulose nanofibril aerogel is utilized as a substrate to integrate highly conductive polypyrrole and active nanoflower-like nickel-cobalt layered double hydroxide through in situ chemical polymerization and electrodeposition.This ternary composite can act as an effective self-supported electrode for the electrocatalytic oxidation of glucose.With the synergistic effect of three heterogeneous components,the electrode achieves outstanding glucose sensing performance,including a high sensitivity(851.4μA·mmol^(−1)·L·cm^(−2)),a short response time(2.2 s),a wide linear range(two stages:0.001−8.145 and 8.145−35.500 mmol·L^(−1)),strong immunity to interference,outstanding intraelectrode and interelectrode reproducibility,a favorable toxicity resistance(Cl^(‒)),and a good long-term stability(maintaining 86.0%of the original value after 30 d).These data are superior to those of some traditional glucose sensors using nonbiomass substrates.When determining the blood glucose level of a human serum,this electrode realizes a high recovery rate of 97.07%–98.89%,validating the potential for highperformance blood glucose sensing.

关 键 词：cellulose nanofibril AEROGEL nickel-cobalt layered double hydroxide POLYPYRROLE nonenzymatic glucose sensor 

分 类 号：O63[理学—高分子化学]