Affinity‐tuned peroxidase‐like activity of hydrogel‐supported Fe3O4 nanozyme through alteration of crosslinking concentration. Issue 8 (3rd November 2015)

• Record Type: Journal Article
• Authors: Sang, Jilong; Wu, Ronglan; Guo, Pingping; Du, Juan; Xu, Shimei; Wang, Jide
• Is Part Of: Journal of applied polymer science. Volume 133:Issue 8(2016)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2015-11-03
• Subjects: biomimetic -- catalysts -- composites -- crosslinking -- kinetics; Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.43065
• Languages: English
• ISSNs: 0021-8995

Abstract

ABSTRACT: In this work, we evaluated the effect of crosslinking concentration on the affinity of poly (2‐acrylamido‐2‐methyl‐1‐propansulfonic acid) (PAMPS) hydrogel‐supported Fe3 O4 nanozyme towards substrates (tetramethylbenzidine (TMB) and H2 O2 ). The peroxidase‐like catalytic activity of PAMPS/Fe3 O4 nanozyme was discussed with respect to crosslinking concentration of PAMPS hydrogel for the oxidation of TMB in the presence of H2 O2 at room temperature. High catalytic activity was achieved due to good dispersion of Fe3 O4 nanozyme in the hydrogel network and strong affinity of PAMPS hydrogel‐supported Fe3 O4 nanozyme towards substrates. The affinity between the hydrogel‐supported Fe3 O4 nanozyme and substrates can be improved by regulating the crosslinking concentration of PAMPS hydrogel without other trenchant experimental conditions. In addition, the result indicated that H2 O2 can be detected even at a concentration as low as 1.5 × 10 −6 mol L −1 with a linear detection range of 1.5–9.8 × 10 −6 mol L −1 . Such investigations not only showed a new approach to improve the affinity and peroxidase‐like activity of Fe3 O4 nanozyme, but also verified its potential application in bio‐detection and environmental chemistry. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci.2016, 133, 43065. Abstract :