title: One-Pot Synthesis of Fe3O4Nanoparticle Loaded 3D Porous Graphene Nanocomposites with Enhanced Nanozyme Activity for Glucose Detection.
abstract: A novel one-pot strategy is proposed to fabricate 3D porous graphene (3D GN) decorated with Fe3O4nanoparticles (Fe3O4NPs) by using hemin as iron source. During the process, graphene oxide was simultaneously reduced and self-assembled to form 3D graphene hydrogel while Fe3O4NPs synthesized from hemin distributed uniformly on 3D GN. The preparation process is simple, facile, economical, and green. The obtained freeze-dried product (3D GH-5) exhibits outstanding peroxidase-like activity. Compared to the traditional 2D graphene-based nanocomposites, the introduced 3D porous structure dramatically improved the catalytic activity, as well as the catalysis velocity and its affinity for substrate. The high catalytic activity could be ascribed to the formation of Fe3O4NPs and 3D porous graphene structures. Based on its peroxidase-like activity, 3D GH-5 was used for colorimetric determination of glucose with a low detection limit of 0.8 μM.
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, PR China.|College of Chemistry, Jilin University , Changchun 130012, PR China.
authors.forename: Qingqing
authors.initials: Q
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, PR China.
authors.forename: Xueping
authors.initials: X
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, PR China.
authors.forename: Liang
authors.initials: L
authors.lastname: Huang
authors.affiliation: College of Chemistry, Jilin University , Changchun 130012, PR China.
authors.forename: Zhiquan
authors.initials: Z
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, PR China.
authors.forename: Shaojun
authors.identifier: http://orcid.org/0000-0003-3197-7204
authors.initials: S
authors.lastname: Dong
keywords: 3D graphene nanocomposites; colorimetry; glucose detection; one-pot; peroxidase mimics