Three-Dimensional Porous Ti3C2Tx MXene–Graphene Hybrid Films for Glucose Biosensing

By Hui Gu, Yidan Xing, P. Xiong, Huiling Tang, Chenchen Li, Shu Chen, Rongjin Zeng, Kai Han, G. Shi. ACS Applied Nano Materials, 2019

141 citations recorded by the source corpus.

Incorporating two-dimensional (2D) graphene sheets into a 3D graphene structure provides porous structures to bind enzyme but with low enzyme affinity and unstable structure because of removal of the surficial functional group and the flexibility of graphene sheets. To address this issue, we herein constructed a 3D porous Ti3C2Tx MXene–graphene (MG) hybrid film through a facile mixing–drying process. Ti3C2Tx MXene nanosheets (MNS) with hydrophilic groups on the rigid flakes endowed the MG hybrid film with open porous structure and a highly hydrophilic miroenvironment. By simply controlling the content of Ti3C2Tx MNS and graphene sheets, the sizes of the internal pores were accordingly tunable. The 3D porous hybrid film, fabricated from Ti3C2Tx MNS and graphene sheets (weight ratios of 1:2 abd 1:3), supplied more open structure to facilitate the glucose oxidase (GOx) entering the internal pores, which probably enhanced the stable immobilization and retaining of the GOx in the film. As a result, the as-prop...

Subfields: Electrical and Electronic Engineering, Materials Chemistry, Molecular Biology

View Paper: https://www.semanticscholar.org/paper/35e29c41186dbc1a914d6e700ecfeb51be35e2ae