Inherent electrochemistry and charge transfer properties of few-layered two-dimensional Ti3C2Tx MXene. Issue 36 (21st June 2018)

• Record Type: Journal Article
• Authors: Nayak, Pranati; Jiang, Qiu; Mohanraman, Rajeshkumar; Anjum, Dalaver; Hedhili, Mohamed Nejib; Alshareef, Husam N.
• Is Part Of: Nanoscale. Volume 10:Issue 36(2018)
• Page Start: 17030
• Page End: 17037
• Publication Date: 2018-06-21
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c8nr01883a
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : Few-layered Ti3 C2 T x MXene undergoes more electro-oxidation in positive potential window and aqueous medium compared to a multi-layered and bulk 3D stack of Ti3 C2 T x layers. Abstract : We report the effect of the Ti3 C2 T x MXene flake thickness on its inherent electrochemistry and heterogeneous charge transfer characteristics. It is shown that Ti3 C2 T x undergoes irreversible oxidation in a positive potential window, which strongly depends on the flake thickness and pH of the electrolyte. Few-layered Ti3 C2 T x exhibits faster electron transfer kinetics ( k 0 = 0.09533 cm s −1 ) with a [Fe(CN)6 ] 4−/3− redox mediator compared to multi-layered Ti3 C2 T x ( k 0 = 0.00503 cm s −1 ). In addition, the few-layered free standing Ti3 C2 T x film electrode remains intact after enduring irreversible oxidation.