Single-entity Ti3C2Tx MXene electro-oxidation. (March 2022)

• Record Type: Journal Article
• Authors: Nayak, Pranati; Yang, Minjun; Wang, Zhiwei; Li, Xiuting; Miao, Ruiyang; Compton, Richard G.
• Is Part Of: Applied materials today. Volume 26(2022)
• Publication Date: 2022-03
• Subjects: Nanoimpact -- MXenes -- Cyclic voltammetry -- Electrooxidation; Materials science -- Periodicals; Materials -- Research -- Periodicals; 620.1105
• DOI: 10.1016/j.apmt.2021.101335
• Languages: English
• ISSNs: 2352-9407

Abstract

Highlights: First-ever study on quantitative innate electro-oxidation behavior of single Ti3 C2 Tx MXene via single-entity electrochemistry (SEE). The extent of electro-oxidation depends on the applied electrode potential. At the highest applied potential (ca. 1.3 V), about 2% of total ti oxidises in a single Ti3 C2 Tx particle. A fair resemblance on the oxidation behavior of single entity Ti3 C2 Tx MXene with an ensemble of particles. Abstract: We quantify the innate electro-oxidation behavior of a single Ti3 C2 Tx MXene particle by Single-Entity Electrochemistry. MXene undergoes irreversible oxidation at potentials greater than 0.3 V (vs. SCE), with the extent of oxidation dependant on the applied potential. A close correlation is seen with ensembles of drop-cast particles with submonolayer coverage. Graphical abstract: Image, graphical abstract "Ti3 C2 Tx MXene particle on collision with potentiostated electrode surface renders surface oxidation through a visible current spike in the voltammogram."