A comparative study on the oxidation of two-dimensional Ti₃C₂MXene structures in different environments

Abstract

The effect of different environments on the oxidation of Ti3C2MXene structures is investigated using ReaxFF molecular dynamics simulations and experimental techniques.

Synthesis and photocatalytic H2‐production activity of plasma‐treated Ti3C2Tx MXene modified graphitic carbon nitride

“…In the Raman spectra ( Figure 1A), two broad bands at around 1359 and 1586 cm −1 were observed, which usually are assigned to D band (disordered sp 2 carbon) and G band (ordered graphite), respectively. [42][43][44] A further observation indicates that p-Ti 3 C 2 T x MXene shows a higher D/G intensity ratio than that of Ti 3 C 2 T x MXene without plasma treatment. The result implies that plasma treatment resulted in disordered graphitic carbon, as a consequence of thermal diffusion and impact of ionized H + from plasma induction.…”

“…In order to investigate the influences of plasma treatment on Ti 3 C 2 T x MXene, the Raman, FTIR and high‐resolution XPS spectra were measured and the results are shown in Figure and Figure . In the Raman spectra (Figure A), two broad bands at around 1359 and 1586 cm −1 were observed, which usually are assigned to D band (disordered sp 2 carbon) and G band (ordered graphite), respectively . A further observation indicates that p‐Ti 3 C 2 T x MXene shows a higher D/G intensity ratio than that of Ti 3 C 2 T x MXene without plasma treatment.…”

“…As proved by Rakhi et al, oxygen is present mainly at the edges of the Ti 2 CT x MXene sheet after annealing in N 2 /H 2 atmosphere . Moreover, due to the influence of ionized H + , the Ti atoms in the middle layer could diffuse to the surface to form the Ti–O structure, which also leads to reduction of Ti–C bond and increase of disordered graphitic carbon. Figure shows the high‐resolution XPS spectra of C 1 s and F 1 s for Ti 3 C 2 T x MXene.…”

The engineering and immobilization of penicillin G acylase onto thermo‐sensitive tri‐block copolymer system

“…What is more, evaluation from bond energy, 34 and Ar increased gradually. However, as immobilized PGA increased to certain extent, the influence of the molecular size on Ea and Ar would stand out.…”

MXene‐Based Anodes for Metal‐Ion Batteries

“…[41,[55][56][57] For example, Zhang et al were able to combine the good rate performance and cycling stability of MXenes with the low delithiation potentials of TiO 2 and Nb 2 O 5 in TiO 2 @Ti 3 C 2 T x , Nb 2 O 5 @Nb 2 CT x and Nb 2 O 5 @Nb 4 C 3 T x composites. [56,58] Partially oxidising MXenes demonstrates a facile approach to electrode fabrication, and recent developments in our understanding of MXene oxidation (often considered a drawback of MXenes in application) [35,[59][60][61][62][63] readily prepare the scientific community to explore and optimise these routes further.…”