Dye adsorption and decomposition on two-dimensional titanium carbide in aqueous media

Abstract

Herein we report on the adsorption and photocatalytic decomposition of organic molecules in aqueous environments containing two-dimensional Ti3C2Tx, a representative of the MXene family.

Effect of Synthesis on Quality, Electronic Properties and Environmental Stability of Individual Monolayer Ti3C2 MXene Flakes

“…Oxidation of Ti 3 C 2 T x resulting in the formation of titanium dioxide has been discussed in previous studies [24] and is also illustrated by Figure 1C and 2H. It is well known that oxidation of a 3D material often results in the formation of a passivating layer of a product that slows the reaction as it grows in thickness.…”

“…Ti 3 C 2 T x flakes produced by Route 1 are smaller and have uneven edges decorated with tiny dark particles ( Figure 1C), which we attribute to titanium dioxide, based on the results of prior studies. [24] In high resolution TEM images, Ti 3 C 2 T x flakes produced by Route 1 reveal numerous pin holes ( Figure 1C). On the other hand, flakes produced using Route 2 are larger, have well-defined and clean edges and are visually holefree ( Figure 1E).…”

“…Monolayer MXene flakes cannot sustain prolonged exposure to oxygen in the presence of water [24] or at high temperature. [46] Previous studies showed the formation of titanium dioxide and carbon, with nucleation of titania crystals along the edges of MXene flakes.…”

In situ hybridization of an MXene/TiO2/NiFeCo-layered double hydroxide composite for electrochemical and photoelectrochemical oxygen evolution

“…It has been reported previously that surface defects might form on Ti 3 C 2 T x nanosheets as a result of HF treatment, which provided preferential nucleation sites and Ti source for the growth of TiO 2 in presence of air at elevated temperatures. 41,52,53 Moreover, EDX mapping of a typical hybrid material in Fig. 2d shows the uniform distribution of Ti, Ni, Co, Fe and O elements, further indicating the successful preparation of the composite.…”

Electronic properties and applications of MXenes: a theoretical review

“…Experimentally, MXenes have already found applications as transparent conductors [18][19][20], field effect transistors [21], supercapacitors [22][23][24], Li ion batteries [25,26], electromagnetic interface shielders [27], fillers in polymeric composites [28], hybrid nanocompositites [29], purifiers [30,31], dual-responsive surfaces [32], suitable substrates for dyes [33], catalysts [34,35], promising materials for methane storage [36], and photocatalysts for hydrogen production [37], as well as being ceramic biomaterials with high photothermal conversion efficiency for cancer therapy [38]. Theoretically, many applications have been proposed for MXenes in electronic [39][40][41][42][43], magnetic [44][45][46][47][48], optical [49,50], thermoelectric [51][52][53][54][55][56], and sensing devices [57], as well as being new potential materials for catalytic and photocatalytic reactions [58][59][60]…”