Two-dimensional MXene/A-TiO2 composite with unprecedented catalytic activation for sodium alanate

Vortex Fluidic Mediated Synthesis of TiO2 Nanoparticle/MXene Composites

“…[30,[68][69] Figure 6(d) provides the X-ray diffraction data (XRD) for as prepared MXene showing the expected 2θ peaks at 29.4°, 40.6°, 42.4°and 72.4°(Co K α λ = 17889 Å) for the crystal structure of Ti 2 CT x MXene which has hexagonal P63/mmc space group and a lattice constant a � 0.3 nm. [70][71] Post VFD processing (after oxidation and fabrication of MXene composites), the XRD of the collected and retained material had peaks corresponding to MXene, [28] with additional peaks for anatase at 2θ 29.6°(101), 44.3°(004), 63.7°(105), 64.9°(211), 74.1 (204) and 83.8°( 215). [20,[72][73] The peak at 29.6°overlaps with a peak for MXene.…”

“…The processing generates NPs of fragmented MXene which co-assemble with anatase NPs in forming novel spheroidal TiO 2 NPs/MXenes composite material, which is stable for extended periods. We note that the ready availability of TiO 2 NPs/MXene composites using a VFD offers potential for applications requiring biocompatibility for enzymes, [22] use in modified glassy carbon electrodes for H 2 O 2 reduction, [25] nitrite detection, [26] glucose and sodium alanate, [28] Li-ion battery anodes [29] and as photocatalyst. [30] Experimental Section Materials Ti 2 AlC powder precursor was obtained commercially (KANTHAL, Maxthal 211 Ti 2 AlC).…”

“…[30] Thermal methods have been used to oxidize MXene to TiO 2 or TiO 2 NPs/MXene. [28,[30][31] with H 2 O 2 also effective in preparing the same material. [29] Herein we report the oxidation of MXene (Ti 2 C) in 30% H 2 O 2 in gaining access to TiO 2 NPs/MXene composite materials, which encompasses exfoliation with surface oxidation, fragmentation of the 2D material, and oxidation of the fragmented material, using a vortex fluidic device (VFD).…”

“…More specifically, TiO 2 nanoparticle (NP)/MXene composites feature in rendering MXene biocompatible for enzyme attachment, enhancing the efficiency of MXene modified glassy carbon electrodes for H 2 O 2 reduction, nitrite detection, low detection limits of glucose and sodium alanate, Li‐ion battery anodes and photocatalysis . Thermal methods have been used to oxidize MXene to TiO 2 or TiO 2 NPs/MXene . with H 2 O 2 also effective in preparing the same material .…”

“…[19] In addition, MXenes decorated with TiO 2 quantum dots (QDs) feature in LiÀ S batteries, [20] MXene-Cu 2 O catalyses the thermal decomposition of ammonium perchlorate, [21] MXene-enzyme feature in electrochemical biosensors, [22] MXenes-CNTs improve electrochemical performance, [8] and MXene-Pt nanoparticles have sensing application [23] with others for determining ion exchange capacity. [24] More specifically, TiO 2 nanoparticle (NP)/ MXene composites feature in rendering MXene biocompatible for enzyme attachment, [22] enhancing the efficiency of MXene modified glassy carbon electrodes for H 2 O 2 reduction, [25] nitrite detection, [26] low detection limits of glucose [27] and sodium alanate, [28] Li-ion battery anodes [29] and photocatalysis. [30] Thermal methods have been used to oxidize MXene to TiO 2 or TiO 2 NPs/MXene.…”