A Study of two Dimensional Metal Carbide MXene Ti3C2 Synthesis, characterization conductivity and radiation properties

Zarrul Azwan Mohd Rasid,Muhammad Firdaus Mohd Nazeri,Andrei Victor Sandu,Syahrul Affandi Saidi,Mohd Firdaus Omar,Mustafa Al Bakri Abdullah Mohd

doi:10.37358/mp.19.3.5244

Abstract

Since the discovery of exceptional properties of graphene, a lot of researchers focused on the discovery of another nobel two-dimensional (2D) materials. Recently, an elegant exfoliation approaches was proposed as a method to synthesis a new family of transitional 2D metal carbide or nitrades of MXene from a layered MAX phase. A layered MAX phase of Ti3AlC2 was synthesized through pressureless sintering (PLS) the initial powder of 3TiH2/1.1Al/2C without preliminary dehydrogenation under argon atmosphere at 1350 oC. An elegant exfoliation approach was used to eliminates Al from its precursor to form a layered-structure of Ti3C2. In this study, thermal conductivity of MAX phase and MXene were studied using absolute axial heat flow method to measure the abilities sample to conduct heat and the data was collected using Picolog 1216 Data Logger. Electrical conductivity of these two materials was also compared by using two-point probe, due to its simplicity. Radiation properties of 2D MXene Ti3C2 was studied by using an established radon monitor, placed in closed, fabricated container. Morphological and structural properties of this 2D material were also studied using an established FESEM and XRD apparatus. SEM images shows two types of morphology which is a layer of Ti3C2 and the agglomerates Al2O3 with graphite. XRD pattern reveals three phases in this material which is a rhombohedral Al2O3, rhombohedral graphite and rhombohedral Ti3C2 phases, respectively. Thermal and electrical conductivity of MXene were proven higher than MAX phase. Radon concentration for this material for five consecutive days explains the radiation level of this material which is under the suggestion value from US Environmental Protection Agency (EPA). From this finding, it is can conveniently say that the MXene material can be promising material for electronic application.

Highlights

Method to measure the abilities sample to conduct heat and the data was collected using Picolog 1216 Data
SEM images shows two types of morphology which awisnhadiclaehyleeiscratorrifhcTaoil3mCcb2oaonnhddeudtchrtaeivlaiAtgyl2gOolof3,mMrheXoremantbeesowhAeel2drOer3apwl griortahvpeghnriathepihaginhtede.rrXhthRoamDnpbMaothAteeXrdnrparhleaTvsie3eCa.l2sRptahhdaroesenesp,crhoeansscpeeesncittnirvatehtiloiys.nmTfhoaertremtrhiaaisll material for five consecutive days explains the radiation level of this material which is under the suggestion value from US Environmental Protection Agency (EPA)
It can be concluded that the MAX phase and MXene was susscessfully sunthesized using an elegant exfoliation approaches

Summary

Synthesis of MXene

%T,iH552 0(9m9e%sh, )3w25asmwesehig)h, eAdl according to the stoichiometry ratio of 3:1.1:2, mixed by using a planetary ball mill for 60 hours. The resulted mixture was placed in centrifuge tube and centrifugation process was run at 5000 rpm for 7 minutes. Heat was supplied to one side of the samples while a fully enclosed liquid cooling system was used on the other side creating a temperature gradient. The obtained results used to plot the graph of power (Q) against temperature difference (∆T). The slope of this graph was future implemented into the Eq 1 to determine the thermal conductivity of the sample. Where, k is the thermal conductivity (W/mK), ∆T is the differences in temperature (oC), t is the specimen thickness (m), Q is the power (W), A is the specimen area (m2)

Thermal conductivity

Chracterization of MAX phase

Radiation properties

Conclusions