The preparation route and final form of V-MXenes override the effect of the O/F ratio on their magnetic properties

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10480253" target="_blank" >RIV/00216208:11320/24:10480253 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/24:10480253

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=l.jxtXw_z6" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=l.jxtXw_z6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d4tc00132j" target="_blank" >10.1039/d4tc00132j</a>

Result language

angličtina

Original language name

The preparation route and final form of V-MXenes override the effect of the O/F ratio on their magnetic properties

Original language description

Transition metal carbides and nitrides (MXenes) show a high potential for electrochemical energy storage in batteries and supercapacitors and for electrocatalysis. Their excellent electronic and magnetic characteristics have been highlighted in several theoretical studies. However, experimental research on MXenes is yet to confirm their predicted properties as candidates for controllable magnetic 2D materials. Here, we report our theoretical and experimental study of V(2)CT(x) MXenes (T = O, OH, F), providing key insights into their magnetism. Based on our density functional theory (DFT) analysis, we predicted ferromagnetic (FM) and antiferromagnetic (AFM) states of V(2)CT(x), which are determined by the O/F ratio of surface functional groups. Accordingly, we prepared V(2)CT(x) MXenes in the form of multilayered powders and thin films with different O/F ratios. No experimental evidence of FM or AFM properties was found in any material. Nevertheless, powders and films with almost identical chemical compositions (in terms of O/F ratio) displayed different magnetic properties, whereas films with disparate chemical compositions revealed a similar magnetic character. Therefore, the preparation route and form of the final V(2)CT(x) material override the effect of the O/F ratio, which is often overestimated in theoretical studies. Moreover, these findings underscore the importance of preparing MXene materials to experimentally confirm their theoretically predicted properties. A theoretical and experimental study of V(2)CT(x) provides key insights into its magnetism. Chemical analysis and magnetic measurements highlight the importance of the preparation pathway rather than the actual chemical composition and form of V(2)CT(x).

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10403 - Physical chemistry

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Materials Chemistry C

ISSN

2050-7526

e-ISSN

2050-7534

Volume of the periodical

12

Issue of the periodical within the volume

15

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

5431-5441

UT code for WoS article

001188296800001

EID of the result in the Scopus database

2-s2.0-85188674757