Ti3C2T (x) MXene anchoring semi-metallic selenium atoms: self-powered photoelectrochemical-type photodetector, hydrogen evolution, and gas-sensing applications
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43924187" target="_blank" >RIV/60461373:22310/22:43924187 - isvavai.cz</a>
Result on the web
<a href="https://iopscience.iop.org/article/10.1088/2053-1583/ac88e2/meta" target="_blank" >https://iopscience.iop.org/article/10.1088/2053-1583/ac88e2/meta</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/2053-1583/ac88e2" target="_blank" >10.1088/2053-1583/ac88e2</a>
Alternative languages
Result language
angličtina
Original language name
Ti3C2T (x) MXene anchoring semi-metallic selenium atoms: self-powered photoelectrochemical-type photodetector, hydrogen evolution, and gas-sensing applications
Original language description
MXenes have demonstrated substantial promise as photocatalysts and electrocatalysts for a variety of applications such as self-powered photoelectrochemical (PEC)-type photodetector, hydrogen evolution reaction (HER), and vapor sensing applications. However, their mechanism is still poorly figured out. Currently, Ti3C2T (x) MXene suffers from low photoresponsivity, high overpotential, and low sensitivity in such important applications. In order to develop catalytic activity and performances of those devices, modifications must be made to the structure of MXenes to enhance the separation of photogenerated charges, rate of the H+/e(-) couplings, and surface-active sites. These manipulations of MXenes heavily depend on understanding the mechanism of devices, appropriate modification elements, and the method of modification. This study for the first time reveals a facile solid-state annealing strategy for doping semi-metallic selenium (Se) atoms on Ti3C2T (x) MXene for self-powered PEC-type photodetector, HER, and vapor sensor applications. The suitable characteristics of Ti3C2T (x) make it an appropriate substrate to accommodate Se atoms. The well-designed Se-doped Ti3C2 heterojunction including some TiO2 cuboids could exhibit unprecedented photoresponsivity (up to 90 mA W-1) and detectivity (up to 2.0 x 10(8) cm Hz(1/2) W-1) for 420 nm light, HER (-0.7 V at 10 mA cm(-2)), and gas sensitivity (Z ' = 347 omega and Z '' = 150 omega, for ethanol) in comparison with the pristine Ti3C2T (x) nanosheets. The acquired promising results can be promoted with some other elements and also be examined in other electrolytes. Then, bring inspiration to the applications involving charge transfer, H+/e(-) couplings, and surface-active sites.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Result continuities
Project
<a href="/en/project/GC20-16124J" target="_blank" >GC20-16124J: Two-dimensional layered transition metal dichalcogenides/ nanostructured carbons composites for electrochemical energy storage and conversion</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
2D MATERIALS
ISSN
2053-1583
e-ISSN
—
Volume of the periodical
9
Issue of the periodical within the volume
4
Country of publishing house
GB - UNITED KINGDOM
Number of pages
12
Pages from-to
nestrankovano
UT code for WoS article
000847566700001
EID of the result in the Scopus database
2-s2.0-85137265373