Adsorption and gas-sensing performances of C2H2, C2H4, CO, H2 in transformer oil on Pt-doped MoTe2 monolayer

A DFT study

verfasst von
Tianyan Jiang, Wentao Zhang, Tao Zhang, Haoxiang Yuan, Maoqiang Bi, Xin Zhou
Abstract

In this paper, the DFT method is employed to analyze the sensing and adsorption performance intrinsic MoTe2 and Pt doped MoTe2 to the characteristic oil dissolved gases (C2H2, C2H4, CO, and H2). The value of binding energy demonstrates Pt atom prefer to be trapped at TMo site among TH, TMo, TTe, and TBr sites. Pt–MoTe2 depicts the excellent adsorption property to the four gases compared with MoTe2. Based on the change of band gap, the conductivity and sensitivity of Pt–MoTe2 decreases and increases after adsorption of four gases. The moderate recovery time reveals the higher gas-sensing and response of Pt–MoTe2 to C2H2 and C2H4 than to CO and H2. This paper provides theoretical guidance of potential application of a novel and high-performance gas sensor for online-monitoring the characteristic dissolved gases in transformer.

Organisationseinheit(en)
Fachgebiet Hochspannungstechnik und Asset Management (Schering-Institut)
Externe Organisation(en)
Chongqing Institute of Technology
Typ
Artikel
Journal
Physica E: Low-Dimensional Systems and Nanostructures
Band
146
ISSN
1386-9477
Publikationsdatum
01.2023
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Elektronische, optische und magnetische Materialien, Atom- und Molekularphysik sowie Optik, Physik der kondensierten Materie
Elektronische Version(en)
https://doi.org/10.1016/j.physe.2022.115568 (Zugang: Geschlossen)