Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/63780
Title: Proton-irradiation on graphene-SnO2 hybrid nanocomposites to boost NO2 gas sensing properties
Contributor(s): Shin, Ka Yoon (author); Mirzaei, Ali (author); Kaewmaraya, Thanayut (author); Bang, Jae Hoon (author); Oum, Wansik (author); Kim, Eun Bi (author); Kim, Hyeong Min (author); Hussain, Tanveer  (author)orcid ; Kim, Sang Sub (author); Kim, Hyoun Woo (author)
Publication Date: 2024-10-15
DOI: 10.1016/j.ceramint.2024.07.186
Handle Link: https://hdl.handle.net/1959.11/63780
Abstract: 

Promising role of high-energy proton-irradiation (2 MeV) on graphene-SnO2 hybrid nanocomposites for NO2 sensing were demonstrated. We synthesized hybrid nanocomposites by using SnO2 nanoparticles and graphene flakes, being obtained from expandable graphite. NO2 gas sensing evaluations, with doses of 1 × 1012, 1 × 1013, and 1 × 1014 ions/cm2, displayed that the sensing device irradiated with a dose of 1 × 1013 ions/cm2 exhibited the highest performance at 200 C. Generation of structural defects and graphene-SnO2 heterojunctions were accounted for sensing enhancement. Calculations in regard to density functional theory revealed that the presence of defects enhanced the NO2 sensing of the optimized sensor. Besides considering defects in the graphene, we calculated the generation of SnO2-related defects, indirectly affecting the sensing characteristics.

Publication Type: Journal Article
Source of Publication: Ceramics International, 50(20), p. 38228-38241
Publisher: Elsevier Ltd
Place of Publication: United Kingdom
ISSN: 1873-3956
0272-8842
Fields of Research (FoR) 2020: 340701 Computational chemistry
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Appears in Collections:Journal Article
School of Science and Technology

Files in This Item:
1 files
File SizeFormat 
Show full item record
Google Media

Google ScholarTM

Check

Altmetric


Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.