| Author(s) |
Shin, Ka Yoon
Mirzaei, Ali
Kaewmaraya, Thanayut
Bang, Jae Hoon
Oum, Wansik
Kim, Eun Bi
Kim, Hyeong Min
Hussain, Tanveer
Kim, Sang Sub
Kim, Hyoun Woo
|
| Publication Date |
2024-10-15
|
| Abstract |
<p>Promising role of high-energy proton-irradiation (2 MeV) on graphene-SnO<sub>2</sub> hybrid nanocomposites for NO2 sensing were demonstrated. We synthesized hybrid nanocomposites by using SnO<sub>2</sub> nanoparticles and graphene flakes, being obtained from expandable graphite. NO2 gas sensing evaluations, with doses of 1 × 10<sup>12</sup>, 1 × 10<sup>13</sup>, and 1 × 10<sup>14</sup> ions/cm<sup>2</sup>, displayed that the sensing device irradiated with a dose of 1 × 10<sup>13</sup> ions/cm<sup>2</sup> exhibited the highest performance at 200 <sup>◦</sup>C. Generation of structural defects and graphene-SnO<sub>2</sub> 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 SnO<sub>2</sub>-related defects, indirectly affecting the sensing characteristics.</p>
|
| Citation |
Ceramics International, 50(20), p. 38228-38241
|
| ISSN |
1873-3956
0272-8842
|
| Link | |
| Language |
en
|
| Publisher |
Elsevier Ltd
|
| Title |
Proton-irradiation on graphene-SnO2 hybrid nanocomposites to boost NO2 gas sensing properties
|
| Type of document |
Journal Article
|
| Entity Type |
Publication
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