| 학회 |
한국재료학회 |
| 학술대회 |
2015년 가을 (11/25 ~ 11/27, 부산 해운대그랜드호텔) |
| 권호 |
21권 2호 |
| 발표분야 |
E. 환경/센서 재료 |
| 제목 |
Pt 금속입자 기능화된 SnO2-ZnO 코어-셀 나노선의 톨루엔 가스 선택성 |
| 초록 |
In this paper, we report the exceptional toluene-sensing properties of SnO2−ZnO core−shell nanowires (C−S NWs) functionalized with Pt nanoparticles (NPs). A response of 279 was obtained for 100 ppb of toluene, and to the best of our knowledge, this is the highest toluene response to be reported in the literature. The SnO2−ZnO C−S NWs were synthesized via a twostep process: First, a networked core of SnO2 nanowires was prepared via vapor−liquid−solid growth on the patterned electrode layer. Second, the ZnO shell layers were created with atomic layer deposition. The electron-depleted region of the shell layer was further expanded by attaching Pt NPs, which were synthesized using γ-ray radiolysis, to the shell layer. In addition to the expansion of the electron-depleted region, the catalytic effect of Pt on toluene greatly improved the toluene-sensing performance of the C−S NWs. The extraordinary toluene-sensing ability of the Ptfunctionalized C−S NWs means they have great potential as the sensing platform in exhaled breath sensors to detect ppb-scale toluene. |
| 저자 |
김상섭1, 박유정2, 이재형2, 이준성2, 정일방2, 김재훈2
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| 소속 |
1인하대하교 신소재공학과, 2인하대 |
| 키워드 |
SnO<SUB>2</SUB>-ZnO; core-shell; Pt particle; gas sensor; disease diagnosis
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| E-Mail |
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