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창의적인 신지식 창출과 산업계와의 협력적 네트워크 구축

HIGHLY CITED PAPERS (HCP)

  • 전임교원이 최근 5년간 출판한 논문 중, 연도별 카테고리별 피인용 상위 1%에 달성된 논문
  • 매월 1회 업데이트
SCI-E Article
Design of highly porous SnO2-CuO nanotubes for enhancing H2S gas sensor performance
Author
Park, Kee-Ryung; Cho, Hong-Baek; Lee, Jimin; Song, Yoseb; Kim, Woo-Byoung; Choa, Yong-Ho
Corresponding Author Info
Prof. Choa yong-Ho
Professor
E-mail
이메일 choa15@hanyang.ac.kr
Document Type
Source
SENSORS AND ACTUATORS B-CHEMICAL Sensors & Actuators: B. Chemical 302 (2020) 127179
Times Cited
125 (2023.06.12)
External Information
10.1016/j.snb.2019.127179
Abstract
- 9월/10월 2020부로, 이 인용 빈도가 높은 논문의 인용 횟수가 분야와 출판 연도에 대해 인용 빈도가 높은 임계값을 기반으로 Chemistry 관련 학술 분야에서 상위 1%에 올랐습니다.
- JAN 1 2020
<Abstract>
Highly porous SnO2-CuO hollow nanofiber mats were synthesized by electrospinning combined with thermal processing for high performance H2S gas sensing applications. The porous morphology generated in the one-dimensional (1-D) nanocomposite led to an improvement in surface-to-adsorbate molecule interactions. Our novel concept lies in fabrication of SnO2-CuO with a 1-D highly porous structure by electrospinning coupled with generation of hollow nanostructures drawing on nanofiber-to-nanotube transformation affected by Kirkendall effect during thermal processing. The fibrous structure was synthesized by electrospinning with mixed solution of Sn and Cu precursors, which then underwent heat treatment under various temperature conditions. The hollow structures were generated based on the different diffusion rates between SnO2-CuO and Sn/Cu. The SnO2-CuO nanotubes have low operating temperatures and high H2S sensing performance. The increased surface area for detecting H2S resulted in great enhancement of the response (R-a/R-g = 1395) and a very fast response time of 5.27 s with a stable recovery time to a low concentration of H2S to 5 ppm at 200 degrees C. The porous SnO2-CuO hollow nanofiber gas sensor proved to be a promising candidate for gas sensor systems due to increased surface area with metal oxide catalyst. The mechanisms involved in enhancement of gas response and extended applications are also discussed
Web of Science Categories
Chemistry; Electrochemistry; Instruments & Instrumentation
Funding
Nano.Material Technology Development Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [2016M3A7B4900044]; Technology Innovation Program - Ministry of Trade, Industry and Energy (MOTIE, Korea) [
Language
English
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