| 학회 | 한국재료학회 |
| 학술대회 | 2021년 가을 (11/24 ~ 11/26, 경주 라한호텔) |
| 권호 | 27권 2호 |
| 발표분야 | E. 환경/센서 재료 분과 |
| 제목 | Rationally Designed TiO2 Nano-waffles for Highly Sensitive Acetone Sensor |
| 초록 | Abstract Over the past decades, the importance of indoor air quality monitoring has largely grown because of the lengthened time of human activities performed inside buildings, such as exercising, manufacturing, working, learning, etc. Meanwhile, the indoor atmosphere can be easily exposed to the volatile organic compounds (VOCs) released from building products including paints, varnishes, solvents, and preservatives, which cause adverse health effects such as the sick building syndrome. Therefore, it is easily expected that the health conditions of modern day people are mostly affected by the indoor environment; requiring the development of high performance sensors for instant detection of hazardous airborne pollutants. In this study, we report the application of highly porous and periodic 3-dimensional (3D) TiO2 nanostructures in the extremely sensitive and selective gas sensor for CH3COCH3 detection. The high performance was achieved owing to the high accessibility of target gas molecules to the effective gas sensing area, combined with precisely designed inter-necks of 3D TiO2 nanostructures for sensitive electrical modulation upon gas molecule adsorption and desorption. The response of highly porous and periodic 3-dimensional (3D) TiO2 nanostructures is 299 with an extremely fast response time of less than 1s, upon exposure to 50 ppm CH3COCH3. We believe that the systematic approaches to utilize both inner and outer surface of 3D nanostructured sensing materials can provide highly promising perspectives to advance the development of semiconducting gas sensors for the next-generation indoor environment monitoring system. Keywords: Gas Sensor, Soft-templating Method, Metal Oxide, Nanostructure, TiO2 |
| 저자 | 김현재, 홍준영, 박시형, 강주현, 오현진, 고하은, 박수완, 심영석 |
| 소속 | 신라대 |
| 키워드 | Gas Sensor; Soft-templating Method; Metal Oxide; Nanostructure; TiO<SUB>2</SUB> |
