작성일 : 14-11-05 17:56
| 연구단계 | 1단계 :1년차 | ||
| 논문제목(영문) | Structural, optical, and selective ethanol sensing properties of p-type semiconducting CoNb2O6 nanopowder. | ||
| 국내외구분 | 국외 | SCI여부 | SCI |
| 연구책임자역활 | 교신저자 | 논문기여율 | 30% |
| 주저자명 | C. Balamurugan | ||
| 교신저자명 | Lee DW | ||
| 공동저자명 | A.R. Maheswari | ||
| 게제년월일 | 2014-11-01 | ||
| ISSN | 0925-4005 | ||
| Impact Factor | 3.840 | ||
| 학술지명 | Sensor Actuat B-Chem | ||
| 서지사항 | 0집 / 205권 / 0호, 페이지(289 - 297) | ||
| 병기표기 | 단독 | ||
| Acknowledgement 기재여부 |
예
※ Acknowledgement가 기재된 논문만 연구과제의 성과로 인정. - 국문 표기 : "본 연구는 보건복지부 보건의료연구개발사업의 지원에 의하여 이루어진 것임. (HI13C1527)" - 영문 표기 : "This study was supported by a grant of the Korean Health Technology R&D Project, (HI13C1527) Ministry of Health & Welfare, Republic of Korea. " |
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| 요약초록문 (Abstract) 입력 |
This paper described the chemiresistive gas sensing characteristics of CoNb2O6 nanopowder prepared by a wet chemical technique. Prepared CoNb2O6 nanopowder was characterized using different analytical techniques. Thermal properties were studied using thermal analysis (TG/DTA), while purity and crystal structure were confirmed by X-ray powder diffraction (XRD). Morphology was studied using scanning electron microscopy (SEM). Transmission electron microscope (TEM) elemental confirmation was carried out by energy dispersive X-ray spectroscopy (EDX) and optical band gap from UV–Visible diffuse reflectance spectra (DRS). During these studies, it was observed that crystalline orthorhombic CoNb2O6 was obtained by heat treatment at 700 °C. The gas sensing behavior of CoNb2O6 nanopowder was analyzed by measuring the changes in resistance of the sensor material in the presence of each reducing gas, including ethanol, H2S, NH3, and LPG as a function of the operating temperatures, gas concentrations, and response time. CoNb2O6 based gas sensors showed p-type behavior and were able to detect ethanol vapor as low as several ppm and at a relatively low operating temperature of 130 °C. The sensors showed high sensitivity and repeatability, as well as fast response and recovery toward ethanol vapor. | ||
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