Highly sensitive and selective room-temperature formaldehyde sensors using hollow TiO2 microspheres
发表时间：2019-03-09
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- 论文类型：
- 期刊论文
- 第一作者：
- Li, Xiaogan
- 通讯作者：
- Li, XG (reprint author), Dalian Univ Technol, Inst Sensing Technol, Sch Elect Sci & Technol, Dalian, Peoples R China.
- 合写作者：
- Li, Xiaoxin,Wang, Jing,Lin, Shiwei
- 发表时间：
- 2015-11-01
- 发表刊物：
- SENSORS AND ACTUATORS B-CHEMICAL
- 收录刊物：
- SCIE、EI、Scopus
- 文献类型：
- J
- 卷号：
- 219
- 页面范围：
- 158-163
- ISSN号：
- 0925-4005
- 关键字：
- Hollow TiO(2)microspheres; Room-temperature chemoresistive gas sensors; Formaldehyde; UV illumination
- 摘要：
- Room temperature chemoresistive gas sensors could significantly decrease the demand of power consumption and are thus highly desirable in self-sustained nanosensors. Here we report that chemoresistive sensors fabricated from mesoporous hollow TiO2 microspheres show high sensitivity and selectivity to sub-ppm level of formaldehyde at room temperature with the assistance of low powered UV LED photon energy (2.5 mW). The sensor indicated excellent selectivity to other possible interferrents such as methanol, ethanol, acetone, ammonia and methylbenzene at low concentrations. These sensors have a much faster response (similar to 40 s)/recovery (similar to 50 s) characteristic, which significantly surpass the sensing properties shown by other types of nanostructured TiO2 reported in literature. (C) 2015 Elsevier B.V. All rights reserved.
- 是否译文：
- 否
