| 纳米微粒增敏的压电化学传感器 |
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| 引用本文： | 陈昕,张漪丽,司士辉.纳米微粒增敏的压电化学传感器[J].湖南师范大学学报(医学版),2004,1(1):44-46. |
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| 作者姓名： | 陈昕 张漪丽 司士辉 |
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| 作者单位： | 湖南师范大学医学院,长沙,410006;中南大学化学化工学院,长沙,10083 |
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| 基金项目： | 湖南师范大学医学院 2 0 0 2年重点资助项目 (2 0 0 2 0 4 ) |
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| 摘 要： | 以TiO2 纳米微粒膜作为固载 β 环糊精的基体 ,可以实现 β 环糊精在压电石英晶体表面的超容量固载 ,固载容量为 4 μg cm2 。β 环糊精 TiO2 纳米微粒膜修饰的压电传感器对苯、甲苯、硝基苯、氯苯、o 二甲苯、m 二甲苯、p 二甲苯气体检测时响应时间为 1min ,检测浓度下限可低至 4 0ng ml。该方法为提高压电化学传感器的灵敏度和缩短响应时间提供了一种新方法
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| 关 键 词： | TiO2纳米微粒 压电化学传感器 β-环糊精 |
| 文章编号： | 1673-016x(2004)01-0044-03 |
| 修稿时间： | 2004年9月25日 |
Improvement of Piezoelectric Crystal Chemical Sensor with Nanoporous Films |
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| CHEN Xin,ZHANG Yi-li,SI Shi-hui.Improvement of Piezoelectric Crystal Chemical Sensor with Nanoporous Films[J].Journal of Hunan Normal University(Medical Science),2004,1(1):44-46. |
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| Authors: | CHEN Xin ZHANG Yi-li SI Shi-hui |
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| Institution: | CHEN Xin 1,ZHANG Yi-li 1,SI Shi-hui 2 |
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| Abstract: | Immobilization of β-cyclodextrine onto nanoporous TiO 2 films was characterized by using piezoelectric crystal sensor and FT-IR technique. The amount of immobilized β-cyclodextrine on the surface of quartz crystal was estimated to be about 4 μg/cm 2.The present piezoelectric gas sensor is successfully employed to detect benzene, toluene, chlorobenzene, nitrobenzene, o-xylene, m-xylene and p-xylene vapors with the detection limit down to 40 ng/ml. Application of such coatings in piezoelectric crystal chemical sensors should undoubtedly lead to improvements in performance of sensors, such as the response time and sensitivity. |
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| Keywords: | nano/microporous TiO 2 films piezoelectric crystal sensor β-cyclodextrine |
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