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Issue:
Improvement of Piezoelectric Crystal Chemical Sensor with Nanoporous Films
Author(s):
CHEN Xin
,
ZHANG Yi-li
,
SI Shi-hui
Pages:
44
-
46
Year:
2004
Issue:
1
Journal:
JOURNAL OF HUNAN NORMAL UNIVERSITY(MEDICAL SCIENCES)
Keyword:
TiO2纳米微粒
;
压电化学传感器
;
β-环糊精
;
Abstract:
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1 min,检测浓度下限可低至40 ng/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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