H2S gas sensor based on integrated resonant dual-microcantilevers with high sensitivity and identification capability

被引：31

作者：

Tang, Lei ^{[1
,2
]}

Xu, Pengcheng ^{[2
]}

Li, Ming ^{[2
]}

Yu, Haitao ^{[2
]}

Li, Xinxin ^{[2
]}

机构：

[1] Shanghai Normal Univ, Coll Life & Environm Sci, Shanghai 200234, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Transducer Technol, Shanghai 200050, Peoples R China

来源：

CHINESE CHEMICAL LETTERS | 2020年 / 31卷 / 08期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

Gas sensor; Resonant microcantilever; N-doped nanoporous carbon; Selective detection; Hydrogen sulfide (H2S); HYDROGEN-SULFIDE; GRAVIMETRIC DETECTION; SENSING MATERIAL;

D O I：

10.1016/j.cclet.2020.01.018

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Detection of trace-level hydrogen sulfide (H2S) gas is of great importance whether in industrial production or disease diagnosis. This research presents a novel H2S gas sensor based on integrated resonant dual-microcantilevers which can identify and detect trace-level H2S in real-time. The sensor consists of two integrated resonant microcantilever sensors with different functions. One cantilever sensor can identify H2S by outputting positive frequency shift signals, while the other cantilever sensor will detect H2S as a normally used cantilever sensor with negative frequency shifts. Combined the two cantilever sensors, the proposed gas sensor can distinguish H2S from a variety of common gases, and the detection limit to H2S of the sensor is as sensitive as below 1 ppb. (C) 2020 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.

引用

页码：2155 / 2158

页数：4

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