Quartz crystal microbalance (QCM) sensor for CH3SH gas by using polyelectrolyte-coated sol-gel film

Masashi Kikuchi; Seimei Shiratori

doi:10.1016/j.snb.2004.12.122

Quartz crystal microbalance (QCM) sensor for CH₃SH gas by using polyelectrolyte-coated sol-gel film

Masashi Kikuchi, Seimei Shiratori

Research output: Contribution to journal › Article › peer-review

42 Citations (Scopus)

Abstract

A new structure of sensing film for QCM sensor electrode was investigated. Gas-sensing device for toxic gases requires high sensor sensitivity and quick response. Increasing the surface area of sensing film was effective to improve the sensor sensitivity and response speed of QCM sensors, however it is difficult to increase the surface area of polymeric film. In this paper, Al ₂O₃ porous film was coated on QCM substrate by sol-gel method between the QCM electrode and polymeric layer in order to increase the surface area of polymeric layer. By using this manner, polymeric sensing films with high porosity can be fabricated without high-temperature treatment. The sensor was evaluated for the detection of methyl mercaptan (CH₃SH) by using poly(ethylene imine) (PEI) as polymeric layer. The sensor with Al ₂O₃ porous layer showed high sensitivity and quick response rather than the sensor without the inorganic layer. The Al ₂O₃ layer worked for increasing the surface area of polyelectrolyte layer which resulted in the increasing of the sensor sensitivity.

Original language	English
Pages (from-to)	564-571
Number of pages	8
Journal	Sensors and Actuators, B: Chemical
Volume	108
Issue number	1-2 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.snb.2004.12.122
Publication status	Published - 2005 Jul 22
Externally published	Yes

Keywords

AlO
CHSH
Gas sensor
Layer-by-layer self-assembly
Poly(ethylene imine)
Quartz crystal microbalance
Sol-gel method

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

Access to Document

10.1016/j.snb.2004.12.122

Cite this

@article{902034fe77804a2f910f88a5a5e7080f,

title = "Quartz crystal microbalance (QCM) sensor for CH3SH gas by using polyelectrolyte-coated sol-gel film",

abstract = "A new structure of sensing film for QCM sensor electrode was investigated. Gas-sensing device for toxic gases requires high sensor sensitivity and quick response. Increasing the surface area of sensing film was effective to improve the sensor sensitivity and response speed of QCM sensors, however it is difficult to increase the surface area of polymeric film. In this paper, Al 2O3 porous film was coated on QCM substrate by sol-gel method between the QCM electrode and polymeric layer in order to increase the surface area of polymeric layer. By using this manner, polymeric sensing films with high porosity can be fabricated without high-temperature treatment. The sensor was evaluated for the detection of methyl mercaptan (CH3SH) by using poly(ethylene imine) (PEI) as polymeric layer. The sensor with Al 2O3 porous layer showed high sensitivity and quick response rather than the sensor without the inorganic layer. The Al 2O3 layer worked for increasing the surface area of polyelectrolyte layer which resulted in the increasing of the sensor sensitivity.",

keywords = "AlO, CHSH, Gas sensor, Layer-by-layer self-assembly, Poly(ethylene imine), Quartz crystal microbalance, Sol-gel method",

author = "Masashi Kikuchi and Seimei Shiratori",

note = "Funding Information: This work was partly supported by Keio Life-Conjugated Chemistry (LCC) Program of Center of Excellence (COE) Research Project in the 21st century sponsored by Japanese Ministry of Education, Science, Culture, and Sports, Grant-in-Aid for JSPS fellows. ",

year = "2005",

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doi = "10.1016/j.snb.2004.12.122",

language = "English",

volume = "108",

pages = "564--571",

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T1 - Quartz crystal microbalance (QCM) sensor for CH3SH gas by using polyelectrolyte-coated sol-gel film

AU - Kikuchi, Masashi

AU - Shiratori, Seimei

N1 - Funding Information: This work was partly supported by Keio Life-Conjugated Chemistry (LCC) Program of Center of Excellence (COE) Research Project in the 21st century sponsored by Japanese Ministry of Education, Science, Culture, and Sports, Grant-in-Aid for JSPS fellows.

PY - 2005/7/22

Y1 - 2005/7/22

N2 - A new structure of sensing film for QCM sensor electrode was investigated. Gas-sensing device for toxic gases requires high sensor sensitivity and quick response. Increasing the surface area of sensing film was effective to improve the sensor sensitivity and response speed of QCM sensors, however it is difficult to increase the surface area of polymeric film. In this paper, Al 2O3 porous film was coated on QCM substrate by sol-gel method between the QCM electrode and polymeric layer in order to increase the surface area of polymeric layer. By using this manner, polymeric sensing films with high porosity can be fabricated without high-temperature treatment. The sensor was evaluated for the detection of methyl mercaptan (CH3SH) by using poly(ethylene imine) (PEI) as polymeric layer. The sensor with Al 2O3 porous layer showed high sensitivity and quick response rather than the sensor without the inorganic layer. The Al 2O3 layer worked for increasing the surface area of polyelectrolyte layer which resulted in the increasing of the sensor sensitivity.

AB - A new structure of sensing film for QCM sensor electrode was investigated. Gas-sensing device for toxic gases requires high sensor sensitivity and quick response. Increasing the surface area of sensing film was effective to improve the sensor sensitivity and response speed of QCM sensors, however it is difficult to increase the surface area of polymeric film. In this paper, Al 2O3 porous film was coated on QCM substrate by sol-gel method between the QCM electrode and polymeric layer in order to increase the surface area of polymeric layer. By using this manner, polymeric sensing films with high porosity can be fabricated without high-temperature treatment. The sensor was evaluated for the detection of methyl mercaptan (CH3SH) by using poly(ethylene imine) (PEI) as polymeric layer. The sensor with Al 2O3 porous layer showed high sensitivity and quick response rather than the sensor without the inorganic layer. The Al 2O3 layer worked for increasing the surface area of polyelectrolyte layer which resulted in the increasing of the sensor sensitivity.

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KW - CHSH

KW - Gas sensor

KW - Layer-by-layer self-assembly

KW - Poly(ethylene imine)

KW - Quartz crystal microbalance

KW - Sol-gel method

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