Design of ultrasensitive Ag-LaFeO3 methanol gas sensor based on quasi molecular imprinting technology

Scientific Reports
Qian RongQingju Liu

Abstract

An ultrasensitive methanol gas sensing device based on the quasi-molecular imprinting technology (quasi-MIT) is studied in this work. We applied the sol-gel method (ALS denotes Ag-LaFeO3 prepared by the sol-gel method) and combustion synthesis (ALC denotes Ag-LaFeO3 prepared by combustion synthesis) to prepare Ag-LaFeO3 based sensors. The morphologies and structures of the Ag-LaFeO3 materials were examined via various detection techniques. The ALSM and ALCM sensor (ALSM and ALCM denotes the devices prepared by coating the ALS and ALC materials with methanol, respectively) fabricated using the sol-gel method and combustion synthesis combined with quasi-MIT exhibit good gas sensing properties to methanol, in contrast with the two devices (ALSW and ALCW denote the devices prepared for coating the ALS and ALC materials with water, respectively) without the use of quasi-MIT. The results show that quasi-MIT introduced the target gas in the fabrication process of the device, playing an important role in the design of the ultrasensitive methanol gas sensor. The sensing response and the optimum working temperature of ALSM and ALCM gas sensor are 52.29 and 155 °C and 34.89 and 155 °C, respectively, for 5 ppm methanol, and the highest res...Continue Reading

References

Dec 13, 2012·Chemical Society Reviews·Thorsten WagnerMichael Tiemann
Sep 4, 2015·ACS Applied Materials & Interfaces·Linghui ZhuShengping Ruan
Sep 17, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Daniela Olea-RománSilvia E Castillo-Blum
Aug 11, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Sowmya PalimarNalini G Sundaram
Feb 10, 2017·Physical Chemistry Chemical Physics : PCCP·Yumin ZhangQingju Liu
Feb 23, 2017·ACS Applied Materials & Interfaces·Rawat JaisuttiYong-Hoon Kim
Mar 21, 2017·Biosensors & Bioelectronics·Dongmei LiZhiyuan Shen

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Methods Mentioned

BETA
X-ray
scanning
transmission electron microscopy
infrared spectroscopy

Software Mentioned

ALCM

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