Preprint Article Version 2 Preserved in Portico This version is not peer-reviewed

Integrated Smart Gas Tracking Device with Artificially Tailored Selectivity for Real-Time Monitoring Food Freshness

Yuli Xu
,
Zicheng Liu
,
Jingren Lin
,
Jintao Zhao
,
Nguyen Duc Hoa
,
Nguyen Van Hieu
,
Alexander A. Ganeev
,
Victoria Chuchina
ORCID logo ,
Abolghasem Jouyban
ORCID logo ,
Daxiang Cui
,
Ying Wang
* ,
Han Jin
*
Version 1 : Received: 23 August 2023 / Approved: 24 August 2023 / Online: 25 August 2023 (04:59:35 CEST)
Version 2 : Received: 19 September 2023 / Approved: 19 September 2023 / Online: 20 September 2023 (09:53:04 CEST)

A peer-reviewed article of this Preprint also exists.

Xu, Y.; Liu, Z.; Lin, J.; Zhao, J.; Hoa, N.D.; Hieu, N.V.; Ganeev, A.A.; Chuchina, V.; Jouyban, A.; Cui, D.; Wang, Y.; Jin, H. Integrated Smart Gas Tracking Device with Artificially Tailored Selectivity for Real-Time Monitoring Food Freshness. Sensors 2023, 23, 8109. Xu, Y.; Liu, Z.; Lin, J.; Zhao, J.; Hoa, N.D.; Hieu, N.V.; Ganeev, A.A.; Chuchina, V.; Jouyban, A.; Cui, D.; Wang, Y.; Jin, H. Integrated Smart Gas Tracking Device with Artificially Tailored Selectivity for Real-Time Monitoring Food Freshness. Sensors 2023, 23, 8109.

Abstract

The real-time monitoring of food freshness in refrigerators is of significant importance in detecting potential food spoiling and preventing serious health issues. One method that is commonly reported and has received substantial attention is the discrimination of food freshness by the tracking of volatile molecules. Nevertheless, the ambient environment of low temperature (normally below 4oC) and high humidity (90% R.H.) as well as poor selectivity in sensing gas species remain the challenge. In this research, an integrated smart gas-tracking device is designed and fabricated. By applying pump voltage on the yttria-stabilized zirconia (YSZ) membrane, the oxygen concentration in the testing chamber can be manually tailored. Due to the working principle of the sensor following the mixed potential behavior, distinct differences in sensitivity and selectivity are observed for the sensor that operated at different oxygen concentrations. Typically, the sensor gives satisfactory selectivity to H2S, NH3, and C2H5OH at the oxygen concentrations of 10%, 30%, and 40%, respectively. In addition, an acceptable response/recovery rate (within 24 s) is also confirmed. Finally, a refrigerator prototype that includes the smart gas sensor is built, and satisfactory performance in discriminating food freshness status of fresh or semi-fresh is verified for the proposed refrigerator prototype. In conclusion, these aforementioned promising results suggest that the proposed integrated smart gas sensor could be a potential candidate for alarming food spoilage.

Keywords

artificially tailored selectivity; smart gas sensor; yttria-stabilized zirconia (YSZ); volatile compounds; food freshness

Subject

Chemistry and Materials Science, Electrochemistry

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Comments (1)

Comment 1
Received: 20 September 2023
Commenter: xu yuli
Commenter's Conflict of Interests: Author
Comment: some of the spelling and grammar errors in the text have been corrected and some of the statements have been further explained.
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