Article (Scientific journals)
Highly sensitive and selective gas sensors based on 2D/3D Bi2MoO6 micro-nano composites for trimethylamine biomarker detection
Wu, Kaidi; He, Xiaoxi; Ly, Ahmadou et al.
2023In Applied Surface Science, 629, p. 157443
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Keywords :
2D/3D heterojunction; Aurivillius oxide; Biomarker detection; Gas sensor; Oxygen vacancy; 2d/3d heterojunction; 3D heterojunctions; Aurivillius; Fish freshness; Gas-sensors; Micro/nano; Selective gas sensors; Trimethyl amine; Condensed Matter Physics; Surfaces and Interfaces; Surfaces, Coatings and Films; General Physics and Astronomy; General Chemistry
Abstract :
[en] Metal oxide semiconductor based gas sensors have been verified to be an effective way for food quality detection. However, the high operating temperature, insufficient sensitivity, and selectivity limit their wide application. Herein, one simplest Aurivillius oxide, Bi2MoO6 microspheres and a series of exfoliated g-C3N4/Bi2MoO6 hetero-composites were developed using a facile solvothermal route, which are used to detect trimethylamine (TMA, a volatile biomarker of fish freshness) at 22 °C. The introduction of E-g-C3N4 contributes to modulating the grain size of Bi2MoO6 and tuning the Bi/Mo cations valence states, thus improving the surface reactivity and electron transfer efficiency. Benefiting from the synergetic engineering of 2D/3D micro-nanostructure, crystal defects, and well-defined n-n heterojunctions, 1 wt% E-g-C3N4/Bi2MoO6 attained superior TMA sensing performance at 22 °C, including the highest response (Ra/Rg = 10.6 @ 20 ppm) and accelerated response/recovery speed, fine selectivity, and low detection limit (1.3 ppm), which is far satisfied with the detection requirement. Furthermore, the comprehensive evaluation based on the fish color and tissue state, sensing characteristics, PCA, and pH testing results reveal the fabricated TMA sensor can achieve rapid and non-destructive fish freshness detection. This work provides insights into designing low-power consumption chemiresistive gas sensors and devices with valid practicality.
Disciplines :
Materials science & engineering
Author, co-author :
Wu, Kaidi;  College of Mechanical Engineering, Yangzhou University, Yangzhou, China ; Service de Science des Matériaux, Faculté Polytechnique, Université de Mons, Mons, Belgium
He, Xiaoxi;  College of Mechanical Engineering, Yangzhou University, Yangzhou, China
Ly, Ahmadou ;  Université de Mons - UMONS > Unités externes > Materia Nova ASBL ; Material Science Department, Materia Nova ASBL, Mons, Belgium
Lahem, Driss ;  Université de Mons - UMONS > Unités externes > Materia Nova ASBL ; Material Science Department, Materia Nova ASBL, Mons, Belgium
Debliquy, Marc ;  Université de Mons - UMONS > Faculté Polytechnique > Service de Science des Matériaux
Zhang, Chao;  College of Mechanical Engineering, Yangzhou University, Yangzhou, China
Language :
English
Title :
Highly sensitive and selective gas sensors based on 2D/3D Bi2MoO6 micro-nano composites for trimethylamine biomarker detection
Publication date :
30 August 2023
Journal title :
Applied Surface Science
ISSN :
0169-4332
eISSN :
1873-5584
Publisher :
Elsevier B.V.
Volume :
629
Pages :
157443
Peer reviewed :
Peer Reviewed verified by ORBi
Research unit :
F502 - Science des Matériaux
Research institute :
R400 - Institut de Recherche en Science et Ingénierie des Matériaux
Funding text :
This work is supported by the Outstanding Youth Foundation of Jiangsu Province of China under Grant No. BK20211548, the Natural Science Foundation of China under Grant No. 51872254, and the Excellent Doctoral Dissertation Fund of Yangzhou University (2021_06). D. Lahem & A. Ly would like to thank the Walloon Region of Belgium who financially supported this work through the Interreg V France-Wallonie-Vlaanderen program, under PATHACOV project (No.1.1.297) and the program Win4Collective through the SensoPro project.
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