Heterovalent-doping-induced ultrasensitive and highly exclusive ethylene sensor: Application to crop quality inspection

Ethylene; Gas sensor; Heteroatom dopant; Highly selective; Rice mildew; Room temperature; Crop quality; Ethylene sensors; Gas-sensors; Heteroatoms; Heterovalent doping; Sensor applications; Ultrasensitive; Chemistry (all); Environmental Chemistry; Chemical Engineering (all); Industrial and Manufacturing Engineering

Abstract :

[en] A promising ethylene sensor based on Sb2MoO6 (SMO) with a permeable lamellar structure and tunable W dopants is proposed. The optimal 5 mol% W-doped SMO featuring atomically distributed heterovalent doping sites enables the ideal combination of high response (121.26/2.6 for 10/0.5 ppm), short response/recovery time (180 s/54 s for 10 ppm), low limit of detection (LoD) (23.18 ppb), excellent selectivity, good long-term stability (45 days), and robust performance in high humidity (LoD of 31.5 ppb at 80 % relative humidity). The rich W4+ doping-induced active sites are primarily responsible for the strengthened gas-sensing performances. Theoretical simulations reveal that W doping modulates the SMO lattice through substitutional and interstitial mechanisms, optimizing adsorption energy and charge transfer between ethylene and Mo sites, thereby resolving the trade-off between high response and recovery speed. Furthermore, the real-world application in detecting and differentiating moldy rice across storage periods underscores its potential for on-site quality monitoring in the grain industry. This work highlights the significant role of heteroatom doping in tailoring material properties, positioning W-doped SMO as a highly effective gas-sensing material for agricultural and environmental applications.

Disciplines :

Chemistry

Author, co-author :

Liu, Kewei; College of Mechanical Engineering, Yangzhou University, Yangzhou, China ; Service de Science des Matériaux, Faculté Polytechnique, Université de Mons, Mons, Belgium

Zheng, Zichen ; Université de Mons - UMONS > Faculté des Sciences > Service de Chimie des Interactions Plasma-Surface ; College of Mechanical Engineering, Yangzhou University, Yangzhou, China

Zhou, Yiwen; College of Mechanical Engineering, Yangzhou University, Yangzhou, China

Bittencourt, Carla ; Université de Mons - UMONS > Faculté des Sciences > Service de Chimie des Interactions Plasma-Surface

Debliquy, Marc ; Université de Mons - UMONS > Faculté Polytechnique > Service de Science des Matériaux

Liu, Qiaoquan; Key Laboratories of Crop Genetics and Physiology of Jiangsu Province, Co-Innovation Center for Modern Production Technology of Grain Crops of Jiangsu, Yangzhou University, Yangzhou, China

Zhang, Chao ; College of Mechanical Engineering, Yangzhou University, Yangzhou, China

Language :

English

Title :

Heterovalent-doping-induced ultrasensitive and highly exclusive ethylene sensor: Application to crop quality inspection

Publication date :

15 March 2025

Journal title :

Chemical Engineering Journal

ISSN :

1385-8947

eISSN :

1873-3212

Publisher :

Elsevier B.V.

Volume :

508

Pages :

161075

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

https://api.elsevier.com/content/article/PII:S1385894725018960?httpAccept=text/xml

Research unit :

S882 - Chimie des Interactions Plasma-Surface

Research institute :

Research Institute for Materials Science and Engineering

Funders :

China Scholarship Council
Outstanding Youth Foundation of Jiangsu Province
Science and Technology Plan Project of Wenzhou Municipality

Funding text :

This work was supported by the Outstanding Youth Foundation of Jiangsu Province of China under Grant No. (Grant No. BK20211548 ), the Yangzhou Science and Technology Plan Project (Grant No. YZ2023246 ) and China Scholarship Council (Grant No. 202208320269 ).

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