Article (Scientific journals)
Single-atom nanozymes possessing robust multienzyme-mimetic catalytic properties for sensing of volatile alkaline gas
Song, Guangchun; Zheng, Xiaochun; Zhang, Zedong et al.
2024In Chemical Engineering Journal, p. 156835
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Keywords :
Single-atom nanozymes; Multienzyme-like; Nano-sensing detection; Volatile alkaline gas
Abstract :
[en] Volatile alkaline gases (VAGs) emitted from various sources, such as the food or chemical industry, pose potential harm to the natural environment and human health. Therefore, the development of a real-time, rapid, and cost-effective detection method is crucial. In this study, the enzyme-like catalytic types and activities of four different metal-based single-atom enzymes (Ga, Cu, Mn, and Zn SAzymes) were selected and evaluated. Among them, Ga SAzyme exhibited the most promising catalytic properties. Furthermore, the multienzyme catalytic properties of Ga SAzyme were utilized for the detection of ammonia, and it was found that its peroxidase-like (PODlike) activity showed a strong affinity for ammonia (Km = 0.05 mM). This detection strategy demonstrated high sensitivity, with a limit of detection (LOD) of 3.0 mM in the linear range of 0.01 - 0.05 M and 7.0 mM in the linear range of 0.075 - 0.25 M. Additionally, the method was characterized by fast response time (15 s) and low cost ($0.035 per sample). The proposed method holds great potential for the detection of VAGs from various sources in the future.
Disciplines :
Agriculture & agronomy
Chemistry
Author, co-author :
Song, Guangchun ;  Université de Liège - ULiège > TERRA Research Centre
Zheng, Xiaochun
Zhang, Zedong
Fauconnier, Marie-Laure  ;  Université de Liège - ULiège > TERRA Research Centre > Chemistry for Sustainable Food and Environmental Systems (CSFES)
Li, Cheng
Chen, Li
Zhang, Dequan
Language :
English
Title :
Single-atom nanozymes possessing robust multienzyme-mimetic catalytic properties for sensing of volatile alkaline gas
Publication date :
October 2024
Journal title :
Chemical Engineering Journal
ISSN :
1385-8947
eISSN :
1873-3212
Publisher :
Elsevier BV
Pages :
156835
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
CAAS - Chinese Academy of Agricultural Sciences
Funding text :
Chinese Academy of Agricultural Sciences Institute of Food Science and Technology
Available on ORBi :
since 21 November 2024

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