Article (Scientific journals)
Room-Temperature Sensing Mechanism of GQDs/BiSbO4 Nanorod Clusters: Experimental and Density Functional Theory Study.
Zheng, Zichen; Liu, Kewei; Zhou, Yiwen et al.
2024In ACS Sensors, 9 (6), p. 3346 - 3356
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Keywords :
bismuth antimonate; gas sensor; graphene quantum dots; heptanal; moderate temperature; Graphite; Antimony; Density Functional Theory; Antimony/chemistry; Nanotubes/chemistry; Temperature; Quantum Dots/chemistry; Graphite/chemistry; Antimonate; Density functional theory studies; Gas-sensors; Mesoporous; Nanorod clusters; Room temperature sensing; Sensing mechanism; Nanotubes; Quantum Dots; Bioengineering; Instrumentation; Process Chemistry and Technology; Fluid Flow and Transfer Processes
Abstract :
[en] Creating high-performance gas sensors for heptanal detection at room temperature demands the development of sensing materials that incorporate distinct spatial configurations, functional components, and active surfaces. In this study, we employed a straightforward method combining hydrothermal strategy with ultrasonic processing to produce mesoporous graphene quantum dots/bismuth antimonate (GQDs/BiSbO4) with nanorod cluster forms. The BiSbO4 was incorporated with appropriate contents of GQDs resulting in significantly improved attributes such as heightened sensitivity (59.6@30 ppm), a lower threshold for detection (356 ppb), and quicker period for response (40 s). A synergistic mechanism that leverages the inherent advantages of BiSbO4 was proposed, while its distinctive mesoporous hollow cubic structure, the presence of oxygen vacancies, and the catalytic enhancement provided by GQDs lead to a marked improvement in heptanal detection. This work introduces a straightforward and effective method for crafting sophisticated micro-nanostructures that optimize spatial design, functionality, and active mesoporous surfaces, showing great promise for heptanal sensing applications.
Disciplines :
Materials science & engineering
Author, co-author :
Zheng, Zichen;  College of Mechanical Engineering, Yangzhou University, Yangzhou, Jiangsu Province 225127, P. R. China
Liu, Kewei;  College of Mechanical Engineering, Yangzhou University, Yangzhou, Jiangsu Province 225127, P. R. China
Zhou, Yiwen;  College of Mechanical Engineering, Yangzhou University, Yangzhou, Jiangsu Province 225127, P. R. China
Xu, Kaichun;  College of Mechanical Engineering, Yangzhou University, Yangzhou, Jiangsu Province 225127, P. R. China
Debliquy, Marc ;  Université de Mons - UMONS > Faculté Polytechnique > Service de Science des Matériaux
Zhang, Chao ;  College of Mechanical Engineering, Yangzhou University, Yangzhou, Jiangsu Province 225127, P. R. China
Language :
English
Title :
Room-Temperature Sensing Mechanism of GQDs/BiSbO4 Nanorod Clusters: Experimental and Density Functional Theory Study.
Publication date :
28 June 2024
Journal title :
ACS Sensors
ISSN :
2379-3694
Publisher :
American Chemical Society, United States
Volume :
9
Issue :
6
Pages :
3346 - 3356
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
Funders :
China Scholarship Council
Outstanding Youth Foundation of Jiangsu Province
Yangzhou Science and Technology Plan Project
Postgraduate Research and Practice Innovation Program of Jiangsu Province of China
Funding text :
This work was supported by the Outstanding Youth Foundation of Jiangsu Province of China (No. BK20211548), the Yangzhou Science and Technology Plan Project (No. YZ2023246), the China Scholarship Council (No. 202308320445), and Postgraduate Research and Practice Innovation Program of Jiangsu Province of China (No. KYCX23_3551).
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