Article (Scientific journals)
Urchin-like Na-doped zinc oxide nanoneedles for low-concentration and exclusive VOC detections
Zhou, Yiwen; Luo, Yifan; Zheng, Zichen et al.
2024In Journal of Advanced Ceramics, 13 (4), p. 507 - 517
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Keywords :
citric acid; gas sensor; heterovalent ions doping; lung cancer; volatile organic compound (VOC) detection; zinc oxide (ZnO); Doped zinc oxides; Gas-sensors; Heterovalent ion doping; Heterovalent ions; Ion-doping; Lung Cancer; Na doped; Urchin-like; Volatile organic compound detection; Zinc oxide; Electronic, Optical and Magnetic Materials; Ceramics and Composites
Abstract :
[en] In the early-stage diagnosis of lung cancer, the low-concentration (< 5 ppm) volatile organic compounds (VOCs) are extensively identified to be the biomarkers for breath analysis. Herein, the urchin-like sodium (Na)-doped zinc oxide (ZnO) nanoneedles were synthesized through a hydrothermal strategy with the addition of different contents of citric acid. The Na-doped ZnO gas sensor with a 3: 1 molar ratio of Na+ and citric acid showed outstanding sensing properties with an optimal selectivity to various VOCs (formaldehyde (HCOH), isopropanol, acetone, and ammonia) based on working temperature regulation. Specifically, significantly enhanced sensitivity (21.3@5 ppm) compared with pristine ZnO (~7-fold), low limit of detection (LOD) (298 ppb), robust humidity resistance, and long-term stability of formaldehyde sensing performances were obtained, which can be attributed to the formation of a higher concentration of oxygen vacancies (20.98%) and the active electron transitions. Furthermore, the improved sensing mechanism was demonstrated by the exquisite band structure and introduction of the additional acceptor level, which resulted in the narrowed bandgap of ZnO.
Disciplines :
Materials science & engineering
Author, co-author :
Zhou, Yiwen;  College of Mechanical Engineering, Yangzhou University, Yangzhou, China
Luo, Yifan;  College of Mechanical Engineering, Yangzhou University, Yangzhou, China ; Material Science Department, University of Mons, Mons, Belgium
Zheng, Zichen;  College of Mechanical Engineering, Yangzhou University, Yangzhou, China
Liu, Kewei;  College of Mechanical Engineering, Yangzhou University, Yangzhou, China ; Material Science Department, University of Mons, Mons, Belgium
He, Xiaoxi;  College of Mechanical Engineering, Yangzhou University, Yangzhou, China
Wu, Kaidi;  College of Mechanical Engineering, Yangzhou University, Yangzhou, China
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 :
Urchin-like Na-doped zinc oxide nanoneedles for low-concentration and exclusive VOC detections
Publication date :
April 2024
Journal title :
Journal of Advanced Ceramics
ISSN :
2226-4108
eISSN :
2227-8508
Publisher :
Tsinghua University Press
Volume :
13
Issue :
4
Pages :
507 - 517
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 was supported by the Outstanding Youth Foundation of Jiangsu Province of China (No. BK20211548), the Yangzhou Science and Technology Plan Project (No. YZ2023246), the Qinglan Project of Yangzhou University, and the Research Innovation Plan of Graduate Education Innovation Project in Jiangsu Province (No. KYCX23_3530).
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