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Wu P, Fan J, Tai Y, He X, Zheng D, Yao Y, Sun S, Ying B, Luo Y, Hu W, Sun X, Li Y. Ag@TiO 2 nanoribbon array: a high-performance sensor for electrochemical non-enzymatic glucose detection in beverage sample. Food Chem 2024; 447:139018. [PMID: 38503067 DOI: 10.1016/j.foodchem.2024.139018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 03/02/2024] [Accepted: 03/10/2024] [Indexed: 03/21/2024]
Abstract
Developing an accurate, cost-effective, reliable, and stable glucose detection sensor for the food industry poses a significant yet challenging endeavor. Herein, we present a silver nanoparticle-decorated titanium dioxide nanoribbon array on titanium plate (Ag@TiO2/TP) as an efficient electrode for non-enzymatic glucose detection in alkaline environments. Electrochemical evaluations of the Ag@TiO2/TP electrode reveal a broad linear response range (0.001 mM - 4 mM), high sensitivity (19,106 and 4264 μA mM-1 cm-2), rapid response time (6 s), and a notably low detection limit (0.18 μM, S/N = 3). Moreover, its efficacy in measuring glucose in beverage samples shows its practical applicability. The impressive performance and structural benefits of the Ag@TiO2/TP electrode highlight its potential in advancing electrochemical sensors for small molecule detection.
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Affiliation(s)
- Peilin Wu
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Jiwen Fan
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Yunze Tai
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Xun He
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China
| | - Dongdong Zheng
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China
| | - Yongchao Yao
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Shengjun Sun
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China
| | - Binwu Ying
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Yao Luo
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Wenchuang Hu
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
| | - Xuping Sun
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China; College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, Shandong, China.
| | - Yi Li
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China.
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2
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Füredi M, Manzano CV, Marton A, Fodor B, Alvarez-Fernandez A, Guldin S. Beyond the Meso/Macroporous Boundary: Extending Capillary Condensation-Based Pore Size Characterization in Thin Films Through Tailored Adsorptives. J Phys Chem Lett 2024; 15:1420-1427. [PMID: 38290522 PMCID: PMC10860133 DOI: 10.1021/acs.jpclett.3c03442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 01/16/2024] [Accepted: 01/19/2024] [Indexed: 02/01/2024]
Abstract
The characterization of thin films containing nanopores with diameters exceeding 50 nm poses significant challenges, especially when deploying sorption-based techniques. Conventional volumetric physisorption or mercury intrusion methods have limited applicability in thin films due to constraints in sample preparation and nondestructive testing. In this context, ellipsometric porosimetry represents a viable alternative, leveraging its optical sensitivity to thin films. With existing setups relying on the capillary condensation of volatile compounds such as water, applicability is typically restricted to pore dimensions <50 nm. In this study, we introduce two high-molar-mass hydrocarbon adsorptives, namely ethylbenzene and n-nonane. These adsorptives exhibit substantial potential in improving the accuracy of physisorption measurements beyond mesoporosity (i.e., >50 nm). Specifically, with n-nonane, applicability is extended up to 80 nm pores. Our measurement guidelines propose a nondestructive, expeditious (<60 min), low-pressure (<0.03 bar) approach to investigate nanoporous thin films with potential adaptability to diverse structural architectures.
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Affiliation(s)
- Máté Füredi
- Department
of Chemical Engineering, University College
London, Torrington Place, London, WC1E 7JE, United Kingdom
- Semilab
Co. Ltd., Prielle Kornélia u. 2, H-1117 Budapest, Hungary
| | - Cristina V. Manzano
- Instituto
de Micro y Nanotecnología, IMN-CNM, CSIC (CEI UAM+CSIC), Isaac Newton 8, E-28760 Madrid, Spain
| | - András Marton
- Semilab
Co. Ltd., Prielle Kornélia u. 2, H-1117 Budapest, Hungary
| | - Bálint Fodor
- Semilab
Co. Ltd., Prielle Kornélia u. 2, H-1117 Budapest, Hungary
| | - Alberto Alvarez-Fernandez
- Centro
de Física de Materiales (CFM) (CSIC−UPV/EHU) −
Materials Physics Center (MPC), Paseo Manuel de Lardizabal 5, 20018 San Sebastián, Spain
| | - Stefan Guldin
- Department
of Chemical Engineering, University College
London, Torrington Place, London, WC1E 7JE, United Kingdom
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