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Chaudhary P, Verma A, Chaudhary S, Kumar M, Lin MF, Huang YC, Chen KL, Yadav BC. Design of a Humidity Sensor for a PPE Kit Using a Flexible Paper Substrate. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:9602-9612. [PMID: 38651307 DOI: 10.1021/acs.langmuir.4c00366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
The present work reports the rapid sweat detection inside a PPE kit using a flexible humidity sensor based on hydrothermally synthesized ZnO (zinc oxide) nanoflowers (ZNFs). Physical characterization of ZNFs was done using scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transmission infrared spectroscopy (FTIR), UV-visible, particle size analysis, Raman analysis, and X-ray photoelectron spectroscopy (XPS) analysis, and the hydrophilicity was investigated by using contact angle measurement. Fabrication of a flexible sensor was done by deposition on the paper substrate using the spin coating technique. It exhibited high sensitivity and low response and recovery times in the humidity range 10-95%RH. The sensor demonstrated the highest sensitivity of 296.70 nF/%RH within the humidity range 55-95%RH, and the rapid response and recovery times were also calculated and found as 5.10/1.70 s, respectively. The selectivity of the proposed sensor was also analyzed, and it is highly sensitive to humidity. The humidity sensing characteristics were theoretically witnessed in terms of the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) and electronic properties of sensing materials in ambient and humid conditions. These theoretical results are evidence of the interaction of ZnO with humidity. Overall, the present study provides a scope of architecture-enabled paper-based humidity sensors for the detection of sweat levels inside PPE kits for health workers.
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Affiliation(s)
- Priyanka Chaudhary
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
| | - Arpit Verma
- Nanomaterials and Sensors Research Laboratory, Department of Physics, Babasaheb Bhimrao Ambedkar University, Lucknow, Uttar Pradesh 226025, India
| | - Sandeep Chaudhary
- Department of Mathematics, Babasaheb Bhimrao Ambedkar University, Lucknow, Uttar Pradesh 226025, India
| | - Mahesh Kumar
- Department of Electrical Engineering, Indian Institute of Technology Jodhpur, Jodhpur 342011, India
| | - Meng-Fang Lin
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
| | - Yu-Ching Huang
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
| | - Kuen-Lin Chen
- Department of Physics, National Chung Hsing University, Taichung 40227, Taiwan
| | - B C Yadav
- Nanomaterials and Sensors Research Laboratory, Department of Physics, Babasaheb Bhimrao Ambedkar University, Lucknow, Uttar Pradesh 226025, India
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Du D, Shu J, Guo M, Haghighatbin MA, Yang D, Bian Z, Cui H. Potential-Resolved Differential Electrochemiluminescence Immunosensor for Cardiac Troponin I Based on MOF-5-Wrapped CdS Quantum Dot Nanoluminophores. Anal Chem 2020; 92:14113-14121. [DOI: 10.1021/acs.analchem.0c03131] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Dexin Du
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Jiangnan Shu
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Mingquan Guo
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Mohammad A. Haghighatbin
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Di Yang
- Institute of Cardiovascular Disease, First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P. R. China
| | - Zhiping Bian
- Institute of Cardiovascular Disease, First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, P. R. China
| | - Hua Cui
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
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Sun H, Wang M, Wang J, Tian M, Wang H, Sun Z, Huang P. Development of magnetic separation and quantum dots labeled immunoassay for the detection of mercury in biological samples. J Trace Elem Med Biol 2015; 30:37-42. [PMID: 25744508 DOI: 10.1016/j.jtemb.2015.01.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Revised: 12/14/2014] [Accepted: 01/14/2015] [Indexed: 10/24/2022]
Abstract
A rapid and sensitive immunoassays of mercury (Hg) in biological samples was developed using quantum dots (QDs) and magnetic beads (MBs) as fluorescent and separated probes, respectively. A monoclonal antibody (mAb) that recognizes an Hg detection antigen (BSA-DTPA-Hg) complex was produced by the injection of BALB/c mice with an Hg immunizing antigen (KLH-DTPA-Hg). Then the ascites monoclonal antibodies were purified. The Hg monoclonal antibody (Hg-mAb) is conjugated with MBs to separate Hg from biological samples, and the other antibody, which is associated with QDs, is used to detect the fluorescence. The Hg in biological samples can be quantified using the relationship between the QDs fluorescence intensity and the concentration of Hg in biological samples following magnetic separation. In this method, the detection linear range is 1-1000ng/mL, and the minimum detection limit is 1ng/mL. The standard addition recovery rate was 94.70-101.18%. The relative standard deviation values were 2.76-7.56%. Furthermore, the Hg concentration can be detected in less than 30min, the significant interference of other heavy metals can be avoided, and the simultaneous testing of 96 samples can be performed. These results indicate that the method could be used for rapid monitoring Hg in the body.
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Affiliation(s)
- Hubo Sun
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, No. 10 Xitoutiao, You An Men, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, No. 10 Xitoutiao, You An Men, Beijing 100069, China
| | - Mengmeng Wang
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, No. 10 Xitoutiao, You An Men, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, No. 10 Xitoutiao, You An Men, Beijing 100069, China
| | - Jilong Wang
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, No. 10 Xitoutiao, You An Men, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, No. 10 Xitoutiao, You An Men, Beijing 100069, China
| | - Mi Tian
- Medical Experiment and Test Center, Capital Medical University, No. 10 Xitoutiao, You An Men, Beijing 100069, China
| | - Hui Wang
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, No. 10 Xitoutiao, You An Men, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, No. 10 Xitoutiao, You An Men, Beijing 100069, China
| | - Zhiwei Sun
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, No. 10 Xitoutiao, You An Men, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, No. 10 Xitoutiao, You An Men, Beijing 100069, China
| | - Peili Huang
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, No. 10 Xitoutiao, You An Men, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, No. 10 Xitoutiao, You An Men, Beijing 100069, China.
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