1
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Moura PC, Raposo M, Vassilenko V. Breath biomarkers in Non-Carcinogenic diseases. Clin Chim Acta 2024; 552:117692. [PMID: 38065379 DOI: 10.1016/j.cca.2023.117692] [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: 11/10/2023] [Revised: 12/02/2023] [Accepted: 12/03/2023] [Indexed: 12/19/2023]
Abstract
The analysis of volatile organic compounds (VOCs) from human matrices like breath, perspiration, and urine has received increasing attention from academic and medical researchers worldwide. These biological-borne VOCs molecules have characteristics that can be directly related to physiologic and pathophysiologic metabolic processes. In this work, gathers a total of 292 analytes that have been identified as potential biomarkers for the diagnosis of various non-carcinogenic diseases. Herein we review the advances in VOCs with a focus on breath biomarkers and their potential role as minimally invasive tools to improve diagnosis prognosis and therapeutic monitoring.
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Affiliation(s)
- Pedro Catalão Moura
- Laboratory for Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UNL), Department of Physics, NOVA School of Science and Technology, NOVA University of Lisbon, Campus FCT-UNL, 2829-516, Caparica, Portugal.
| | - Maria Raposo
- Laboratory for Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UNL), Department of Physics, NOVA School of Science and Technology, NOVA University of Lisbon, Campus FCT-UNL, 2829-516, Caparica, Portugal.
| | - Valentina Vassilenko
- Laboratory for Instrumentation, Biomedical Engineering and Radiation Physics (LIBPhys-UNL), Department of Physics, NOVA School of Science and Technology, NOVA University of Lisbon, Campus FCT-UNL, 2829-516, Caparica, Portugal.
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2
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Jadhav MR, Wankhede PR, Srivastava S, Bhargaw HN, Singh S. Breath-based biosensors and system development for noninvasive detection of diabetes: A review. Diabetes Metab Syndr 2024; 18:102931. [PMID: 38171153 DOI: 10.1016/j.dsx.2023.102931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 12/15/2023] [Accepted: 12/15/2023] [Indexed: 01/05/2024]
Abstract
BACKGROUND AND AIMS In recent years, noninvasive techniques are becoming conspicuous for diabetes detection. Sweat, tear, saliva, urine and breath-based methods showing prominent results in breath acetone detection which is considered as a biomarker of diabetes. A concrete relationship between breath acetone and BG helps in the development of devices for diabetes detection. METHODS The primary source for this study includes scholarly publications that primarily focus on the development of biosensors and systems for diabetes detection using acetone present in breath. Articles were analysed to examine various types of biosensors with their sensing materials to provide acetone detection limits. Recent noninvasive systems and products have been investigated and determine the relationship between breath acetone and BG levels. RESULTS Breath-based biosensor technologies are capable for diabetes detection. The acetone biosensor detection ranges from 100 ppb to 100 ppm, and it can applicable from room temperature to 400 °C. In healthy volunteers, acetone level ranges from 0.32 to 2.19 ppm, while patients with diabetes exhibit a wider range of 0.22-21 ppm depending on the biosensor, detection method, and clinical circumstances of patients and lab conditions. CONCLUSION This manuscript presents an extensive analysis of breath-based biosensors and their potential for detection of diabetes. Acetone detection methods are promising but unable to provide concrete correlation between breath acetone and blood glucose levels. The present study motivates the continued research and development of biosensors, and electronic devices to provide linear relationship of breath acetone and BG for noninvasive diabetes detection applications.
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Affiliation(s)
- Mahendra R Jadhav
- CSIR-Advanced Materials and Processes Research Institute, Bhopal, 462026, Madhya Pradesh, India.
| | - P R Wankhede
- CSMSS Chh. Shahu College of Engineering, Chhatrapati Sambhajinagar, 431001, Maharashtra, India
| | - Satyam Srivastava
- CSIR-Central Electronics Engineering Research Institute, Pilani, 333031, Rajasthan, India
| | - Hari N Bhargaw
- CSIR-Advanced Materials and Processes Research Institute, Bhopal, 462026, Madhya Pradesh, India
| | - Samarth Singh
- CSIR-Advanced Materials and Processes Research Institute, Bhopal, 462026, Madhya Pradesh, India
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3
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Kimakova T, Kondrakhova D, Ovodok E, Ivanovskaya M, Kormosh V, Vorobiov S, Lisnichuk M, Bilanych V, Komanicky V. Sensors Based on Tin and Indium Oxides for the Determination of Acetone in Human Breath. ACS OMEGA 2023; 8:40078-40086. [PMID: 37929141 PMCID: PMC10620925 DOI: 10.1021/acsomega.3c02125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 09/15/2023] [Indexed: 11/07/2023]
Abstract
The properties of planar sensors based on tin dioxide and indium oxide used for the determination of acetone vapors have been studied. Sensors based on synthesized SnO2 and In2O3 nanopowders showed high sensitivity to low concentrations of acetone in a humid environment which simulates human exhalation. The addition of a small amount of AuIII ions to hydroxide sols significantly increases the threshold sensitivity and the sensor response in a wide range of acetone concentrations. In2O3-Au sensors have the maximum sensitivity at an operating temperature of 325 °C. The In2O3-Au-sensors reliably record the change in acetone concentration in the concentration range from a minimum of 0.1 to 5 ppm with high accuracy, which is necessary for rapid diagnostics of the condition of patients with diabetes (1.8-5.0 ppm). The high sensitivity of the obtained sensors is explained by the structural features and the surface conditions of oxides and gold nanoparticles, which depend on the sample synthesis conditions.
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Affiliation(s)
- Tatiana Kimakova
- Faculty
of Medicine, Pavol Jozef Šafárik
University, Kosice 04001, Slovakia
| | - Daria Kondrakhova
- Faculty
of Science, Pavol Jozef Šafárik
University, Kosice 04001, Slovakia
| | - Evgeni Ovodok
- Research
Institute for Physical-Chemical Problems of the Belarusian State University, Minsk 220030, Belarus
| | - Marya Ivanovskaya
- Research
Institute for Physical-Chemical Problems of the Belarusian State University, Minsk 220030, Belarus
| | - Valentina Kormosh
- Research
Institute of Analytical Technique of Uzhhorod National University, Uzhhorod 88000, Ukraine
| | - Serhii Vorobiov
- Faculty
of Science, Pavol Jozef Šafárik
University, Kosice 04001, Slovakia
| | - Maksym Lisnichuk
- Faculty
of Science, Pavol Jozef Šafárik
University, Kosice 04001, Slovakia
| | - Vitalij Bilanych
- Faculty
of Science, Pavol Jozef Šafárik
University, Kosice 04001, Slovakia
- Faculty
of Physics, Uzhhorod National University, Uzhhorod 88000, Ukraine
| | - Vladimir Komanicky
- Faculty
of Science, Pavol Jozef Šafárik
University, Kosice 04001, Slovakia
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4
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John AT, Tricoli A. Flame assisted synthesis of nanostructures for device applications. ADVANCES IN PHYSICS: X 2022. [DOI: 10.1080/23746149.2021.1997153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- Alishba T John
- Nanotechnology Research Laboratory, Research School of Chemistry, College of Science, The Australian National University, Canberra, Australia
| | - Antonio Tricoli
- Nanotechnology Research Laboratory, Research School of Chemistry, College of Science, The Australian National University, Canberra, Australia
- Nanotechnology Research Laboratory, School of Biomedical Engineering, Faculty of Engineering, The University of Sydney, Camperdown, Australia
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5
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Liu W, Ma Y, Liu X, Zhou J, Xu C, Dong B, Lee C. Larger-Than-Unity External Optical Field Confinement Enabled by Metamaterial-Assisted Comb Waveguide for Ultrasensitive Long-Wave Infrared Gas Spectroscopy. NANO LETTERS 2022; 22:6112-6120. [PMID: 35759415 DOI: 10.1021/acs.nanolett.2c01198] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Nanophotonic waveguides that implement long optical pathlengths on chips are promising to enable chip-scale gas sensors. Nevertheless, current absorption-based waveguide sensors suffer from weak interactions with analytes, limiting their adoptions in most demanding applications such as exhaled breath analysis and trace-gas monitoring. Here, we propose an all-dielectric metamaterial-assisted comb (ADMAC) waveguide to greatly boost the sensing capability. By leveraging large longitudinal electric field discontinuity at periodic high-index-contrast interfaces in the subwavelength grating metamaterial and its unique features in refractive index engineering, the ADMAC waveguide features strong field delocalization into the air, pushing the external optical field confinement factor up to 113% with low propagation loss. Our sensor operates in the important but underdeveloped long-wave infrared spectral region, where absorption fingerprints of plentiful chemical bonds are located. Acetone absorption spectroscopy is demonstrated using our sensor around 7.33 μm, showing a detection limit of 2.5 ppm with a waveguide length of only 10 mm.
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Affiliation(s)
- Weixin Liu
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
- Center for Intelligent Sensors and MEMS (CISM), National University of Singapore, Singapore 117608, Singapore
| | - Yiming Ma
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
- Center for Intelligent Sensors and MEMS (CISM), National University of Singapore, Singapore 117608, Singapore
| | - Xinmiao Liu
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
- Center for Intelligent Sensors and MEMS (CISM), National University of Singapore, Singapore 117608, Singapore
| | - Jingkai Zhou
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
- Center for Intelligent Sensors and MEMS (CISM), National University of Singapore, Singapore 117608, Singapore
| | - Cheng Xu
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
- Center for Intelligent Sensors and MEMS (CISM), National University of Singapore, Singapore 117608, Singapore
| | - Bowei Dong
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
- Center for Intelligent Sensors and MEMS (CISM), National University of Singapore, Singapore 117608, Singapore
| | - Chengkuo Lee
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117583, Singapore
- Center for Intelligent Sensors and MEMS (CISM), National University of Singapore, Singapore 117608, Singapore
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6
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Detection of volatile organic compounds using mid-infrared silicon nitride waveguide sensors. Sci Rep 2022; 12:5572. [PMID: 35368033 PMCID: PMC8976853 DOI: 10.1038/s41598-022-09597-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Accepted: 03/15/2022] [Indexed: 11/29/2022] Open
Abstract
Mid-infrared (mid-IR) sensors consisting of silicon nitride (SiN) waveguides were designed and tested to detect volatile organic compounds (VOCs). SiN thin films, prepared by low-pressure chemical vapor deposition (LPCVD), have a broad mid-IR transparent region and a lower refractive index (nSiN = 2.0) than conventional materials such as Si (nSi = 3.4), which leads to a stronger evanescent wave and therefore higher sensitivity, as confirmed by a finite-difference eigenmode (FDE) calculation. Further, in-situ monitoring of three VOCs (acetone, ethanol, and isoprene) was experimentally demonstrated through characteristic absorption measurements at wavelengths λ = 3.0–3.6 μm. The SiN waveguide showed a five-fold sensitivity improvement over the Si waveguide due to its stronger evanescent field. To our knowledge, this is the first time SiN waveguides are used to perform on-chip mid-IR spectral measurements for VOC detection. Thus, the developed waveguide sensor has the potential to be used as a compact device module capable of monitoring multiple gaseous analytes for health, agricultural and environmental applications.
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7
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Zhang J, Lei C, Liang T, Liu R, Zhao Z, Qi L, Ghaffar A, Xiong J. Acetone Sensor Based on FAIMS-MEMS. MICROMACHINES 2021; 12:1531. [PMID: 34945383 PMCID: PMC8703384 DOI: 10.3390/mi12121531] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/02/2021] [Accepted: 12/05/2021] [Indexed: 12/02/2022]
Abstract
In this paper, to address the problems of large blood draws, long testing times, and the inability to achieve dynamic detection of invasive testing for diabetes, stemming from the principle that type 1 diabetic patients exhale significantly higher levels of acetone than normal people, a FAIMS-MEMS gas sensor was designed to detect acetone, which utilizes the characteristics of high sensitivity, fast response, and non-invasive operation. It is prepared by MEMS processes, such as photolithography, etching, and sputtering, its specific dimensions are 4000 μm in length, 3000 μm in width and 800 μm in height and the related test system was built to detect acetone gas. The test results show that when acetone below 0.8 ppm is introduced, the voltage value detected by the sensor basically does not change, while when acetone gas exceeds 1.8 ppm, the voltage value detected by the sensor increases significantly. The detection accuracy of the sensor prepared by this method is about 0.02 ppm/mV, and the voltage change can reach 1 V with a response time of 3 s and a recovery time of 4 s when tested under 20 ppm acetone environment; this has good repeatability and stability, and has great prospects in the field of non-invasive detection of type 1 diabetes.
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Affiliation(s)
- Junna Zhang
- State Key Laboratory of Dynamic Measurement Technology, North University of China, Taiyuan 030051, China; (J.Z.); (Z.Z.); (J.X.)
| | - Cheng Lei
- State Key Laboratory of Dynamic Measurement Technology, North University of China, Taiyuan 030051, China; (J.Z.); (Z.Z.); (J.X.)
| | - Ting Liang
- State Key Laboratory of Dynamic Measurement Technology, North University of China, Taiyuan 030051, China; (J.Z.); (Z.Z.); (J.X.)
| | - Ruifang Liu
- State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096, China;
| | - Zhujie Zhao
- State Key Laboratory of Dynamic Measurement Technology, North University of China, Taiyuan 030051, China; (J.Z.); (Z.Z.); (J.X.)
| | - Lei Qi
- North Automatic Control Technology Institute, Taiyuan 030006, China;
| | - Abdul Ghaffar
- State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China;
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jijun Xiong
- State Key Laboratory of Dynamic Measurement Technology, North University of China, Taiyuan 030051, China; (J.Z.); (Z.Z.); (J.X.)
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8
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Lupan O, Santos-Carballal D, Ababii N, Magariu N, Hansen S, Vahl A, Zimoch L, Hoppe M, Pauporté T, Galstyan V, Sontea V, Chow L, Faupel F, Adelung R, de Leeuw NH, Comini E. TiO 2/Cu 2O/CuO Multi-Nanolayers as Sensors for H 2 and Volatile Organic Compounds: An Experimental and Theoretical Investigation. ACS APPLIED MATERIALS & INTERFACES 2021; 13:32363-32380. [PMID: 34223766 DOI: 10.1021/acsami.1c04379] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
TiO2/Cu2O/CuO multi-nanolayers highly sensitive toward volatile organic compounds (VOCs) and H2 have been grown in various thicknesses by a cost-effective and reproducible combined spray-sputtering-annealing approach. The ultrathin TiO2 films were deposited by spray pyrolysis on top of sputtered-annealed Cu2O/CuO nanolayers to enhance their gas sensing performance and improve their protection against corrosion at high operating temperatures. The prepared heterostructures were investigated using scanning electron microscopy (SEM), X-ray diffraction (XRD), and ultraviolet visible (UV-vis) and micro-Raman spectroscopy. The gas sensing properties were measured at several operating temperatures, where the nanolayered sensors with oxide thicknesses between 20 and 30 nm (Cu2O/CuO nanolayers) exhibited a high response and an excellent selectivity to ethanol vapor after thermal annealing the samples at 420 °C. The results obtained at an operating temperature of 350 °C demonstrate that the CuO/Cu2O nanolayers with thicknesses between 20 and 30 nm are sensitive mainly to ethanol vapor, with a response of ∼150. The response changes from ethanol vapors to hydrogen gas as the thickness of the CuO/Cu2O nanolayers changes from 50 to 20 nm. Density functional theory-based calculations were carried out for the geometries of the CuO(1̅11)/Cu2O(111) and TiO2(111)/CuO(1̅11)/Cu2O(111) heterostructures and their sensing mechanism toward alcohols of different chain lengths and molecular hydrogen. The reconstructed hexagonal Cu2O(111) surface and the reconstructed monoclinic CuO(1̅11) and TiO2(111) facets, all of which terminate in an O layer, lead to the lowest surface energies for each isolated material. We studied the formation of the binary and ternary heteroepitaxial interfaces for the surface planes with the best-matching lattices. Despite the impact of the Cu2O(111) substrate in lowering the atomic charges of the CuO(1̅11) adlayer in the binary sensor, we found that it is the different surface structures of the CuO(1̅11)/Cu2O(111) and TiO2(111)/CuO(1̅11)/Cu2O(111) devices that are fundamental in driving the change in the sensitivity response observed experimentally. The experimental data, supported by the computational results, are important in understanding the use of the multi-nanolayered films tested in this work as reliable, accurate, and selective sensor structures for the tracking of gases at low concentrations.
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Affiliation(s)
- Oleg Lupan
- Functional Nanomaterials, Faculty of Engineering, Institute for Materials Science, Kiel University, Kaiserstraße 2, D-24143 Kiel, Germany
- Center for Nanotechnology and Nanosensors, Technical University of Moldova, 168 Stefan cel Mare si Sfant Boulevard, MD-2004 Chisinau, Republic of Moldova
- Department of Physics, University of Central Florida, Orlando, Florida 32816-2385, United States
| | | | - Nicolai Ababii
- Center for Nanotechnology and Nanosensors, Technical University of Moldova, 168 Stefan cel Mare si Sfant Boulevard, MD-2004 Chisinau, Republic of Moldova
| | - Nicolae Magariu
- Center for Nanotechnology and Nanosensors, Technical University of Moldova, 168 Stefan cel Mare si Sfant Boulevard, MD-2004 Chisinau, Republic of Moldova
| | - Sandra Hansen
- Functional Nanomaterials, Faculty of Engineering, Institute for Materials Science, Kiel University, Kaiserstraße 2, D-24143 Kiel, Germany
| | - Alexander Vahl
- Faculty of Engineering, Chair for Multicomponent Materials, Christian-Albrechts Universität zu Kiel, Kaiserstraße 2, D-24143, 16 Kiel, Germany
| | - Lukas Zimoch
- Functional Nanomaterials, Faculty of Engineering, Institute for Materials Science, Kiel University, Kaiserstraße 2, D-24143 Kiel, Germany
| | - Mathias Hoppe
- Functional Nanomaterials, Faculty of Engineering, Institute for Materials Science, Kiel University, Kaiserstraße 2, D-24143 Kiel, Germany
| | - Thierry Pauporté
- Institut de Recherche de Chimie Paris-IRCP, Chimie ParisTech, Paris Sciences et Lettres (PSL) Université, rue Pierre et Marie Curie 11, 75231 Paris, France
| | - Vardan Galstyan
- Sensor Laboratory, Department of Information Engineering (DII), University of Brescia, Via Valotti 9, 25133 Brescia, Italy
| | - Victor Sontea
- National Center for Biomedical Engineering, Technical University of Moldova, 168 Stefan cel Mare si Sfant Boulevard, MD-2004 Chisinau, Republic of Moldova
- Department of Nanoelectronics and Surface Modification, Sumy State University, 2 Rymskogo-Korsakova Street, 40007 Sumy, Ukraine
| | - Lee Chow
- Department of Physics, University of Central Florida, Orlando, Florida 32816-2385, United States
| | - Franz Faupel
- Faculty of Engineering, Chair for Multicomponent Materials, Christian-Albrechts Universität zu Kiel, Kaiserstraße 2, D-24143, 16 Kiel, Germany
| | - Rainer Adelung
- Functional Nanomaterials, Faculty of Engineering, Institute for Materials Science, Kiel University, Kaiserstraße 2, D-24143 Kiel, Germany
| | - Nora H de Leeuw
- School of Chemistry, University of Leeds, Leeds LS2 9JT, United Kingdom
- Department of Earth Sciences, Utrecht University, Budapestlaan 4, 3584 CD Utrecht, The Netherlands
| | - Elisabetta Comini
- Sensor Laboratory, Department of Information Engineering (DII), University of Brescia, Via Valotti 9, 25133 Brescia, Italy
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Li P, Zhang Z, Zhuang Z, Guo J, Fang Z, Fereja SL, Chen W. Pd-Doping-Induced Oxygen Vacancies in One-Dimensional Tungsten Oxide Nanowires for Enhanced Acetone Gas Sensing. Anal Chem 2021; 93:7465-7472. [PMID: 33973779 DOI: 10.1021/acs.analchem.1c00568] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Metal oxide semiconductors (MOS) with different nanostructures have been widely used as gas sensing materials due to the tunable interface structures and properties. However, further improvement of the sensing sensitivity and selectivity is still challenging in this area. Constructing appropriate heterogeneous interface structures and oxygen vacancies is one of the important strategies to tune the sensing properties of MOS. In the present study, interfacial heterostructures in PdxW18O49 nanowires (PdxW18O49 NWs) were fabricated and manipulated by doping different Pd contents through a simple hydrothermal process. Relevant characterization proved that the structure and composition of the one-dimensional (1D) nanomaterial can be effectively changed by Pd doping. It was found that the oxygen vacancy concentration increases first with the increase of Pd content, and when the Pd content increases to 7.18% (Pd7.18%W18O49 NWs), the oxygen vacancy content reaches the maximum (52.5%). If the Pd content continues to increase, the oxygen vacancy ratio decreases. The gas sensing investigations illustrated that the PdxW18O49 NWs exhibited enhanced sensing properties than pure W18O49 NWs toward acetone. Among the as-prepared catalysts, the Pd7.18%W18O49 NWs showed the best sensing response and the fastest response-recovery speeds (5 and 10 s, respectively) at a working temperature of 175 °C. In addition, this 1D nanostructure with fabricated heterostructures also delivers a good sensing selectivity and a wide detection range from 100 ppb to 300 ppm, with maintaining excellent performance in the presence of high concentrations of ethanol and carbon dioxide. The excellent gas sensing behavior could be attributed to the generated oxygen vacancies and the heterostructures upon Pd doping. This study offers a novel strategy for the design of high-performance gas sensors for ppb-level acetone sensing.
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Affiliation(s)
- Ping Li
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.,University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Ziwei Zhang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.,University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Zhihua Zhuang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.,University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jinhan Guo
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.,University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Zhongying Fang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.,University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Shemsu Ligani Fereja
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.,University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Wei Chen
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.,University of Science and Technology of China, Hefei, Anhui 230026, China
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10
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Americo S, Pargoletti E, Soave R, Cargnoni F, Trioni MI, Chiarello GL, Cerrato G, Cappelletti G. Unveiling the acetone sensing mechanism by WO3 chemiresistors through a joint theory-experiment approach. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2020.137611] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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11
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Abstract
Colorimetric sensing technologies have been widely used for both quantitative detection of specific analyte and recognition of a large set of analytes in gas phase, ranging from environmental chemicals to biomarkers in breath. However, the accuracy and reliability of the colorimetric gas sensors are threatened by the humidity interference in different application scenarios. Though substantial progress has been made toward new colorimetric sensors development, unless the humidity interference is well addressed, the colorimetric sensors cannot be deployed for real-world applications. Although there are comprehensive and insightful review articles about the colorimetric gas sensors, they have focused more on the progress in new sensing materials, new sensing systems, and new applications. There is a need for reviewing the works that have been done to solve the humidity issue, a challenge that the colorimetric gas sensors commonly face. In this review paper, we analyzed the mechanisms of the humidity interference and discussed the approaches that have been reported to mitigate the humidity interference in colorimetric sensing of environmental gases and breath biomarkers. Finally, the future perspectives of colorimetric sensing technologies are also discussed.
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Affiliation(s)
- Jingjing Yu
- Center for Bioelectronics and Biosensors, The Biodesign Institute, Arizona State University, Tempe, Arizona 85287, United States
| | - Di Wang
- Center for Bioelectronics and Biosensors, The Biodesign Institute, Arizona State University, Tempe, Arizona 85287, United States
| | - Vishal Varun Tipparaju
- Center for Bioelectronics and Biosensors, The Biodesign Institute, Arizona State University, Tempe, Arizona 85287, United States
| | - Francis Tsow
- Center for Bioelectronics and Biosensors, The Biodesign Institute, Arizona State University, Tempe, Arizona 85287, United States
| | - Xiaojun Xian
- Center for Bioelectronics and Biosensors, The Biodesign Institute, Arizona State University, Tempe, Arizona 85287, United States
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12
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Usman F, Dennis JO, Mkawi EM, Al-Hadeethi Y, Meriaudeau F, Ferrell TL, Aldaghri O, Sulieman A. Investigation of Acetone Vapour Sensing Properties of a Ternary Composite of Doped Polyaniline, Reduced Graphene Oxide and Chitosan Using Surface Plasmon Resonance Biosensor. Polymers (Basel) 2020; 12:E2750. [PMID: 33233844 PMCID: PMC7699882 DOI: 10.3390/polym12112750] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 11/14/2020] [Accepted: 11/18/2020] [Indexed: 11/27/2022] Open
Abstract
This work reports the use of a ternary composite that integrates p-Toluene sulfonic acid doped polyaniline (PANI), chitosan, and reduced graphene oxide (RGO) as the active sensing layer of a surface plasmon resonance (SPR) sensor. The SPR sensor is intended for application in the non-invasive monitoring and screening of diabetes through the detection of low concentrations of acetone vapour of less than or equal to 5 ppm, which falls within the range of breath acetone concentration in diabetic patients. The ternary composite film was spin-coated on a 50-nm-thick gold layer at 6000 rpm for 30 s. The structure, morphology and chemical composition of the ternary composite samples were characterized by FTIR, UV-VIS, FESEM, EDX, AFM, XPS, and TGA and the response to acetone vapour at different concentrations in the range of 0.5 ppm to 5 ppm was measured at room temperature using SPR technique. The ternary composite-based SPR sensor showed good sensitivity and linearity towards acetone vapour in the range considered. It was determined that the sensor could detect acetone vapour down to 0.88 ppb with a sensitivity of 0.69 degree/ppm with a linearity correlation coefficient of 0.997 in the average SPR angular shift as a function of the acetone vapour concentration in air. The selectivity, repeatability, reversibility, and stability of the sensor were also studied. The acetone response was 87%, 94%, and 99% higher compared to common interfering volatile organic compounds such as propanol, methanol, and ethanol, respectively. The attained lowest detection limit (LOD) of 0.88 ppb confirms the potential for the utilisation of the sensor in the non-invasive monitoring and screening of diabetes.
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Affiliation(s)
- Fahad Usman
- Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, Malaysia, Seri Iskandar, Perak 32610, Malaysia;
| | - John Ojur Dennis
- Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, Malaysia, Seri Iskandar, Perak 32610, Malaysia;
| | - E M Mkawi
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (E.M.M.); (Y.A.-H.)
| | - Yas Al-Hadeethi
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (E.M.M.); (Y.A.-H.)
| | - Fabrice Meriaudeau
- ImViA EA 7535, Team IFTIM, Université de Bourgogne, 21000 Dijon, France;
| | - Thomas L. Ferrell
- Department of Physics and Astronomy, University of Tennessee, 401 Nielsen Physics Building and Joint Institute for Materials Research 1408 Circle Drive Room 219 2641 Osprey Way, Knoxville, TN 37996, USA;
| | - Osamah Aldaghri
- Physics Department, College of Science, Al-Imam Muhammad Ibn Saud Islamic University, P.O. Box 5701, Riyadh 11432, Saudi Arabia;
| | - Abdelmoneim Sulieman
- Radiology and Medical Imaging Department, College of Applied Medical Sciences Prince Sattam bin Abdulaziz University, P.O. Box 422, Alkharj 11942, Saudi Arabia;
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13
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Zhou T, Chen S, Wang X, Xie C, Zeng D. Catalytic Activation of Cobalt Doping Sites in ZIF-71-Coated ZnO Nanorod Arrays for Enhancing Gas-Sensing Performance to Acetone. ACS APPLIED MATERIALS & INTERFACES 2020; 12:48948-48956. [PMID: 32989984 DOI: 10.1021/acsami.0c13089] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Developing acetone gas sensors with high sensitivity is crucially important for many applications including nonevasive diagnosis of diabetes. In the present work, cobalt doping is used to catalyze acetone gas-sensing reactions and hence to promote the sensitivity of acetone gas sensors. In order to achieve this, ZIF-71 metal-organic framework (MOF) is synthesized onto ZnO nanorod arrays with various concentrations of Co doping to form composite ZnO@ZIF-71(Co) sensors, which are then evaluated as sensing materials for acetone detection. Such sensors are shown to be sensitive to a trace amount of acetone (50 ppb) and have a massively enhanced response of about 100 times that for the undoped sensor at an optimal Co/Zn ratio and operating temperature. Fourier-transform infrared spectroscopy and temperature-programmed desorption with density functional theory calculations are also made to assist in elucidating the catalytic gas-sensing mechanism for the Co-doped composite sensors ZnO@ZIF-71(Co). It demonstrated that the introduced Co site in ZIF-71(Co) can activate oxygen catalytically and increase active oxygen released to the ZnO surface. Meanwhile, the Co sites also promote the decomposition of acetone. These two steps together affect the catalytic oxidation of gases and finally enhance the sensitivity. This work introduces the catalytic effect of the MOF into the gas-sensing mechanism and provides an idea for broadening the application of MOF catalysis.
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Affiliation(s)
- Tingting Zhou
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Shiyu Chen
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xiaoxia Wang
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Changsheng Xie
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Dawen Zeng
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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14
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Horst RJ, Brió Pérez M, Cohen R, Cirelli M, Dueñas Robles PS, Elshof MG, Andreski A, Hempenius MA, Benes NE, Damen C, de Beer S. Swelling of Poly(methyl acrylate) Brushes in Acetone Vapor. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:12053-12060. [PMID: 32997502 PMCID: PMC7558288 DOI: 10.1021/acs.langmuir.0c02510] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Indexed: 06/01/2023]
Abstract
Sensor platforms can benefit from the incorporation of polymer brushes since brushes can concentrate the analyte near the sensor surface. Brushes that absorb acetone vapor are of particular interest since acetone is an important marker for biological processes. We present a simple procedure to synthesize acetone-responsive poly(methyl acrylate) brushes. Using spectroscopic ellipsometry, we show that these brushes respond within seconds and swell by more than 30% when exposed to acetone vapor. Moreover, quartz crystal microbalance measurements demonstrate that the brushes can be exploited to increase the acetone detection sensitivity of sensors by more than a factor 6. Surprisingly, we find that the swelling ratio of the brushes in acetone vapor is independent of the grafting density and the degree of polymerization of the polymers in the brush. This is qualitatively different from swelling of the same brushes in liquid environments, where the swelling ratio decreases for increasing grafting densities. Yet, it indicates that the brushes are robust and reproducible candidates for implementation in vapor sensor systems.
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Affiliation(s)
- Rens J. Horst
- Materials
Science and Technology of Polymers, University
of Twente, 7522 NB Enschede, The Netherlands
| | - Maria Brió Pérez
- Materials
Science and Technology of Polymers, University
of Twente, 7522 NB Enschede, The Netherlands
| | - Rick Cohen
- Department
of Chemistry, Saxion University of Applied
Sciences, 7513 AB Enschede, The Netherlands
| | - Marco Cirelli
- Materials
Science and Technology of Polymers, University
of Twente, 7522 NB Enschede, The Netherlands
| | - Paloma S. Dueñas Robles
- Materials
Science and Technology of Polymers, University
of Twente, 7522 NB Enschede, The Netherlands
| | - Maria G. Elshof
- Membrane
Science and Technology Cluster, University
of Twente, 7522 NB Enschede, The Netherlands
| | - Aleksandar Andreski
- Department
of Nanotechnology, Saxion University of
Applied Sciences, 7513 AB Enschede, The Netherlands
| | - Mark A. Hempenius
- Materials
Science and Technology of Polymers, University
of Twente, 7522 NB Enschede, The Netherlands
| | - Nieck E. Benes
- Membrane
Science and Technology Cluster, University
of Twente, 7522 NB Enschede, The Netherlands
| | - Cas Damen
- Department
of Nanotechnology, Saxion University of
Applied Sciences, 7513 AB Enschede, The Netherlands
| | - Sissi de Beer
- Materials
Science and Technology of Polymers, University
of Twente, 7522 NB Enschede, The Netherlands
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15
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Pargoletti E, Cappelletti G. Breakthroughs in the Design of Novel Carbon-Based Metal Oxides Nanocomposites for VOCs Gas Sensing. NANOMATERIALS 2020; 10:nano10081485. [PMID: 32751173 PMCID: PMC7466532 DOI: 10.3390/nano10081485] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 07/17/2020] [Accepted: 07/23/2020] [Indexed: 01/26/2023]
Abstract
Nowadays, the detection of volatile organic compounds (VOCs) at trace levels (down to ppb) is feasible by exploiting ultra-sensitive and highly selective chemoresistors, especially in the field of medical diagnosis. By coupling metal oxide semiconductors (MOS e.g., SnO2, ZnO, WO3, CuO, TiO2 and Fe2O3) with innovative carbon-based materials (graphene, graphene oxide, reduced graphene oxide, single-wall and multi-wall carbon nanotubes), outstanding performances in terms of sensitivity, selectivity, limits of detection, response and recovery times towards specific gaseous targets (such as ethanol, acetone, formaldehyde and aromatic compounds) can be easily achieved. Notably, carbonaceous species, highly interconnected to MOS nanoparticles, enhance the sensor responses by (i) increasing the surface area and the pore content, (ii) favoring the electron migration, the transfer efficiency (spillover effect) and gas diffusion rate, (iii) promoting the active sites concomitantly limiting the nanopowders agglomeration; and (iv) forming nano-heterojunctions. Herein, the aim of the present review is to highlight the above-mentioned hybrid features in order to engineer novel flexible, miniaturized and low working temperature sensors, able to detect specific VOC biomarkers of a human's disease.
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Affiliation(s)
- Eleonora Pargoletti
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milan, Italy
- Consorzio Interuniversitario per la Scienza e Tecnologia dei Materiali (INSTM), Via Giusti 9, 50121 Firenze, Italy
- Correspondence: (E.P.); (G.C.); Tel.: +39-02-50314228 (G.C.)
| | - Giuseppe Cappelletti
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milan, Italy
- Consorzio Interuniversitario per la Scienza e Tecnologia dei Materiali (INSTM), Via Giusti 9, 50121 Firenze, Italy
- Correspondence: (E.P.); (G.C.); Tel.: +39-02-50314228 (G.C.)
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16
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Amiri V, Roshan H, Mirzaei A, Neri G, Ayesh AI. Nanostructured Metal Oxide-Based Acetone Gas Sensors: A Review. SENSORS (BASEL, SWITZERLAND) 2020; 20:E3096. [PMID: 32486201 PMCID: PMC7308862 DOI: 10.3390/s20113096] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/15/2020] [Accepted: 05/28/2020] [Indexed: 12/17/2022]
Abstract
Acetone is a well-known volatile organic compound that is widely used in different industrial and domestic areas. However, it can have dangerous effects on human life and health. Thus, the realization of sensitive and selective sensors for recognition of acetone is highly important. Among different gas sensors, resistive gas sensors based on nanostructured metal oxide with high surface area, have been widely reported for successful detection of acetone gas, owing to their high sensitivity, fast dynamics, high stability, and low price. Herein, we discuss different aspects of metal oxide-based acetone gas sensors in pristine, composite, doped, and noble metal functionalized forms. Gas sensing mechanisms are also discussed. This review is an informative document for those who are working in the field of gas sensors.
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Affiliation(s)
- Vahid Amiri
- Department of Materials Science and Engineering, Shiraz University of Technology, Shiraz 71555-13876, Iran;
| | - Hossein Roshan
- School of Electrical and Computer Engineering, Shiraz University, Shiraz 51154-71348, Iran;
| | - Ali Mirzaei
- Department of Materials Science and Engineering, Shiraz University of Technology, Shiraz 71555-13876, Iran;
| | - Giovanni Neri
- Department of Engineering, University of Messina, C.da Di Dio, I-98166 Messina, Italy
| | - Ahmad I. Ayesh
- Department of Math., Stat. and Physics, Qatar University, Doha P.O. Box 2713, Qatar
- Center for Sustainable Development, Qatar University, Doha P.O. Box 2713, Qatar
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17
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Chen H, Zhang M, Fu X, Fusco Z, Bo R, Xing B, Nguyen HT, Barugkin C, Zheng J, Lau CFJ, Huang S, Ho-Baillie AWY, Catchpole KR, Tricoli A. Light-activated inorganic CsPbBr 2I perovskite for room-temperature self-powered chemical sensing. Phys Chem Chem Phys 2019; 21:24187-24193. [PMID: 31658307 DOI: 10.1039/c9cp03059j] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Halide perovskite materials are excellent light harvesters that have generated enormous interest for photovoltaic technology and an increasing number of other optoelectronic applications. Very recently, their use for miniaturized chemical sensors has shown a promising room-temperature response. Here, we present some insights on the use of CsPbBr2I (CPBI) perovskites for self-powered room-temperature sensing of several environmentally and medically relevant compounds demonstrating rapid detection of down to concentrations of 1 ppm. Notably, the photocurrent of these self-powered CPBI-based devices increases under exposure to both reducing (e.g. acetone, propane) and oxidizing (e.g. NO2, O2) gas molecules and decreases rapidly upon reverting to an inert atmosphere. In situ photoluminescence (PL) analysis of the CPBI during exposure to oxidizing molecules reveals a strongly increased PL intensity and longer lifetime indicating a prevalent role of CPBI trap states in the sensing mechanism. These findings provide new insights for the engineering of perovskite-based materials for their future chemical sensing applications.
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Affiliation(s)
- Hongjun Chen
- Nanotechnology Research Laboratory, Research School of Electrical, Energy and Materials Engineering, College of Engineering and Computer Sciences, Australian National University, Canberra 2601, Australia.
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18
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Kim JS, Na CW, Kwak CH, Li HY, Yoon JW, Kim JH, Jeong SY, Lee JH. Humidity-Independent Gas Sensors Using Pr-Doped In 2O 3 Macroporous Spheres: Role of Cyclic Pr 3+/Pr 4+ Redox Reactions in Suppression of Water-Poisoning Effect. ACS APPLIED MATERIALS & INTERFACES 2019; 11:25322-25329. [PMID: 31268653 DOI: 10.1021/acsami.9b06386] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Pure and 3-12 at. % Pr-doped In2O3 macroporous spheres were fabricated by ultrasonic spray pyrolysis and their acetone-sensing characteristics under dry and humid conditions were investigated to design humidity-independent gas sensors. The 12 at. % Pr-doped In2O3 sensor exhibited approximately the same acetone responses and sensor resistances at 450 °C regardless of the humidity variation, whereas the pure In2O3 exhibited significant deterioration in gas-sensing characteristics upon the change in the atmosphere, from dry to humid (relative humidity: 80%). Moreover, the 12 at. % Pr-doped In2O3 sensor exhibited a high response to acetone with negligible cross responses to interfering gases (NH3, CO, benzene, toluene, NO2, and H2) under the highly humid atmosphere. The mechanism for the humidity-immune gas-sensing characteristics was investigated by X-ray photoelectron and diffuse reflectance infrared Fourier transform spectroscopies together with the phenomenological gas-sensing results and discussed in relation with Pr3+/Pr4+ redox pairs, regenerative oxygen adsorption, and scavenging of hydroxyl groups.
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Affiliation(s)
- Jun-Sik Kim
- Department of Materials Science and Engineering , Korea University , Seoul 02841 , Republic of Korea
| | - Chan Woong Na
- Dongnam Regional Division , Korea Institute of Industrial Technology , Busan 46938 , Republic of Korea
| | - Chang-Hoon Kwak
- Department of Materials Science and Engineering , Korea University , Seoul 02841 , Republic of Korea
| | - Hua-Yao Li
- School of Optical and Electronic Information , Huazhong University of Science and Technology , 1037 Luoyu Road , Wuhan , Hubei 430074 , P. R. China
| | - Ji Won Yoon
- Department of Materials Science and Engineering , Korea University , Seoul 02841 , Republic of Korea
| | - Jae-Hyeok Kim
- Department of Materials Science and Engineering , Korea University , Seoul 02841 , Republic of Korea
| | - Seong-Yong Jeong
- Department of Materials Science and Engineering , Korea University , Seoul 02841 , Republic of Korea
| | - Jong-Heun Lee
- Department of Materials Science and Engineering , Korea University , Seoul 02841 , Republic of Korea
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19
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Siebert L, Lupan O, Mirabelli M, Ababii N, Terasa MI, Kaps S, Cretu V, Vahl A, Faupel F, Adelung R. 3D-Printed Chemiresistive Sensor Array on Nanowire CuO/Cu 2O/Cu Heterojunction Nets. ACS APPLIED MATERIALS & INTERFACES 2019; 11:25508-25515. [PMID: 31260251 DOI: 10.1021/acsami.9b04385] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this work, the one-step three-dimensional (3D) printing of 20 nm nanowire (NW)-covered CuO/Cu2O/Cu microparticles (MPs) with diameters of 15-25 μm on the surface of the glass substrate forming an ordered net is successfully reported for the first time. 3D-printed Cu MP-based stripes formed nonplanar CuO/Cu2O/Cu heterojunctions after thermal annealing at 425 °C for 2 h in air and were fully covered with a 20 nm NW net bridging MPs with external Au contacts. The morphological, vibrational, chemical, and structural investigations were performed in detail, showing the high crystallinity of the NWs and 3D-printed CuO/Cu2O/Cu heterojunction lines, as well as the growth of CuO NWs on the surface of MPs. The gas-sensing measurements showed excellent selectivity to acetone vapor at an operating temperature of 350 °C with a high gas response about 150% to 100 ppm. The combination of the possibility of fast acetone vapor detection, low power consumption, and controllable size and geometry makes these 3D-printed devices ideal candidates for fast detection, as well as for acetone vapor monitoring (down to 100 ppm). This 3D-printing approach will pave a new way for many different devices through the simplicity and versatility of the fabrication method for the exact detection of acetone vapors in various atmospheres.
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Affiliation(s)
- Leonard Siebert
- Institute for Materials Science-Functional Nanomaterials, Faculty of Engineering , Kiel University , Kaiserstraße 2 , D-24143 Kiel , Germany
| | - Oleg Lupan
- Institute for Materials Science-Functional Nanomaterials, Faculty of Engineering , Kiel University , Kaiserstraße 2 , D-24143 Kiel , Germany
- Center for Nanotechnology and Nanosensors, Department of Microelectronics and Biomedical Engineering , Technical University of Moldova , 168 Stefan cel Mare Avenue , MD-2004 Chisinau , Republic of Moldova
| | - Mattia Mirabelli
- Institute for Materials Science-Functional Nanomaterials, Faculty of Engineering , Kiel University , Kaiserstraße 2 , D-24143 Kiel , Germany
| | - Nicolai Ababii
- Center for Nanotechnology and Nanosensors, Department of Microelectronics and Biomedical Engineering , Technical University of Moldova , 168 Stefan cel Mare Avenue , MD-2004 Chisinau , Republic of Moldova
| | - Maik-Ivo Terasa
- Institute for Materials Science-Functional Nanomaterials, Faculty of Engineering , Kiel University , Kaiserstraße 2 , D-24143 Kiel , Germany
| | - Sören Kaps
- Institute for Materials Science-Functional Nanomaterials, Faculty of Engineering , Kiel University , Kaiserstraße 2 , D-24143 Kiel , Germany
| | - Vasilii Cretu
- Center for Nanotechnology and Nanosensors, Department of Microelectronics and Biomedical Engineering , Technical University of Moldova , 168 Stefan cel Mare Avenue , MD-2004 Chisinau , Republic of Moldova
| | - Alexander Vahl
- Institute for Materials Science-Chair for Multicomponent Materials, Faculty of Engineering , Christian-Albrechts-University of Kiel , Kaiserstraße 2 , D-24143 Kiel , Germany
| | - Franz Faupel
- Institute for Materials Science-Chair for Multicomponent Materials, Faculty of Engineering , Christian-Albrechts-University of Kiel , Kaiserstraße 2 , D-24143 Kiel , Germany
| | - Rainer Adelung
- Institute for Materials Science-Functional Nanomaterials, Faculty of Engineering , Kiel University , Kaiserstraße 2 , D-24143 Kiel , Germany
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20
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Kalidoss R, Umapathy S. A comparison of online and offline measurement of exhaled breath for diabetes pre-screening by graphene-based sensor; from powder processing to clinical monitoring prototype. J Breath Res 2019; 13:036008. [PMID: 30794992 DOI: 10.1088/1752-7163/ab09ae] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Several breath analysis studies have suggested a correlation between blood glucose (BG) levels and breath acetone, indicating acetone as a primary biomarker in exhaled breath for diabetes diagnosis. Herein, we have (i) fabricated and validated graphene-based chemi-resistive sensors for selective and sensitive detection of acetone, (ii) performed offline breath analysis by a static gas sensing set-up to acquire olfactory signals, and (iii) developed an LED-based portable on/off binary e-nose system for pre-screening diabetes through online analysis. The fabricated sensors showed selective detection for acetone with high sensitivity (5.66 for 1 ppm acetone vapor) and fast response and recovery times (10 s and 12 s) at low concentrations. The sensor responses of end tidal fractional breath (collected in Tedlar bags) in the fasting and postprandial conditions were compared with BG levels and glycated hemoglobin (HbA1c) levels taken at the same time in 30 volunteers (13 healthy and 17 diabetic subjects). The mean sensor responses of the diabetic subjects as obtained by offline analysis were 1.1 times higher than those of the healthy subjects. The optimal regression equation framed with the significant correlating variables for HbA1c estimation achieved an accuracy of 66.67%. The online breath analysis by on/off binary prototype exhibited an accuracy of 60.51%. Though there exists a minimal uncertainty in classification, the on/off type portable prototype is easy to operate, gives a quicker response with a refresh/recovery rate of 19 s and can be used for preliminary diagnosis, and can be used for preliminary diagnosis. This inexpensive sensor technology may revolutionize personalized medicine in the near future and greatly benefit the underprivileged.
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Affiliation(s)
- Ramji Kalidoss
- Department of Biomedical Engineering, SRM Institute of Science & Technology, Tamil Nadu, 603203, India
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21
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Nasiri N, Clarke C. Nanostructured Chemiresistive Gas Sensors for Medical Applications. SENSORS 2019; 19:s19030462. [PMID: 30678070 PMCID: PMC6387115 DOI: 10.3390/s19030462] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 01/17/2019] [Accepted: 01/21/2019] [Indexed: 01/04/2023]
Abstract
Treating diseases at their earliest stages significantly increases the chance of survival while decreasing the cost of treatment. Therefore, compared to traditional blood testing methods it is the goal of medical diagnostics to deliver a technique that can rapidly predict and if required non-invasively monitor illnesses such as lung cancer, diabetes, melanoma and breast cancer at their very earliest stages, when the chance of recovery is significantly higher. To date human breath analysis is a promising candidate for fulfilling this need. Here, we highlight the latest key achievements on nanostructured chemiresistive sensors for disease diagnosis by human breath with focus on the multi-scale engineering of both composition and nano-micro scale morphology. We critically assess and compare state-of-the-art devices with the intention to provide direction for the next generation of chemiresistive nanostructured sensors.
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Affiliation(s)
- Noushin Nasiri
- School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney, NSW 2109, Australia.
| | - Christian Clarke
- Institute for Biomedical Materials and Devices, Faculty of Science, University of Technology Sydney, Sydney, NSW 2007, Australia.
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22
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Broza YY, Vishinkin R, Barash O, Nakhleh MK, Haick H. Synergy between nanomaterials and volatile organic compounds for non-invasive medical evaluation. Chem Soc Rev 2018; 47:4781-4859. [PMID: 29888356 DOI: 10.1039/c8cs00317c] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This article is an overview of the present and ongoing developments in the field of nanomaterial-based sensors for enabling fast, relatively inexpensive and minimally (or non-) invasive diagnostics of health conditions with follow-up by detecting volatile organic compounds (VOCs) excreted from one or combination of human body fluids and tissues (e.g., blood, urine, breath, skin). Part of the review provides a didactic examination of the concepts and approaches related to emerging sensing materials and transduction techniques linked with the VOC-based non-invasive medical evaluations. We also present and discuss diverse characteristics of these innovative sensors, such as their mode of operation, sensitivity, selectivity and response time, as well as the major approaches proposed for enhancing their ability as hybrid sensors to afford multidimensional sensing and information-based sensing. The other parts of the review give an updated compilation of the past and currently available VOC-based sensors for disease diagnostics. This compilation summarizes all VOCs identified in relation to sickness and sampling origin that links these data with advanced nanomaterial-based sensing technologies. Both strength and pitfalls are discussed and criticized, particularly from the perspective of the information and communication era. Further ideas regarding improvement of sensors, sensor arrays, sensing devices and the proposed workflow are also included.
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Affiliation(s)
- Yoav Y Broza
- Department of Chemical Engineering and Russell Berrie Nanotechnology Institute, Technion - Israel Institute of Technology, Haifa 3200003, Israel.
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23
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Lee J, Lim SH. CNT Foam-Embedded Micro Gas Preconcentrator for Low-Concentration Ethane Measurements. SENSORS 2018; 18:s18051547. [PMID: 29757966 PMCID: PMC5981372 DOI: 10.3390/s18051547] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 05/05/2018] [Accepted: 05/09/2018] [Indexed: 12/31/2022]
Abstract
Breath analysis has become increasingly important as a noninvasive process for the clinical diagnosis of patients suffering from various diseases. Many commercial gas preconcentration instruments are already being used to overcome the detection limits of commercial gas sensors for gas concentrations which are as low as ~100 ppb in exhaled breath. However, commercial instruments are large and expensive, and they require high power consumption and intensive maintenance. In the proposed study, a micro gas preconcentrator (μ-PC) filled with a carbon nanotube (CNT) foam as an adsorbing material was designed and fabricated for the detection of low-concentration ethane, which is known to be one of the most important biomarkers related to chronic obstructive pulmonary disease (COPD) and asthma. A comparison of the performance of two gas-adsorbing materials, i.e., the proposed CNT foam and commercial adsorbing material, was performed using the developed μ-PC. The experimental results showed that the synthesized CNT foam performs better than a commercial adsorbing material owing to its lower pressure drop and greater preconcentration efficiency in the μ-PC. The present results show that the application of CNT foam-embedded μ-PC in portable breath analysis systems holds great promise.
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Affiliation(s)
- Janghyeon Lee
- Department of Mechanics and Design, Kookmin University, Seoul 136-702, Korea.
| | - Si-Hyung Lim
- School of Mechanical Engineering, Kookmin University, Seoul 136-702, Korea.
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24
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Ksenofontov AA, Guseva GB, Stupikova SA, Antina EV. Novel Zinc(II) Bis(Dipyrromethenate)-Doped Ethyl Cellulose Sensors for Acetone Vapor Fluorescence Detection. J Fluoresc 2018; 28:477-482. [PMID: 29682675 DOI: 10.1007/s10895-018-2220-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Accepted: 03/12/2018] [Indexed: 12/16/2022]
Abstract
In this paper, we report on the results of spectrofluorimetric study of new fluorescent sensor based on [Zn2L2] doped in ethyl cellulose. The sensor optical signal is based on the rapid fluorescence quenching in the presence of acetone vapor. The acetone vapor detection limit in a gas mixture by means of sensor based on [Zn2L2] doped in ethyl cellulose is 1.68 ppb. Being highly sensitive to the acetone acetone presence, instant in response and easy to use, the sensor can find an application for the noninvasive diagnostics of diabetes as well as for the monitoring of the content of acetone acetone in the air at industrial and laboratory facilities. Graphical Abstract.
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Affiliation(s)
- Alexander A Ksenofontov
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, 1 Akademicheskaya Street, 153045, Ivanovo, Russia.
| | - Galina B Guseva
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, 1 Akademicheskaya Street, 153045, Ivanovo, Russia
| | - Svetlana A Stupikova
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, 1 Akademicheskaya Street, 153045, Ivanovo, Russia
- Ivanovo State University of Chemistry and Technology, 7, Sheremetievskiy Avenue, Ivanovo, 153000, Russia
| | - Elena V Antina
- G.A. Krestov Institute of Solution Chemistry of the Russian Academy of Sciences, 1 Akademicheskaya Street, 153045, Ivanovo, Russia
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25
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Miniaturized Bio-and Chemical-Sensors for Point-of-Care Monitoring of Chronic Kidney Diseases. SENSORS 2018; 18:s18040942. [PMID: 29565315 PMCID: PMC5948530 DOI: 10.3390/s18040942] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 03/15/2018] [Accepted: 03/20/2018] [Indexed: 01/14/2023]
Abstract
This review reports the latest achievements in point-of-care (POC) sensor technologies for the monitoring of ammonia, creatinine and urea in patients suffering of chronic kidney diseases (CKDs). Abnormal levels of these nitrogen biomarkers are found in the physiological fluids, such as blood, urine and sweat, of CKD patients. Delocalized at-home monitoring of CKD biomarkers via integration of miniaturized, portable, and low cost chemical- and bio-sensors in POC devices, is an emerging approach to improve patients’ health monitoring and life quality. The successful monitoring of CKD biomarkers, performed on the different body fluids by means of sensors having strict requirements in term of size, cost, large-scale production capacity, response time and simple operation procedures for use in POC devices, is reported and discussed.
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26
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Yucel M, Akin O, Cayoren M, Akduman I, Palaniappan A, Liedberg B, Hizal G, Inci F, Yildiz UH. Hand-Held Volatilome Analyzer Based on Elastically Deformable Nanofibers. Anal Chem 2018; 90:5122-5129. [DOI: 10.1021/acs.analchem.7b05187] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Muge Yucel
- Department of Biotechnology and Bioengineering, Izmir Institute of Technology, Izmir 35430, Turkey
| | - Osman Akin
- Department of Mechatronic Engineering, Izmir Katip Çelebi University, Izmir 35640, Turkey
| | - Mehmet Cayoren
- Department of Electronic and Communication, Istanbul Technical University, Istanbul 34398, Turkey
| | - Ibrahim Akduman
- Department of Electronic and Communication, Istanbul Technical University, Istanbul 34398, Turkey
| | - Alagappan Palaniappan
- Center for Biomimetic Sensor Science, School of Materials Science and Engineering, Nanyang Technological University, 637553 Singapore
| | - Bo Liedberg
- Center for Biomimetic Sensor Science, School of Materials Science and Engineering, Nanyang Technological University, 637553 Singapore
| | - Gurkan Hizal
- Department of Chemistry, Istanbul Technical University, Istanbul 34398, Turkey
| | - Fatih Inci
- Department of Radiology, Stanford University, School of Medicine, Canary Center at Stanford for Cancer Early Detection, Palo Alto, California 94304, United States
| | - Umit Hakan Yildiz
- Department of Chemistry, Izmir Institute of Technology, Izmir 35430, Turkey
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Chen H, Zhang M, Bo R, Barugkin C, Zheng J, Ma Q, Huang S, Ho-Baillie AWY, Catchpole KR, Tricoli A. Superior Self-Powered Room-Temperature Chemical Sensing with Light-Activated Inorganic Halides Perovskites. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14. [PMID: 29280263 DOI: 10.1002/smll.201702571] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 10/14/2017] [Indexed: 05/16/2023]
Abstract
Hybrid halide perovskite is one of the promising light absorber and is intensively investigated for many optoelectronic applications. Here, the first prototype of a self-powered inorganic halides perovskite for chemical gas sensing at room temperature under visible-light irradiation is presented. These devices consist of porous network of CsPbBr3 (CPB) and can generate an open-circuit voltage of 0.87 V under visible-light irradiation, which can be used to detect various concentrations of O2 and parts per million concentrations of medically relevant volatile organic compounds such as acetone and ethanol with very quick response and recovery time. It is observed that O2 gas can passivate the surface trap sites in CPB and the ambipolar charge transport in the perovskite layer results in a distinct sensing mechanism compared with established semiconductors with symmetric electrical response to both oxidizing and reducing gases. The platform of CPB-based gas sensor provides new insights for the emerging area of wearable sensors for personalized and preventive medicine.
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Affiliation(s)
- Hongjun Chen
- Nanotechnology Research Laboratory, Research School of Engineering, Australian National University, Canberra, 2601, Australia
| | - Meng Zhang
- Australian Centre for Advanced Photovoltaics, School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, 2052, Australia
| | - Renheng Bo
- Nanotechnology Research Laboratory, Research School of Engineering, Australian National University, Canberra, 2601, Australia
| | - Chog Barugkin
- Research School of Engineering, Australian National University, Canberra, 2601, Australia
| | - Jianghui Zheng
- Australian Centre for Advanced Photovoltaics, School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, 2052, Australia
| | - Qingshan Ma
- Australian Centre for Advanced Photovoltaics, School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, 2052, Australia
| | - Shujuan Huang
- Australian Centre for Advanced Photovoltaics, School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, 2052, Australia
| | - Anita W Y Ho-Baillie
- Australian Centre for Advanced Photovoltaics, School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, 2052, Australia
| | - Kylie R Catchpole
- Research School of Engineering, Australian National University, Canberra, 2601, Australia
| | - Antonio Tricoli
- Nanotechnology Research Laboratory, Research School of Engineering, Australian National University, Canberra, 2601, Australia
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Yoon JW, Lee JH. Toward breath analysis on a chip for disease diagnosis using semiconductor-based chemiresistors: recent progress and future perspectives. LAB ON A CHIP 2017; 17:3537-3557. [PMID: 28971204 DOI: 10.1039/c7lc00810d] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Semiconductor gas sensors using metal oxides, carbon nanotubes, graphene-based materials, and metal chalcogenides have been reviewed from the viewpoint of the sensitive, selective, and reliable detection of exhaled biomarker gases, and perspectives/strategies to realize breath analysis on a chip for disease diagnosis are discussed based on the concurrent design of high-performance sensing materials and miniaturized pretreatment components. Carbon-based sensing materials that show relatively high responses to NO and NH3 at low or mildly raised temperatures can be applied to the diagnosis of asthma and renal disease. Halitosis can be diagnosed by employing sensing or additive materials such as CuO and Mo that have high chemical affinities for H2S, while catalyst-loaded metal oxide nanostructure sensors or their arrays have been used to diagnose diabetes via the selective detection of acetone or by pattern recognition of sensor signals. For the ultimate miniaturization of a breath-analysis system into a tiny chip, preconditioning that includes preconcentration, dehumidification, and flow sensing needs to be either improved through the design of gas/moisture adsorbents or removed/simplified through the design of highly sensitive sensing materials that are less impervious to interference from humidity and temperature. Moreover, an abundant sensing library needs to be provided for the diagnosis of diseases (e.g. lung cancer) that are associated with multiple biomarker gases and for finding new methods to diagnose other diseases. For this aim, p-type oxide semiconductors with high catalytic activities, as well as combinatorial approaches, can be considered for the development of sensing materials that detect less-reactive large molecules, and high-throughput screening, respectively. Selectivity for a specific biomarker gas will simplify the system further. Breath analysis on a tiny chip using semiconductor chemiresistors with ultralow power consumption that is connected to the 'Internet of Things' will pave new roads for disease diagnosis and patient monitoring.
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Affiliation(s)
- Ji-Wook Yoon
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea.
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29
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Liu L, Zhang D, Zhang Q, Chen X, Xu G, Lu Y, Liu Q. Smartphone-based sensing system using ZnO and graphene modified electrodes for VOCs detection. Biosens Bioelectron 2017; 93:94-101. [DOI: 10.1016/j.bios.2016.09.084] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 09/22/2016] [Accepted: 09/24/2016] [Indexed: 10/21/2022]
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30
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Aksenov AA, Zamuruyev KO, Pasamontes A, Brown JF, Schivo M, Foutouhi S, Weimer BC, Kenyon NJ, Davis CE. Analytical methodologies for broad metabolite coverage of exhaled breath condensate. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1061-1062:17-25. [PMID: 28697414 DOI: 10.1016/j.jchromb.2017.06.038] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 06/05/2017] [Accepted: 06/07/2017] [Indexed: 01/12/2023]
Abstract
Breath analysis has been gaining popularity as a non-invasive technique that is amenable to a broad range of medical uses. One of the persistent problems hampering the wide application of the breath analysis method is measurement variability of metabolite abundances stemming from differences in both sampling and analysis methodologies used in various studies. Mass spectrometry has been a method of choice for comprehensive metabolomic analysis. For the first time in the present study, we juxtapose the most commonly employed mass spectrometry-based analysis methodologies and directly compare the resultant coverages of detected compounds in exhaled breath condensate in order to guide methodology choices for exhaled breath condensate analysis studies. Four methods were explored to broaden the range of measured compounds across both the volatile and non-volatile domain. Liquid phase sampling with polyacrylate Solid-Phase MicroExtraction fiber, liquid phase extraction with a polydimethylsiloxane patch, and headspace sampling using Carboxen/Polydimethylsiloxane Solid-Phase MicroExtraction (SPME) followed by gas chromatography mass spectrometry were tested for the analysis of volatile fraction. Hydrophilic interaction liquid chromatography and reversed-phase chromatography high performance liquid chromatography mass spectrometry were used for analysis of non-volatile fraction. We found that liquid phase breath condensate extraction was notably superior compared to headspace extraction and differences in employed sorbents manifested altered metabolite coverages. The most pronounced effect was substantially enhanced metabolite capture for larger, higher-boiling compounds using polyacrylate SPME liquid phase sampling. The analysis of the non-volatile fraction of breath condensate by hydrophilic and reverse phase high performance liquid chromatography mass spectrometry indicated orthogonal metabolite coverage by these chromatography modes. We found that the metabolite coverage could be enhanced significantly with the use of organic solvent as a device rinse after breath sampling to collect the non-aqueous fraction as opposed to neat breath condensate sample. Here, we show the detected ranges of compounds in each case and provide a practical guide for methodology selection for optimal detection of specific compounds.
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Affiliation(s)
- Alexander A Aksenov
- Mechanical and Aerospace Engineering, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA
| | - Konstantin O Zamuruyev
- Mechanical and Aerospace Engineering, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA
| | - Alberto Pasamontes
- Mechanical and Aerospace Engineering, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA
| | - Joshua F Brown
- Mechanical and Aerospace Engineering, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA
| | - Michael Schivo
- Department of Internal Medicine, 4150 V Street, Suite 3400, University of California, Davis, Sacramento, CA 95817, USA; Center for Comparative Respiratory Biology and Medicine, University of California, Davis, CA 95616, USA
| | - Soraya Foutouhi
- School of Veterinary Medicine,1089 Veterinary Medicine Drive, University of California, Davis, Davis, CA 95616, USA
| | - Bart C Weimer
- School of Veterinary Medicine,1089 Veterinary Medicine Drive, University of California, Davis, Davis, CA 95616, USA
| | - Nicholas J Kenyon
- Department of Internal Medicine, 4150 V Street, Suite 3400, University of California, Davis, Sacramento, CA 95817, USA; Center for Comparative Respiratory Biology and Medicine, University of California, Davis, CA 95616, USA
| | - Cristina E Davis
- Mechanical and Aerospace Engineering, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA.
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31
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Shokry E, de Oliveira AE, Avelino MAG, de Deus MM, Filho NRA. Earwax: A neglected body secretion or a step ahead in clinical diagnosis? A pilot study. J Proteomics 2017; 159:92-101. [DOI: 10.1016/j.jprot.2017.03.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 02/25/2017] [Accepted: 03/07/2017] [Indexed: 12/16/2022]
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32
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Filipiak W, Mochalski P, Filipiak A, Ager C, Cumeras R, Davis CE, Agapiou A, Unterkofler K, Troppmair J. A Compendium of Volatile Organic Compounds (VOCs) Released By Human Cell Lines. Curr Med Chem 2017; 23:2112-31. [PMID: 27160536 PMCID: PMC5086670 DOI: 10.2174/0929867323666160510122913] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 05/02/2016] [Accepted: 05/10/2016] [Indexed: 12/18/2022]
Abstract
Volatile organic compounds (VOCs) offer unique insights into ongoing biochemical processes in healthy and diseased humans. Yet, their diagnostic use is hampered by the limited understanding of their biochemical or cellular origin and their frequently unclear link to the underlying diseases. Major advancements are expected from the analyses of human primary cells, cell lines and cultures of microorganisms. In this review, a database of 125 reliably identified VOCs previously reported for human healthy and diseased cells was assembled and their potential origin is discussed. The majority of them have also been observed in studies with other human matrices (breath, urine, saliva, feces, blood, skin emanations). Moreover, continuing improvements of qualitative and quantitative analyses, based on the recommendations of the ISO-11843 guidelines, are suggested for the necessary standardization of analytical procedures and better comparability of results. The data provided contribute to arriving at a more complete human volatilome and suggest potential volatile biomarkers for future validation. Dedication: This review is dedicated to the memory of Prof. Dr. Anton Amann, who sadly passed away on January 6, 2015. He was motivator and motor for the field of breath research.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Jakob Troppmair
- Daniel Swarovski Research Laboratory, Department of Visceral-, Transplant- and Thoracic Surgery, Innsbruck Medical University, Innsbruck, Austria.
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33
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Blaikie TPJ, Couper J, Hancock G, Hurst PL, Peverall R, Richmond G, Ritchie GAD, Taylor D, Valentine K. Portable Device for Measuring Breath Acetone Based on Sample Preconcentration and Cavity Enhanced Spectroscopy. Anal Chem 2016; 88:11016-11021. [PMID: 27753485 DOI: 10.1021/acs.analchem.6b02837] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A portable and compact device is demonstrated for measuring acetone in breath samples. The device features a 7 cm long high finesse optical cavity as an optical sensor that is coupled to a miniature adsorption preconcentrator containing 0.5 g of polymer material. Acetone is trapped out of breath and released into the optical cavity where it is probed by a near-infrared diode laser operating at ∼1670 nm. With an optical cavity mirror reflectivity of 99.994%, a limit of detection of 159 ppbv (1σ) is demonstrated on samples from breath bags. Initial results on direct breath sampling are presented with a precision of 100 ppbv. The method is validated with measurements made using an ion-molecule reaction mass spectrometer. Data are presented on elevated breath acetone from two individuals following an overnight fast and exercise, and from a third individual during several days of routine behavior.
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Affiliation(s)
- Thomas P J Blaikie
- Oxford Medical Diagnostics, Ltd. , Centre for Innovation and Enterprise, Begbroke Science Park, Begbroke Hill, Begbroke OX5 1PF, United Kingdom
| | | | | | | | | | | | | | - David Taylor
- Oxford Medical Diagnostics, Ltd. , Centre for Innovation and Enterprise, Begbroke Science Park, Begbroke Hill, Begbroke OX5 1PF, United Kingdom
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34
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Buryakov IA, Buryakov TI, Matsayev VT. Electrical, electrochemical, and thermometric sensors for the detection of explosives. JOURNAL OF ANALYTICAL CHEMISTRY 2016. [DOI: 10.1134/s1061934816030023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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35
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Kim JH, Wu P, Kim HW, Kim SS. Highly Selective Sensing of CO, C6H6, and C7H8 Gases by Catalytic Functionalization with Metal Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2016; 8:7173-83. [PMID: 26947256 DOI: 10.1021/acsami.6b01116] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We have fabricated multiple networked SnO2 nanowires and subsequently decorated them with uniformly distributed metal nanoparticles (NPs). The sensing tests indicated that the Pt-, Pd-, and Au-decorated SnO2 nanowires exhibited excellent sensing behavior, specifically for C7H8, C6H6, and CO gases, respectively. We discussed the associated sensing mechanisms in regard to the selective catalytic effects of metal NPs. In addition, by means of d-band theory, we explained the catalytic capabilities of each metal and proposed design principles for exploring new catalytic metals. The present study will pave the way for further development of high-selectivity sensors.
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Affiliation(s)
- Jae-Hun Kim
- Department of Materials Science and Engineering, Inha University , Incheon 402-751, Republic of Korea
| | - Ping Wu
- Entropic Interface Group, Singapore University of Technology & Design , Singapore 487372, Singapore
| | - Hyoun Woo Kim
- Division of Materials Science and Engineering, Hanyang University , Seoul 133-791, Republic of Korea
| | - Sang Sub Kim
- Department of Materials Science and Engineering, Inha University , Incheon 402-751, Republic of Korea
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36
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Galstyan V, Comini E, Kholmanov I, Ponzoni A, Sberveglieri V, Poli N, Faglia G, Sberveglieri G. A composite structure based on reduced graphene oxide and metal oxide nanomaterials for chemical sensors. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2016; 7:1421-1427. [PMID: 27826516 PMCID: PMC5082476 DOI: 10.3762/bjnano.7.133] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Accepted: 09/19/2016] [Indexed: 05/19/2023]
Abstract
A hybrid nanostructure based on reduced graphene oxide and ZnO has been obtained for the detection of volatile organic compounds. The sensing properties of the hybrid structure have been studied for different concentrations of ethanol and acetone. The response of the hybrid material is significantly higher compared to pristine ZnO nanostructures. The obtained results have shown that the nanohybrid is a promising structure for the monitoring of environmental pollutants and for the application of breath tests in assessment of exposure to volatile organic compounds.
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Affiliation(s)
- Vardan Galstyan
- Sensor Lab, CNR, National Institute of Optics (INO), Via Valotti 9, 25133 Brescia, Italy
- Sensor Lab, Department of Information Engineering, University of Brescia, Via Valotti 9, 25133 Brescia, Italy
| | - Elisabetta Comini
- Sensor Lab, CNR, National Institute of Optics (INO), Via Valotti 9, 25133 Brescia, Italy
- Sensor Lab, Department of Information Engineering, University of Brescia, Via Valotti 9, 25133 Brescia, Italy
| | - Iskandar Kholmanov
- Sensor Lab, CNR, National Institute of Optics (INO), Via Valotti 9, 25133 Brescia, Italy
- Department of Mechanical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
| | - Andrea Ponzoni
- Sensor Lab, CNR, National Institute of Optics (INO), Via Valotti 9, 25133 Brescia, Italy
- Sensor Lab, Department of Information Engineering, University of Brescia, Via Valotti 9, 25133 Brescia, Italy
| | - Veronica Sberveglieri
- Sensor Lab, CNR, National Institute of Optics (INO), Via Valotti 9, 25133 Brescia, Italy
| | - Nicola Poli
- Sensor Lab, Department of Information Engineering, University of Brescia, Via Valotti 9, 25133 Brescia, Italy
| | - Guido Faglia
- Sensor Lab, CNR, National Institute of Optics (INO), Via Valotti 9, 25133 Brescia, Italy
- Sensor Lab, Department of Information Engineering, University of Brescia, Via Valotti 9, 25133 Brescia, Italy
| | - Giorgio Sberveglieri
- Sensor Lab, CNR, National Institute of Optics (INO), Via Valotti 9, 25133 Brescia, Italy
- Sensor Lab, Department of Information Engineering, University of Brescia, Via Valotti 9, 25133 Brescia, Italy
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37
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Raliya R, Singh Chadha T, Haddad K, Biswas P. Perspective on Nanoparticle Technology for Biomedical Use. Curr Pharm Des 2016; 22:2481-90. [PMID: 26951098 PMCID: PMC4930863 DOI: 10.2174/1381612822666160307151409] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 03/04/2016] [Indexed: 12/20/2022]
Abstract
This review gives a short overview on the widespread use of nanostructured and nanocomposite materials for disease diagnostics, drug delivery, imaging and biomedical sensing applications. Nanoparticle interaction with a biological matrix/entity is greatly influenced by its morphology, crystal phase, surface chemistry, functionalization, physicochemical and electronic properties of the particle. Various nanoparticle synthesis routes, characterization, and functionalization methodologies to be used for biomedical applications ranging from drug delivery to molecular probing of underlying mechanisms and concepts are described with several examples (150 references).
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Affiliation(s)
| | | | | | - Pratim Biswas
- School of Engineering and Applied Science, Washington University in St. Louis, St. Louis, MO-63130, USA.
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38
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Righettoni M, Ragnoni A, Güntner AT, Loccioni C, Pratsinis SE, Risby TH. Monitoring breath markers under controlled conditions. J Breath Res 2015; 9:047101. [DOI: 10.1088/1752-7155/9/4/047101] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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39
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Nayak AK, Ghosh R, Santra S, Guha PK, Pradhan D. Hierarchical nanostructured WO3-SnO2 for selective sensing of volatile organic compounds. NANOSCALE 2015; 7:12460-73. [PMID: 26134476 DOI: 10.1039/c5nr02571k] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
It remains a challenge to find a suitable gas sensing material that shows a high response and shows selectivity towards various gases simultaneously. Here, we report a mixed metal oxide WO3-SnO2 nanostructured material synthesized in situ by a simple, single-step, one-pot hydrothermal method at 200 °C in 12 h, and demonstrate its superior sensing behavior towards volatile organic compounds (VOCs) such as ammonia, ethanol and acetone. SnO2 nanoparticles with controlled size and density were uniformly grown on WO3 nanoplates by varying the tin precursor. The density of the SnO2 nanoparticles on the WO3 nanoplates plays a crucial role in the VOC selectivity. The responses of the present mixed metal oxides are found to be much higher than the previously reported results based on single/mixed oxides and noble metal-doped oxides. In addition, the VOC selectivity is found to be highly temperature-dependent, with optimum performance obtained at 200 °C, 300 °C and 350 °C for ammonia, ethanol and acetone, respectively. The present results on the cost-effective noble metal-free WO3-SnO2 sensor could find potential application in human breath analysis by non-invasive detection.
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Affiliation(s)
- Arpan Kumar Nayak
- Materials Science Centre, Indian Institute of Technology, Kharagpur, W. B. 721 302, India.
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40
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An acetone bio-sniffer (gas phase biosensor) enabling assessment of lipid metabolism from exhaled breath. Biosens Bioelectron 2015; 73:208-213. [PMID: 26079672 DOI: 10.1016/j.bios.2015.04.023] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 04/09/2015] [Accepted: 04/10/2015] [Indexed: 12/28/2022]
Abstract
Several volatile organic compounds (VOCs) are released from human breath or skin. Like chemical substances in blood or urine, some of these vapors can provide valuable information regarding the state of the human body. A highly sensitive acetone biochemical gas sensor (bio-sniffer) was developed and used to measure exhaled breath acetone concentration, and assess lipid metabolism based on breath acetone analysis. A fiber-optic biochemical gas sensing system was constructed by attaching a flow-cell with nicotinamide adenine dinucleotide (NADH)-dependent secondary alcohol dehydrogenase (S-ADH) immobilized membrane onto a fiber-optic NADH measurement system. The NADH measurement system utilizes an ultraviolet-light emitting diode with peak emission of 335 nm as an excitation light source. NADH is consumed by the enzymatic reaction of S-ADH, and the consumption is proportional to the concentration of acetone vapor. Phosphate buffer which contained NADH was circulated into the flow-cell to rinse products and the excessive substrates from the optode. The change of fluorescent emitted from NADH is analyzed by the PMT. Hence, fluorescence intensity decreased as the acetone concentration increased. The relationship between fluorescence intensity and acetone concentration was identified from 20 ppb to 5300 ppb. This interval included the concentration of acetone vapor in the breath of healthy people and those suffering from disorders of carbohydrate metabolism. Finally, the acetone bio-sniffer was used to measure breath acetone during an exercise stress test on an ergometer after a period of fasting. The concentration of acetone in breath was shown to significantly increase after exercise. This biosensor allows rapid, highly sensitive and selective measurement of lipid metabolism.
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41
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Obermeier J, Trefz P, Wex K, Sabel B, Schubert JK, Miekisch W. Electrochemical sensor system for breath analysis of aldehydes, CO and NO. J Breath Res 2015; 9:016008. [PMID: 25749754 DOI: 10.1088/1752-7155/9/1/016008] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Bulky and hyphenated laboratory-based analytical instrumentation such as gas chromatography/mass spectrometry is still required to trace breath biomarkers in the low ppbV level. Innovative sensor-based technologies could provide on-site and point-of-care (POC) detection of volatile biomarkers such as breath aldehydes related to oxidative stress and cancer. An electrochemical sensor system was developed for direct detection of the total abundance of aldehydes in exhaled breath in the ppbV level and for simultaneous determination of the airway inflammation markers carbon monoxide (CO) and nitric oxide (NO). The sensor system was tested in vitro with gaseous standard mixtures and in vivo in spontaneously breathing patients and under mechanical ventilation in an animal model. The sensor system provided in vitro and in vivo detection of trace levels of aldehydes, CO and NO. Inertness of the tubing system was important for reliable results. Sensitivity of the aldehyde sensor increased with humidity. Response time for analysis of breath samples was about 22 s and relative standard deviations of sensor amplitudes were <5%. Detection limits in the low ppbV range and a linear range of more than two orders of magnitude could be achieved for volatile aldehydes. Cross sensitivities were moderate for alcohols such as ethanol or isopropanol and negligible for other typical breath volatile organic compounds such as acetone, isoprene or propofol. In proof of concept analyses in patients suffering from lung cancer and diabetes, aldehyde and CO sensor signals differed between the groups. Elevated CO levels indicated previous smoking. In a mechanically ventilated pig, continuous monitoring of breath aldehyde concentrations in the low ppbV was realized. Cumulative aldehyde measurements may add interesting and complementary information to the conventional parameters used in clinical breath research. POC applicability, easy handling and low cost of sensors facilitate measurements in large patient cohorts.
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Affiliation(s)
- J Obermeier
- Department of Anaesthesiology and Intensive Care, University Medical Center Rostock, Schillingallee 70, 18057 Rostock, Germany
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42
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Zhang Z, Wen Z, Ye Z, Zhu L. Gas sensors based on ultrathin porous Co3O4 nanosheets to detect acetone at low temperature. RSC Adv 2015. [DOI: 10.1039/c5ra08536e] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Gas sensors based on ultrathin porous Co3O4 nanosheets to detect acetone for diagnosing diabetes at a low operating temperature.
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Affiliation(s)
- Ziyue Zhang
- School of Materials Science and Engineering
- Zhejiang University
- China
- State Key Laboratory of Silicon Materials
- Hangzhou 310027
| | - Zhen Wen
- School of Materials Science and Engineering
- Zhejiang University
- China
- State Key Laboratory of Silicon Materials
- Hangzhou 310027
| | - Zhizhen Ye
- School of Materials Science and Engineering
- Zhejiang University
- China
- State Key Laboratory of Silicon Materials
- Hangzhou 310027
| | - Liping Zhu
- School of Materials Science and Engineering
- Zhejiang University
- China
- State Key Laboratory of Silicon Materials
- Hangzhou 310027
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Reyes-Reyes A, Horsten RC, Urbach HP, Bhattacharya N. Study of the Exhaled Acetone in Type 1 Diabetes Using Quantum Cascade Laser Spectroscopy. Anal Chem 2014; 87:507-12. [DOI: 10.1021/ac504235e] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Adonis Reyes-Reyes
- Optics Research Group, Faculty
of Applied Sciences, Delft University of Technology, Lorentzweg
1, 2628 CJ Delft, The Netherlands
| | - Roland C. Horsten
- Optics Research Group, Faculty
of Applied Sciences, Delft University of Technology, Lorentzweg
1, 2628 CJ Delft, The Netherlands
| | - H. Paul Urbach
- Optics Research Group, Faculty
of Applied Sciences, Delft University of Technology, Lorentzweg
1, 2628 CJ Delft, The Netherlands
| | - Nandini Bhattacharya
- Optics Research Group, Faculty
of Applied Sciences, Delft University of Technology, Lorentzweg
1, 2628 CJ Delft, The Netherlands
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Blaikie TPJ, Edge JA, Hancock G, Lunn D, Megson C, Peverall R, Richmond G, Ritchie GAD, Taylor D. Comparison of breath gases, including acetone, with blood glucose and blood ketones in children and adolescents with type 1 diabetes. J Breath Res 2014; 8:046010. [PMID: 25422916 DOI: 10.1088/1752-7155/8/4/046010] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Previous studies have suggested that breath gases may be related to simultaneous blood glucose and blood ketone levels in adults with type 2 and type 1 diabetes. The aims of this study were to investigate these relationships in children and young people with type 1 diabetes in order to assess the efficacy of a simple breath test as a non-invasive means of diabetes management. Gases were collected in breath bags and measurements were compared with capillary blood glucose and ketone levels taken at the same time on a single visit to a routine hospital clinic in 113 subjects (59 male, age 7 years 11 months-18 years 3 months) with type 1 diabetes. The patients were well-controlled with relatively low concentrations of the blood ketone measured (β hydroxybutyrate, 0-0.4 mmol l(-1)). Breath acetone levels were found to increase with blood β hydroxybutyrate levels and a significant relationship was found between the two (Spearman's rank correlation ρ = 0.364, p < 10(-4)). A weak positive relationship was found between blood glucose and breath acetone (ρ = 0.16, p = 0.1), but led to the conclusion that single breath measurements of acetone do not provide a good measure of blood glucose levels in this cohort. This result suggests a potential to develop breath gas analysis to provide an alternative to blood testing for ketone measurement, for example to assist with the management of type 1 diabetes.
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Affiliation(s)
- Tom P J Blaikie
- Centre for Innovation and Enterprise, Oxford Medical Diagnostics Ltd, Begbroke Science Park, Begbroke Hill, Begbroke OX5 1PF, UK
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Hancock G, Langley CE, Peverall R, Ritchie GAD, Taylor D. Laser-based method and sample handling protocol for measuring breath acetone. Anal Chem 2014; 86:5838-43. [PMID: 24831456 DOI: 10.1021/ac500614n] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A robust method is demonstrated to measure acetone in human breath at sub parts-per-million by volume (ppmv) concentrations using diode laser cavity enhanced absorption spectroscopy. The laser operates in the near-infrared at about 1690 nm probing overtone transitions in acetone in a spectral region relatively free from interference from common breath species such as CO2, water, and methane. Using an optical cavity with a length of 45 cm, bound by mirrors of 99.997% reflectivity, a limit of detection of ∼180 parts-per-billion by volume (ppbv) (1σ) of breath acetone is achieved. The method is validated with measurements made with an ion-molecule reaction mass spectrometer. A technique to calibrate the optical cavity mirror reflectivity using a temperature dependent water vapor source is also described.
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Affiliation(s)
- Gus Hancock
- Department of Chemistry, Physical and Theoretical Chemistry Laboratory, University of Oxford , South Parks Road, Oxford, OX1 3QZ, United Kingdom
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Choi KI, Hwang SJ, Dai Z, Chan Kang Y, Lee JH. Rh-catalyzed WO3 with anomalous humidity dependence of gas sensing characteristics. RSC Adv 2014. [DOI: 10.1039/c4ra06654e] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
An anomalous humidity dependence of gas sensing characteristics is found for a Rh-loaded WO3 sensor, where the resistance and gas response increased in humid atmospheres.
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Affiliation(s)
- Kwon-Il Choi
- Department of Materials Science and Engineering
- Korea University
- Seoul 136-713, Republic of Korea
| | - Su-Jin Hwang
- Department of Materials Science and Engineering
- Korea University
- Seoul 136-713, Republic of Korea
| | - Zhengfei Dai
- Department of Materials Science and Engineering
- Korea University
- Seoul 136-713, Republic of Korea
| | - Yun Chan Kang
- Department of Materials Science and Engineering
- Korea University
- Seoul 136-713, Republic of Korea
| | - Jong-Heun Lee
- Department of Materials Science and Engineering
- Korea University
- Seoul 136-713, Republic of Korea
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Smith D, Španěl P, Gilchrist FJ, Lenney W. Hydrogen cyanide, a volatile biomarker of
Pseudomonas aeruginosa
infection. J Breath Res 2013; 7:044001. [DOI: 10.1088/1752-7155/7/4/044001] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Righettoni M, Schmid A, Amann A, Pratsinis SE. Correlations between blood glucose and breath components from portable gas sensors and PTR-TOF-MS. J Breath Res 2013; 7:037110. [DOI: 10.1088/1752-7155/7/3/037110] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Toyooka T, Hiyama S, Yamada Y. A prototype portable breath acetone analyzer for monitoring fat loss. J Breath Res 2013; 7:036005. [PMID: 23883482 DOI: 10.1088/1752-7155/7/3/036005] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Acetone contained in our exhaled breath is a metabolic product of the breakdown of body fat and is expected to be a good indicator of fat-burning. Typically, gas chromatography or mass spectrometry are used to measure low-concentration compounds in breath but such large instruments are not suitable for daily use by diet-conscious people. Here, we prototype a portable breath acetone analyzer that has two types of semiconductor-based gas sensors with different sensitivity characteristics, enabling the acetone concentration to be calculated while taking into account the presence of ethanol, hydrogen, and humidity. To investigate the accuracy of our prototype and its application in diet support, experiments were conducted on healthy adult volunteers. Breath acetone concentrations obtained from our prototype and from gas chromatography showed a strong correlation throughout the experiments. Moreover, body fat in subjects with a controlled caloric intake and taking exercise decreased significantly, whereas breath acetone concentrations in those subjects increased significantly. These results prove that our prototype is practical and useful for self-monitoring of fat-burning at home or outside. Our prototype will help to prevent and alleviate obesity and diabetes.
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Affiliation(s)
- Tsuguyoshi Toyooka
- Research Laboratories, NTT DOCOMO, Inc., 3-6 Hikarinooka, Yokosuka, 239-8536, Japan.
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