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Maier C, Egger L, Köck A, Reichmann K. A Review of Gas Sensors for CO 2 Based on Copper Oxides and Their Derivatives. SENSORS (BASEL, SWITZERLAND) 2024; 24:5469. [PMID: 39275379 DOI: 10.3390/s24175469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2024] [Revised: 07/26/2024] [Accepted: 07/29/2024] [Indexed: 09/16/2024]
Abstract
Buildings worldwide are becoming more thermally insulated, and air circulation is being reduced to a minimum. As a result, measuring indoor air quality is important to prevent harmful concentrations of various gases that can lead to safety risks and health problems. To measure such gases, it is necessary to produce low-cost and low-power-consuming sensors. Researchers have been focusing on semiconducting metal oxide (SMOx) gas sensors that can be combined with intelligent technologies such as smart homes, smart phones or smart watches to enable gas sensing anywhere and at any time. As a type of SMOx, p-type gas sensors are promising candidates and have attracted more interest in recent years due to their excellent electrical properties and stability. This review paper gives a short overview of the main development of sensors based on copper oxides and their composites, highlighting their potential for detecting CO2 and the factors influencing their performance.
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Affiliation(s)
- Christian Maier
- Materials Center Leoben Forschung GmbH, Roseggerstrasse 12, 8700 Leoben, Austria
- Institute for Chemistry and Technology of Materials, TU Graz, Stremayrgasse 9, 8010 Graz, Austria
| | - Larissa Egger
- Materials Center Leoben Forschung GmbH, Roseggerstrasse 12, 8700 Leoben, Austria
| | - Anton Köck
- Materials Center Leoben Forschung GmbH, Roseggerstrasse 12, 8700 Leoben, Austria
| | - Klaus Reichmann
- Institute for Chemistry and Technology of Materials, TU Graz, Stremayrgasse 9, 8010 Graz, Austria
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2
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Mosaferi M, Céolin D, Rueff JP, Selles P, Odelius M, Björneholm O, Öhrwall G, Carniato S. Fingerprint of Dipole Moment Orientation of Water Molecules in Cu 2+ Aqueous Solution Probed by X-ray Photoelectron Spectroscopy. J Am Chem Soc 2024; 146:9836-9850. [PMID: 38545903 DOI: 10.1021/jacs.3c14570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
The electronic structure and geometrical organization of aqueous Cu2+ have been investigated by using X-ray photoelectron spectroscopy (XPS) at the Cu L-edge combined with state-of-the-art ab initio molecular dynamics and a quantum molecular approach designed to simulate the Cu 2p X-ray photoelectron spectrum. The calculations offer a comprehensive insight into the origin of the main peak and satellite features. It is illustrated how the energy drop of the Cu 3d levels (≈7 eV) following the creation of the Cu 2p core hole switches the nature of the highest singly occupied molecular orbitals (MOs) from the dominant metal to the dominant MO nature of water. It is particularly revealed how the repositioning of the Cu 3d levels induces the formation of new bonding (B) and antibonding (AB) orbitals, from which shakeup mechanisms toward the relaxed H-SOMO operate. As highlighted in this study, the appearance of the shoulder near the main peak corresponds to the characteristic signature of shakeup intraligand (1a1 → H-SOMO(1b1)) excitations in water, providing insights into the average dipole moment distribution (≈36°) of the first-shell water molecules surrounding the metal ion and its direct impact on the broadening of the satellite. It is also revealed that the main satellite at 8 eV from the main peak corresponds to (metal/1b2 → H-SOMO(1b1) of water) excitations due to a bonding/antibonding (B/AB) interaction of Cu 3d levels with the deepest valence O2p/H1s 1b2 orbitals of water. This finding underscores the sensitivity of XPS to the electronic structure and orientation of the nearest water molecules around the central ion.
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Affiliation(s)
- Mohammadreza Mosaferi
- Laboratoire de Chimie Physique, Matière et Rayonnement, UMR 7614, Sorbonne Université, 4 Place Jussieu, 75231 Paris Cedex 05, France
| | - Denis Céolin
- Synchrotron SOLEIL, L'Orme des Merisiers, BP 48, St Aubin, 91192 Gif sur Yvette, France
| | - Jean-Pascal Rueff
- Synchrotron SOLEIL, L'Orme des Merisiers, BP 48, St Aubin, 91192 Gif sur Yvette, France
| | - Patricia Selles
- Laboratoire de Chimie Physique, Matière et Rayonnement, UMR 7614, Sorbonne Université, 4 Place Jussieu, 75231 Paris Cedex 05, France
| | - Michael Odelius
- Department of Physics, Stockholm University, AlbaNova University Center, 106 91 Stockholm, Sweden
| | - Olle Björneholm
- Department of Physics and Astronomy, Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - Gunnar Öhrwall
- MAX IV Laboratory, Lund University, Box 118, SE-22100 Lund, Sweden
| | - Stéphane Carniato
- Laboratoire de Chimie Physique, Matière et Rayonnement, UMR 7614, Sorbonne Université, 4 Place Jussieu, 75231 Paris Cedex 05, France
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3
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Sosada-Ludwikowska F, Reiner L, Egger L, Lackner E, Krainer J, Wimmer-Teubenbacher R, Singh V, Steinhauer S, Grammatikopoulos P, Koeck A. Adjusting surface coverage of Pt nanocatalyst decoration for selectivity control in CMOS-integrated SnO 2 thin film gas sensors. NANOSCALE ADVANCES 2024; 6:1127-1134. [PMID: 38356629 PMCID: PMC10863709 DOI: 10.1039/d3na00552f] [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: 07/25/2023] [Accepted: 01/13/2024] [Indexed: 02/16/2024]
Abstract
Smart gas-sensor devices are of crucial importance for emerging consumer electronics and Internet-of-Things (IoT) applications, in particular for indoor and outdoor air quality monitoring (e.g., CO2 levels) or for detecting pollutants harmful for human health. Chemoresistive nanosensors based on metal-oxide semiconductors are among the most promising technologies due to their high sensitivity and suitability for scalable low-cost fabrication of miniaturised devices. However, poor selectivity between different target analytes restrains this technology from broader applicability. This is commonly addressed by chemical functionalisation of the sensor surface via catalytic nanoparticles. Yet, while the latter led to significant advances in gas selectivity, nanocatalyst decoration with precise size and coverage control remains challenging. Here, we present CMOS-integrated gas sensors based on tin oxide (SnO2) films deposited by spray pyrolysis technology, which were functionalised with platinum (Pt) nanocatalysts. We deposited size-selected Pt nanoparticles (narrow size distribution around 3 nm) by magnetron-sputtering inert-gas condensation, a technique which enables straightforward surface coverage control. The resulting impact on SnO2 sensor properties for CO and volatile organic compound (VOC) detection via functionalisation was investigated. We identified an upper threshold for nanoparticle deposition time above which increased surface coverage did not result in further CO or VOC sensitivity enhancement. Most importantly, we demonstrate a method to adjust the selectivity between these target gases by simply adjusting the Pt nanoparticle deposition time. Using a simple computational model for nanocatalyst coverage resulting from random gas-phase deposition, we support our findings and discuss the effects of nanoparticle coalescence as well as inter-particle distances on sensor functionalisation.
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Affiliation(s)
| | - L Reiner
- Materials Center Leoben Forschung GmbH 8700 Leoben Austria
| | - L Egger
- Materials Center Leoben Forschung GmbH 8700 Leoben Austria
| | - E Lackner
- Materials Center Leoben Forschung GmbH 8700 Leoben Austria
| | - J Krainer
- Materials Center Leoben Forschung GmbH 8700 Leoben Austria
| | | | - V Singh
- Nanoparticles by Design Unit, Okinawa Institute of Science and Technology (OIST), Graduate University 904-0495 Okinawa Japan
| | - S Steinhauer
- Department of Applied Physics, KTH Royal Institute of Technology 106 91 Stockholm Sweden
| | - P Grammatikopoulos
- Materials Science and Engineering, Guangdong Technion - Israel Institute of Technology Shantou Guangdong 515063 China
- Guangdong Provincial Key Laboratory of Materials and Technologies for Energy Conversion, Guangdong Technion - Israel Institute of Technology Shantou Guangdong 515063 China
| | - A Koeck
- Materials Center Leoben Forschung GmbH 8700 Leoben Austria
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4
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Ghadage P, Shinde KP, Nadargi D, Nadargi J, Shaikh H, Alam MA, Mulla I, Tamboli MS, Park JS, Suryavanshi S. Bismuth ferrite based acetone gas sensor: evaluation of graphene oxide loading. RSC Adv 2024; 14:1367-1376. [PMID: 38174272 PMCID: PMC10763655 DOI: 10.1039/d3ra06733e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 12/18/2023] [Indexed: 01/05/2024] Open
Abstract
We report a BiFeO3/graphene oxide (BFO/GO) perovskite, synthesized using a CTAB-functionalized glycine combustion route, as a potential material for acetone gas sensing applications. The physicochemical properties of the developed perovskite were analysed using XRD, FE-SEM, TEM, HRTEM, EDAX and XPS. The gas sensing performance was analysed for various test gases, including ethanol, acetone, propanol, ammonia, nitric acid, hydrogen sulphide and trimethylamine at a concentration of 500 ppm. Among the test gases, the developed BFO showed the best selectivity towards acetone, with a response of 61% at an operating temperature of 250 °C. All the GO-loaded BFO samples showed an improved gas sensing performance compared with pristine BFO in terms of sensitivity, the response/recovery times, the transient response curves and the stability. The 1 wt% GO-loaded BiFeO3 sensor showed the highest sensitivity of 89% towards acetone (500 ppm) at an operating temperature of 250 °C. These results show that the developed perovskites have significant potential for use in acetone gas sensing applications.
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Affiliation(s)
- Pandurang Ghadage
- School of Physical Sciences, Punyashlok Ahilyadevi Holkar Solapur University Solapur 413255 India
| | - K P Shinde
- Department of Materials Science and Engineering, Hanbat National University Daejeon 34158 South Korea
| | - Digambar Nadargi
- School of Physical Sciences, Punyashlok Ahilyadevi Holkar Solapur University Solapur 413255 India
- Centre for Materials for Electronics Technology, C-MET Thrissur 680581 India
| | - Jyoti Nadargi
- Department of Physics, Santosh Bhimrao Patil College Mandrup Solapur 413221 India
| | - Hamid Shaikh
- SABIC Polymer Research Centre, Department of Chemical Engineering, King Saud University P.O. Box 800 Riyadh 11421 Saudi Arabia
| | - Mohammad Asif Alam
- Center of Excellence for Research in Engineering Materials (CEREM), King Saud University P.O. Box 800 Riyadh 11421 Saudi Arabia
| | - Imtiaz Mulla
- Former Emeritus Scientist (CSIR), NCL Pune 411008 India
| | - Mohaseen S Tamboli
- Korea Institute of Energy Technology (KENTECH) 21 KENTECH-gil Naju Jeollanam-do 58330 Republic of Korea
| | - J S Park
- Department of Materials Science and Engineering, Hanbat National University Daejeon 34158 South Korea
| | - Sharad Suryavanshi
- School of Physical Sciences, Punyashlok Ahilyadevi Holkar Solapur University Solapur 413255 India
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5
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Miao R, Bissoli M, Basagni A, Marotta E, Corni S, Amendola V. Data-Driven Predetermination of Cu Oxidation State in Copper Nanoparticles: Application to the Synthesis by Laser Ablation in Liquid. J Am Chem Soc 2023; 145:25737-25752. [PMID: 37907392 PMCID: PMC10690790 DOI: 10.1021/jacs.3c09158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 10/12/2023] [Accepted: 10/18/2023] [Indexed: 11/02/2023]
Abstract
Copper-based nanocrystals are reference nanomaterials for integration into emerging green technologies, with laser ablation in liquid (LAL) being a remarkable technique for their synthesis. However, the achievement of a specific type of nanocrystal, among the whole library of nanomaterials available using LAL, has been until now an empirical endeavor based on changing synthesis parameters and characterizing the products. Here, we started from the bibliographic analysis of LAL synthesis of Cu-based nanocrystals to identify the relevant physical and chemical features for the predetermination of copper oxidation state. First, single features and their combinations were screened by linear regression analysis, also using a genetic algorithm, to find the best correlation with experimental output and identify the equation giving the best prediction of the LAL results. Then, machine learning (ML) models were exploited to unravel cross-correlations between features that are hidden in the linear regression analysis. Although the LAL-generated Cu nanocrystals may be present in a range of oxidation states, from metallic copper to cuprous oxide (Cu2O) and cupric oxide (CuO), in addition to the formation of other materials such as Cu2S and CuCN, ML was able to guide the experiments toward the maximization of the compounds in the greatest demand for integration in sustainable processes. This approach is of general applicability to other nanomaterials and can help understand the origin of the chemical pathways of nanocrystals generated by LAL, providing a rational guideline for the conscious predetermination of laser-synthesis parameters toward the desired compounds.
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Affiliation(s)
- Runpeng Miao
- Department of Chemical Sciences, University of Padova, 35131 Padova, Italy
| | - Michael Bissoli
- Department of Chemical Sciences, University of Padova, 35131 Padova, Italy
| | - Andrea Basagni
- Department of Chemical Sciences, University of Padova, 35131 Padova, Italy
| | - Ester Marotta
- Department of Chemical Sciences, University of Padova, 35131 Padova, Italy
| | - Stefano Corni
- Department of Chemical Sciences, University of Padova, 35131 Padova, Italy
| | - Vincenzo Amendola
- Department of Chemical Sciences, University of Padova, 35131 Padova, Italy
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Prabhu K, Malode SJ, Shetti NP, Pandiaraj S, Alodhayb A, Muthuramamoorthy M. Electro-sensing layer constructed of a WO 3/CuO nanocomposite, for the electrochemical determination of 2-phenylphenol fungicide. ENVIRONMENTAL RESEARCH 2023; 236:116710. [PMID: 37479212 DOI: 10.1016/j.envres.2023.116710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 07/11/2023] [Accepted: 07/19/2023] [Indexed: 07/23/2023]
Abstract
The abstract highlights the development of an electroanalytical sensor for the detection of 2-phenylphenol (2-PPL) as a contaminant. The novelty of the experiment lies in the utilization of a 1-D nanostructured WO3/CuO nanocomposite integrated with a carbon paste electrode (CPE). The hydrothermal method was used to synthesize the WO3 NPs, which were then characterized using Scanning electron microscopy (SEM) and Energy-dispersive X-ray spectroscopy (EDS) techniques. Tungsten oxides (WO3) have been the subject of extensive study because of their many desirable characteristics, including their ease of preparation, tunable stoichiometry, crystal structure, particle morphology, 2.6 eV bandgap, excellent photocatalytic oxidation capacity, non-toxic nature, and widespread availability. The narrow band gap in CuO makes it an ideal sensing material. Copper oxide has applications in many different industries because it is a semiconductor metal with a narrow band gap in the spectrum of 1.2-1.9 eV and unique optical, electrical, and magnetic properties. Techniques like cyclic voltammetry (CV), and square wave voltammetry (SWV) were used. Real sample analysis was carried out in real-world samples like different types of soil, vegetables, and water. The electroanalytical sensor showed outstanding catalytic behavior by enhancing the peak current of the 2-phenylphenol with the potential shift to the less positive side compared to the unmodified carbon paste electrode in the presence of pH 7.0 phosphate buffer solution (PB). Throughout the experimental study, double distilled was used. Various electro-kinetic parameters like pH, accumulation time study, scan rate, concentration variation, standard heterogeneous rate constant, and participation of electrons, accumulation time, and transfer coefficient have been studied at WO3/CuO/CPE. The limit of detection was quantified together with the limit of quantification. Possible electrochemical oxidation mechanism of the toxic molecule was depicted. Overall, this research contributes to the field of electroanalytical sensing and offers potential applications in environmental monitoring.
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Affiliation(s)
- Keerthi Prabhu
- Department of Chemistry, K.L.E. Institute of Technology, Hubballi, 580027, Karnataka, India
| | - Shweta J Malode
- Center for Energy and Environment, School of Advanced Sciences, KLE Technological University, Vidyanagar, Hubballi, 580031, Karnataka, India.
| | - Nagaraj P Shetti
- Center for Energy and Environment, School of Advanced Sciences, KLE Technological University, Vidyanagar, Hubballi, 580031, Karnataka, India.
| | - Saravanan Pandiaraj
- Department of Self-Development Skills, King Saud University, Riyadh, Saudi Arabia
| | - Abdullah Alodhayb
- Research Chair for Tribology, Surface, And Interface Sciences, Department of Physics and Astronomy, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
| | - Muthumareeswaran Muthuramamoorthy
- Biological and Environmental Sensing Research Unit, King Abdullah Institute for Nanotechnology, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
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7
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Saad R, Ahmed AM, Abdelkarem K, Zayed M, Faidey ZM, Al-Senani GM, Shaban M, Tammam MT, Hamdy H. SILAR-Deposited CuO Nanostructured Films Doped with Zinc and Sodium for Improved CO 2 Gas Detection. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2793. [PMID: 37887943 PMCID: PMC10609130 DOI: 10.3390/nano13202793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 10/15/2023] [Accepted: 10/16/2023] [Indexed: 10/28/2023]
Abstract
Gas sensing is of significant importance in a wide range of disciplines, including industrial safety and environmental monitoring. In this work, a low-cost SILAR (Successive Ionic Layer Adsorption and Reaction) technique was employed to fabricate pure CuO, Zn-doped CuO, and Na-doped CuO nanotextured films to efficiently detect CO2 gas. The structures, morphologies, chemical composition, and optical properties of all films are characterized using different tools. All films exhibit a crystalline monoclinic phase (tenorite) structure. The average crystallite size of pure CuO was 83.5 nm, whereas the values for CuO/Zn and CuO/Na were 73.15 nm and 63.08 nm, respectively. Subsequently, the gas-sensing capabilities of these films were evaluated for the detection of CO2 in terms of sensor response, selectivity, recovery time, response time, and limits of detection and quantification. The CuO/Na film offered the most pronounced sensitivity towards CO2 gas, as evidenced by a sensor response of 12.8% at room temperature and a low limit of detection (LoD) of 2.36 SCCM. The response of this sensor increased to 64.5% as the operating temperature increased to 150 °C. This study thus revealed a brand-new CuO/Na nanostructured film as a highly effective and economically viable sensor for the detection of CO2.
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Affiliation(s)
- Rana Saad
- Nanophotonics and Applications (NPA) Lab, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt (K.A.)
| | - Ashour M. Ahmed
- Nanophotonics and Applications (NPA) Lab, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt (K.A.)
- Physics Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
| | - Khaled Abdelkarem
- Nanophotonics and Applications (NPA) Lab, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt (K.A.)
| | - Mohamed Zayed
- Nanophotonics and Applications (NPA) Lab, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt (K.A.)
| | - Zainab M. Faidey
- Nanophotonics and Applications (NPA) Lab, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt (K.A.)
| | - Ghadah M. Al-Senani
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Mohamed Shaban
- Department of Physics, Faculty of Science, Islamic University of Madinah, P.O. Box 170, Madinah 42351, Saudi Arabia
| | - Mohamed T. Tammam
- Nanophotonics and Applications (NPA) Lab, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt (K.A.)
| | - Hany Hamdy
- Nanophotonics and Applications (NPA) Lab, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt (K.A.)
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Zhakypov AS, Nemkayeva RR, Yerlanuly Y, Tulegenova MA, Kurbanov BY, Aitzhanov MB, Markhabayeva AA, Gabdullin MT. Synthesis and in situ oxidation of copper micro- and nanoparticles by arc discharge plasma in liquid. Sci Rep 2023; 13:15714. [PMID: 37735535 PMCID: PMC10514342 DOI: 10.1038/s41598-023-41631-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 08/29/2023] [Indexed: 09/23/2023] Open
Abstract
This work presents a one-step controlled method for the synthesis of copper oxide nanoparticles using an arc discharge in deionized water without subsequent thermal annealing. The synthesis conditions were varied by changing the arc discharge current from 2 to 4 A. Scanning electron microscopy images of samples synthesized at discharge current of 2 A revealed the formation of tenorite (CuO) nanopetals with an average length of 550 nm and a width of 100 nm, which had a large surface area. Arc discharge synthesis at 3 and 4 A current modes provides the formation of a combination of CuO nanopetals with spherical cuprite (Cu2O) nanoparticles with sizes ranging from 30 to 80 nm. The crystalline phase and elemental composition of the synthesized particles were identified by X-ray diffraction analysis, Raman spectroscopy and Energy dispersive analysis. As the arc discharge current was raised from 2 to 4 A, two notable changes occurred in the synthesized particles: the Cu/O ratio increased, and the particle sizes decreased. At 4 A, the synthesized particles were from 30 to 80 nm in size and had a spherical shape, indicating an increase in the amount of cuprite (Cu2O) phase. The optical band gap of the aqueous solutions of copper oxide particles also increased from 2 to 2.34 eV with increasing synthesis current from 2 to 4 A, respectively. This suggests that the proposed synthesis method can be used to tune the band gap of the final material by controlling the Cu/O ratio through the current of arc discharge. Overall, this work demonstrates a novel approach to the synthesis of copper oxide nanoparticles with controllable CuO/Cu2O/Cu ratios, which has the potential to be useful in a variety of applications, particularly due to the significant enhancement of photocatalytic abilities and widen the working spectral range.
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Affiliation(s)
- Alibek S Zhakypov
- Kazakh-British Technical University, 59 Tole Bi, 050000, Almaty, Kazakhstan
- Al-Farabi Kazakh National University, 71 Al-Farabi Av., 050040, Almaty, Kazakhstan
| | - Renata R Nemkayeva
- Kazakh-British Technical University, 59 Tole Bi, 050000, Almaty, Kazakhstan
- Al-Farabi Kazakh National University, 71 Al-Farabi Av., 050040, Almaty, Kazakhstan
| | - Yerassyl Yerlanuly
- Kazakh-British Technical University, 59 Tole Bi, 050000, Almaty, Kazakhstan
- Al-Farabi Kazakh National University, 71 Al-Farabi Av., 050040, Almaty, Kazakhstan
- Institute of Applied Science and Information Technologies, Shashkina, 40/48, 050038, Almaty, Kazakhstan
| | - Malika A Tulegenova
- Al-Farabi Kazakh National University, 71 Al-Farabi Av., 050040, Almaty, Kazakhstan
| | - Beibarys Y Kurbanov
- Kazakh-British Technical University, 59 Tole Bi, 050000, Almaty, Kazakhstan
- Al-Farabi Kazakh National University, 71 Al-Farabi Av., 050040, Almaty, Kazakhstan
| | - Madi B Aitzhanov
- Al-Farabi Kazakh National University, 71 Al-Farabi Av., 050040, Almaty, Kazakhstan
| | - Aiymkul A Markhabayeva
- Kazakh-British Technical University, 59 Tole Bi, 050000, Almaty, Kazakhstan
- Al-Farabi Kazakh National University, 71 Al-Farabi Av., 050040, Almaty, Kazakhstan
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9
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Wang C, He T, Zhou H, Zhang Z, Lee C. Artificial intelligence enhanced sensors - enabling technologies to next-generation healthcare and biomedical platform. Bioelectron Med 2023; 9:17. [PMID: 37528436 PMCID: PMC10394931 DOI: 10.1186/s42234-023-00118-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 06/17/2023] [Indexed: 08/03/2023] Open
Abstract
The fourth industrial revolution has led to the development and application of health monitoring sensors that are characterized by digitalization and intelligence. These sensors have extensive applications in medical care, personal health management, elderly care, sports, and other fields, providing people with more convenient and real-time health services. However, these sensors face limitations such as noise and drift, difficulty in extracting useful information from large amounts of data, and lack of feedback or control signals. The development of artificial intelligence has provided powerful tools and algorithms for data processing and analysis, enabling intelligent health monitoring, and achieving high-precision predictions and decisions. By integrating the Internet of Things, artificial intelligence, and health monitoring sensors, it becomes possible to realize a closed-loop system with the functions of real-time monitoring, data collection, online analysis, diagnosis, and treatment recommendations. This review focuses on the development of healthcare artificial sensors enhanced by intelligent technologies from the aspects of materials, device structure, system integration, and application scenarios. Specifically, this review first introduces the great advances in wearable sensors for monitoring respiration rate, heart rate, pulse, sweat, and tears; implantable sensors for cardiovascular care, nerve signal acquisition, and neurotransmitter monitoring; soft wearable electronics for precise therapy. Then, the recent advances in volatile organic compound detection are highlighted. Next, the current developments of human-machine interfaces, AI-enhanced multimode sensors, and AI-enhanced self-sustainable systems are reviewed. Last, a perspective on future directions for further research development is also provided. In summary, the fusion of artificial intelligence and artificial sensors will provide more intelligent, convenient, and secure services for next-generation healthcare and biomedical applications.
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Affiliation(s)
- Chan Wang
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore, 117576, Singapore
- Center for Intelligent Sensors and MEMS (CISM), National University of Singapore, 5 Engineering Drive 1, Singapore, 117608, Singapore
| | - Tianyiyi He
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore, 117576, Singapore
- Center for Intelligent Sensors and MEMS (CISM), National University of Singapore, 5 Engineering Drive 1, Singapore, 117608, Singapore
| | - Hong Zhou
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore, 117576, Singapore
- Center for Intelligent Sensors and MEMS (CISM), National University of Singapore, 5 Engineering Drive 1, Singapore, 117608, Singapore
| | - Zixuan Zhang
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore, 117576, Singapore
- Center for Intelligent Sensors and MEMS (CISM), National University of Singapore, 5 Engineering Drive 1, Singapore, 117608, Singapore
| | - Chengkuo Lee
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore, 117576, Singapore.
- Center for Intelligent Sensors and MEMS (CISM), National University of Singapore, 5 Engineering Drive 1, Singapore, 117608, Singapore.
- NUS Suzhou Research Institute (NUSRI), Suzhou Industrial Park, Suzhou, 215123, China.
- NUS Graduate School for Integrative Science and Engineering, National University of Singapore, Singapore, 117456, Singapore.
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10
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Aldulaijan S, Ajeebi AM, Jedidi A, Messaoudi S, Raouafi N, Dhouib A. Surface modification of graphene with functionalized carbenes and their applications in the sensing of toxic gases: a DFT study. RSC Adv 2023; 13:19607-19616. [PMID: 37388147 PMCID: PMC10305792 DOI: 10.1039/d3ra02557h] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 06/17/2023] [Indexed: 07/01/2023] Open
Abstract
Graphene and other 2D materials have gained significant attention in the development of gas sensors. In this study, we employed Density Functional Theory (DFT) to investigate the adsorption properties of diazomethanes (1a-1g) with various functional groups (R = OH (a), OMe (b), OEt (c), OPr (d), CF3 (e), Ph (f)) on pristine graphene. Furthermore, we explored the adsorption behavior of activated carbenes (2a-2g) generated from the decomposition of diazomethanes on graphene, as well as the functionalized graphene derivatives (3a-3g) resulting from [2 + 1] cycloaddition reactions between (2a-2g) and graphene. The interaction between these functionalized derivatives (3a-3g) and toxic gases was also investigated. Our results revealed that carbenes exhibited a stronger affinity for graphene compared to diazomethanes. The adsorption energy of esters (3b, 3c, and 3d) on graphene decreased relative to compound 3a, while 3e exhibited increased adsorption energy due to the electron-withdrawing effect of fluorine atoms. Additionally, the adsorption energy of phenyl and nitrophenyl groups (3f and 3g) decreased due to their π-stacking interaction with graphene. Importantly, all functionalized derivatives (3a-3g) demonstrated favorable interactions with gases. Notably, the derivative 3a, acting as a hydrogen bonding donor, exhibited superior performance. Furthermore, modified graphene derivatives exhibited the highest adsorption energy with NO2 gas, highlighting their potential for selective NO2 sensing applications. These findings contribute to the understanding of gas-sensing mechanisms and the design of novel graphene-based sensor platforms.
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Affiliation(s)
- Sarah Aldulaijan
- Chemistry Department, College of Science, Imam Abdulrahman Bin Faisal University P.O. Box 1982 Dammam 31441 Saudi Arabia
| | - Afnan M Ajeebi
- Chemistry Department, College of Science, Imam Abdulrahman Bin Faisal University P.O. Box 1982 Dammam 31441 Saudi Arabia
| | - Abdesslem Jedidi
- Chemistry Department, Faculty of Science, King Abdulaziz University Jeddah 21589 Saudi Arabia
| | - Sabri Messaoudi
- Laboratoire des Matériaux Molécules et Applications, Université Tunis Carthage, IPEST La Marsa 2070 Tunisia
- Department of Chemistry, College of Science, Qassim University Buraidah 51452 Saudi Arabia
| | - Noureddine Raouafi
- Sensors and Biosensors Group, Laboratory of Analytical Chemistry & Electrochemistry (LR99ES15), Faculty of Science, University of Tunis El Manar 2092 Tunis El Manar Tunisia
| | - Adnene Dhouib
- Chemistry Department, College of Science, Imam Abdulrahman Bin Faisal University P.O. Box 1982 Dammam 31441 Saudi Arabia
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11
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Baranov O, Bazaka K, Belmonte T, Riccardi C, Roman HE, Mohandas M, Xu S, Cvelbar U, Levchenko I. Recent innovations in the technology and applications of low-dimensional CuO nanostructures for sensing, energy and catalysis. NANOSCALE HORIZONS 2023; 8:568-602. [PMID: 36928662 DOI: 10.1039/d2nh00546h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Low-dimensional copper oxide nanostructures are very promising building blocks for various functional materials targeting high-demanded applications, including energy harvesting and transformation systems, sensing and catalysis. Featuring a very high surface-to-volume ratio and high chemical reactivity, these materials have attracted wide interest from researchers. Currently, extensive research on the fabrication and applications of copper oxide nanostructures ensures the fast progression of this technology. In this article we briefly outline some of the most recent, mostly within the past two years, innovations in well-established fabrication technologies, including oxygen plasma-based methods, self-assembly and electric-field assisted growth, electrospinning and thermal oxidation approaches. Recent progress in several key types of leading-edge applications of CuO nanostructures, mostly for energy, sensing and catalysis, is also reviewed. Besides, we briefly outline and stress novel insights into the effect of various process parameters on the growth of low-dimensional copper oxide nanostructures, such as the heating rate, oxygen flow, and roughness of the substrates. These insights play a key role in establishing links between the structure, properties and performance of the nanomaterials, as well as finding the cost-and-benefit balance for techniques that are capable of fabricating low-dimensional CuO with the desired properties and facilitating their integration into more intricate material architectures and devices without the loss of original properties and function.
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Affiliation(s)
- Oleg Baranov
- Department of Theoretical Mechanics, Engineering and Robomechanical Systems, National Aerospace University, Kharkiv 61070, Ukraine.
- Department of Gaseous Electronics, Jozef Stefan Institute, Ljubljana 1000, Slovenia
| | - Kateryna Bazaka
- School of Engineering, The Australian National University, Canberra, ACT 2601, Australia
| | | | - Claudia Riccardi
- Dipartimento di Fisica "Giuseppe Occhialini", Università degli Studi di Milano-Bicocca, Piazza della Scienza 3, I20126 Milan, Italy
| | - H Eduardo Roman
- Dipartimento di Fisica "Giuseppe Occhialini", Università degli Studi di Milano-Bicocca, Piazza della Scienza 3, I20126 Milan, Italy
| | - Mandhakini Mohandas
- Center for Nanoscience and Technology, Anna University, Chennai, 600 025, India
| | - Shuyan Xu
- Plasma Sources and Application Centre, NIE, Nanyang Technological University, 637616, Singapore.
| | - Uroš Cvelbar
- Department of Gaseous Electronics, Jozef Stefan Institute, Ljubljana 1000, Slovenia
| | - Igor Levchenko
- Plasma Sources and Application Centre, NIE, Nanyang Technological University, 637616, Singapore.
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12
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Agwamba EC, Louis H, Olagoke PO, Gber TE, Okon GA, Fidelis CF, Adeyinka AS. Modeling of magnesium-decorated graphene quantum dot nanostructure for trapping AsH 3, PH 3 and NH 3 gases. RSC Adv 2023; 13:13624-13641. [PMID: 37152564 PMCID: PMC10155676 DOI: 10.1039/d3ra01279d] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 04/18/2023] [Indexed: 05/09/2023] Open
Abstract
A magnesium-decorated graphene quantum dot (C24H12-Mg) surface has been examined theoretically using density functional theory (DFT) computations at the ωB97XD/6-311++G(2p,2d) level of theory to determine its sensing capability toward XH3 gases, where X = As, N and P, in four different phases: gas, benzene solvent, ethanol solvent and water. This research was carried out in different phases in order to predict the best possible phase for the adsorption of the toxic gases. Analysis of the electronic properties shows that in the different phases the energy gap follows the order NH3@C24H12-Mg < PH3@C24H12-Mg < AsH3@C24H12-Mg. The results obtained from the adsorption studies show that all the calculated adsorption energies are negative, indicating that the nature of the adsorption is chemisorption. The adsorption energies can be arranged in an increasing trend of NH3@C24H12-Mg < PH3@C24H12-Mg < AsH3@C24H12-Mg. The best adsorption performance was noted in the gas phase compared to the other studied counterparts. The interaction between the adsorbed gases and the surfaces shows a non-covalent interaction nature, as confirmed by the quantum theory of atoms-in-molecules (QTAIM) and non-covalent interactions (NCI) analysis. The overall results suggest that we can infer that the surface of the magnesium-decorated graphene quantum dot C24H12-Mg is more efficient for sensing the gas AsH3 than PH3 and NH3.
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Affiliation(s)
- Ernest C Agwamba
- Computational and Bio-Simulation Research Group, University of Calabar Calabar Nigeria
- Department of Chemistry, Covenant University Otta Nigeria
- Department of Chemical Sciences, University of Johannesburg Johannesburg South Africa
| | - Hitler Louis
- Computational and Bio-Simulation Research Group, University of Calabar Calabar Nigeria
- Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar Calabar Nigeria
| | - Praise O Olagoke
- Computational and Bio-Simulation Research Group, University of Calabar Calabar Nigeria
| | - Terkumbur E Gber
- Computational and Bio-Simulation Research Group, University of Calabar Calabar Nigeria
- Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar Calabar Nigeria
| | - Gideon A Okon
- Computational and Bio-Simulation Research Group, University of Calabar Calabar Nigeria
| | - Chidera F Fidelis
- Computational and Bio-Simulation Research Group, University of Calabar Calabar Nigeria
- Department of Pure and Applied Chemistry, Faculty of Physical Sciences, University of Calabar Calabar Nigeria
| | - Adedapo S Adeyinka
- Department of Chemical Sciences, University of Johannesburg Johannesburg South Africa
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13
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Ansari HR, Kordrostami Z, Mirzaei A. In-vehicle wireless driver breath alcohol detection system using a microheater integrated gas sensor based on Sn-doped CuO nanostructures. Sci Rep 2023; 13:7136. [PMID: 37130889 PMCID: PMC10154331 DOI: 10.1038/s41598-023-34313-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 04/27/2023] [Indexed: 05/04/2023] Open
Abstract
In this paper, we have developed an in-vehicle wireless driver breath alcohol detection (IDBAD) system based on Sn-doped CuO nanostructures. When the proposed system detects the ethanol trace in the driver`s exhaled breath, it can alarm and then prevents the car to be started and also sends the location of the car to the mobile phone. The sensor used in this system is a two-sided micro-heater integrated resistive ethanol gas sensor fabricated based on Sn-doped CuO nanostructures. Pristine and Sn-doped CuO nanostructures were synthesized as the sensing materials. The micro-heater is calibrated to provide the desired temperature by applying voltage. The results showed that by Sn-doping in CuO nanostructures, the sensor performance can be significantly improved. The proposed gas sensor has a fast response, good repeatability along with good selectivity that makes it suitable for being used in practical applications such as the proposed system.
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Affiliation(s)
- Hamid Reza Ansari
- Department of Electrical and Electronics Engineering, Shiraz University of Technology, Shiraz, Iran
- Research Center for Design and Fabrication of Advanced Electronic Devices, Shiraz University of Technology, Shiraz, Iran
| | - Zoheir Kordrostami
- Department of Electrical and Electronics Engineering, Shiraz University of Technology, Shiraz, Iran.
- Research Center for Design and Fabrication of Advanced Electronic Devices, Shiraz University of Technology, Shiraz, Iran.
| | - Ali Mirzaei
- Department of Materials Science and Engineering, Shiraz University of Technology, Shiraz, Iran
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14
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Lazouskaya M, Vetik I, Tamm M, Uppuluri K, Scheler O. Binary RuO 2-CuO Electrodes Outperform RuO 2 Electrodes in Measuring the pH in Food Samples. ACS OMEGA 2023; 8:13275-13284. [PMID: 37065073 PMCID: PMC10099411 DOI: 10.1021/acsomega.3c00538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 03/22/2023] [Indexed: 06/19/2023]
Abstract
Glass electrodes are the only type of pH-sensitive electrodes currently used in the food industry. While widely used, they have several disadvantages, especially in the areas of brittleness and price. Ruthenium(IV) oxide (RuO2) pH electrodes are a well-known alternative to conventional glass electrodes, providing improved durability and lower price. Nevertheless, partial substitution of RuO2 with cupric oxide (CuO) would further lower the price and reduce the toxicity of the electrode. In this paper, we present the applicability of RuO2-CuO electrodes for pH measurement in food samples. The electrodes were fabricated by screen printing and covered with a protective Nafion membrane. In the experiments with food samples, the RuO2-CuO electrodes outperformed RuO2 electrodes in measuring the pH with an almost twofold higher rate of accurate measurements. The utilization of CuO for the fabrication of pH electrodes allowed the accurate measurement of pH in a larger variety of food samples without compromising the response time.
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Affiliation(s)
- Maryna Lazouskaya
- School
of Science, Department of Chemistry and Biotechnology, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia
- Center
of Food and Fermentation Technologies (TFTAK), Mäealuse 2/4, 12618 Tallinn, Estonia
| | - Iuliia Vetik
- School
of Science, Department of Chemistry and Biotechnology, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia
| | - Martti Tamm
- Center
of Food and Fermentation Technologies (TFTAK), Mäealuse 2/4, 12618 Tallinn, Estonia
| | - Kiranmai Uppuluri
- Łukasiewicz
Research Network—Institute of Microelectronics and Photonics
(Łukasiewicz—IMiF), Kraków Division, ul. Zabłocie 39, 30-701 Kraków, Poland
| | - Ott Scheler
- School
of Science, Department of Chemistry and Biotechnology, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia
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15
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Pereira Silva AL, Varela Júnior JDJG. Density Functional Theory Study of Cu-Modified B 12N 12 Nanocage as a Chemical Sensor for Carbon Monoxide Gas. Inorg Chem 2023; 62:1926-1934. [PMID: 36166839 DOI: 10.1021/acs.inorgchem.2c01621] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The development of efficient B12N12-based toxic gas sensors has received considerable attention from the scientific community. Thus, in this regard, quantum chemical calculations were performed using density functional theory (DFT) at the B97D/6-31G(d,p) level for all of the studied systems. Modification of copper on B12N12 results in five optimized structures, named CuB11N12 and B12N11Cu (doped structures), Cu@b66 and Cu@b64 (decorated structures), and Cu@B12N12 (encapsulated structure). The results indicate that the CO gas weakly physisorbed on the B12N12 nanocage. It was found that the gas adsorption performance of B12N12 is improved due to the introduction of the Cu atom, but the interaction between CO and B12N11Cu, Cu@B12N12, Cu@b64, and Cu@b66 nanocages is strong, limiting the applications as a sensor. Particularly, the CuB11N12 system shows moderate adsorption (Eads = -0.6 eV) and a high electronic sensitivity (ΔEgap = 81.6%) toward CO gas, compared to other modified systems. Furthermore, based on the sensor performance analysis, it was found that CuB11N12 presented low recovery time (14 ms) and high selectivity for CO detection, making it a promising fast response sensor. Finally, our results demonstrated the capability of CuB11N12 as a superior sensor material for applications involving the selective detection of CO gas.
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Affiliation(s)
- Adilson Luís Pereira Silva
- Universidade Estadual do Maranhão, 65055-310, São Luís, MA, Brazil.,Universidade Federal do Maranhão, 65080-805, São Luís, MA, Brazil
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16
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Akond US, Mahanta A, Jasimuddin S. CuO nanoleaf and β-cyclodextrin functionalized reduced graphene oxide: a highly selective and sensitive electrochemical sensor for the simultaneous detection of 2-chlorophenol and 2, 4-dichlorophenol. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:436-444. [PMID: 36651234 DOI: 10.1039/d2ay01887j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Chlorophenols are considered priority pollutants and are harmful to humans and the environment; consequently, sensitive, and selective detection of chlorophenols is very significant. In the present article, a glassy carbon electrode was modified by copper oxide nanoleaves, β-cyclodextrin, and reduced graphene oxide through an electrostatic self-assembly method (CuO NLs-β-CD-rGO-GCE) and successfully utilized for the selective and sensitive detection of 2-chlorophenol (2-CP) and 2,4-dichlorophenol (2,4-DCP). The modified electrodes were characterized by using SEM, EDX, ATR-FTIR, CV, and EIS. The electrochemical behaviour of 2-CP and 2,4 DCP on different modified electrodes was investigated by cyclic voltammetry whereas differential pulse voltammetry was used for the quantitative determination of chlorophenols. Under the optimized conditions, the anodic peak current displayed a good linear relationship to concentration in the range of 5 to 50 μM for 2-CP and 5 to 30 μM for 2,4-DCP, with detection limits of 0.22 nM and 0.52 nM, respectively. Moreover the proposed sensor exhibited good reproducibility, high sensitivity, and long term stability. To further study the practical applicability of the newly developed sensor, the modified electrode was successfully used to determine 2-CP and 2,4-DCP in a water sample with good recovery.
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Affiliation(s)
- Umme Solaem Akond
- Department of Chemistry, Assam University, Silchar, Assam-788011, India.
| | - Abhinandan Mahanta
- Department of Chemistry, Assam University, Silchar, Assam-788011, India.
| | - Sk Jasimuddin
- Department of Chemistry, Assam University, Silchar, Assam-788011, India.
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17
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Chesler P, Hornoiu C, Anastasescu M, Calderon-Moreno JM, Gheorghe M, Gartner M. Cobalt- and Copper-Based Chemiresistors for Low Concentration Methane Detection, a Comparison Study. Gels 2022; 8:721. [PMID: 36354631 PMCID: PMC9689713 DOI: 10.3390/gels8110721] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/04/2022] [Accepted: 11/06/2022] [Indexed: 09/29/2023] Open
Abstract
Methane is a colorless/odorless major greenhouse effect gas, which can explode when it accumulates at concentrations above 50,000 ppm. Its detection cannot be performed without specialized equipment, namely sensing devices. A series of MOX sensors (chemiresistors type), with CoO and CuO sensitive films were obtained using an eco-friendly and low-cost deposition technique (sol-gel). The sensing films were characterized using AFM and SEM as thin film. The transducers are based on an alumina wafer, with Au or Pt interdigital electrodes (IDE) printed onto the alumina surface. The sensor response was recorded upon sensor exposure to different methane concentrations (target gas) under lab conditions (dried target and carrier gas from gas cylinders), in a constant gas flow, with target gas concentrations in the 5-2000 ppm domain and a direct current (DC) applied to the IDE as sensor operating voltage. Humidity and cross-sensitivity (CO2) measurements were performed, along with sensor stability measurements, to better characterize the obtained sensors. The obtained results emphasize good 3-S sensor parameters (sensitivity, partial selectivity and stability) and also short response time and complete sensor recovery, completed by a low working temperature (220 °C), which are key factors for further development of a new commercial chemiresistor for methane detection.
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Affiliation(s)
- Paul Chesler
- “Ilie Murgulescu” Institute of Physical Chemistry—Romanian Academy, Splaiul Independentei 202, 060021 Bucharest, Romania
| | - Cristian Hornoiu
- “Ilie Murgulescu” Institute of Physical Chemistry—Romanian Academy, Splaiul Independentei 202, 060021 Bucharest, Romania
| | - Mihai Anastasescu
- “Ilie Murgulescu” Institute of Physical Chemistry—Romanian Academy, Splaiul Independentei 202, 060021 Bucharest, Romania
| | - Jose Maria Calderon-Moreno
- “Ilie Murgulescu” Institute of Physical Chemistry—Romanian Academy, Splaiul Independentei 202, 060021 Bucharest, Romania
| | - Marin Gheorghe
- NANOM MEMS SRL, Strada George Cosbuc 9, Rasnov, 505400 Brașov, Romania
| | - Mariuca Gartner
- “Ilie Murgulescu” Institute of Physical Chemistry—Romanian Academy, Splaiul Independentei 202, 060021 Bucharest, Romania
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18
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Jung D, Hwang S, Kim HJ, Han JH, Lee HN. Characterization of Porous CuO Films for H 2S Gas Sensors. MATERIALS (BASEL, SWITZERLAND) 2022; 15:7270. [PMID: 36295331 PMCID: PMC9610780 DOI: 10.3390/ma15207270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 10/11/2022] [Accepted: 10/12/2022] [Indexed: 06/16/2023]
Abstract
Using a thermal evaporator, various porous Cu films were deposited according to the deposition pressure. CuO films were formed by post heat treatment in the air. Changes in morphological and structural characteristics of films were analyzed using field-emission scanning electron microscopy (FE-SEM) and X-ray diffraction (XRD). Relative density and porosity were quantitatively calculated. CuO films with various pores ranging from 39.4 to 95.2% were successfully manufactured and were applied as gas sensors for H2S detection on interdigitated electrode (IDE) substrate. Resistance change was monitored at 325 °C and an increase in porosity of the film improved the sensor performance. The CuO-10 gas sensor with a high porosity of 95.2% showed a relatively high response (2.7) and a fast recovery time (514 s) for H2S 1.5 ppm. It is confirmed that the porosity of the CuO detection layer had a significant effect on response and recovery time.
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Affiliation(s)
- Dawoon Jung
- Heat & Surface Technology R&D Department, Korea Institute of Industrial Technology (KITECH), Incheon 21999, Korea
- Department of Materials Science and Engineering, Gacheon University, Seongnam-si 13120, Korea
| | - Sehoon Hwang
- Heat & Surface Technology R&D Department, Korea Institute of Industrial Technology (KITECH), Incheon 21999, Korea
| | - Hyun-Jong Kim
- Heat & Surface Technology R&D Department, Korea Institute of Industrial Technology (KITECH), Incheon 21999, Korea
| | - Jae-Hee Han
- Department of Materials Science and Engineering, Gacheon University, Seongnam-si 13120, Korea
| | - Ho-Nyun Lee
- Heat & Surface Technology R&D Department, Korea Institute of Industrial Technology (KITECH), Incheon 21999, Korea
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19
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Khandelwal M, Kumawat A, Misra KP, Khangarot RK. Efficient antibacterial activity in copper oxide nanoparticles biosynthesized via Jasminum sambac flower extract. PARTICULATE SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1080/02726351.2022.2129117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2022]
Affiliation(s)
- Manisha Khandelwal
- Department of Chemistry, University College of Science, Mohanlal Sukhadia University, Udaipur, India
| | - Ashok Kumawat
- Department of Physics, School of Basic Sciences, Manipal University Jaipur, Jaipur, India
| | - Kamakhya Prakash Misra
- Department of Physics, School of Basic Sciences, Manipal University Jaipur, Jaipur, India
| | - Rama Kanwar Khangarot
- Department of Chemistry, University College of Science, Mohanlal Sukhadia University, Udaipur, India
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20
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Ilgar M, Baytemir G, Taşaltın N, Güllülü S, Yeşilyurt İS, Karakuş S. Multifunctional maca extract coated CuO nanoparticles with antimicrobial and dopamine sensing activities: A dual electrochemical – Smartphone colorimetric detection system. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Kimura Y, Tohmyoh H. Copper Oxide Solution Sensor Formed on a Thin Film Having Nanowires for Detecting Ethanol in Water. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:11573-11580. [PMID: 36112469 DOI: 10.1021/acs.langmuir.2c01160] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Solution sensors are required to detect analytes in liquids with high sensitivity and response speed for environmental and health monitoring. In this study, we introduce the concept of a Cu oxide thin film having nanowires as a solution sensor for detecting ethanol in water. The Cu oxide sensor with grains and nanowires of different shapes was fabricated by a simple method of heating a Cu thin film and dropping an Ag conductive paste. Sensing parameters and mechanisms were evaluated by current-voltage and electrochemical impedance spectroscopy measurements. In the Cu oxide sensor formed on thin film having a large number of nanowires fabricated by heating at 400 °C for 5 h, the sensor sensitivity was 0.96 at 0.1 vol % ethanol concentration, and the response time was 313 s at a voltage of 0.1 V. The Cu oxide sensor detects ethanol by the change in electrical resistance caused by the reaction between ethanol molecules and the lattice oxygen on the Cu oxide surface. Therefore, the large nanowire surface area leads to a higher sensor sensitivity and a faster response time. Furthermore, the grain and nanowire regions on the thin film are represented by equivalent circuits. A high correlation was observed between the sensor sensitivity and the time constant calculated from the equivalent circuit. The proposed Cu oxide solution sensor and detection mechanism offer designs to improve the performance of chemical sensors.
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Affiliation(s)
- Yoshinari Kimura
- Department of Finemechanics, Graduate School of Engineering, Tohoku University, 6-6-01 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Hironori Tohmyoh
- Department of Finemechanics, Graduate School of Engineering, Tohoku University, 6-6-01 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
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22
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Electrospun PA66/Graphene Fiber Films and Application on Flexible Triboelectric Nanogenerators. MATERIALS 2022; 15:ma15155191. [PMID: 35897623 PMCID: PMC9331262 DOI: 10.3390/ma15155191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 07/22/2022] [Accepted: 07/24/2022] [Indexed: 11/17/2022]
Abstract
Triboelectric nanogenerators (TENGs) are considered to be the most promising energy supply equipment for wearable devices, due to their excellent portability and good mechanical properties. Nevertheless, low power generation efficiency, high fabrication difficulty, and poor wearability hinder their application in the wearable field. In this work, PA66/graphene fiber films with 0, 1 wt%, 1.5 wt%, 2 wt%, 2.5 wt% graphene and PVDF films were prepared by electrospinning. Meanwhile, TENGs were prepared with PA66/graphene fiber films, PVDF films and plain weave conductive cloth, which were used as the positive friction layer, negative friction layer and the flexible substrate, respectively. The results demonstrated that TENGs prepared by PA66/graphene fiber films with 2 wt% grapheme showed the best performance, and that the maximum open circuit voltage and short circuit current of TENGs could reach 180 V and 7.8 μA, respectively, and that the power density was 2.67 W/m2 when the external load was 113 MΩ. This is why the PA66/graphene film produced a more subtle secondary network with the addition of graphene, used as a charge capture site to increase its surface charge. Additionally, all the layered structures of TENGs were composed of breathable electrospun films and plain conductive cloth, with water vapor transmittance (WVT) of 9.6 Kgm-2d-1, reflecting excellent wearing comfort. The study showed that TENGs, based on all electrospinning, have great potential in the field of wearable energy supply devices.
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23
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Mosaferi M, Selles P, Miteva T, Ferté A, Carniato S. Interpretation of Shakeup Mechanisms in Copper L-Shell Photoelectron Spectra. J Phys Chem A 2022; 126:4902-4914. [PMID: 35861575 DOI: 10.1021/acs.jpca.2c01870] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report on an original full ab initio quantum molecular approach designed to simulate Cu 2p X-ray photoelectron spectra. The description includes electronic relaxation/correlation and spin-orbit coupling effects and is implemented within nonorthogonal sets of molecular orbitals for the initial and final states. The underlying mechanism structuring the Cu 2p photoelectron spectra is clarified thanks to a correlation diagram applied to the CuO4C6H6 paradigm. This diagram illustrates how the energy drop of the Cu 3d levels following the creation of the Cu 2p core hole switches the nature of the highest singly occupied molecular orbital (H-SOMO) from dominant metal to dominant ligand character. It also reveals how the repositioning of the Cu 3d levels induces the formation of new bonding and antibonding orbitals from which shakeup mechanisms toward the relaxed H-SOMO operate. The specific nature, ligand → ligand and metal → ligand, of these excitations building the satellite lines is exposed. Our approach finally applied to the real Cu(acac)2 system clearly demonstrates how a definite interpretation of the XPS spectra can be obtained when a correct evaluation of binding energies, intensities, and relative widths of the spectral lines is achieved.
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Affiliation(s)
- M Mosaferi
- Laboratoire de Chimie Physique-Matière et Rayonnement (LCPMR), UMR 7614, CNRS, Sorbonne Université, 75005 Paris, France
| | - P Selles
- Laboratoire de Chimie Physique-Matière et Rayonnement (LCPMR), UMR 7614, CNRS, Sorbonne Université, 75005 Paris, France
| | - T Miteva
- Laboratoire de Chimie Physique-Matière et Rayonnement (LCPMR), UMR 7614, CNRS, Sorbonne Université, 75005 Paris, France
| | - A Ferté
- Laboratoire de Chimie Physique-Matière et Rayonnement (LCPMR), UMR 7614, CNRS, Sorbonne Université, 75005 Paris, France
| | - S Carniato
- Laboratoire de Chimie Physique-Matière et Rayonnement (LCPMR), UMR 7614, CNRS, Sorbonne Université, 75005 Paris, France
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Mechanisms of NO 2 Detection in Hybrid Structures Containing Reduced Graphene Oxide: A Review. SENSORS 2022; 22:s22145316. [PMID: 35890996 PMCID: PMC9324878 DOI: 10.3390/s22145316] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 06/29/2022] [Accepted: 07/08/2022] [Indexed: 12/10/2022]
Abstract
The sensitive detection of harmful gases, in particular nitrogen dioxide, is very important for our health and environment protection. Therefore, many papers on sensor materials used for NO2 detection have been published in recent years. Materials based on graphene and reduced graphene oxide deserve special attention, as they exhibit excellent sensor properties compared to the other materials. In this paper, we present the most recent advances in rGO hybrid materials developed for NO2 detection. We discuss their properties and, in particular, the mechanism of their interaction with NO2. We also present current problems occuring in this field.
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25
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Alp-Erbay E. Nanomaterials Utilized in Food Packaging: State-of-the-Art. FOOD ENGINEERING REVIEWS 2022. [DOI: 10.1007/s12393-022-09318-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Broadband Dielectric Spectroscopic Detection of Ethanol: A Side-by-Side Comparison of ZnO and HKUST-1 MOFs as Sensing Media. CHEMOSENSORS 2022. [DOI: 10.3390/chemosensors10070241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The most common gas sensors are based on chemically induced changes in electrical resistivity and necessarily involve making imperfect electrical contacts to the sensing materials, which introduce errors into the measurements. We leverage thermal- and chemical-induced changes in microwave propagation characteristics (i.e., S-parameters) to compare ZnO and surface-anchored metal–organic-framework (HKUST-1 MOF) thin films as sensing materials for detecting ethanol vapor, a typical volatile organic compound (VOC), at low temperatures. We show that the microwave propagation technique can detect ethanol at relatively low temperatures (<100 °C), and afford new mechanistic insights that are inaccessible with the traditional dc-resistance-based measurements. In addition, the metrological technique avoids the inimical measurand distortions due to parasitic electrical effects inherent in the conductometric volatile organic compound detection.
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Electrospun Smart Oxygen Indicating Tag for Modified Atmosphere Packaging Applications: Fabrication, Characterization and Storage Stability. Polymers (Basel) 2022; 14:polym14102108. [PMID: 35631990 PMCID: PMC9143945 DOI: 10.3390/polym14102108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 04/28/2022] [Accepted: 05/19/2022] [Indexed: 12/04/2022] Open
Abstract
Pack integrity is essential for the success of modified atmosphere packaging of food products. Colorimetric oxygen leak indicators or tags are simple and smart tools that can depict the presence or absence of oxygen within a package. However, not many bio-based electrospun materials were explored for this purpose. Ultraviolet light-activated kappa-carrageenan-based smart oxygen indicating tag was developed using the electrospinning technique in this study and its stability during storage was determined. Kappa-carrageenan was used with redox dye, sacrificial electron donor, photocatalyst, and solvent for preparing oxygen indicating electrospun tag. Parameters of electrospinning namely flow rate of the polymer solution, the distance between spinneret and collector, and voltage applied were optimized using Taguchi L9 orthogonal design. Rheological and microstructural studies revealed that the electrospinning solution was pseudoplastic and the mat fibers were compact and non-woven with an average fiber size of 1–2 microns. Oxygen sensitivity at different oxygen concentrations revealed that the tag was sensitive enough to detect as low as 0.4% oxygen. The developed tag was stable for at least 60 days when stored in dark at 25 °C and 65% RH. The developed mat could be highly useful in modified atmosphere packaging applications to check seal integrity in oxygen devoid packages.
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Willis CN, Larson SR, Andama A, Jaganath D, Misra M, Cattamanchi A, Mohanty SK. Engineered Electroactive Solutions for Electrochemical Detection of Tuberculosis-Associated Volatile Organic Biomarkers. IEEE SENSORS JOURNAL 2022; 22:2984-2992. [PMID: 36157103 PMCID: PMC9495895 DOI: 10.1109/jsen.2021.3126732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Rapid screening of tuberculosis by evaluation of associated volatile organic biomarkers in breath is a promising technology that is significantly faster and more convenient than traditional sputum culture tests. Methyl nicotinate (MN) and methyl p-anisate (MPA) have been isolated as potential biomarkers for mycobacterium tuberculosis and have been found in the breath of patients with active pulmonary tuberculosis. A novel approach to detection of these biomarkers in liquid droplets (e.g. from breath condensate) using inexpensive screen-printed electrodes is presented. Previous modelling studies suggest that these biomarkers complex with certain transition metals of particular valence state. This interaction can be exploited by mixing the biomarker sample into an electroactive solution (EAS) containing the functional metal ion and observing the change electrochemically. The study focuses on low biomarker concentrations, determined to be clinically relevant based on preliminary GC-MS studies of the levels found in patient breath. It was found that both the cyclic voltammogram and square wave voltammogram of copper(II) change significantly when as little as 0.1 mM MN is added to the solution, with analysis times of less than 2 min. Copper(II) exhibits three separate peaks during square wave voltammetry. The location and area of each peak are affected differently as the concentration of MN increases, suggesting a reaction with specific oxidation states of the metal. In this way, a "fingerprint" method can be used to identify biomarkers once their known interaction is established.
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Affiliation(s)
- Christina N Willis
- Department of Chemical Engineering, The University of Utah, Salt Lake City, UT 84112, USA
| | - Shaylee R Larson
- Department of Chemical Engineering, The University of Utah, Salt Lake City, UT 84112, USA
| | - Alfred Andama
- Department of Medicine and the Infectious Disease Research Collaboration, Makerere University College of Health Sciences, Kampala, Uganda
| | - Devan Jaganath
- Division of Pediatric Infectious Diseases, the Division of Pulmonary and Critical Care Medicine, and the Center for Tuberculosis, University of California San Francisco, San Francisco, CA 94110, USA
| | - Manoranjan Misra
- Department of Chemical Engineering and the Department of Materials Science and Engineering, The University of Utah, Salt Lake City, UT 84112, USA
| | - Adithya Cattamanchi
- Division of Pulmonary and Critical Care Medicine, the Center for Tuberculosis, and the Center for Vulnerable Populations, University of California San Francisco, San Francisco, CA 94110, USA
| | - Swomitra K Mohanty
- Department of Chemical Engineering and the Department of Materials Science and Engineering, The University of Utah, Salt Lake City, UT 84112, USA
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Abd-Elsalam KA. Copper-based nanomaterials: Next-generation agrochemicals: A note from the editor. COPPER NANOSTRUCTURES: NEXT-GENERATION OF AGROCHEMICALS FOR SUSTAINABLE AGROECOSYSTEMS 2022:1-14. [DOI: 10.1016/b978-0-12-823833-2.00002-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Kumar N, Haviar S, Zeman P. Three-Layer PdO/CuWO 4/CuO System for Hydrogen Gas Sensing with Reduced Humidity Interference. NANOMATERIALS 2021; 11:nano11123456. [PMID: 34947809 PMCID: PMC8704960 DOI: 10.3390/nano11123456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/14/2021] [Accepted: 12/15/2021] [Indexed: 02/04/2023]
Abstract
The growing hydrogen industry is stimulating an ongoing search for new materials not only for hydrogen production or storage but also for hydrogen sensing. These materials have to be sensitive to hydrogen, but additionally, their synthesis should be compatible with the microcircuit industry to enable seamless integration into various devices. In addition, the interference of air humidity remains an issue for hydrogen sensing materials. We approach these challenges using conventional reactive sputter deposition. Using three consequential processes, we synthesized multilayer structures. A basic two-layer system composed of a base layer of cupric oxide (CuO) overlayered with a nanostructured copper tungstate (CuWO4) exhibits higher sensitivity than individual materials. This is explained by the formation of microscopic heterojunctions. The addition of a third layer of palladium oxide (PdO) in forms of thin film and particles resulted in a reduction in humidity interference. As a result, a sensing three-layer system working at 150 °C with an equalized response in dry/humid air was developed.
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Al-Mohaimeed AM, Mostafa GAE, El-Tohamy MF. New Construction of Functionalized CuO/Al 2O 3 Nanocomposite-Based Polymeric Sensor for Potentiometric Estimation of Naltrexone Hydrochloride in Commercial Formulations. Polymers (Basel) 2021; 13:polym13244459. [PMID: 34961010 PMCID: PMC8703699 DOI: 10.3390/polym13244459] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/13/2021] [Accepted: 12/17/2021] [Indexed: 12/15/2022] Open
Abstract
Electrically conductive polymeric nanocomposites with nanoparticles are adaptable types of nanomaterials that are prospective for various applications. The extraordinary features of copper oxide (CuO) and aluminium oxide (Al2O3) nanostructures, encourages extensive studies to prospect these metal oxide nanocomposites as potential electroactive materials in sensing and biosensing applications. This study suggested a new CuO/Al2O3 nanocomposite-based polymeric coated wire membrane sensor for estimating naltrexone hydrochloride (NTX) in commercial formulations. Naltrexone hydrochloride and sodium tetraphenylborate (Na-TPB) were incorporated in the presence of polymeric polyvinyl chloride (PVC) and solvent mediator o-nitrophenyloctyl ether (o-NPOE) to form naltrexone tetraphenylborate (NTX-TPB) as an electroactive material. The modified sensor using NTX-TPB-CuO/Al2O3 nanocomposite displayed high selectivity and sensitivity for the discrimination and quantification of NTX with a linearity range 1.0 × 10-9-1.0 × 10-2 mol L-1 and a regression equation EmV = (58.25 ± 0.3) log [NTX] + 754.25. Contrarily, the unmodified coated wire sensor of NTX-TPB exhibited a Nernstian response at 1.0 × 10-5-1.0 × 10-2 mol L-1 and a regression equation EmV = (52.1 ± 0.2) log [NTX] + 406.6. The suggested modified potentiometric system was validated with respect to various criteria using the methodology recommended guidelines.
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Affiliation(s)
- Amal M. Al-Mohaimeed
- Department of Chemistry, College of Science, King Saud University, P.O. Box 22452, Riyadh 11451, Saudi Arabia;
| | - Gamal A. E. Mostafa
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
- Correspondence: (G.A.E.M.); (M.F.E.-T.)
| | - Maha F. El-Tohamy
- Department of Chemistry, College of Science, King Saud University, P.O. Box 22452, Riyadh 11451, Saudi Arabia;
- Correspondence: (G.A.E.M.); (M.F.E.-T.)
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Hesabizadeh T, Jebari N, Madouri A, Hallais G, Clark TE, Behura SK, Herth E, Guisbiers G. Electric-Field-Induced Phase Change in Copper Oxide Nanostructures. ACS OMEGA 2021; 6:33130-33140. [PMID: 34901664 PMCID: PMC8655937 DOI: 10.1021/acsomega.1c05498] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Accepted: 11/04/2021] [Indexed: 06/14/2023]
Abstract
Transition-metal oxides such as cupric and cuprous oxides are strongly correlated materials made of earth-abundant chemical elements displaying energy band gaps of around 1.2 and 2.1 eV. The ability to design nanostructures of cupric and cuprous oxide semiconductors with in situ phase change and morphological transition will benefit several applications including photovoltaic energy conversion and photoelectrochemical water splitting. Here, we have developed a physicochemical route to synthesize copper oxide nanostructures, enabling the phase change of cupric oxide into cuprous oxide using an electric field of 105 V/m in deionized water via a new synthetic design protocol called electric-field-assisted pulsed laser ablation in liquids (EFA-PLAL). The morphology of the nanostructures can also be tuned from a sphere of ∼20 nm to an elongated leaf of ∼3 μm by controlling the intensity of the applied electric field. Futuristically, the materials chemistry occurring during the EFA-PLAL synthesis protocol developed here can be leveraged to design various strongly correlated nanomaterials and heterostructures of other 3d transition-metal oxides.
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Affiliation(s)
- Tina Hesabizadeh
- Department
of Physics & Astronomy, University of
Arkansas at Little Rock, 2801 South University Avenue, Little Rock, Arkansas 72204, United States
| | - Nessrine Jebari
- Center
of Nanosciences & Nanotechnologies, CNRS UMR 9001, University of Paris-Saclay, Paris 91120, France
| | - Ali Madouri
- Center
of Nanosciences & Nanotechnologies, CNRS UMR 9001, University of Paris-Saclay, Paris 91120, France
| | - Géraldine Hallais
- Center
of Nanosciences & Nanotechnologies, CNRS UMR 9001, University of Paris-Saclay, Paris 91120, France
| | - Trevor E. Clark
- Materials
Characterization Lab, Pennsylvania State
University, N-317 Millennium
Science Complex, Pollock Road, University Park, Pennsylvania 16802, United States
| | - Sanjay K. Behura
- Department
of Chemistry and Physics, University of
Arkansas at Pine Bluff, 1200 N. University Drive, Pine Bluff, Arkansas 71601, United States
| | - Etienne Herth
- Center
of Nanosciences & Nanotechnologies, CNRS UMR 9001, University of Paris-Saclay, Paris 91120, France
| | - Grégory Guisbiers
- Department
of Physics & Astronomy, University of
Arkansas at Little Rock, 2801 South University Avenue, Little Rock, Arkansas 72204, United States
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Saad R, Gamal A, Zayed M, Ahmed AM, Shaban M, BinSabt M, Rabia M, Hamdy H. Fabrication of ZnO/CNTs for Application in CO 2 Sensor at Room Temperature. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:3087. [PMID: 34835849 PMCID: PMC8624847 DOI: 10.3390/nano11113087] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 10/27/2021] [Accepted: 10/28/2021] [Indexed: 11/17/2022]
Abstract
Thin films of ZnO and ZnO/carbon nanotubes (CNTs) are prepared and used as CO2 gas sensors. The spray pyrolysis method was used to prepare both ZnO and ZnO/CNTs films, with CNTs first prepared using the chemical vapor deposition method (CVD). The chemical structure and optical analyses for all the prepared nanomaterials were performed using X-ray diffraction (XRD), Fourier transformer infrared spectroscopy (FTIR), and UV/Vis spectrophotometer devices, respectively. According to the XRD analysis, the crystal sizes of ZnO and ZnO/CNTs were approximately 50.4 and 65.2 nm, respectively. CNTs have average inner and outer diameters of about 3 and 13 nm respectively, according to the transmitted electron microscope (TEM), and a wall thickness of about 5 nm. The detection of CO2 is accomplished by passing varying rates of the gas from 30 to 150 sccm over the prepared thin-film electrodes. At 150 sccm, the sensitivities of ZnO and ZnO/CNTs sensors are 6.8% and 22.4%, respectively. The ZnO/CNTs sensor has a very stable sensitivity to CO2 gas for 21 days. Moreover, this sensor has a high selectivity to CO2 in comparison with other gases, in which the ZnO/CNTs sensor has a higher sensitivity to CO2 compared to H2 and C2H2.
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Affiliation(s)
- Rana Saad
- Nanophotonics and Applications Laboratory, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt; (R.S.); (A.G.); (M.Z.); (A.M.A.); (M.R.); (H.H.)
| | - Ahmed Gamal
- Nanophotonics and Applications Laboratory, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt; (R.S.); (A.G.); (M.Z.); (A.M.A.); (M.R.); (H.H.)
| | - Mohamed Zayed
- Nanophotonics and Applications Laboratory, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt; (R.S.); (A.G.); (M.Z.); (A.M.A.); (M.R.); (H.H.)
| | - Ashour M. Ahmed
- Nanophotonics and Applications Laboratory, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt; (R.S.); (A.G.); (M.Z.); (A.M.A.); (M.R.); (H.H.)
| | - Mohamed Shaban
- Nanophotonics and Applications Laboratory, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt; (R.S.); (A.G.); (M.Z.); (A.M.A.); (M.R.); (H.H.)
- Department of Physics, Faculty of Science, Islamic University of Madinah, P.O. Box 170, AlMadinah Almonawara 42351, Saudi Arabia
| | - Mohammad BinSabt
- Chemistry Department, Faculty of Science, Kuwait University, P.O. Box 5969, Safat 13060, Kuwait;
| | - Mohamed Rabia
- Nanophotonics and Applications Laboratory, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt; (R.S.); (A.G.); (M.Z.); (A.M.A.); (M.R.); (H.H.)
- Polymer Research Laboratory, Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef 62511, Egypt
| | - Hany Hamdy
- Nanophotonics and Applications Laboratory, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt; (R.S.); (A.G.); (M.Z.); (A.M.A.); (M.R.); (H.H.)
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Werner S, Glaser C, Kasper T, Lê TNN, Gross S, Smarsly BM. H 2 S Dosimetry by CuO: Towards Stable Sensors by Unravelling the Underlying Solid-State Chemistry. Chemistry 2021; 28:e202103437. [PMID: 34731507 PMCID: PMC9300071 DOI: 10.1002/chem.202103437] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Indexed: 12/15/2022]
Abstract
The precise detection of the toxic gas H2S requires reliable sensitivity and specificity of sensors even at minute concentrations of as low as 10 ppm, the value corresponding to typical exposure limits. CuO can be used for H2S dosimetry, based on the formation of conductive CuS and the concomitant significant increase in conductance. In theory, at elevated temperature the reaction is reversed and CuO is formed, ideally enabling repeated and long‐term use of one sensor. Yet, the performance of CuO tends to drop upon cycling. Utilizing defined CuO nanorods we thoroughly elucidated the associated detrimental chemical changes directly on the sensors, by Raman and electron microscopy analysis of each step during sensing (CuO→CuS) and regeneration (CuS→CuO) cycles. We find the decrease in the sensing performance is mainly caused by the irreversible formation of CuSO4 during regeneration. The findings allowed us to develop strategies to reduce CuSO4 formation and thus to substantially maintain the sensing stability even for repeated cycles. We achieved CuO‐based dosimeters possessing a response time of a few minutes only, even for 10 ppm H2S, and prolonged life‐time.
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Affiliation(s)
- Sebastian Werner
- Institute of Physical Chemistry, Justus-Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
| | - Clarissa Glaser
- Institute of Physical Chemistry, Justus-Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
| | - Thomas Kasper
- Institute of Physical Chemistry, Justus-Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
| | - Trung Nghia Nguyên Lê
- Institute of Physical Chemistry, Justus-Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany.,Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via Marzolo 1, 35131, Padova.,INSTM, UdR di Padova, Italy
| | - Silvia Gross
- Dipartimento di Scienze Chimiche, Università degli Studi di Padova, Via Marzolo 1, 35131, Padova.,INSTM, UdR di Padova, Italy
| | - Bernd M Smarsly
- Institute of Physical Chemistry, Justus-Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany.,Center for Materials Research, Justus-Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany
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Scandurra A, Censabella M, Boscarino S, Condorelli GG, Grimaldi MG, Ruffino F. Fabrication of Cu(II) oxide-hydroxide nanostructures onto graphene paper by laser and thermal processes for sensitive nano-electrochemical sensing of glucose. NANOTECHNOLOGY 2021; 33:045501. [PMID: 34610585 DOI: 10.1088/1361-6528/ac2d0b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 10/05/2021] [Indexed: 06/13/2023]
Abstract
Glucose electrochemical sensors based on nanostructures of CuO/Cu(OH)2onto graphene paper were prepared by thermal (solid) and nanosecond pulsed laser (molten phase) dewetting of a CuO layer 6 nm thin deposited by sputtering. Dewetted systems, obtained without the use of any binder, act as array of nanoelectrodes. Solid state and molten phase dewetting produce nanostructures of copper oxide-hydroxide with different average size, shape and surface composition. Molten phase dewetting originates particles with size below 100 nm, while solid state dewetting produces particles with average size of about 200 nm. Moreover, molten phase dewetting produce drop-shaped nanostructures, conversely nanostructures derived from solid state dewetting are multifaceted. X-ray photoelectron spectroscopy (XPS) characterization revealed that the surface of nanostructures is formed by a copper(II) species CuO and Cu(OH)2. Shape of anodic branch of the cyclic voltammograms of glucose in alkali solution evidenced a convergent diffusion mechanism. Analytical performances in amperometric mode are as good as or better than other sensors based on copper oxide. Amperometric detection of glucose was done at potential as low as 0.4 V versus saturated calomel electrode by both types of electrodes. Linear range from 50μM to 10 mM, sensitivity ranging from 7 to 43μA cm-2mM-1and detection limit of 7μM was obtained. Good analytical performances were obtained by laser dewetted electrodes with a low copper content up to 1.2 by atoms percentage of the surface. Analytical performance of the proposed electrodes is compliant for the determination of glucose both in blood serum, saliva or tear.
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Affiliation(s)
- Antonino Scandurra
- Department of Physics and Astronomy Ettore Majorana of University of Catania, via Santa Sofia 64, 95123 Catania, Italy
- Institute for Microelectronics and Microsystems of National Research Council of Italy (CNR-IMM), via Santa Sofia 64, 95123 Catania, Italy
| | - Maria Censabella
- Department of Physics and Astronomy Ettore Majorana of University of Catania, via Santa Sofia 64, 95123 Catania, Italy
- Institute for Microelectronics and Microsystems of National Research Council of Italy (CNR-IMM), via Santa Sofia 64, 95123 Catania, Italy
| | - Stefano Boscarino
- Department of Physics and Astronomy Ettore Majorana of University of Catania, via Santa Sofia 64, 95123 Catania, Italy
- Institute for Microelectronics and Microsystems of National Research Council of Italy (CNR-IMM), via Santa Sofia 64, 95123 Catania, Italy
| | | | - Maria Grazia Grimaldi
- Department of Physics and Astronomy Ettore Majorana of University of Catania, via Santa Sofia 64, 95123 Catania, Italy
- Institute for Microelectronics and Microsystems of National Research Council of Italy (CNR-IMM), via Santa Sofia 64, 95123 Catania, Italy
| | - Francesco Ruffino
- Department of Physics and Astronomy Ettore Majorana of University of Catania, via Santa Sofia 64, 95123 Catania, Italy
- Institute for Microelectronics and Microsystems of National Research Council of Italy (CNR-IMM), via Santa Sofia 64, 95123 Catania, Italy
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How Chemoresistive Sensors Can Learn from Heterogeneous Catalysis. Hints, Issues, and Perspectives. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9080193] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The connection between heterogeneous catalysis and chemoresistive sensors is emerging more and more clearly, as concerns the well-known case of supported noble metals nanoparticles. On the other hand, it appears that a clear connection has not been set up yet for metal oxide catalysts. In particular, the catalytic properties of several different oxides hold the promise for specifically designed gas sensors in terms of selectivity towards given classes of analytes. In this review, several well-known metal oxide catalysts will be considered by first exposing solidly established catalytic properties that emerge from related literature perusal. On this basis, existing gas-sensing applications will be discussed and related, when possible, with the obtained catalysis results. Then, further potential sensing applications will be proposed based on the affinity of the catalytic pathways and possible sensing pathways. It will appear that dialogue with heterogeneous catalysis may help workers in chemoresistive sensors to design new systems and to gain remarkable insight into the existing sensing properties, in particular by applying the approaches and techniques typical of catalysis. However, several divergence points will appear between metal oxide catalysis and gas-sensing. Nevertheless, it will be pointed out how such divergences just push to a closer exchange between the two fields by using the catalysis knowledge as a toolbox for investigating the sensing mechanisms.
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Structural, Optical, and Electrical Properties of Copper Oxide Films Grown by the SILAR Method with Post-Annealing. COATINGS 2021. [DOI: 10.3390/coatings11070864] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Copper oxides are widely used in photocatalysts, sensors, batteries, optoelectronic, and electronic devices. In order to obtain different material properties to meet the requirements of different application fields, varied technologies and process conditions are used to prepare copper oxides. In this work, copper oxide films were grown on glass substrates by a successive ionic layer adsorption and reaction (SILAR) method with subsequent annealing under an atmospheric environment. The films were characterized by using an X-ray diffractometer, Raman spectrometer, Scanning electron microscope, UV-Visible-NIR spectrophotometer, and Hall Effect measurement. The results show that the as-deposited film has a Cu2O crystal structure, which begins to transform into Cu2O-CuO mixed crystal and CuO crystal structure after annealing at 300 °C for a period of time, resulting in the bandgap of being reduced from 1.90 to 1.34 eV. The results show that not only are the crystal structure and bandgap of the films affected by the post-annealing temperature and time, but also the resistivity, carrier concentration, and mobility of the films are varied with the annealing conditions. In addition, the film with a Cu2O-CuO mixed crystal shows a high carrier mobility of 93.7 cm2·V−1·s−1 and a low carrier concentration of 1.8 × 1012 cm−3 due to the formation of a Cu2O-CuO heterojuction.
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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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