51
|
Zhao Y, Su Y, Guo M, Liu L, Chen P, Song A, Yu W, Hu S, Zhao R, Fang Z, Zhang H, Zhao Y, Liang W. Schottky Contacts Regularized Linear Regression for Signal Inconsistency Circumvent in Resistive Gas Micro-Nanosensors. SMALL METHODS 2021; 5:e2101194. [PMID: 34928009 DOI: 10.1002/smtd.202101194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 10/25/2021] [Indexed: 06/14/2023]
Abstract
In the frontier resistive micro-nano gas sensors, the change rate reliability between the measured quantity and output signals has long been puzzled by the ineluctable device-to-device and run-to-run disparities. Here, a neotype sensing data interpretation method to circumvent these signal inconsistencies is reported. The method is based on discovery of a strong linear relation between the initial resistance in air (Ra ) and the absolute change in resistance after exposure to target gas (Ra -Rg ). Metal oxide gas sensors based on a micro-hot-plate are employed as the model system. The study finds that such correlation has a wide universality, even for devices incorporated with different sensing materials or under different gas atmosphere. Furthermore, this rule can also be extensible to graphene-based interdigital microelectrode. In situ probe scanning analyses illuminate that the linear dependence is closely related to work function matching level between metal electrode and sensitive layer. The Schottky barrier at metal-semiconductor junctions is the prominent parameter, whose height (ϕB ) can fundamentally impact material/electrode contact resistance, thereby further affecting the realistic nature expression of sensing materials. Using this correlation, a calibration procedure is proposed and embed in a fully integrated pocket-size sensor prototype, whose response outcomes demonstrated high credibility as compared to commercial apparatus.
Collapse
Affiliation(s)
- Yuxin Zhao
- School of Chemical Engineering & Technology, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Yue Su
- Beijing National Center for Condensed Matter Physics, Beijing Key Laboratory for Nanomaterials and Nanodevices, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- College of Physical Science and Technology, Xiamen University, Xiamen, 361005, P. R. China
| | - Mengya Guo
- School of Chemical Engineering & Technology, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Liqun Liu
- School of Chemical Engineering & Technology, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Peng Chen
- Beijing National Center for Condensed Matter Physics, Beijing Key Laboratory for Nanomaterials and Nanodevices, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Anqi Song
- School of Chemical Engineering & Technology, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Wei Yu
- Beijing National Center for Condensed Matter Physics, Beijing Key Laboratory for Nanomaterials and Nanodevices, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Shi Hu
- Department of Chemistry, School of Science, Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University, Tianjin, 300072, P. R. China
| | - Rongjian Zhao
- Institute of Electronics, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Zhen Fang
- Institute of Electronics, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Huacheng Zhang
- School of Chemical Engineering & Technology, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - Yanli Zhao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Wenjie Liang
- Beijing National Center for Condensed Matter Physics, Beijing Key Laboratory for Nanomaterials and Nanodevices, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| |
Collapse
|
52
|
Pereira PF, de Sousa Picciani PH, Calado V, Tonon RV. Electrical gas sensors for meat freshness assessment and quality monitoring: A review. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.08.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
53
|
Wang A, Liang M, Xiang Q, Xue J, Wang H. Mixed Oxygen Ionic and Electronic Conducting Membrane Reactors for Pure Chemicals Production. CHEM-ING-TECH 2021. [DOI: 10.1002/cite.202100160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ao Wang
- South China University of Technology School of Chemistry & Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product Technology No. 381 Wushan Road 510640 Guangzhou China
| | - Man Liang
- South China University of Technology School of Chemistry & Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product Technology No. 381 Wushan Road 510640 Guangzhou China
| | - Qingyun Xiang
- South China University of Technology School of Chemistry & Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product Technology No. 381 Wushan Road 510640 Guangzhou China
| | - Jian Xue
- South China University of Technology School of Chemistry & Chemical Engineering Guangdong Provincial Key Lab of Green Chemical Product Technology No. 381 Wushan Road 510640 Guangzhou China
| | - Haihui Wang
- Tsinghua University Beijing Key Laboratory of Membrane Materials and Engineering Department of Chemical Engineering 100084 Beijing China
| |
Collapse
|
54
|
Wang B, Sun L, Schneider-Ramelow M, Lang KD, Ngo HD. Recent Advances and Challenges of Nanomaterials-Based Hydrogen Sensors. MICROMACHINES 2021; 12:1429. [PMID: 34832840 PMCID: PMC8626019 DOI: 10.3390/mi12111429] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/18/2021] [Accepted: 11/18/2021] [Indexed: 12/25/2022]
Abstract
Safety is a crucial issue in hydrogen energy applications due to the unique properties of hydrogen. Accordingly, a suitable hydrogen sensor for leakage detection must have at least high sensitivity and selectivity, rapid response/recovery, low power consumption and stable functionality, which requires further improvements on the available hydrogen sensors. In recent years, the mature development of nanomaterials engineering technologies, which facilitate the synthesis and modification of various materials, has opened up many possibilities for improving hydrogen sensing performance. Current research of hydrogen detection sensors based on both conservational and innovative materials are introduced in this review. This work mainly focuses on three material categories, i.e., transition metals, metal oxide semiconductors, and graphene and its derivatives. Different hydrogen sensing mechanisms, such as resistive, capacitive, optical and surface acoustic wave-based sensors, are also presented, and their sensing performances and influence based on different nanostructures and material combinations are compared and discussed, respectively. This review is concluded with a brief outlook and future development trends.
Collapse
Affiliation(s)
- Bei Wang
- Department of Microsystem Technology, University of Applied Sciences Berlin, 12459 Berlin, Germany
- Fraunhofer Institute for Reliability and Microintegration IZM, 13355 Berlin, Germany; (M.S.-R.); (K.-D.L.)
| | - Ling Sun
- Department of Mathematics, Free University Berlin, 14195 Berlin, Germany;
| | - Martin Schneider-Ramelow
- Fraunhofer Institute for Reliability and Microintegration IZM, 13355 Berlin, Germany; (M.S.-R.); (K.-D.L.)
- Center of Microperipheric Technologies, Technical University Berlin, 13355 Berlin, Germany
| | - Klaus-Dieter Lang
- Fraunhofer Institute for Reliability and Microintegration IZM, 13355 Berlin, Germany; (M.S.-R.); (K.-D.L.)
- Center of Microperipheric Technologies, Technical University Berlin, 13355 Berlin, Germany
| | - Ha-Duong Ngo
- Department of Microsystem Technology, University of Applied Sciences Berlin, 12459 Berlin, Germany
- Fraunhofer Institute for Reliability and Microintegration IZM, 13355 Berlin, Germany; (M.S.-R.); (K.-D.L.)
| |
Collapse
|
55
|
Kang X, Yip S, Meng Y, Wang W, Li D, Liu C, Ho JC. High-performance electrically transduced hazardous gas sensors based on low-dimensional nanomaterials. NANOSCALE ADVANCES 2021; 3:6254-6270. [PMID: 36133491 PMCID: PMC9419631 DOI: 10.1039/d1na00433f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 09/09/2021] [Indexed: 06/16/2023]
Abstract
Low-dimensional nanomaterials have been proven as promising high-performance gas sensing components due to their fascinating structural, physical, chemical, and electronic characteristics. In particular, materials with low dimensionalities (i.e., 0D, 1D, and 2D) possess an extremely large surface area-to-volume ratio to expose abundant active sites for interactions with molecular analytes. Gas sensors based on these materials exhibit a sensitive response to subtle external perturbations on sensing channel materials via electrical transduction, demonstrating a fast response/recovery, specific selectivity, and remarkable stability. Herein, we comprehensively elaborate gas sensing performances in the field of sensitive detection of hazardous gases with diverse low-dimensional sensing materials and their hybrid combinations. We will first introduce the common configurations of gas sensing devices and underlying transduction principles. Then, the main performance parameters of gas sensing devices and subsequently the main underlying sensing mechanisms governing their detection operation process are outlined and described. Importantly, we also elaborate the compositional and structural characteristics of various low-dimensional sensing materials, exemplified by the corresponding sensing systems. Finally, our perspectives on the challenges and opportunities confronting the development and future applications of low-dimensional materials for high-performance gas sensing are also presented. The aim is to provide further insights into the material design of different nanostructures and to establish relevant design guidelines to facilitate the device performance enhancement of nanomaterial based gas sensors.
Collapse
Affiliation(s)
- Xiaolin Kang
- Department of Materials Science and Engineering, City University of Hong Kong Kowloon 999077 Hong Kong SAR China
| | - SenPo Yip
- Institute for Materials Chemistry and Engineering, Kyushu University Fukuoka 816-8580 Japan
| | - You Meng
- Department of Materials Science and Engineering, City University of Hong Kong Kowloon 999077 Hong Kong SAR China
- State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong Kowloon 999077 Hong Kong SAR China
| | - Wei Wang
- Department of Materials Science and Engineering, City University of Hong Kong Kowloon 999077 Hong Kong SAR China
| | - Dengji Li
- Department of Materials Science and Engineering, City University of Hong Kong Kowloon 999077 Hong Kong SAR China
| | - Chuntai Liu
- Key Laboratory of Advanced Materials Processing & Mold (Zhengzhou University), Ministry of Education Zhengzhou 450002 China
| | - Johnny C Ho
- Department of Materials Science and Engineering, City University of Hong Kong Kowloon 999077 Hong Kong SAR China
- Institute for Materials Chemistry and Engineering, Kyushu University Fukuoka 816-8580 Japan
- State Key Laboratory of Terahertz and Millimeter Waves, City University of Hong Kong Kowloon 999077 Hong Kong SAR China
| |
Collapse
|
56
|
Abstract
As an emerging class of hybrid nanoporous materials, metal-organic frameworks (MOFs) have attracted significant attention as promising multifunctional building blocks for the development of highly sensitive and selective gas sensors due to their unique properties, such as large surface area, highly diversified structures, functionalizable sites and specific adsorption affinities. Here, we provide a review of recent advances in the design and fabrication of MOF nanomaterials for the low-temperature detection of different gases for air quality and environmental monitoring applications. The impact of key structural parameters including surface morphologies, metal nodes, organic linkers and functional groups on the sensing performance of state-of-the-art sensing technologies are discussed. This review is concluded by summarising achievements and current challenges, providing a future perspective for the development of the next generation of MOF-based nanostructured materials for low-temperature detection of gas molecules in real-world environments.
Collapse
|
57
|
Allsop T, Neal R. A Review: Application and Implementation of Optic Fibre Sensors for Gas Detection. SENSORS (BASEL, SWITZERLAND) 2021; 21:6755. [PMID: 34695970 PMCID: PMC8537185 DOI: 10.3390/s21206755] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/04/2021] [Accepted: 10/08/2021] [Indexed: 11/16/2022]
Abstract
At the present time, there are major concerns regarding global warming and the possible catastrophic influence of greenhouse gases on climate change has spurred the research community to investigate and develop new gas-sensing methods and devices for remote and continuous sensing. Furthermore, there are a myriad of workplaces, such as petrochemical and pharmacological industries, where reliable remote gas tests are needed so that operatives have a safe working environment. The authors have concentrated their efforts on optical fibre sensing of gases, as we became aware of their increasing range of applications. Optical fibre gas sensors are capable of remote sensing, working in various environments, and have the potential to outperform conventional metal oxide semiconductor (MOS) gas sensors. Researchers are studying a number of configurations and mechanisms to detect specific gases and ways to enhance their performances. Evidence is growing that optical fibre gas sensors are superior in a number of ways, and are likely to replace MOS gas sensors in some application areas. All sensors use a transducer to produce chemical selectivity by means of an overlay coating material that yields a binding reaction. A number of different structural designs have been, and are, under investigation. Examples include tilted Bragg gratings and long period gratings embedded in optical fibres, as well as surface plasmon resonance and intra-cavity absorption. The authors believe that a review of optical fibre gas sensing is now timely and appropriate, as it will assist current researchers and encourage research into new photonic methods and techniques.
Collapse
Affiliation(s)
- Thomas Allsop
- School of Engineering and Computer Science, University of Hull, Hull HU6 7RX, UK
- Aston Institute of Photonic Technologies (AIPT), Aston University, Aston Triangle, Birmingham B4 7ET, UK
| | - Ronald Neal
- School of Engineering, Computing and Mathematics, University of Plymouth, Plymouth PL4 8AA, UK;
| |
Collapse
|
58
|
Valt M, Caporali M, Fabbri B, Gaiardo A, Krik S, Iacob E, Vanzetti L, Malagù C, Banchelli M, D’Andrea C, Serrano-Ruiz M, Vanni M, Peruzzini M, Guidi V. Air Stable Nickel-Decorated Black Phosphorus and Its Room-Temperature Chemiresistive Gas Sensor Capabilities. ACS APPLIED MATERIALS & INTERFACES 2021; 13:44711-44722. [PMID: 34506713 PMCID: PMC8461602 DOI: 10.1021/acsami.1c10763] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Indexed: 06/13/2023]
Abstract
In the rapidly emerging field of layered two-dimensional functional materials, black phosphorus, the P-counterpart of graphene, is a potential candidate for various applications, e.g., nanoscale optoelectronics, rechargeable ion batteries, electrocatalysts, thermoelectrics, solar cells, and sensors. Black phosphorus has shown superior chemical sensing performance; in particular, it is selective for the detection of NO2, an environmental toxic gas, for which black phosphorus has highlighted high sensitivity at a ppb level. In this work, by applying a multiscale characterization approach, we demonstrated a stability and functionality improvement of nickel-decorated black phosphorus films for gas sensing prepared by a simple, reproducible, and affordable deposition technique. Furthermore, we studied the electrical behavior of these films once implemented as functional layers in gas sensors by exposing them to different gaseous compounds and under different relative humidity conditions. Finally, the influence on sensing performance of nickel nanoparticle dimensions and concentration correlated to the decoration technique and film thickness was investigated.
Collapse
Affiliation(s)
- Matteo Valt
- Department
of Physics and Earth Sciences, University
of Ferrara, Via G. Saragat 1/C, Ferrara 44122, Italy
| | - Maria Caporali
- Italian
National Council for Research - Institute for the Chemistry of OrganoMetallic
Compounds (CNR ICCOM), Via Madonna del Piano 10, Sesto Fiorentino 50019, Italy
| | - Barbara Fabbri
- Department
of Physics and Earth Sciences, University
of Ferrara, Via G. Saragat 1/C, Ferrara 44122, Italy
| | - Andrea Gaiardo
- MNF
- Micro Nano Facility Unit, Sensors and Devices Center, Bruno Kessler Foundation, Via Sommarive 18, Trento 38123, Italy
| | - Soufiane Krik
- Department
of Physics and Earth Sciences, University
of Ferrara, Via G. Saragat 1/C, Ferrara 44122, Italy
- MNF
- Micro Nano Facility Unit, Sensors and Devices Center, Bruno Kessler Foundation, Via Sommarive 18, Trento 38123, Italy
| | - Erica Iacob
- MNF
- Micro Nano Facility Unit, Sensors and Devices Center, Bruno Kessler Foundation, Via Sommarive 18, Trento 38123, Italy
| | - Lia Vanzetti
- MNF
- Micro Nano Facility Unit, Sensors and Devices Center, Bruno Kessler Foundation, Via Sommarive 18, Trento 38123, Italy
| | - Cesare Malagù
- Department
of Physics and Earth Sciences, University
of Ferrara, Via G. Saragat 1/C, Ferrara 44122, Italy
| | - Martina Banchelli
- Italian
National Council for Research, Institute of Applied Physics “Nello
Carrara”, Via Madonna del Piano 10, Sesto Fiorentino 50019, Italy
| | - Cristiano D’Andrea
- Italian
National Council for Research, Institute of Applied Physics “Nello
Carrara”, Via Madonna del Piano 10, Sesto Fiorentino 50019, Italy
| | - Manuel Serrano-Ruiz
- Italian
National Council for Research - Institute for the Chemistry of OrganoMetallic
Compounds (CNR ICCOM), Via Madonna del Piano 10, Sesto Fiorentino 50019, Italy
| | - Matteo Vanni
- Italian
National Council for Research - Institute for the Chemistry of OrganoMetallic
Compounds (CNR ICCOM), Via Madonna del Piano 10, Sesto Fiorentino 50019, Italy
| | - Maurizio Peruzzini
- Italian
National Council for Research - Institute for the Chemistry of OrganoMetallic
Compounds (CNR ICCOM), Via Madonna del Piano 10, Sesto Fiorentino 50019, Italy
| | - Vincenzo Guidi
- Department
of Physics and Earth Sciences, University
of Ferrara, Via G. Saragat 1/C, Ferrara 44122, Italy
| |
Collapse
|
59
|
Shalini Devi KS, Anantharamakrishnan A, Maheswari Krishnan U. Expanding Horizons of Metal Oxide‐based Chemical and Electrochemical Sensors. ELECTROANAL 2021. [DOI: 10.1002/elan.202100087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- K. S. Shalini Devi
- Centre for Nanotechnology and Advanced Biomaterials (CeNTAB) SASTRA Deemed University Thanjavur India – 613401
- School of Chemical and Biotechnology SASTRA Deemed University Thanjavur India – 613401
| | - Aadhav Anantharamakrishnan
- Centre for Nanotechnology and Advanced Biomaterials (CeNTAB) SASTRA Deemed University Thanjavur India – 613401
- School of Chemical and Biotechnology SASTRA Deemed University Thanjavur India – 613401
| | - Uma Maheswari Krishnan
- Centre for Nanotechnology and Advanced Biomaterials (CeNTAB) SASTRA Deemed University Thanjavur India – 613401
- School of Chemical and Biotechnology SASTRA Deemed University Thanjavur India – 613401
- School of Arts Science and Humanities SASTRA Deemed University Thanjavur India – 613401
| |
Collapse
|
60
|
Insights about CO Gas-Sensing Mechanism with NiO-Based Gas Sensors—The Influence of Humidity. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9090244] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Polycrystalline NiO thick film-based gas sensors have been exposed to different test gas atmospheres at 250 °C and measured via simultaneous electrical resistance and work function investigations. Accordingly, we decoupled different features manifested toward the potential changes, i.e., work function, band-bending, and electron affinity. The experimental results have shown that the presence of moisture induces an unusual behavior toward carbon monoxide (CO) detection by considering different surface adsorption sites. On this basis, we derived an appropriate detection mechanism capable of explaining the lack of moisture influence over the CO detection with NiO-sensitive materials. As such, CO might have both chemical and dipolar interactions with pre-adsorbed or lattice oxygen species, thus canceling out the effect of moisture. Additionally, morphology, structure, and surface chemistry were addressed, and the results have been linked to the sensing properties envisaging the role played by the porous quasispherical–hollow structures and surface hydration.
Collapse
|
61
|
Bąk B, Wilk J, Artiemjew P, Wilde J. Recording the Presence of Peanibacillus larvae larvae Colonies on MYPGP Substrates Using a Multi-Sensor Array Based on Solid-State Gas Sensors. SENSORS 2021; 21:s21144917. [PMID: 34300655 PMCID: PMC8309915 DOI: 10.3390/s21144917] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 07/09/2021] [Accepted: 07/11/2021] [Indexed: 11/23/2022]
Abstract
American foulbrood is a dangerous disease of bee broods found worldwide, caused by the Paenibacillus larvae larvae L. bacterium. In an experiment, the possibility of detecting colonies of this bacterium on MYPGP substrates (which contains yeast extract, Mueller-Hinton broth, glucose, K2HPO4, sodium pyruvate, and agar) was tested using a prototype of a multi-sensor recorder of the MCA-8 sensor signal with a matrix of six semiconductors: TGS 823, TGS 826, TGS 832, TGS 2600, TGS 2602, and TGS 2603 from Figaro. Two twin prototypes of the MCA-8 measurement device, M1 and M2, were used in the study. Each prototype was attached to two laboratory test chambers: a wooden one and a polystyrene one. For the experiment, the strain used was P. l. larvae ATCC 9545, ERIC I. On MYPGP medium, often used for laboratory diagnosis of American foulbrood, this bacterium produces small, transparent, smooth, and shiny colonies. Gas samples from over culture media of one- and two-day-old foulbrood P. l. larvae (with no colonies visible to the naked eye) and from over culture media older than 2 days (with visible bacterial colonies) were examined. In addition, the air from empty chambers was tested. The measurement time was 20 min, including a 10-min testing exposure phase and a 10-min sensor regeneration phase. The results were analyzed in two variants: without baseline correction and with baseline correction. We tested 14 classifiers and found that a prototype of a multi-sensor recorder of the MCA-8 sensor signal was capable of detecting colonies of P. l. larvae on MYPGP substrate with a 97% efficiency and could distinguish between MYPGP substrates with 1–2 days of culture, and substrates with older cultures. The efficacy of copies of the prototypes M1 and M2 was shown to differ slightly. The weighted method with Canberra metrics (Canberra.811) and kNN with Canberra and Manhattan metrics (Canberra. 1nn and manhattan.1nn) proved to be the most effective classifiers.
Collapse
Affiliation(s)
- Beata Bąk
- Department of Poultry Science and Apiculture, Faculty of Animal Bioengineering, University of Warmia and Mazury in Olsztyn, Sloneczna 48, 10-957 Olsztyn, Poland; (J.W.); (J.W.)
- Correspondence:
| | - Jakub Wilk
- Department of Poultry Science and Apiculture, Faculty of Animal Bioengineering, University of Warmia and Mazury in Olsztyn, Sloneczna 48, 10-957 Olsztyn, Poland; (J.W.); (J.W.)
| | - Piotr Artiemjew
- Faculty of Mathematics and Computer Science, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland;
| | - Jerzy Wilde
- Department of Poultry Science and Apiculture, Faculty of Animal Bioengineering, University of Warmia and Mazury in Olsztyn, Sloneczna 48, 10-957 Olsztyn, Poland; (J.W.); (J.W.)
| |
Collapse
|
62
|
Manzini I, Schild D, Di Natale C. Principles of odor coding in vertebrates and artificial chemosensory systems. Physiol Rev 2021; 102:61-154. [PMID: 34254835 DOI: 10.1152/physrev.00036.2020] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The biological olfactory system is the sensory system responsible for the detection of the chemical composition of the environment. Several attempts to mimic biological olfactory systems have led to various artificial olfactory systems using different technical approaches. Here we provide a parallel description of biological olfactory systems and their technical counterparts. We start with a presentation of the input to the systems, the stimuli, and treat the interface between the external world and the environment where receptor neurons or artificial chemosensors reside. We then delineate the functions of receptor neurons and chemosensors as well as their overall I-O relationships. Up to this point, our account of the systems goes along similar lines. The next processing steps differ considerably: while in biology the processing step following the receptor neurons is the "integration" and "processing" of receptor neuron outputs in the olfactory bulb, this step has various realizations in electronic noses. For a long period of time, the signal processing stages beyond the olfactory bulb, i.e., the higher olfactory centers were little studied. Only recently there has been a marked growth of studies tackling the information processing in these centers. In electronic noses, a third stage of processing has virtually never been considered. In this review, we provide an up-to-date overview of the current knowledge of both fields and, for the first time, attempt to tie them together. We hope it will be a breeding ground for better information, communication, and data exchange between very related but so far little connected fields.
Collapse
Affiliation(s)
- Ivan Manzini
- Animal Physiology and Molecular Biomedicine, Justus-Liebig-University Gießen, Gießen, Germany
| | - Detlev Schild
- Institute of Neurophysiology and Cellular Biophysics, University Medical Center, University of Göttingen, Göttingen, Germany
| | - Corrado Di Natale
- Department of Electronic Engineering, University of Rome Tor Vergata, Rome, Italy
| |
Collapse
|
63
|
Mahmood MH, Maleque MA. Effective Parameter of Nano-CuO Coating on CO Gas-Sensing Performance and Heat Transfer Efficiency. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2021. [DOI: 10.1007/s13369-020-05233-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
AbstractThe high gas-sensing performance of semiconductors is mainly due to the high surface-to-volume ratio because it permits a large exposed surface area for gas detection. This paper presents an evaluation study for the effects of nano-CuO coating parameters on the CO gas-sensing performance. The effects on gas-sensing performance and heat transfer efficiency of CuO coating were evaluated by investigating the effects of coating parameters (concentration, temperature, and solution speed) on thickness, grain size, and porosity. The CuO nanoparticle coatings were synthesized using the oxidation method at various operating conditions. Coating characteristics were investigated using X-ray diffraction, energy dispersive X-ray Spectroscopy, field emission scanning electron microscopy, and electrical resistivity meter. The average coating thickness, grain size, and porosity were around 13 μm, 48 nm, and 30%, respectively. The thermal transfer and gas-sensing properties of CuO coating were evaluated according to the total surface area of the coating formed at various operating conditions. The gas-sensing and thermal transfer performance were obtained from the optimization of coating parameters based on the coating morphology to achieve the highest contact surface area. The coating’s surface area was increased by 350 times, which improved the heat transfer efficiency of 96.5%. The result shows that the coating thickness increased with the increase in solution concentration and decrease the temperature. The results also show that the sensitivity of the coating for CO gas was increased by 50% due to the reduction of coatings grain size.
Collapse
|
64
|
Al-Khezraji AA, Abd Ali HR, Yousif AA, Abed HR. Effect of mixed ZnO/CuO nanoparticles on the structural, morphological, and topographical properties. JOURNAL OF PHYSICS: CONFERENCE SERIES 2021; 1963:012053. [DOI: 10.1088/1742-6596/1963/1/012053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Abstract
In the present work, pure and composite ZnO/CuO were effectively deposited by chemical spray pyrolysis. Structural, morphological, and topographical features have been well investigated and explained. XRD analysis showed a polycrystalline structure with hexagonal and monoclinic systems for ZnO and CuO, respectively. The crystal size that calculated from XRD patterns has decreased with the increase of CuO content, while the dislocation density and the micro strain have increased. These results lead to high defects in the structure of the nanocomposite which will be more efficient in a specific application. Moreover, the morphology of the samples was examined by FESEM and it was spherical-like shapes and has elevated points, whereas the EDX confirm the existence of the employed materials without any other undesired materials. The topography of the surface depicted a slightly rough surface which will be suitable for different nanoelectronics devices.
Collapse
|
65
|
Wang Q, Wu H, Wang Y, Li J, Yang Y, Cheng X, Luo Y, An B, Pan X, Xie E. Ex-situ XPS analysis of yolk-shell Sb 2O 3/WO 3 for ultra-fast acetone resistive sensor. JOURNAL OF HAZARDOUS MATERIALS 2021; 412:125175. [PMID: 33516115 DOI: 10.1016/j.jhazmat.2021.125175] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/29/2020] [Accepted: 01/16/2021] [Indexed: 06/12/2023]
Abstract
The preparation of fast, highly responsive and reliable gas sensing devices for the detection of acetone gas is considered to be a key challenge for the development of accurate disease diagnosis systems through exhaled respiratory gases. In the paper, yolk shell Sb2O3/WO3 is synthesized and its gas sensing performance was studied by static test system. Special, the maximum response value of 1:1 Sb2O3/WO3 yolk-shell (WO3-1 YSL) sensor to 100 ppm acetone can reach as high as 50.0 at 200 ℃. And it also exhibits excellent response/recover time (4 s/5 s), low detection limit (2 ppm) and superior selectivity towards acetone. More importantly, in mixed selective gas test, the sensor shows high selectivity towards acetone. And the mechanism is analyzed by ex-situ XPS. The excellent gas-sensing performance can be attributed to unique yolk-shell structure, which facilitates the rapid transport of charge carriers from the surface to the bulk and provides more active sites for gas adsorption and desorption; the heterojunction between of Sb2O3 and WO3, which promotes oxygen pre-adsorption on the surface and increasing the interfacial potential; the increased oxygen vacancies which allowing more chemisorbed oxygen to form.
Collapse
Affiliation(s)
- Qiao Wang
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, PR China
| | - Hongchang Wu
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, PR China
| | - Yanrong Wang
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, PR China.
| | - Jianpeng Li
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, PR China
| | - Yifan Yang
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, PR China
| | - Xu Cheng
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, PR China
| | - Yibing Luo
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, PR China
| | - Beixi An
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, PR China
| | - Xiaojun Pan
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, PR China
| | - Erqing Xie
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, PR China.
| |
Collapse
|
66
|
Yuan Y, Wu H, Bu X, Wu Q, Wang X, Han C, Li X, Wang X, Liu W. Improving Ammonia Detecting Performance of Polyaniline Decorated rGO Composite Membrane with GO Doping. MATERIALS 2021; 14:ma14112829. [PMID: 34070649 PMCID: PMC8198450 DOI: 10.3390/ma14112829] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/18/2021] [Accepted: 05/19/2021] [Indexed: 12/24/2022]
Abstract
Gas-sensing performance of graphene-based material has been investigated widely in recent years. Polyaniline (PANI) has been reported as an effective method to improve ammonia gas sensors’ response. A gas sensor based on a composite of rGO film and protic acid doped polyaniline (PA-PANI) with GO doping is reported in this work. GO mainly provides NH3 adsorption sites, and PA-PANI is responsible for charge transfer during the gas-sensing response process. The experimental results indicate that the NH3 gas response of rGO is enhanced significantly by decorating with PA-PANI. Moreover, a small amount of GO mixed with PA-PANI is beneficial to increase the gas response, which showed an improvement of 262.5% at 25 ppm comparing to no GO mixing in PA-PANI.
Collapse
Affiliation(s)
- Yubin Yuan
- School of Microelectronics, School of Electronics and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (Y.Y.); (H.W.); (X.B.); (Q.W.); (X.W.); (C.H.); (X.L.); (X.W.)
- The Key Lab of Micro-nano Electronics and System Integration of Xi’an City, Xi’an 710049, China
| | - Haiyang Wu
- School of Microelectronics, School of Electronics and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (Y.Y.); (H.W.); (X.B.); (Q.W.); (X.W.); (C.H.); (X.L.); (X.W.)
- The Key Lab of Micro-nano Electronics and System Integration of Xi’an City, Xi’an 710049, China
| | - Xiangrui Bu
- School of Microelectronics, School of Electronics and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (Y.Y.); (H.W.); (X.B.); (Q.W.); (X.W.); (C.H.); (X.L.); (X.W.)
- The Key Lab of Micro-nano Electronics and System Integration of Xi’an City, Xi’an 710049, China
| | - Qiang Wu
- School of Microelectronics, School of Electronics and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (Y.Y.); (H.W.); (X.B.); (Q.W.); (X.W.); (C.H.); (X.L.); (X.W.)
- The Key Lab of Micro-nano Electronics and System Integration of Xi’an City, Xi’an 710049, China
| | - Xuming Wang
- School of Microelectronics, School of Electronics and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (Y.Y.); (H.W.); (X.B.); (Q.W.); (X.W.); (C.H.); (X.L.); (X.W.)
- The Key Lab of Micro-nano Electronics and System Integration of Xi’an City, Xi’an 710049, China
| | - Chuanyu Han
- School of Microelectronics, School of Electronics and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (Y.Y.); (H.W.); (X.B.); (Q.W.); (X.W.); (C.H.); (X.L.); (X.W.)
- The Key Lab of Micro-nano Electronics and System Integration of Xi’an City, Xi’an 710049, China
| | - Xin Li
- School of Microelectronics, School of Electronics and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (Y.Y.); (H.W.); (X.B.); (Q.W.); (X.W.); (C.H.); (X.L.); (X.W.)
- The Key Lab of Micro-nano Electronics and System Integration of Xi’an City, Xi’an 710049, China
- Guangdong Shunde Xi’an Jiaotong University Academy, Xi’an Jiaotong University, NO.3 Deshengdong Road, Daliang, Shunde District, Foshan 528300, China
| | - Xiaoli Wang
- School of Microelectronics, School of Electronics and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (Y.Y.); (H.W.); (X.B.); (Q.W.); (X.W.); (C.H.); (X.L.); (X.W.)
- The Key Lab of Micro-nano Electronics and System Integration of Xi’an City, Xi’an 710049, China
- School of Science, Xi’an Jiaotong University, Xi’an 710049, China
| | - Weihua Liu
- School of Microelectronics, School of Electronics and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (Y.Y.); (H.W.); (X.B.); (Q.W.); (X.W.); (C.H.); (X.L.); (X.W.)
- The Key Lab of Micro-nano Electronics and System Integration of Xi’an City, Xi’an 710049, China
- Research Institute of Xi’an Jiaotong University, Hangzhou 311215, China
- Correspondence: ; Tel.: +86-29-8266-3343
| |
Collapse
|
67
|
Nanda A, Singh V, Jha RK, Sinha J, Avasthi S, Bhat N. Growth-Temperature Dependent Unpassivated Oxygen Bonds Determine the Gas Sensing Abilities of Chemical Vapor Deposition-Grown CuO Thin Films. ACS APPLIED MATERIALS & INTERFACES 2021; 13:21936-21943. [PMID: 33913692 DOI: 10.1021/acsami.1c01085] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
CuO is a multifunctional metal oxide excellent for chemiresistive gas sensors. In this work, we report CuO-based NO2 sensors fabricated via chemical vapor deposition (CVD). CVD allows great control on composition, stoichiometry, impurity, roughness, and grain size of films. This endows sensors with high selectivity, responsivity, sensitivity, and repeatability, low hysteresis, and quick recovery. All these are achieved without the need of expensive and unscalable nanostructures, or heterojunctions, with a technologically mature CVD. Films deposited at very low temperatures (≤350 °C) are sensitive but slow due to traps and small grains. Films deposited at high temperatures (≥550 °C) are not hysteretic but suffer from low sensitivity and slow response due to lack of surface states. Films deposited at optimum temperatures (350-450 °C) combine the best aspects of both regimes to yield NO2 sensors with a response of 300 % at 5 ppm, sensitivity limit of 300 ppb, hysteresis of <20%, repeatable performance, and recovery time of ∼1 min. The work demonstrates that CVD might be a more effective way to deposit oxide films for gas sensors.
Collapse
Affiliation(s)
- Aman Nanda
- Centre for Nanoscience and Engineering, Indian Institute of Science, Bangalore, Karnataka 560012, India
| | - Vivek Singh
- Centre for Nanoscience and Engineering, Indian Institute of Science, Bangalore, Karnataka 560012, India
| | - Ravindra Kumar Jha
- Centre for Nanoscience and Engineering, Indian Institute of Science, Bangalore, Karnataka 560012, India
| | - Jyoti Sinha
- Centre for Nanoscience and Engineering, Indian Institute of Science, Bangalore, Karnataka 560012, India
| | - Sushobhan Avasthi
- Centre for Nanoscience and Engineering, Indian Institute of Science, Bangalore, Karnataka 560012, India
| | - Navakanta Bhat
- Centre for Nanoscience and Engineering, Indian Institute of Science, Bangalore, Karnataka 560012, India
| |
Collapse
|
68
|
Yang S, Lei G, Xu H, Lan Z, Wang Z, Gu H. Metal Oxide Based Heterojunctions for Gas Sensors: A Review. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1026. [PMID: 33920589 PMCID: PMC8073732 DOI: 10.3390/nano11041026] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/15/2021] [Accepted: 04/16/2021] [Indexed: 02/07/2023]
Abstract
The construction of heterojunctions has been widely applied to improve the gas sensing performance of composites composed of nanostructured metal oxides. This review summarises the recent progress on assembly methods and gas sensing behaviours of sensors based on nanostructured metal oxide heterojunctions. Various methods, including the hydrothermal method, electrospinning and chemical vapour deposition, have been successfully employed to establish metal oxide heterojunctions in the sensing materials. The sensors composed with the built nanostructured heterojunctions were found to show enhanced gas sensing performance with higher sensor responses and shorter response times to the targeted reducing or oxidising gases compare with those of the pure metal oxides. Moreover, the enhanced gas sensing mechanisms of the metal oxide-based heterojunctions to the reducing or oxidising gases are also discussed, with the main emphasis on the important role of the potential barrier on the accumulation layer.
Collapse
Affiliation(s)
- Shulin Yang
- Hubei Key Laboratory for Processing and Application of Catalytic Materials, School of Physics and Electronic Information, Huanggang Normal University, Huanggang 438000, China; (S.Y.); (G.L.); (Z.L.)
- Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices, Faculty of Physics and Electronic Sciences, Hubei University, Wuhan 430062, China;
| | - Gui Lei
- Hubei Key Laboratory for Processing and Application of Catalytic Materials, School of Physics and Electronic Information, Huanggang Normal University, Huanggang 438000, China; (S.Y.); (G.L.); (Z.L.)
- Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices, Faculty of Physics and Electronic Sciences, Hubei University, Wuhan 430062, China;
| | - Huoxi Xu
- Hubei Key Laboratory for Processing and Application of Catalytic Materials, School of Physics and Electronic Information, Huanggang Normal University, Huanggang 438000, China; (S.Y.); (G.L.); (Z.L.)
| | - Zhigao Lan
- Hubei Key Laboratory for Processing and Application of Catalytic Materials, School of Physics and Electronic Information, Huanggang Normal University, Huanggang 438000, China; (S.Y.); (G.L.); (Z.L.)
| | - Zhao Wang
- Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices, Faculty of Physics and Electronic Sciences, Hubei University, Wuhan 430062, China;
| | - Haoshuang Gu
- Hubei Key Laboratory for Processing and Application of Catalytic Materials, School of Physics and Electronic Information, Huanggang Normal University, Huanggang 438000, China; (S.Y.); (G.L.); (Z.L.)
- Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices, Faculty of Physics and Electronic Sciences, Hubei University, Wuhan 430062, China;
| |
Collapse
|
69
|
Forel S, Sacco L, Castan A, Florea I, Cojocaru CS. Simple and rapid gas sensing using a single-walled carbon nanotube field-effect transistor-based logic inverter. NANOSCALE ADVANCES 2021; 3:1582-1587. [PMID: 36132564 PMCID: PMC9419661 DOI: 10.1039/d0na00811g] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 01/30/2021] [Indexed: 05/22/2023]
Abstract
Single-walled carbon nanotubes (SWCNTs) are promising candidates for gas sensing applications, providing an efficient solution to the device miniaturization challenge and allowing low power consumption. SWCNT gas sensors are mainly based on field-effect transistors (SWCNT-FETs) where the modification of the current flowing through the nanotube is used for gas detection. A major limitation of these SWCNT-FETs lies in the difficulty to measure their transfer curves, since the flowing current typically varies between 10-12 and 10-3 A. Thus, voluminous and energy consuming systems are necessary, severely limiting the miniaturization and low energy consumption. Here, we propose an inverter device that combines two SWCNT-FETs which brings a concrete solution to these limitations and simplifies data processing. In this innovative sensing configuration, the gas detection is based on the variation of an electric potential in the volt range instead of a current intensity variation in the microampere range. In this study, the proof of concept is performed using NO2 gas but can be easily extended to a wide range of gases.
Collapse
Affiliation(s)
- Salomé Forel
- Laboratoire de Physique des Interfaces et des Couches Minces (LPICM), CNRS, Ecole Polytechnique, IP Paris 91128 Palaiseau Cedex France
| | - Leandro Sacco
- Laboratoire de Physique des Interfaces et des Couches Minces (LPICM), CNRS, Ecole Polytechnique, IP Paris 91128 Palaiseau Cedex France
| | - Alice Castan
- Laboratoire de Physique des Interfaces et des Couches Minces (LPICM), CNRS, Ecole Polytechnique, IP Paris 91128 Palaiseau Cedex France
| | - Ileana Florea
- Laboratoire de Physique des Interfaces et des Couches Minces (LPICM), CNRS, Ecole Polytechnique, IP Paris 91128 Palaiseau Cedex France
| | - Costel Sorin Cojocaru
- Laboratoire de Physique des Interfaces et des Couches Minces (LPICM), CNRS, Ecole Polytechnique, IP Paris 91128 Palaiseau Cedex France
| |
Collapse
|
70
|
Majhi SM, Mirzaei A, Navale S, Kim HW, Kim SS. Boosting the sensing properties of resistive-based gas sensors by irradiation techniques: a review. NANOSCALE 2021; 13:4728-4757. [PMID: 33645596 DOI: 10.1039/d0nr08448d] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The ongoing need to detect and monitor hazardous, volatile, and flammable gases has led to the use of gas sensors in several fields to improve safety and health issues. Conductometric type gas sensors, which have considerable advantages over other gas sensors, have thrived in numerous gas sensing fields. The ever-present key challenges and requirements of these sensors are to achieve excellent performance, including high sensitivity, good selectivity, low working temperature, and durability. Therefore, tremendous research effort has focused on improving these properties, and various state-of-the-art techniques have been reported. This review article discusses the recent advances and utilization of various irradiation techniques, including electron-beam, microwave, ion-beam, and gamma-ray irradiation, along with their investigation of the effects on the physicochemical properties of pre-synthesized nanomaterials, sensing performances, and related gas sensing mechanisms. A review of the progress on the effects of different irradiation techniques for boosting the sensing properties can contribute to the evolution of highly reliable sensors to assess the environment and health. For researchers, who work on gas sensors, this paper provides information on the current trends on the advances in the novel state-of-art of irradiated materials and their promising application in the sensitive detection of various toxic and VOCs.
Collapse
Affiliation(s)
- Sanjit Manohar Majhi
- Division of Materials Science and Engineering, Hanyang University, Seoul 04763, South Korea and The Research Institute of Industrial Science, Hanyang University, Seoul 04763, South Korea. and Department of Materials Science and Engineering, Inha University, Incheon 22212, South Korea.
| | - Ali Mirzaei
- Department of Materials Science and Engineering, Shiraz University of Technology, Shiraz 71557-13876, Iran
| | - Sachin Navale
- Division of Materials Science and Engineering, Hanyang University, Seoul 04763, South Korea and The Research Institute of Industrial Science, Hanyang University, Seoul 04763, South Korea. and Department of Materials Science and Engineering, Inha University, Incheon 22212, South Korea.
| | - Hyoun Woo Kim
- Division of Materials Science and Engineering, Hanyang University, Seoul 04763, South Korea and The Research Institute of Industrial Science, Hanyang University, Seoul 04763, South Korea.
| | - Sang Sub Kim
- Department of Materials Science and Engineering, Inha University, Incheon 22212, South Korea.
| |
Collapse
|
71
|
Yuvaraja S, Bhyranalyar VN, Bhat SA, Surya SG, Yelamaggad CV, Salama KN. A highly selective electron affinity facilitated H 2S sensor: the marriage of tris(keto-hydrazone) and an organic field-effect transistor. MATERIALS HORIZONS 2021; 8:525-537. [PMID: 34821268 DOI: 10.1039/d0mh01420f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Conjugated polymers (CPs) are emerging as part of a promising future for gas-sensing applications. However, some of their limitations, such as poor specificity, humidity sensitivity and poor ambient stability, remain persistent. Herein, a novel combination of a polymer-monomer heterostructure, derived from a CP (PDVT-10) and a newly reported monomer [tris(keto-hydrazone)] has been integrated in an organic field-effect transistor (OFET) platform to sense H2S selectively. The hybrid heterostructure shows an unprecedented sensitivity (525% ppm-1) and high selectivity toward H2S gas. In addition, we demonstrated that the PDVT-10/tris(keto-hydrazone) OFET sensor has the lowest limit of detection (1 ppb), excellent ambient stability (∼5% current degradation after 150 days), good response-recovery behavior, and exceptional electrical behavior and gas response reproducibility. This work can help pave the way to incorporate futuristic gas sensors in a multitude of applications.
Collapse
Affiliation(s)
- Saravanan Yuvaraja
- Sensors lab, Advanced Membranes and Porous Materials Center, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia.
| | | | | | | | | | | |
Collapse
|
72
|
Tseng TS, Hsiao MH, Chen PA, Lin SY, Chiu SW, Yao DJ. Utilization of a Gas-Sensing System to Discriminate Smell and to Monitor Fermentation during the Manufacture of Oolong Tea Leaves. MICROMACHINES 2021; 12:mi12010093. [PMID: 33477391 PMCID: PMC7829750 DOI: 10.3390/mi12010093] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 01/12/2021] [Accepted: 01/12/2021] [Indexed: 12/04/2022]
Abstract
The operational duration of shaking tea leaves is a critical factor in the manufacture of oolong tea; this duration influences the formation of its flavor and fragrance. The current method to control the duration of fermentation relies on the olfactory sense of tea masters; they monitor the entire process through their olfactory sense, and their experience decides the duration of shaking and setting. Because of this human factor and olfactory fatigue, it is difficult to define an optimum duration of shaking and setting; an inappropriate duration of shaking and setting deteriorates the quality of the tea. In this study, we used metal-oxide-semiconductor gas sensors to establish an electronic nose (E-nose) system and tested its feasibility. This research was divided into two experiments: distinguishing samples at various stages and an on-line experiment. The samples of tea leaves at various stages exhibited large differences in the level of grassy smell. From the experience of practitioners and from previous research, the samples could be categorized into three groups: before the first shaking (BS1), before the shaking group, and after the shaking group. We input the experimental results into a linear discriminant analysis to decrease the dimensions and to classify the samples into various groups. The results show that the smell can also be categorized into three groups. After distinguishing the samples with large differences, we conducted an on-line experiment in a tea factory and tried to monitor the smell variation during the manufacturing process. The results from the E-nose were similar to those of the sense of practitioners, which means that an E-nose has the possibility to replace the sensory function of practitioners in the future.
Collapse
Affiliation(s)
- Ting-Shiang Tseng
- Institute of NanoEngineering and MicroSystems, National Tsing Hua University, Hsinchu 30013, Taiwan; (T.-S.T.); (M.-H.H.)
| | - Mei-Hui Hsiao
- Institute of NanoEngineering and MicroSystems, National Tsing Hua University, Hsinchu 30013, Taiwan; (T.-S.T.); (M.-H.H.)
| | - Po-An Chen
- Plant Technology Laboratories, Agricultural Technology Research Institute, Hsinchu 30093, Taiwan;
| | - Shu-Yen Lin
- Department of Horticulture and Landscape Architecture, National Taiwan University, Taipei 10617, Taiwan;
| | | | - Da-Jeng Yao
- Institute of NanoEngineering and MicroSystems, National Tsing Hua University, Hsinchu 30013, Taiwan; (T.-S.T.); (M.-H.H.)
- Correspondence: ; Tel.: +886-3-5715131 (ext. 42850)
| |
Collapse
|
73
|
An B, Luo Y, Bai J, Wang Y, Cheng X, Li J, Wang Q, Yang Y, Xie E. Bimetal Pd/Ni functionalized WO 3 nanospheres for sensitive low-concentration hydrogen detection. CrystEngComm 2021. [DOI: 10.1039/d1ce00017a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
In this study, we used a hydrothermal method to prepare WO3 nanospheres doped with a bimetal of Pd and Ni and used them in hydrogen sensing.
Collapse
Affiliation(s)
- Beixi An
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
| | - Yibing Luo
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
| | - Jinglong Bai
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
| | - Yanrong Wang
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
| | - Xu Cheng
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
| | - Jianpeng Li
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
| | - Qiao Wang
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
| | - Yifan Yang
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
| | - Erqing Xie
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
| |
Collapse
|
74
|
Lattice expansion and oxygen vacancy of α-Fe 2O 3 during gas sensing. Talanta 2021; 221:121616. [PMID: 33076146 DOI: 10.1016/j.talanta.2020.121616] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 08/27/2020] [Accepted: 08/28/2020] [Indexed: 11/20/2022]
Abstract
Identifying the nature of gas-sensing material under the real-time operating condition is very critical for the research and development of gas sensors. In this work, we implement in situ Raman and XRD to investigate the gas-sensing nature of α-Fe2O3 sensing material, which derived from Fe-based metal-organic gel (MOG). The active mode of α-Fe2O3 as gas-sensing material originate from the thermally induced lattice expansion and the changes of surface oxygen vacancy of α-Fe2O3 could be reflected from the further monitored Raman scattering signals during acetone gas sensing. Meanwhile, the prepared α-Fe2O3 gas sensor exhibits excellent gas-sensing performance with high response value (Ra/Rg = 27), rapid response/recovery time (1 s/80 s) for 100 ppm acetone gas, and broad response range (5 - 900 ppm) at 183 °C. Strategies described herein could provide a promising approach to obtain gas-sensing materials with excellent performance and unveil the gas-sensing nature for other metal-oxide-based chemiresistors.
Collapse
|
75
|
Zhang J, Liu L, Yang Y, Huang Q, Li D, Zeng D. A review on two-dimensional materials for chemiresistive- and FET-type gas sensors. Phys Chem Chem Phys 2021; 23:15420-15439. [PMID: 34263272 DOI: 10.1039/d1cp01890f] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Two-dimensional (2D) materials have shown great potential for gas sensing applications due to their large specific surface areas and strong surface activities. In addition to the commonly reported chemiresistive-type gas sensors, field-effect transistor (FET)-type gas sensors have attracted increased attention due to their miniaturized size, low power consumption, and good compatibility with CMOS technology. In this review, we aim to discuss the recent developments in chemiresistive- and FET-type gas sensors based on 2D materials, including graphene, transition metal dichalcogenides, MXenes, black phosphorene, and other layered materials. Firstly, the device structure and the corresponding fabrication process of the two types of sensors are given, and then the advantages and disadvantages are also discussed. Secondly, the effects of intrinsic and extrinsic factors on the sensing performance of 2D material-based chemiresistive and FET-type gas sensors are also detailed. Subsequently, the current gas-sensing applications of 2D material-based chemiresistive- and FET-type gas sensors are systematically presented. Finally, the future prospects of 2D materials in chemiresistive- and FET-type gas sensing applications as well as the current existing problems are pointed out, which could be helpful for the development of 2D material-based gas sensors with better sensing performance to meet the requirements for practical application.
Collapse
Affiliation(s)
- Jian Zhang
- State Key Laboratory of Materials Processing and Die Mould Technology, Huazhong University of Science and Technology (HUST), No. 1037, Luoyu Road, Wuhan 430074, China. and Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
| | - Lei Liu
- State Key Laboratory of Materials Processing and Die Mould Technology, Huazhong University of Science and Technology (HUST), No. 1037, Luoyu Road, Wuhan 430074, China.
| | - Yan Yang
- State Key Laboratory of Materials Processing and Die Mould Technology, Huazhong University of Science and Technology (HUST), No. 1037, Luoyu Road, Wuhan 430074, China.
| | - Qingwu Huang
- State Key Laboratory of Materials Processing and Die Mould Technology, Huazhong University of Science and Technology (HUST), No. 1037, Luoyu Road, Wuhan 430074, China.
| | - Delong Li
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
| | - Dawen Zeng
- State Key Laboratory of Materials Processing and Die Mould Technology, Huazhong University of Science and Technology (HUST), No. 1037, Luoyu Road, Wuhan 430074, China.
| |
Collapse
|
76
|
Agrawal AV, Kumar N, Kumar M. Strategy and Future Prospects to Develop Room-Temperature-Recoverable NO 2 Gas Sensor Based on Two-Dimensional Molybdenum Disulfide. NANO-MICRO LETTERS 2021; 13:38. [PMID: 33425474 PMCID: PMC7780921 DOI: 10.1007/s40820-020-00558-3] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 10/29/2020] [Indexed: 05/12/2023]
Abstract
Nitrogen dioxide (NO2), a hazardous gas with acidic nature, is continuously being liberated in the atmosphere due to human activity. The NO2 sensors based on traditional materials have limitations of high-temperature requirements, slow recovery, and performance degradation under harsh environmental conditions. These limitations of traditional materials are forcing the scientific community to discover future alternative NO2 sensitive materials. Molybdenum disulfide (MoS2) has emerged as a potential candidate for developing next-generation NO2 gas sensors. MoS2 has a large surface area for NO2 molecules adsorption with controllable morphologies, facile integration with other materials and compatibility with internet of things (IoT) devices. The aim of this review is to provide a detailed overview of the fabrication of MoS2 chemiresistance sensors in terms of devices (resistor and transistor), layer thickness, morphology control, defect tailoring, heterostructure, metal nanoparticle doping, and through light illumination. Moreover, the experimental and theoretical aspects used in designing MoS2-based NO2 sensors are also discussed extensively. Finally, the review concludes the challenges and future perspectives to further enhance the gas-sensing performance of MoS2. Understanding and addressing these issues are expected to yield the development of highly reliable and industry standard chemiresistance NO2 gas sensors for environmental monitoring.
Collapse
Affiliation(s)
- Abhay V. Agrawal
- Functional and Renewable Energy Materials Laboratory, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001 India
| | - Naveen Kumar
- Functional and Renewable Energy Materials Laboratory, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001 India
| | - Mukesh Kumar
- Functional and Renewable Energy Materials Laboratory, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001 India
| |
Collapse
|
77
|
Trajcheva A, Politakos N, Pérez BT, Joseph Y, Blazevska Gilev J, Tomovska R. QCM nanocomposite gas sensors – Expanding the application of waterborne polymer composites based on graphene nanoribbon. POLYMER 2021. [DOI: 10.1016/j.polymer.2020.123335] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
|
78
|
A Compact 16 Channel Embedded System with High Dynamic Range Readout and Heater Management for Semiconducting Metal Oxide Gas Sensors. ELECTRONICS 2020. [DOI: 10.3390/electronics9111855] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The simultaneous operation of multiple different semiconducting metal oxide (MOX) gas sensors is demanding for the readout circuitry. The challenge results from the strongly varying signal intensities of the various sensor types to the target gas. While some sensors change their resistance only slightly, other types can react with a resistive change over a range of several decades. Therefore, a suitable readout circuit has to be able to capture all these resistive variations, requiring it to have a very large dynamic range. This work presents a compact embedded system that provides a full, high range input interface (readout and heater management) for MOX sensor operation. The system is modular and consists of a central mainboard that holds up to eight sensor-modules, each capable of supporting up to two MOX sensors, therefore supporting a total maximum of 16 different sensors. Its wide input range is archived using the resistance-to-time measurement method. The system is solely built with commercial off-the-shelf components and tested over a range spanning from 100 Ω to 5 GΩ (9.7 decades) with an average measurement error of 0.27% and a maximum error of 2.11%. The heater management uses a well-tested power-circuit and supports multiple modes of operation, hence enabling the system to be used in highly automated measurement applications. The experimental part of this work presents the results of an exemplary screening of 16 sensors, which was performed to evaluate the system’s performance.
Collapse
|
79
|
Gil-González N, Benito-Lopez F, Castaño E, Morant-Miñana MC. Imidazole-based ionogel as room temperature benzene and formaldehyde sensor. Mikrochim Acta 2020; 187:638. [PMID: 33146855 DOI: 10.1007/s00604-020-04625-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 10/28/2020] [Indexed: 11/26/2022]
Abstract
A room temperature benzene and formaldehyde gas sensor system with an ionogel as sensing material is presented. The sensing layer is fabricated employing poly(N-isopropylacrylamide) polymerized in the presence of 1-ethyl-3-methylimidazolium ethyl sulfate ionic liquid onto gold interdigitated electrodes. When the ionogel is exposed to increasing formaldehyde concentrations employing N2 as a carrier gas, a more stable response is observed in comparison to the bare ionic liquid, but no difference in sensitivity occurs. On the other hand, when air is used as carrier gas the sensitivity of the system towards formaldehyde is decreased by one order of magnitude. At room temperature, the proposed sensor exhibited in air higher sensitivities to benzene, at concentrations ranging between 4 and 20 ppm resulting, in a limit of detection of 47 ppb, which is below the standard permitted concentrations. The selectivity of the IL towards HCHO and C6H6 is demonstrated by the absence of response when another IL is employed. Humidity from the ambient air slightly affects the resistance of the system proving the protective role of the polymeric matrix. Furthermore, the gas sensor system showed fast response/recovery times considering the thickness of the material, suggesting that ionogel materials can be used as novel and highly efficient volatile organic compounds sensors operating at room temperature.Graphical abstract.
Collapse
Affiliation(s)
- Nerea Gil-González
- Ceit, Manuel Lardizabal 15, 20018, Donostia/San Sebastián, Spain
- Universidad de Navarra, Tecnun, Manuel Lardizabal 13, 20018, Donostia/San Sebastián, Spain
| | - F Benito-Lopez
- Analytical Microsystems & Materials for Lab-on-a-Chip (AMMa-LOAC) Group, Microfluidics Cluster UPV/EHU, Analytical Chemistry Department, University of the Basque Country UPV/EHU, Leioa, Spain
| | - E Castaño
- Ceit, Manuel Lardizabal 15, 20018, Donostia/San Sebastián, Spain
- Universidad de Navarra, Tecnun, Manuel Lardizabal 13, 20018, Donostia/San Sebastián, Spain
| | - Maria C Morant-Miñana
- Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510, Vitoria-Gasteiz, Spain.
| |
Collapse
|
80
|
Moon HG, Jung Y, Shin B, Song YG, Kim JH, Lee T, Lee S, Jun SC, Kaner RB, Kang C, Kim C. On-Chip Chemiresistive Sensor Array for On-Road NO x Monitoring with Quantification. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2002014. [PMID: 33240761 PMCID: PMC7675194 DOI: 10.1002/advs.202002014] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 07/10/2020] [Indexed: 05/03/2023]
Abstract
The adverse effects of air pollution on respiratory health make air quality monitoring with high spatial and temporal resolutions essential especially in cities. Despite considerable interest and efforts, the application of various types of sensors is considered immature owing to insufficient sensitivity and cross-interference under ambient conditions. Here, a fully integrated chemiresistive sensor array (CSA) with parts-per-trillion sensitivity is demonstrated with its application for on-road NO x monitoring. An analytical model is suggested to describe the kinetics of the sensor responses and quantify molecular binding affinities. Finally, the full characterization of the system is connected to implement on-road measurements on NO x vapor with quantification as its ultimate field application. The obtained results suggest that the CSA shows potential as an essential unit to realize an air-quality monitoring network with high spatial and temporal resolutions.
Collapse
Affiliation(s)
- Hi Gyu Moon
- National Center for Efficacy Evaluation of Respiratory Disease ProductKorea Institute of ToxicologyJeongeupJeollabuk‐do56212Republic of Korea
- Center for Electronic MaterialsKorea Institute of Science and Technology (KIST)Seoul02792Republic of Korea
- Department of Chemistry and BiochemistryUniversity of CaliforniaLos AngelesCA90095USA
| | - Youngmo Jung
- Sensor System Research CenterKorea Institute of Science and Technology (KIST)Seoul02792Republic of Korea
- Department of Material Science and EngineeringYonsei UniversitySeoul03722Republic of Korea
| | - Beomju Shin
- Sensor System Research CenterKorea Institute of Science and Technology (KIST)Seoul02792Republic of Korea
| | - Young Geun Song
- Center for Electronic MaterialsKorea Institute of Science and Technology (KIST)Seoul02792Republic of Korea
| | - Jae Hun Kim
- Sensor System Research CenterKorea Institute of Science and Technology (KIST)Seoul02792Republic of Korea
| | - Taikjin Lee
- Sensor System Research CenterKorea Institute of Science and Technology (KIST)Seoul02792Republic of Korea
| | - Seok Lee
- Sensor System Research CenterKorea Institute of Science and Technology (KIST)Seoul02792Republic of Korea
| | - Seong Chan Jun
- Department of Material Science and EngineeringYonsei UniversitySeoul03722Republic of Korea
| | - Richard B. Kaner
- Department of Chemistry and BiochemistryUniversity of CaliforniaLos AngelesCA90095USA
- Department of Materials Science and EngineeringUniversity of CaliforniaLos AngelesCA90095USA
| | - Chong‐Yun Kang
- Center for Electronic MaterialsKorea Institute of Science and Technology (KIST)Seoul02792Republic of Korea
- KU‐KIST Graduate School of Converging Science and TechnologyKorea UniversitySeoul02841Republic of Korea
| | - Chulki Kim
- Sensor System Research CenterKorea Institute of Science and Technology (KIST)Seoul02792Republic of Korea
| |
Collapse
|
81
|
Zhou T, Chen S, Wang X, Xie C, Zeng D. Catalytic Activation of Cobalt Doping Sites in ZIF-71-Coated ZnO Nanorod Arrays for Enhancing Gas-Sensing Performance to Acetone. ACS APPLIED MATERIALS & INTERFACES 2020; 12:48948-48956. [PMID: 32989984 DOI: 10.1021/acsami.0c13089] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Developing acetone gas sensors with high sensitivity is crucially important for many applications including nonevasive diagnosis of diabetes. In the present work, cobalt doping is used to catalyze acetone gas-sensing reactions and hence to promote the sensitivity of acetone gas sensors. In order to achieve this, ZIF-71 metal-organic framework (MOF) is synthesized onto ZnO nanorod arrays with various concentrations of Co doping to form composite ZnO@ZIF-71(Co) sensors, which are then evaluated as sensing materials for acetone detection. Such sensors are shown to be sensitive to a trace amount of acetone (50 ppb) and have a massively enhanced response of about 100 times that for the undoped sensor at an optimal Co/Zn ratio and operating temperature. Fourier-transform infrared spectroscopy and temperature-programmed desorption with density functional theory calculations are also made to assist in elucidating the catalytic gas-sensing mechanism for the Co-doped composite sensors ZnO@ZIF-71(Co). It demonstrated that the introduced Co site in ZIF-71(Co) can activate oxygen catalytically and increase active oxygen released to the ZnO surface. Meanwhile, the Co sites also promote the decomposition of acetone. These two steps together affect the catalytic oxidation of gases and finally enhance the sensitivity. This work introduces the catalytic effect of the MOF into the gas-sensing mechanism and provides an idea for broadening the application of MOF catalysis.
Collapse
Affiliation(s)
- Tingting Zhou
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Shiyu Chen
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xiaoxia Wang
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Changsheng Xie
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Dawen Zeng
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| |
Collapse
|
82
|
Jeong H, Seebauer EG, Ertekin E. Fermi level dependence of gas-solid oxygen defect exchange mechanism on TiO 2 (110) by first-principles calculations. J Chem Phys 2020; 153:124710. [PMID: 33003753 DOI: 10.1063/5.0023180] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
In the same way that gases interact with oxide semiconductor surfaces from above, point defects interact from below. Previous experiments have described defect-surface reactions for TiO2(110), but an atomistic picture of the mechanism remains unknown. The present work employs computations by density functional theory of the thermodynamic stabilities of metastable states to elucidate possible reaction pathways for oxygen interstitial atoms at TiO2(110). The simulations uncover unexpected metastable states including dumbbell and split configurations in the surface plane that resemble analogous interstitial species in the deep bulk. Comparison of the energy landscapes involving neutral (unionized) and charged intermediates shows that the Fermi energy EF exerts a strong influence on the identity of the most likely pathway. The largest elementary-step thermodynamic barrier for interstitial injection trends mostly downward by 2.1 eV as EF increases between the valence and conduction band edges, while that for annihilation trends upward by 2.1 eV. Several charged intermediates become stabilized for most values of EF upon receiving conduction band electrons from TiO2, and the behavior of these species governs much of the overall energy landscape.
Collapse
Affiliation(s)
- Heonjae Jeong
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Edmund G Seebauer
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Elif Ertekin
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| |
Collapse
|
83
|
Zhao Z, Yang H, Wei Z, Xue Y, Sun Y, Zhang W, Li P, Gong W, Zhuiykov S, Hu J. NH 3 Sensor Based on 3D Hierarchical Flower-Shaped n-ZnO/ p-NiO Heterostructures Yields Outstanding Sensing Capabilities at ppb Level. SENSORS 2020; 20:s20174754. [PMID: 32842675 PMCID: PMC7506851 DOI: 10.3390/s20174754] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 08/17/2020] [Accepted: 08/20/2020] [Indexed: 11/16/2022]
Abstract
Hierarchical three-dimensional (3D) flower-like n-ZnO/p-NiO heterostructures with various ZnxNiy molar ratios (Zn5Ni1, Zn2Ni1, Zn1Ni1, Zn1Ni2 and Zn1Ni5) were synthesized by a facile hydrothermal method. Their crystal phase, surface morphology, elemental composition and chemical state were comprehensively investigated by XRD, SEM, EDS, TEM and XPS techniques. Gas sensing measurements were conducted on all the as-developed ZnxNiy-based sensors toward ammonia (NH3) detection under various working temperatures from 160 to 340 °C. In particular, the as-prepared Zn1Ni2 sensor exhibited superior NH3 sensing performance under optimum working temperature (280 °C) including high response (25 toward 100 ppm), fast response/recovery time (16 s/7 s), low detection limit (50 ppb), good selectivity and long-term stability. The enhanced NH3 sensing capabilities of Zn1Ni2 sensor could be attributed to both the specific hierarchical structure which facilitates the adsorption of NH3 molecules and produces much more contact sites, and the improved gas response characteristics of p-n heterojunctions. The obtained results clear demonstrated that the optimum n-ZnO/p-NiO heterostructure is indeed very promising sensing material toward NH3 detection for different applications.
Collapse
Affiliation(s)
- Zhenting Zhao
- Guangdong Provincial Key Laboratory of Electronic Functional Materials and Devices, Huizhou University, Huizhou 516001, Guangdong, China; (Z.Z.); (W.G.)
- Center of Nano Energy and Devices, College of Information and computer, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China; (H.Y.); (Y.X.); (Y.S.); (W.Z.); (P.L.)
| | - Haoyue Yang
- Center of Nano Energy and Devices, College of Information and computer, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China; (H.Y.); (Y.X.); (Y.S.); (W.Z.); (P.L.)
| | - Zihan Wei
- Department of Solid State Science, Faculty of Science, Ghent University Global Campus, 119 Songdomunhwa-ro, Yeonsu-gu, Incheon 21985, Korea; (Z.W.); (S.Z.)
| | - Yan Xue
- Center of Nano Energy and Devices, College of Information and computer, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China; (H.Y.); (Y.X.); (Y.S.); (W.Z.); (P.L.)
| | - Yongjiao Sun
- Center of Nano Energy and Devices, College of Information and computer, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China; (H.Y.); (Y.X.); (Y.S.); (W.Z.); (P.L.)
| | - Wenlei Zhang
- Center of Nano Energy and Devices, College of Information and computer, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China; (H.Y.); (Y.X.); (Y.S.); (W.Z.); (P.L.)
| | - Pengwei Li
- Center of Nano Energy and Devices, College of Information and computer, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China; (H.Y.); (Y.X.); (Y.S.); (W.Z.); (P.L.)
| | - Weiping Gong
- Guangdong Provincial Key Laboratory of Electronic Functional Materials and Devices, Huizhou University, Huizhou 516001, Guangdong, China; (Z.Z.); (W.G.)
| | - Serge Zhuiykov
- Department of Solid State Science, Faculty of Science, Ghent University Global Campus, 119 Songdomunhwa-ro, Yeonsu-gu, Incheon 21985, Korea; (Z.W.); (S.Z.)
| | - Jie Hu
- Center of Nano Energy and Devices, College of Information and computer, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China; (H.Y.); (Y.X.); (Y.S.); (W.Z.); (P.L.)
- Correspondence:
| |
Collapse
|
84
|
Zhang L, Li Z, Liu J, Peng Z, Zhou J, Zhang H, Li Y. Optoelectronic Gas Sensor Based on Few-Layered InSe Nanosheets for NO2 Detection with Ultrahigh Antihumidity Ability. Anal Chem 2020; 92:11277-11287. [DOI: 10.1021/acs.analchem.0c01941] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Lu Zhang
- School of Science, Harbin Institute of Technology, Shenzhen 518055, China
| | - Zhongjun Li
- Collaborative Innovation Center for Optoelectronic Science & Technology, International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Jiang Liu
- School of Science, Harbin Institute of Technology, Shenzhen 518055, China
| | - Zhengchun Peng
- Collaborative Innovation Center for Optoelectronic Science & Technology, International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Jia Zhou
- School of Science, Harbin Institute of Technology, Shenzhen 518055, China
| | - Han Zhang
- Collaborative Innovation Center for Optoelectronic Science & Technology, International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Yingchun Li
- School of Science, Harbin Institute of Technology, Shenzhen 518055, China
| |
Collapse
|
85
|
Diagnosis of Varroosis Based on Bee Brood Samples Testing with Use of Semiconductor Gas Sensors. SENSORS 2020; 20:s20144014. [PMID: 32707688 PMCID: PMC7411709 DOI: 10.3390/s20144014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/02/2020] [Accepted: 07/17/2020] [Indexed: 01/02/2023]
Abstract
Varroosis is a dangerous and difficult to diagnose disease decimating bee colonies. The studies conducted sought answers on whether the electronic nose could become an effective tool for the efficient detection of this disease by examining sealed brood samples. The prototype of a multi-sensor recorder of gaseous sensor signals with a matrix of six semiconductor gas sensors TGS 823, TGS 826, TGS 832, TGS 2600, TGS 2602, and TGS 2603 from FIGARO was tested in this area. There were 42 objects belonging to 3 classes tested: 1st class—empty chamber (13 objects), 2nd class—fragments of combs containing brood sick with varroosis (19 objects), and 3rd class—fragments of combs containing healthy sealed brood (10 objects). The examination of a single object lasted 20 min, consisting of the exposure phase (10 min) and the sensor regeneration phase (10 min). The k-th nearest neighbors algorithm (kNN)—with default settings in RSES tool—was successfully used as the basic classifier. The basis of the analysis was the sensor reading value in 270 s with baseline correction. The multi-sensor MCA-8 gas sensor signal recorder has proved to be an effective tool in distinguishing between brood suffering from varroosis and healthy brood. The five-time cross-validation 2 test (5 × CV2 test) showed a global accuracy of 0.832 and a balanced accuracy of 0.834. Positive rate of the sick brood class was 0.92. In order to check the overall effectiveness of baseline correction in the examined context, we have carried out additional series of experiments—in multiple Monte Carlo Cross Validation model—using a set of classifiers with different metrics. We have tested a few variants of the kNN method, the Naïve Bayes classifier, and the weighted voting classifier. We have verified with statistical tests the thesis that the baseline correction significantly improves the level of classification. We also confirmed that it is enough to use the TGS2603 sensor in the examined context.
Collapse
|
86
|
Abstract
Recently, perovskite-based nanomaterials are utilized in diverse sustainable applications. Their unique structural characteristics allow researchers to explore functionalities towards diverse directions, such as solar cells, light emitting devices, transistors, sensors, etc. Many perovskite nanomaterial-based devices have been demonstrated with extraordinary sensing performance to various chemical and biological species in both solid and solution states. In particular, perovskite nanomaterials are capable of detecting small molecules such as O2, NO2, CO2, etc. This review elaborates the sensing applications of those perovskite materials with diverse cations, dopants and composites. Moreover, the underlying mechanisms and electron transport properties, which are important for understanding those sensor performances, will be discussed. Their synthetic tactics, structural information, modifications and real time sensing applications are provided to promote such perovskite nanomaterials-based molecular designs. Lastly, we summarize the perspectives and provide feasible guidelines for future developing of novel perovskite nanostructure-based chemo- and biosensors with real time demonstration.
Collapse
|
87
|
A Review of Methane Gas Detection Sensors: Recent Developments and Future Perspectives. INVENTIONS 2020. [DOI: 10.3390/inventions5030028] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Methane, the primary component of natural gas, is a significant contributor to global warming and climate change. It is a harmful greenhouse gas with an impact 28 times greater than carbon dioxide over a 100-year period. Preventing methane leakage from transmission pipelines and other oil and gas production activities is a possible solution to reduce methane emissions. In order to detect and resolve methane leaks, reliable and cost-effective sensors need to be researched and developed. This paper provides a comprehensive review of different types of methane detection sensors, including optical sensors, calorimetric sensors, pyroelectric sensors, semiconducting oxide sensors, and electrochemical sensors. The discussed material includes the definitions, mechanisms and recent developments of these sensors. A comparison between different methods, highlighting the advantages and disadvantages of each, is also presented to help address future research needs.
Collapse
|
88
|
Chaurasiya R, Dixit A. Ultrahigh sensitivity with excellent recovery time for NH 3 and NO 2 in pristine and defect mediated Janus WSSe monolayers. Phys Chem Chem Phys 2020; 22:13903-13922. [PMID: 32542298 DOI: 10.1039/d0cp02063j] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We demonstrated ultrahigh sensitivity with excellent recovery time for H2S, NH3, NO2, and NO molecules on the sulfur and selenium surfaces of Janus WSSe monolayers using density functional theory. The selenium surface of the WSSe monolayer showed strong adsorption in comparison to the sulfur surface. The respective adsorption energies for H2S, NH3, NO2 and NO molecules are -0.193 eV, -0.220 eV, -0.276 eV, and -0.189 eV. These values are higher than the experimentally reported values for ultrahigh sensitivity gas sensors based on MoS2, MoSe2, WS2, and WSe2 monolayers. The computed adsorption energy and recovery time suggest that the desorption of gas molecules can be achieved easily in the WSSe monolayer. Further, the probable vacancy defects SV, SeV, and (S/Se)V and antisite defects SSe, and SeS are considered to understand their impact on the adsorption properties with respect to the pristine WSSe monolayer. We observed that the defect-including WSSe monolayers showed enhanced adsorption energy with fast recovery, which makes the Janus WSSe monolayer an excellent material for nanoscale gas sensors with ultrahigh sensitivity and excellent recovery time.
Collapse
Affiliation(s)
- Rajneesh Chaurasiya
- Department of Physics and Center for Solar Energy, Indian Institute of Technology, Jodhpur, 342037, India.
| | - Ambesh Dixit
- Department of Physics and Center for Solar Energy, Indian Institute of Technology, Jodhpur, 342037, India.
| |
Collapse
|
89
|
Yang J, Cheng F, Zhu Z, Feng J, Xue M, Meng Z, Qiu L. An enhanced gas sensor based on SiO 2@mesoporous MCM-41 core-shell nanocomposites for SO 2 visual detection. Analyst 2020; 145:4352-4357. [PMID: 32501460 DOI: 10.1039/d0an00621a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A colorimetric sulfur dioxide (SO2) gas sensor based on a core-shell composite was developed. The composite was fabricated with a silicon dioxide core and a mesoporous MCM-41 shell (SiO2@MCM-41), and further loaded with a mixture of zinc chloride (ZnCl2), sodium nitroprusside (SNP) and hexamine as an SO2 indicator. The sensing properties of SiO2@MCM-41 toward SO2 were measured in solid powder, discs and a gas detection tube (GDT), respectively. Each of these sensing configurations showed a distinct color change from pale yellow to red, which indicates good potential for naked-eye detection of SO2. The limit of detection (LOD) is 2 ppm for SiO2@MCM-41 discs, which indicates high sensitivity to SO2. The performance of GDT suggested a linear relationship between the SO2 concentration and the response length of the red portions in a range of 100-1000 ppm. This work shows promising potential of SiO2@MCM-41 as an easy, effective and rapid response sensing material for the in situ detection of SO2.
Collapse
Affiliation(s)
- Ji Yang
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology, Beijing 100081, PR China.
| | | | | | | | | | | | | |
Collapse
|
90
|
Szczurek A, Maciejewska M, Bąk B, Wilk J, Wilde J, Siuda M. Detecting varroosis using a gas sensor system as a way to face the environmental threat. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 722:137866. [PMID: 32197164 DOI: 10.1016/j.scitotenv.2020.137866] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 02/21/2020] [Accepted: 03/10/2020] [Indexed: 06/10/2023]
Abstract
Colony Collapse Disorder (CCD) is an environmental threat on a global scale due to the irreplaceable role of bees in crop pollination. Varroa destructor (V.d.), a parasite that attacks honeybee colonies, is one of the primary causes of honey bee population decline and the most serious threat to the beekeeping sector. This work demonstrates the possibility of quantitatively determining bee colony infestation by V.d. using gas sensing. The results are based on analysing the experimental data acquired for eighteen bee colonies in field conditions. Their infestation rate was in the 0 to 24.76% range. The experimental data consisted of measurements of beehive air with a semiconductor gas sensor array and the results of bee colony V.d. infestation assessment using a flotation method. The two kinds of data were collected in parallel. Partial Least Square regression was applied to identify the relationship between the highly multivariate measurement data provided by the gas sensor array and the V.d. infestation rate. The quality of the developed quantitative models was very high, as demonstrated by the coefficient of determination exceeding R2 = 0.99. Moreover, the prediction error was <0.6% for V.d. infestation rate predictions based on the measurement data that was unknown to the model. The presented work has considerable novelty. To our knowledge, the ability to determine the V.d. infestation rate of bee colony quantitatively based on beehive air measurements using a semiconductor gas sensor array has not been previously demonstrated.
Collapse
Affiliation(s)
- Andrzej Szczurek
- Faculty of Environmental Engineering, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Monika Maciejewska
- Faculty of Environmental Engineering, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland.
| | - Beata Bąk
- Apiculture Department, Warmia and Mazury University in Olsztyn, Sloneczna 48, 10-957 Olsztyn, Poland
| | - Jakub Wilk
- Apiculture Department, Warmia and Mazury University in Olsztyn, Sloneczna 48, 10-957 Olsztyn, Poland
| | - Jerzy Wilde
- Apiculture Department, Warmia and Mazury University in Olsztyn, Sloneczna 48, 10-957 Olsztyn, Poland
| | - Maciej Siuda
- Apiculture Department, Warmia and Mazury University in Olsztyn, Sloneczna 48, 10-957 Olsztyn, Poland
| |
Collapse
|
91
|
Cobalt-doped ZnO nanoparticles derived from zeolite imidazole frameworks: Synthesis, characterization, and application for the detection of an exhaled diabetes biomarker. J Colloid Interface Sci 2020; 569:358-365. [DOI: 10.1016/j.jcis.2020.02.081] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 02/14/2020] [Accepted: 02/19/2020] [Indexed: 12/23/2022]
|
92
|
Nadargi D, Tamboli MS, Patil SS, Dateer RB, Mulla IS, Choi H, Suryavanshi SS. Microwave-Epoxide-Assisted Hydrothermal Synthesis of the CuO/ZnO Heterojunction: a Highly Versatile Route to Develop H 2S Gas Sensors. ACS OMEGA 2020; 5:8587-8595. [PMID: 32337421 PMCID: PMC7178332 DOI: 10.1021/acsomega.9b04475] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Accepted: 02/27/2020] [Indexed: 06/11/2023]
Abstract
A robust synthesis approach to develop CuO/ZnO nanocomposites using microwave-epoxide-assisted hydrothermal synthesis and their proficiency toward H2S gas-sensing application are reported. The low-cost metal salts (Cu and Zn) as precursors in aqueous media and epoxide (propylene oxide) as a proton scavenger/gelation agent are used for the formation of mixed metal hydroxides. The obtained sol was treated using the microwave hydrothermal process to yield the high-surface area (34.71 m2/g) CuO/ZnO nanocomposite. The developed nanocomposites (1.25-10 mol % Cu doping) showcase hexagonal ZnO and monoclinic CuO structures, with an average crystallite size in the range of 18-29 nm wrt Cu doping in the ZnO matrix. The optimized nanocomposite (2.5 mol % Cu doping) showed a lowest crystallite size of 21.64 nm, which reduced further to 18.06 nm upon graphene oxide addition. Morphological analyses (scanning electron microscopy and transmission electron microscopy) exhibited rounded grains along with copious channels typical for sol-gel-based materials . Elemental mapping displayed the good dispersion of Cu in the ZnO matrix. When these materials are employed as a gas sensor, they demonstrated high sensitivity and selectivity toward H2S gas in comparison with the reducing gases and volatile organic compounds under investigation. The systematic doping of Cu in the ZnO matrix exhibited an improved response from 76.66 to 94.28%, with reduction in operating temperature from 300 to 250 °C. The 2.5 mol % doped Cu in ZnO was found to impart a response of 23 s for 25 ppm of H2S. Gas-sensing properties are described using an interplay of epoxide-assisted sol-gel chemistry and structural and morphological properties of the developed material.
Collapse
Affiliation(s)
- Digambar
Y. Nadargi
- School
of Physical Sciences, PAH Solapur University, Solapur 413255, Maharashtra, India
| | - Mohaseen S. Tamboli
- Department
of Chemistry and Research Institute for Convergence of Basic Sciences, Hanyang University, Seoul 04763, Republic
of Korea
| | - Santosh S. Patil
- Department
of Chemistry, Pohang University of Science
and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Ramesh B. Dateer
- Centre
for Nano and Material Sciences, JAIN (Deemed-to-be-University), Jain Global Campus, Bangalore, Karnataka 562112, India
| | - Imtiaz S. Mulla
- Former
Emeritus Scientist (CSIR), Centre for Materials
for Electronics Technology, Pune 411008, India
| | - Hyosung Choi
- Department
of Chemistry and Research Institute for Convergence of Basic Sciences, Hanyang University, Seoul 04763, Republic
of Korea
| | - Sharad S. Suryavanshi
- School
of Physical Sciences, PAH Solapur University, Solapur 413255, Maharashtra, India
| |
Collapse
|
93
|
GLAD Magnetron Sputtered Ultra-Thin Copper Oxide Films for Gas-Sensing Application. COATINGS 2020. [DOI: 10.3390/coatings10040378] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Copper oxide (CuO) ultra-thin films were obtained using magnetron sputtering technology with glancing angle deposition technique (GLAD) in a reactive mode by sputtering copper target in pure argon. The substrate tilt angle varied from 45 to 85° and 0°, and the sample rotation at a speed of 20 rpm was stabilized by the GLAD manipulator. After deposition, the films were annealed at 400 °C/4 h in air. The CuO ultra-thin film structure, morphology, and optical properties were assessed by X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), X-ray reflectivity (XRR), and optical spectroscopy. The thickness of the films was measured post-process using a profilometer. The obtained copper oxide structures were also investigated as gas-sensitive materials after exposure to acetone in the sub-ppm range. After deposition, gas-sensing measurements were performed at 300, 350, and 400 °C and 50% relative humidity (RH) level. We found that the sensitivity of the device is related to the thickness of CuO thin films, whereas the best results are obtained with an 8 nm thick sample.
Collapse
|
94
|
Zeolitic imidazolate frameworks for use in electrochemical and optical chemical sensing and biosensing: a review. Mikrochim Acta 2020; 187:234. [PMID: 32180011 DOI: 10.1007/s00604-020-4173-3] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 02/18/2020] [Indexed: 12/27/2022]
Abstract
This review (with 145 refs.) summarizes the progress that has been made in the use of zeolitic imidazolate frameworks in chemical sensing and biosensing. Zeolitic imidazolate frameworks (ZIFs) are a type of porous material with zeolite topological structure that combine the advantages of zeolite and traditional metal-organic frameworks. Owing to the structural flexibility of ZIFs, their pore sizes and surface functionalization can be reasonably designed. Following an introduction into the field of metal-organic frameworks and the zeolitic imidazolate framework (ZIF) subclass, a first large section covers the various kinds and properties of ZIFs. The next large section covers electrochemical sensors and assays (with subsections on methods for gases, electrochemiluminescence, electrochemical biomolecules). This is followed by main sections on ZIF-based colorimetric and luminescent sensors, with subsections on sensors for metal ions and anions, for gases, and for organic biomolecules. The last section covers SERS-based assays. Several tables are presented that give an overview on the wealth of methods and materials. A concluding section summarizes the current status, addresses current challenges, and gives an outlook on potential future trends. Graphical abstract In recent years, ZIFs and their composites have been widely used as probes in chemical sensing, and these probes have shown great advantages over other materials. This review describes the current progress on ZIFs toward electrochemical, luminescence, colorimetric, and SERS-based sensing applications, highlighting the different strategies for designing ZIFs and their composites and potential challenges in this field.
Collapse
|
95
|
Nosheen F, Wasfi N, Aslam S, Anwar T, Hussain S, Hussain N, Shah SN, Shaheen N, Ashraf A, Zhu Y, Wang H, Ma J, Zhang Z, Hu W. Ultrathin Pd-based nanosheets: syntheses, properties and applications. NANOSCALE 2020; 12:4219-4237. [PMID: 32026907 DOI: 10.1039/c9nr09557h] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Two-dimensional (2D) noble metal-based nanosheets (NSs) have received considerable interest in recent years due to their unique properties and widespread applications. Pd-based NSs, as a typical member of 2D noble metal-based NSs, have been most extensively studied. In this review, we first summarize the research progress on the synthesis of Pd-based NSs, including pure Pd NSs, Pd-based alloy NSs, Pd-based core-shell NSs and Pd-based hybrid NSs. The synthetic strategy and growth mechanism are systematically discussed. Then their properties and applications in catalysis, biotherapy, gas sensing and so on are introduced in detail. Finally, the challenges and opportunities towards the rational design and controlled synthesis of Pd-based NSs are proposed.
Collapse
Affiliation(s)
- Farhat Nosheen
- Department of Chemistry, Division of Science & Technology, University of Education, Lahore, Pakistan.
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
96
|
Zhou Q, Liu L, Liu Q, Wang Z, Gao C, Liu Y, Ye H. Highly Selective Adsorption on SiSe Monolayer and Effect of Strain Engineering: A DFT Study. SENSORS (BASEL, SWITZERLAND) 2020; 20:E977. [PMID: 32059398 PMCID: PMC7070421 DOI: 10.3390/s20040977] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 02/04/2020] [Accepted: 02/05/2020] [Indexed: 11/18/2022]
Abstract
The adsorption types of ten kinds of gas molecules (O2, NH3, SO2, CH4, NO, H2S, H2, CO, CO2, and NO2) on the surface of SiSe monolayer are analyzed by the density-functional theory (DFT) calculation based on adsorption energy, charge density difference (CDD), electron localization function (ELF), and band structure. It shows high selective adsorption on SiSe monolayer that some gas molecules like SO2, NO, and NO2 are chemically adsorbed, while the NH3 molecule is physically adsorbed, the rest of the molecules are weakly adsorbed. Moreover, stress is applied to the SiSe monolayer to improve the adsorption strength of NH3. It has a tendency of increment with the increase of compressive stress. The strongest physical adsorption energy (-0.426 eV) is obtained when 2% compressive stress is added to the substrate in zigzag direction. The simple desorption is realized by decreasing the stress. Furthermore, based on the similar adsorption energy between SO2 and NH3 molecules, the co-adsorption of these two gases are studied. The results show that SO2 will promote the detection of NH3 in the case of SO2-NH3/SiSe configuration. Therefore, SiSe monolayer is a good candidate for NH3 sensing with strain engineering.
Collapse
Affiliation(s)
- Quan Zhou
- Key Laboratory of Optoelectronic Technology & Systems, Education Ministry of China, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China; (Q.Z.); (L.L.); (Q.L.); (Z.W.); (C.G.); (Y.L.)
| | - Lian Liu
- Key Laboratory of Optoelectronic Technology & Systems, Education Ministry of China, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China; (Q.Z.); (L.L.); (Q.L.); (Z.W.); (C.G.); (Y.L.)
| | - Qipeng Liu
- Key Laboratory of Optoelectronic Technology & Systems, Education Ministry of China, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China; (Q.Z.); (L.L.); (Q.L.); (Z.W.); (C.G.); (Y.L.)
| | - Zeping Wang
- Key Laboratory of Optoelectronic Technology & Systems, Education Ministry of China, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China; (Q.Z.); (L.L.); (Q.L.); (Z.W.); (C.G.); (Y.L.)
| | - Chenshan Gao
- Key Laboratory of Optoelectronic Technology & Systems, Education Ministry of China, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China; (Q.Z.); (L.L.); (Q.L.); (Z.W.); (C.G.); (Y.L.)
| | - Yufei Liu
- Key Laboratory of Optoelectronic Technology & Systems, Education Ministry of China, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China; (Q.Z.); (L.L.); (Q.L.); (Z.W.); (C.G.); (Y.L.)
- Centre for Intelligent Sensing Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
| | - Huaiyu Ye
- School of Microelectronics, Southern University of Science and Technology, Shenzhen 518055, China
- Shenzhen Institute of Wide-Bandgap Semiconductors, No.1088, Xueyuan Rd., Xili, Nanshan District, Shenzhen 518055, Guangdong, China
| |
Collapse
|
97
|
Nanostructured tin oxide materials for the sub-ppm detection of indoor formaldehyde pollution. Talanta 2020; 208:120396. [DOI: 10.1016/j.talanta.2019.120396] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 09/20/2019] [Accepted: 09/26/2019] [Indexed: 01/23/2023]
|
98
|
Oosthuizen D, Korditis I, Swart H, Motaung D. Facile control of room temperature nitrogen dioxide gas selectivity induced by copper oxide nanoplatelets. J Colloid Interface Sci 2020; 560:755-768. [DOI: 10.1016/j.jcis.2019.10.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 09/21/2019] [Accepted: 10/10/2019] [Indexed: 10/25/2022]
|
99
|
Ramakrishnan V, Nair KG, Dhakshinamoorthy J, Ravi KR, Pullithadathil B. Porous, n–p type ultra-long, ZnO@Bi2O3 heterojunction nanorods - based NO2 gas sensor: new insights towards charge transport characteristics. Phys Chem Chem Phys 2020; 22:7524-7536. [DOI: 10.1039/d0cp00567c] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Porous n–p type ultra-long ZnO@Bi2O3 heterojunction nanorods have been synthesized through a solvothermal method and their complex charge transport characteristics pertaining to NO2 gas sensing properties have been investigated.
Collapse
Affiliation(s)
| | - Keerthi G. Nair
- Nanosensor Laboratory
- PSG Institute of Advanced Studies
- Coimbatore – 641 004
- India
| | | | - K. R. Ravi
- Department of Metallurgy and Materials Engineering
- Indian Institute of Technology Jodhpur
- India
| | - Biji Pullithadathil
- Nanosensor Laboratory
- PSG Institute of Advanced Studies
- Coimbatore – 641 004
- India
| |
Collapse
|
100
|
Lu H, Wright DS, Pike SD. The use of mixed-metal single source precursors for the synthesis of complex metal oxides. Chem Commun (Camb) 2020; 56:854-871. [DOI: 10.1039/c9cc06258k] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
This Feature Article highlights the use of mixed-metal single source precursors to directly access useful complex metal oxide materials.
Collapse
Affiliation(s)
- Haijiao Lu
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- China
- Department of Chemistry
| | | | - Sebastian D. Pike
- Department of Chemistry
- University of Cambridge
- Cambridge
- UK
- Department of Chemistry
| |
Collapse
|