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Zhang Y, Liu J, Rong C, Wang D, Li W, Gao Z, Chen Y. Current Advances of CO Sensing Based on Low Dimensional Materials. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:18821-18836. [PMID: 39196291 DOI: 10.1021/acs.langmuir.4c01861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/29/2024]
Abstract
Carbon monoxide (CO) is a harmful gas with significant impacts on human health and the environment. Its timely detection, especially in the event of thermal runaway in automotive lithium batteries, is crucial to prevent casualties. This paper reviews the progress in the development of efficient, sensitive, and reliable CO sensors, focusing on electrochemical, optical, and resistive sensing materials. Low-dimensional materials have a large specific surface area, providing an abundant number of active sites, which has drawn extensive attention from researchers. According to the different sensor signals, we categorized these sensors into electrical and optical signal sensors. We hope that by systematically introducing the sensing mechanism and sensing performance of these two kinds of sensors, appropriate CO sensors can be developed in different application scenarios so as to realize early warning and monitoring to the maximum extent, reduce industrial losses, and ensure the life and health of personnel.
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Affiliation(s)
- Yundi Zhang
- College of Automotive Engineering, Jilin University, Changchun 130025, China
| | - Jie Liu
- College of Automotive Engineering, Jilin University, Changchun 130025, China
| | - Changru Rong
- General Research and Development Institute, China FAW Corporation Limited, Changchun 130013, China
| | - Deping Wang
- General Research and Development Institute, China FAW Corporation Limited, Changchun 130013, China
| | - Weifeng Li
- National Key Laboratory of Automotive Chassis Integration and Bionics, Jilin University, Changchun 130025, China
| | - Zhenhai Gao
- College of Automotive Engineering, Jilin University, Changchun 130025, China
| | - Yupeng Chen
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing 100190, China
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Liu H, Liu Q, Feng Y, Li D, Xu D, Tang P. Facile preparation of Au-loaded mesoporous In 2O 3 nanoparticles with improved ethanol sensing performance. Dalton Trans 2023; 53:354-363. [PMID: 38050870 DOI: 10.1039/d3dt02343e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
The in situ monitoring of toxic volatile organic compound gases using metal oxide-based gas sensors is still challenging. Herein, mesoporous In2O3 nanoparticles, assembled using smaller nanoparticles, were synthesized via a facile solvothermal method and used to load Au nanoparticles to prepare mesoporous Au/In2O3 for ethanol detection. The obtained In2O3 and Au/In2O3 were meticulously analysed by XRD, SEM, BET, TEM and XPS techniques. It was revealed that Au nanoparticles were uniformly distributed on mesoporous In2O3 nanoparticles. Notably, the obtained mesoporous 1% Au/In2O3 is highly sensitive to ethanol gas at an optimal working temperature of 180 °C, showing a response of 55 to 50 ppm of ethanol, which is considerably higher compared to that of In2O3 nanoparticles. The significantly enhanced sensitivity results from the electronic and chemical sensitization effects of Au nanoparticles. Moreover, the mesoporous Au/In2O3 nanoparticles also showed eminent selectivity, short response/recovery time, low detection limit, good linear relationship, superb repeatability, and wonderful long-term stability, suggesting that Au/In2O3 nanoparticles have great potential application for in situ monitoring of ethanol gas.
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Affiliation(s)
- Huan Liu
- State Key Laboratory of Chemical Resource Engineering, and Beijing Engineering Center for Hierarchical Catalysts, Beijing University of Chemical Technology, Beijing 100029, P.R. China.
| | - Qian Liu
- State Key Laboratory of Chemical Resource Engineering, and Beijing Engineering Center for Hierarchical Catalysts, Beijing University of Chemical Technology, Beijing 100029, P.R. China.
| | - Yongjun Feng
- State Key Laboratory of Chemical Resource Engineering, and Beijing Engineering Center for Hierarchical Catalysts, Beijing University of Chemical Technology, Beijing 100029, P.R. China.
| | - Dianqing Li
- State Key Laboratory of Chemical Resource Engineering, and Beijing Engineering Center for Hierarchical Catalysts, Beijing University of Chemical Technology, Beijing 100029, P.R. China.
| | - Dongmei Xu
- Chongqing (Yu) Microelectronics Research Institute Co., Ltd, Chongqing, 400030, P.R. China.
| | - Pinggui Tang
- State Key Laboratory of Chemical Resource Engineering, and Beijing Engineering Center for Hierarchical Catalysts, Beijing University of Chemical Technology, Beijing 100029, P.R. China.
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Dutta T, Noushin T, Tabassum S, Mishra SK. Road Map of Semiconductor Metal-Oxide-Based Sensors: A Review. SENSORS (BASEL, SWITZERLAND) 2023; 23:6849. [PMID: 37571634 PMCID: PMC10422562 DOI: 10.3390/s23156849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 06/22/2023] [Accepted: 07/19/2023] [Indexed: 08/13/2023]
Abstract
Identifying disease biomarkers and detecting hazardous, explosive, flammable, and polluting gases and chemicals with extremely sensitive and selective sensor devices remains a challenging and time-consuming research challenge. Due to their exceptional characteristics, semiconducting metal oxides (SMOxs) have received a lot of attention in terms of the development of various types of sensors in recent years. The key performance indicators of SMOx-based sensors are their sensitivity, selectivity, recovery time, and steady response over time. SMOx-based sensors are discussed in this review based on their different properties. Surface properties of the functional material, such as its (nano)structure, morphology, and crystallinity, greatly influence sensor performance. A few examples of the complicated and poorly understood processes involved in SMOx sensing systems are adsorption and chemisorption, charge transfers, and oxygen migration. The future prospects of SMOx-based gas sensors, chemical sensors, and biological sensors are also discussed.
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Affiliation(s)
- Taposhree Dutta
- Department of Chemistry, IIEST Shibpur, Howrah 711103, West Bengal, India;
| | - Tanzila Noushin
- Department of Electrical and Computer Engineering, The University of Texas at Dallas, Richardson, TX 75080, USA;
| | - Shawana Tabassum
- Department of Electrical Engineering, The University of Texas at Tyler, Tyler, TX 75799, USA;
| | - Satyendra K. Mishra
- Danish Offshore Technology Center, Technical University of Denmark, 2800 Lyngby, Denmark
- SRCOM, Centre Technologic de Telecomunicacions de Catalunya, 08860 Castelldefels, Barcelona, Spain
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4
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Shinkai T, Masumoto K, Iwai M, Inomata Y, Kida T. Study on Sensing Mechanism of Volatile Organic Compounds Using Pt-Loaded ZnO Nanocrystals. SENSORS (BASEL, SWITZERLAND) 2022; 22:6277. [PMID: 36016037 PMCID: PMC9415036 DOI: 10.3390/s22166277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 07/20/2022] [Accepted: 08/11/2022] [Indexed: 06/15/2023]
Abstract
Understanding the surface chemistry of target gases on sensing materials is essential for designing high-performance gas sensors. Here, we report the effect of Pt-loading on the sensing of volatile organic compounds (VOCs) with ZnO gas sensors, demonstrated by diffuse reflection infrared Fourier transform (DRIFT) spectroscopy. Pt-loaded ZnO nanocrystals (NCs) of 13~22 nm are synthesized using the hot soap method. The synthesized powder is deposited on an alumina substrate by screen-printing to form a particulate gas sensing film. The 0.1 wt% Pt-loaded ZnO NC sensor shows the highest sensor response to acetone and ethanol at 350 °C, while the responses to CO and H2 are small and exhibit good selectivity to VOCs. The gas sensing mechanism of ethanol with Pt-ZnO NCs was studied by in situ DRIFT spectroscopy combined with online FT-IR gas analysis. The results show that ethanol reacts with small Pt-loaded ZnO to produce intermediate species such as acetaldehyde, acetate, and carbonate, which generates a high sensor response to ethanol in air.
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Affiliation(s)
- Takeshi Shinkai
- Department of Material Science and Applied Chemistry, Graduate School of Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan
| | - Keigo Masumoto
- Department of Material Science and Applied Chemistry, Graduate School of Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan
| | - Masaru Iwai
- Department of Material Science and Applied Chemistry, Graduate School of Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan
| | - Yusuke Inomata
- Division of Materials Science, Faculty of Advanced Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan
| | - Tetsuya Kida
- Division of Materials Science, Faculty of Advanced Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan
- Institute of Industrial Nanomaterials, Kumamoto University, Kumamoto 860-8555, Japan
- International Research Organization for Advanced Science and Technology (IROAST), Kumamoto University, Kumamoto 860-8555, Japan
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Yang R, Dong W, Ren Y, Xue Y, Cui H. Luminol functionalized tin dioxide nanoparticles with catalytic effect for sensitive detection of glucose and uric acid. Anal Chim Acta 2022; 1220:340070. [DOI: 10.1016/j.aca.2022.340070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 06/06/2022] [Accepted: 06/07/2022] [Indexed: 11/01/2022]
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6
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Liu B, Zhang L, Luo Y, Gao L, Duan G. The Dehydrogenation of H-S Bond into Sulfur Species on Supported Pd Single Atoms Allows Highly Selective and Sensitive Hydrogen Sulfide Detection. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2105643. [PMID: 34716747 DOI: 10.1002/smll.202105643] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 09/27/2021] [Indexed: 06/13/2023]
Abstract
The supported metal catalysts on scaffolds usually reveal multiple active sites, resulting in the occurrence of side reaction and being detrimental to the achievement of highly consistent catalysis. Single atom catalysts (SACs), possessed with highly consistent single active sites, have great potentials for overcoming such issues. Herein, the authors used SACs to modulate kinetic process of gas sensitive reaction. The supported Pd SACs, established by a metal organic frameworks-templated approach, promoted greatly the detection capacity to hydrogen sulfide (H2 S) gas with a very high sensitivity and selectivity. Density functional theory calculations show that the supported Pd SACs not only increased the number of electrons transferring from H2 S molecules to Pd SACs, but strengthened surface affinity to H2 S. Moreover, the HS bonds of H2 S molecules absorbed on Pd atomic sites are more likely to be dehydrogenated directly into sulfur species. Significantly, quasi in situ XPS analysis confirmed the presence of sulfur species during H2 S detection process, which may be a major cause for such detection signal. Based on these results, a suitable sensing principle for H2 S gas driven by Pd SACs was put forward. This work will enrich catalytic electronics in chemiresistive gas sensing.
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Affiliation(s)
- Bo Liu
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Linjuan Zhang
- Key Laboratory of Interfacial Physics and Technology, Shanghai Institute of Applied Physics, Chinese Academy of Science, Shanghai, 201800, P. R. China
| | - Yuanyuan Luo
- Key Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Science, Hefei, 230031, P. R. China
| | - Lei Gao
- Key Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Science, Hefei, 230031, P. R. China
| | - Guotao Duan
- Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
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7
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SebtAhmadi S, Raissi B, Yaghmaee MS, Riahifar R, Rahimisheikh S. Effect of electrode pores on the performance of CO electrochemical gas sensor, experimental and modeling. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Nasriddinov A, Platonov V, Garshev A, Rumyantseva M. Low Temperature HCHO Detection by SnO 2/TiO 2@Au and SnO 2/TiO 2@Pt: Understanding by In-Situ DRIFT Spectroscopy. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2049. [PMID: 34443880 PMCID: PMC8398349 DOI: 10.3390/nano11082049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 08/06/2021] [Accepted: 08/09/2021] [Indexed: 12/31/2022]
Abstract
In this work we analyze the effectiveness of decoration of nanocrystalline SnO2/TiO2 composites with gold nanoparticles (Au NPs) and platinum nanoparticles (Pt NPs) in enhancing gas sensor properties in low-temperature HCHO detection. Nanocrystalline SnO2/TiO2 composites were synthesized by a chemical precipitation method with following modification with Pt and Au NPs by the impregnation method. The nanocomposites were characterized by TEM, XRD, Raman and FTIR spectroscopy, DRIFTS, XPS, TPR-H2 methods. In HCHO detection, the modification of SnO2 with TiO2 leads to a shift in the optimal temperature from 150 to 100 °C. Further modification of SnO2/TiO2 nanocomposites with Au NPs increases the sensor signal at T = 100 °C, while modification with Pt NPs gives rise to the appearance of sensor responses at T = 25 °C and 50 °C. At 200 °C nanocomposites exhibited high selectivity toward formaldehyde within the sub-ppm concentration range among different VOCs. The influence of Pt and Au NPs on surface reactivity of SnO2/TiO2 composite and enhancement of the sensor response toward HCHO was studied by DRIFT spectroscopy and explained by the chemical and electronic sensitization mechanisms.
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Affiliation(s)
- Abulkosim Nasriddinov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1-3, 119991 Moscow, Russia; (A.N.); (V.P.); (A.G.)
- Department of Materials Science, Lomonosov Moscow State University, Leninskie Gory 1-3, 119991 Moscow, Russia
| | - Vadim Platonov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1-3, 119991 Moscow, Russia; (A.N.); (V.P.); (A.G.)
| | - Alexey Garshev
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1-3, 119991 Moscow, Russia; (A.N.); (V.P.); (A.G.)
- Department of Materials Science, Lomonosov Moscow State University, Leninskie Gory 1-3, 119991 Moscow, Russia
| | - Marina Rumyantseva
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1-3, 119991 Moscow, Russia; (A.N.); (V.P.); (A.G.)
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9
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Korotcenkov G. Electrospun Metal Oxide Nanofibers and Their Conductometric Gas Sensor Application. Part 2: Gas Sensors and Their Advantages and Limitations. NANOMATERIALS 2021; 11:nano11061555. [PMID: 34204655 PMCID: PMC8231294 DOI: 10.3390/nano11061555] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/07/2021] [Accepted: 06/08/2021] [Indexed: 01/09/2023]
Abstract
Electrospun metal oxide nanofibers, due to their unique structural and electrical properties, are now being considered as materials with great potential for gas sensor applications. This critical review attempts to assess the feasibility of these perspectives. This article discusses approaches to the manufacture of nanofiber-based gas sensors, as well as the results of analysis of the performances of these sensors. A detailed analysis of the disadvantages that can limit the use of electrospinning technology in the development of gas sensors is also presented in this article. It also proposes some approaches to solving problems that limit the use of nanofiber-based gas sensors. Finally, the summary provides an insight into the future prospects of electrospinning technology for the development of gas sensors aimed for the gas sensor market.
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Affiliation(s)
- Ghenadii Korotcenkov
- Department of Theoretical Physics, Moldova State University, 2009 Chisinau, Moldova
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10
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Wang Y, Pu H, Lu G, Sui X, Chen J. Quantitative analysis of the synergistic effect of Au nanoparticles on SnO 2-rGO nanocomposites for room temperature hydrogen sensing. Phys Chem Chem Phys 2021; 23:2377-2383. [PMID: 33458732 DOI: 10.1039/d0cp05701k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hydrogen detection devices based on gold-tin oxide/reduced graphene oxide (Au-SnO2/rGO) nanohybrids were fabricated by combining a hydrothermal method with sputter coating. The gas sensing performance of the Au-SnO2/rGO sensor was investigated under different concentrations of hydrogen from 0.04% to 1% at room temperature, which indicated a notable sensitive response even for 0.04% hydrogen. The activation energies of hydrogen adsorption/desorption were extracted via Arrhenius analysis which revealed the acceleration effect of gold dopants. This acceleration led to a faster response and recovery during hydrogen sensing. The activation energy analysis provided a more comprehensive understanding on the gas sensing mechanism. A hydrogen detection handheld device is demonstrated by integrating the sensor chip with a portable digital meter for direct readout of test results.
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Affiliation(s)
- Yale Wang
- Department of Mechanical Engineering, University of Wisconsin-Milwaukee, 3200 North Cramer Street, Milwaukee, WI 53211, USA.
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11
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Li J, Yang Y, Wang Q, Cheng X, Luo Y, An B, Bai J, Wang Y, Xie E. Design of size-controlled Au nanoparticles loaded on the surface of ZnO for ethanol detection. CrystEngComm 2021. [DOI: 10.1039/d0ce01318h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Schematic diagram of the reaction mechanism of the sensor in air and ethanol.
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Affiliation(s)
- Jianpeng Li
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
| | - Yifan Yang
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
| | - Qiao Wang
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
| | - Xu Cheng
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
| | - Yibing Luo
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
| | - Beixi An
- 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
| | - Erqing Xie
- School of Physical Science and Technology
- Lanzhou University
- Lanzhou
- China
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12
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Park SW, Jeong SY, Yoon JW, Lee JH. General Strategy for Designing Highly Selective Gas-Sensing Nanoreactors: Morphological Control of SnO 2 Hollow Spheres and Configurational Tuning of Au Catalysts. ACS APPLIED MATERIALS & INTERFACES 2020; 12:51607-51615. [PMID: 33146509 DOI: 10.1021/acsami.0c13760] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Catalyst-loaded hollow spheres are effective at detecting ethanol with high chemical reactivity. However, this has limited the widespread use of catalyst-loaded hollow spheres in designing highly selective gas sensors to less-reactive gases such as aromatics (e.g., xylene). Herein, we report the preparation of xylene-selective Au-SnO2 nanoreactors by loading Au nanoclusters on the inner surface of SnO2 hollow shells using the layer-by-layer assembly technique. The results revealed that the sensor based on SnO2 hollow spheres loaded with Au nanoclusters on the inner surface exhibited unprecedentedly high xylene selectivity and an ultrahigh xylene response, high enough to be used for indoor air quality monitoring, whereas the sensor based on SnO2 hollow spheres loaded with Au nanoclusters on the outer surface exhibited the typical ethanol-sensitive sensing behaviors as frequently reported in the literature. In addition, the xylene selectivity and response were optimized when the hollow shell was sufficiently thin (∼25 nm) and semipermeable (pore size = ∼3.5 nm), while the selectivity and response decreased when the shell was thick or highly gas permeable with large mesopores (∼30 nm). Accordingly, the underlying mechanism responsible for the unprecedentedly high xylene sensing performance is discussed in relation to the configuration of the loaded Au nanoclusters and the morphological characteristics including shell thickness and pore size distribution. This novel nanoreactor concept can be widely used to design highly selective gas sensors especially to less-reactive gases such as aromatics, aldehydes, and ketones.
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Affiliation(s)
- Sei-Woong Park
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Seong-Yong Jeong
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Ji-Wook Yoon
- Department of Information Materials Engineering, Division of Advanced Materials, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Jong-Heun Lee
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
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13
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Gu F, Di M, Han D, Hong S, Wang Z. Atomically Dispersed Au on In 2O 3 Nanosheets for Highly Sensitive and Selective Detection of Formaldehyde. ACS Sens 2020; 5:2611-2619. [PMID: 32786391 DOI: 10.1021/acssensors.0c01074] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
As an important industrial chemical, formaldehyde is used in various fields but is harmful to health. Developing a convenient detection device for formaldehyde is significant. Based on atomically dispersed Au on In2O3 nanosheets, a formaldehyde sensor was fabricated in this work. The highly dispersed Au obtained by the ultraviolet (UV) light-assisted reduction method helps improve the sensing performance. A meager loading amount (0.01 wt %) of Au on In2O3 nanosheets exhibits high sensitivity toward ppb-level formaldehyde. Au acts as an electron sink and promotes the oxidation of formaldehyde. Atomically dispersed Au on In2O3 nanosheets decreases the activation energy and increases the number of active sites, which result in a highly efficient conversion of formaldehyde and a marked resistance change of the fabricated sensors. The selective adsorption and oxidation of formaldehyde on single atom Au's uniform sites establish excellent selectivity. Besides, the sensor exhibits short response/recovery time and excellent stability, with promising applications in formaldehyde detection.
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Affiliation(s)
- Fubo Gu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Mengyu Di
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Dongmei Han
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Song Hong
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Zhihua Wang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
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14
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Rovezzi M, Harris A, Detlefs B, Bohdan T, Svyazhin A, Santambrogio A, Degler D, Baran R, Reynier B, Noguera Crespo P, Heyman C, Van Der Kleij HP, Van Vaerenbergh P, Marion P, Vitoux H, Lapras C, Verbeni R, Kocsis MM, Manceau A, Glatzel P. TEXS: in-vacuum tender X-ray emission spectrometer with 11 Johansson crystal analyzers. JOURNAL OF SYNCHROTRON RADIATION 2020; 27:813-826. [PMID: 32381786 PMCID: PMC7285681 DOI: 10.1107/s160057752000243x] [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: 12/13/2019] [Accepted: 02/20/2020] [Indexed: 05/22/2023]
Abstract
The design and first results of a large-solid-angle X-ray emission spectrometer that is optimized for energies between 1.5 keV and 5.5 keV are presented. The spectrometer is based on an array of 11 cylindrically bent Johansson crystal analyzers arranged in a non-dispersive Rowland circle geometry. The smallest achievable energy bandwidth is smaller than the core hole lifetime broadening of the absorption edges in this energy range. Energy scanning is achieved using an innovative design, maintaining the Rowland circle conditions for all crystals with only four motor motions. The entire spectrometer is encased in a high-vacuum chamber that allocates a liquid helium cryostat and provides sufficient space for in situ cells and operando catalysis reactors.
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Affiliation(s)
- Mauro Rovezzi
- Université Grenoble Alpes, CNRS, IRD, Irstea, Météo France, OSUG, FAME, 71 avenue des Martyrs, CS 40220, 38043 Grenoble, France
- European Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble, France
| | | | - Blanka Detlefs
- European Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble, France
| | - Timothy Bohdan
- European Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble, France
| | - Artem Svyazhin
- European Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble, France
- M. N. Miheev Institute of Metal Physics, Ural Branch of the Russian Academy of Science, 620990 Ekaterinburg, Russia
| | - Alessandro Santambrogio
- European Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble, France
| | - David Degler
- European Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble, France
| | - Rafal Baran
- European Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble, France
| | - Benjamin Reynier
- European Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble, France
| | - Pedro Noguera Crespo
- Added Value Solutions (AVS), Pol. Ind. Sigma Xixilion Kalea 2, Bajo Pabellón 10, 20870 Elgoibar, Spain
| | | | - Hans-Peter Van Der Kleij
- European Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble, France
| | - Pierre Van Vaerenbergh
- European Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble, France
| | - Philippe Marion
- European Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble, France
| | - Hugo Vitoux
- European Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble, France
| | - Christophe Lapras
- European Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble, France
| | - Roberto Verbeni
- European Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble, France
| | - Menhard Menyhert Kocsis
- European Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble, France
| | - Alain Manceau
- ISTerre, Université Grenoble Alpes, CNRS, CS 40700, 38058 Grenoble, France
| | - Pieter Glatzel
- European Synchrotron Radiation Facility, 71 avenue des Martyrs, CS 40220, 38043 Grenoble, France
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15
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Tong W, Wang Y, Bian Y, Wang A, Han N, Chen Y. Sensitive Cross-Linked SnO 2:NiO Networks for MEMS Compatible Ethanol Gas Sensors. NANOSCALE RESEARCH LETTERS 2020; 15:35. [PMID: 32025974 PMCID: PMC7002749 DOI: 10.1186/s11671-020-3269-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 01/27/2020] [Indexed: 05/06/2023]
Abstract
Nowadays, it is still technologically challenging to prepare highly sensitive sensing films using microelectrical mechanical system (MEMS) compatible methods for miniaturized sensors with low power consumption and high yield. Here, sensitive cross-linked SnO2:NiO networks were successfully fabricated by sputtering SnO2:NiO target onto the etched self-assembled triangle polystyrene (PS) microsphere arrays and then ultrasonically removing the PS microsphere templates in acetone. The optimum line width (~ 600 nm) and film thickness (~ 50 nm) of SnO2:NiO networks were obtained by varying the plasma etching time and the sputtering time. Then, thermal annealing at 500 °C in H2 was implemented to activate and reorganize the as-deposited amorphous SnO2:NiO thin films. Compared with continuous SnO2:NiO thin film counterparts, these cross-linked films show the highest response of ~ 9 to 50 ppm ethanol, low detection limits (< 5 ppm) at 300 °C, and also high selectivity against NO2, SO2, NH3, C7H8, and acetone. The gas-sensing enhancement could be mainly attributed to the creating of more active adsorption sites by increased stepped surface in cross-linked SnO2:NiO network. Furthermore, this method is MEMS compatible and of generality to effectively fabricate other cross-linked sensing films, showing the promising potency in the production of low energy consumption and wafer-scale MEMS gas sensors.
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Affiliation(s)
- Weiguang Tong
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Environmentally Harmful Chemicals Analysis, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Ying Wang
- Department of Physics, School of Science, Beijing Jiaotong University, Beijing, 100044, China.
| | - Yuzhi Bian
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Anqi Wang
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Ning Han
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China.
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China.
| | - Yunfa Chen
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China
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16
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Degler D, Weimar U, Barsan N. Current Understanding of the Fundamental Mechanisms of Doped and Loaded Semiconducting Metal-Oxide-Based Gas Sensing Materials. ACS Sens 2019; 4:2228-2249. [PMID: 31365820 DOI: 10.1021/acssensors.9b00975] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Introducing additives in semiconducting metal oxides includes, besides the use of filters, dynamic operation procedures and chemometric approaches, the most common way of tuning the sensitivity, selectivity, and stability of chemoresitsive gas sensors. For the vast majority of commercially used gas sensing materials, the introduction of additives is essential and is one of the longest lasting topics in gas sensor research. This Review discusses the different chemical and electrical sensitization mechanisms of additives as well as the role of different structures. Based on state-of-the-art experimental findings, this Review revises and updates the concepts that are used to explain the mechanisms through which the additives influence the performance of typical gas sensing materials, i.e., oxide nanoparticles arranged in a porous layer. The first sections classify the different additive structures, namely, doped or loaded oxides as well as mixtures of oxides, and describe the basic working principle of pristine semiconducting metal oxide gas sensors. The subsequent sections discuss different chemical and/or electrical contributions to the sensitization by additive structures, their mutual influence on each other, and the way they impact the sensing properties. The presented concepts and models are essential for understanding the complex role of additives and provide the basis for a knowledge-based design of gas sensors based on semiconducting metal oxide nanoparticles, which is outlined in a separate section.
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Affiliation(s)
- David Degler
- Faculty of Industrial Technologies, Furtwangen University, D-78532 Tuttlingen, Germany
| | - Udo Weimar
- Institute of Physical and Theoretical Chemistry and Centre for Light-Matter Interaction, Sensors & Analytics (LISA+), University of Tübingen, D-72076 Tübingen, Germany
| | - Nicolae Barsan
- Institute of Physical and Theoretical Chemistry and Centre for Light-Matter Interaction, Sensors & Analytics (LISA+), University of Tübingen, D-72076 Tübingen, Germany
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17
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Moon YK, Jeong SY, Kang YC, Lee JH. Metal Oxide Gas Sensors with Au Nanocluster Catalytic Overlayer: Toward Tuning Gas Selectivity and Response Using a Novel Bilayer Sensor Design. ACS APPLIED MATERIALS & INTERFACES 2019; 11:32169-32177. [PMID: 31398287 DOI: 10.1021/acsami.9b11079] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Noble metals or oxide catalysts have traditionally been loaded or doped to enhance the gas sensing properties of oxide semiconductor chemiresistors. However, the selective detection of various chemicals for a wide range of new applications remains a challenging problem. In this paper, we propose a novel bilayer design with an oxide chemiresistor sensing layer and nanoscale catalytic Au overlayer to provide high controllability for gas sensing characteristics. The Au nanocluster overlayer significantly enhances the methylbenzene response of a SnO2 thick film sensor by reforming gases into more reactive species and suppresses the responses to reactive interference gases through oxidative filtering, leading to excellent selectivity to methylbenzene. Gas sensing characteristics can be tuned by controlling the morphology, amount, and number density of Au nanoclusters through the variation in the Au coating thickness (0.5-3 nm) and thermal annealing conditions (0.5-4 h at 550 °C). Furthermore, the general validity of the proposed Au-coated bilayer sensor design was confirmed through the enhancement of response and selectivity toward methylbenzenes by coating Au nanoclusters onto ZnO and Co3O4 sensors. The sensing mechanism, advantages, and potential applications of bilayer sensors are discussed from the perspective of the separation of sensing and catalytic reactions, as well as the reforming and oxidation of analyte gases in association with the configuration of the sensing layer and Au catalytic overlayer.
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Affiliation(s)
- Young Kook Moon
- Department of Materials Science and Engineering , Korea University , Seoul 02841 , Republic of Korea
| | - Seong-Yong Jeong
- Department of Materials Science and Engineering , Korea University , Seoul 02841 , Republic of Korea
| | - Yun Chan Kang
- Department of Materials Science and Engineering , Korea University , Seoul 02841 , Republic of Korea
| | - Jong-Heun Lee
- Department of Materials Science and Engineering , Korea University , Seoul 02841 , Republic of Korea
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18
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Elger AK, Baranyai J, Hofmann K, Hess C. Direct Operando Spectroscopic Observation of Oxygen Vacancies in Working Ceria-Based Gas Sensors. ACS Sens 2019; 4:1497-1501. [PMID: 31117364 DOI: 10.1021/acssensors.9b00521] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Metal-oxide semiconductors are of great interest for gas-sensing applications. We provide new insights into the mode of operation of ceria-based gas sensors during ethanol gas sensing using combined operando Raman-gas-phase FTIR spectroscopy. Visible Raman spectroscopy is employed to monitor the presence of oxygen vacancies in ceria via F2g mode softening, while simultaneously recorded FTIR spectra capture the gas-phase composition. Such an experimental approach allowing the direct observation of oxygen vacancies in metal-oxide gas sensors has not been reported in the literature. By systematically varying the gas atmosphere and temperature, we can relate the sensor response to the spectroscopic signals, enabling us to obtain new fundamental insight into the functioning of metal-oxide semiconductor gas sensors, as well as their differences from heterogeneous catalysts.
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Affiliation(s)
- Ann-Kathrin Elger
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Strasse 8, 64287 Darmstadt, Germany
| | - Julian Baranyai
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Strasse 8, 64287 Darmstadt, Germany
| | - Kathrin Hofmann
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Strasse 8, 64287 Darmstadt, Germany
| | - Christian Hess
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Strasse 8, 64287 Darmstadt, Germany
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19
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Krivetskiy V, Zamanskiy K, Beltyukov A, Asachenko A, Topchiy M, Nechaev M, Garshev A, Krotova A, Filatova D, Maslakov K, Rumyantseva M, Gaskov A. Effect of AuPd Bimetal Sensitization on Gas Sensing Performance of Nanocrystalline SnO 2 Obtained by Single Step Flame Spray Pyrolysis. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E728. [PMID: 31083465 PMCID: PMC6567076 DOI: 10.3390/nano9050728] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 05/01/2019] [Accepted: 05/05/2019] [Indexed: 12/14/2022]
Abstract
Improvement of sensitivity, lower detection limits, stability and reproducibility of semiconductor metal oxide gas sensor characteristics are required for their application in the fields of ecological monitoring, industrial safety, public security, express medical diagnostics, etc. Facile and scalable single step flame spray pyrolysis (FSP) synthesis of bimetal AuPd sensitized nanocrystalline SnO2 is reported. The materials chemical composition, structure and morphology has been studied by XRD, XPS, HAADFSTEM, BET, ICP-MS techniques. Thermo-programmed reduction with hydrogen (TPR-H2) has been used for materials chemical reactivity characterization. Superior gas sensor response of bimetallic modified SnO2 towards wide concentration range of reducing (CO, CH4, C3H8, H2S, NH3) and oxidizing (NO2) gases compared to pure and monometallic modified SnO2 is reported for dry and humid gas detection conditions. The combination of facilitated oxygen molecule spillover on gold particles and electronic effect of Fermi level control by reoxidizing Pd-PdO clusters on SnO2 surface is proposed to give rise to the observed enhanced gas sensor performance.
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Affiliation(s)
- Valeriy Krivetskiy
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1/3, 119234 Moscow, Russia.
| | - Konstantin Zamanskiy
- Faculty of Materials Sciences, Lomonosov Moscow State University, Leninskie gory 1/3, 119234 Moscow, Russia.
| | - Artemiy Beltyukov
- Udmurt Federal Research Center of UB RAS, Laboratory of Atomic Structure and Surface Analysis, Kirova 132, 426000 Izhevsk, Russia.
| | - Andrey Asachenko
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1/3, 119234 Moscow, Russia.
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Prospect 29, 119991 Moscow, Russia.
| | - Maxim Topchiy
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1/3, 119234 Moscow, Russia.
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Prospect 29, 119991 Moscow, Russia.
| | - Mikhail Nechaev
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1/3, 119234 Moscow, Russia.
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Prospect 29, 119991 Moscow, Russia.
| | - Alexey Garshev
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1/3, 119234 Moscow, Russia.
| | - Alina Krotova
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1/3, 119234 Moscow, Russia.
| | - Darya Filatova
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1/3, 119234 Moscow, Russia.
| | - Konstantin Maslakov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1/3, 119234 Moscow, Russia.
| | - Marina Rumyantseva
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1/3, 119234 Moscow, Russia.
| | - Alexander Gaskov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie gory 1/3, 119234 Moscow, Russia.
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20
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Liu B, Xu Y, Li K, Wang H, Gao L, Luo Y, Duan G. Pd-Catalyzed Reaction-Producing Intermediate S on a Pd/In 2O 3 Surface: A Key To Achieve the Enhanced CS 2-Sensing Performances. ACS APPLIED MATERIALS & INTERFACES 2019; 11:16838-16846. [PMID: 30938144 DOI: 10.1021/acsami.9b01638] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Although chemiresistive gas sensors, based on metal-oxide semiconductors, have exhibited particular promise for the monitoring of air pollution, they are often limited because of poor selectivity. In that case, to overcome this issue, according to the essence of the gas-sensing process, the method of reforming the surface reaction path on the surface of the sensing materials was used. Here, we report that Pd nanoparticles supported over the In2O3 composites, featured with a yolk-shell structure, enable the trace detection of carbon disulfide (CS2) gas molecules, which are immensely dangerous to humans and animals. Moreover, the prominent enhancement of the gas response and the ultraselective CS2-sensing characteristic were acquired in comparison with pristine In2O3 sensors. Significantly, density functional theory calculations revealed that the Pd supported on In2O3 greatly facilitates the adsorption capacity to CS2, and the intermediate S, produced by Pd-catalyzed desulfurization reaction, on the Pd/In2O3 surface during the sensing process is a key to achieving a high CS2 gas response as well as ultraselectivity, which is well in agreement with the X-ray photoelectron spectroscopy analysis results. On the basis of these results, a new sensing mechanism model for the CS2-sensing process was put forward.
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Affiliation(s)
- Bo Liu
- School of Optical and Electronic Information , Huazhong University of Science and Technology , Wuhan 430074 , P. R. China
- Key Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology, Institute of Solid State Physics , Chinese Academy of Science , Hefei 230031 , P. R. China
- University of Science and Technology of China , Hefei 230026 , P. R. China
| | - Yingming Xu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science , Heilongjiang University , Harbin 150080 , China
| | - Ke Li
- Key Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology, Institute of Solid State Physics , Chinese Academy of Science , Hefei 230031 , P. R. China
- University of Science and Technology of China , Hefei 230026 , P. R. China
| | - Hong Wang
- Key Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology, Institute of Solid State Physics , Chinese Academy of Science , Hefei 230031 , P. R. China
- University of Science and Technology of China , Hefei 230026 , P. R. China
| | - Lei Gao
- Key Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology, Institute of Solid State Physics , Chinese Academy of Science , Hefei 230031 , P. R. China
- University of Science and Technology of China , Hefei 230026 , P. R. China
| | - Yuanyuan Luo
- Key Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology, Institute of Solid State Physics , Chinese Academy of Science , Hefei 230031 , P. R. China
- University of Science and Technology of China , Hefei 230026 , P. R. China
| | - Guotao Duan
- School of Optical and Electronic Information , Huazhong University of Science and Technology , Wuhan 430074 , P. R. China
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21
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Li H, Chu S, Ma Q, Fang Y, Wang J, Che Q, Wang G, Yang P. Novel Construction of Morphology-Tunable C-N/SnO 2/ZnO/Au Microspheres with Ultrasensitivity and High Selectivity for Triethylamine under Various Temperature Detections. ACS APPLIED MATERIALS & INTERFACES 2019; 11:8601-8611. [PMID: 30702279 DOI: 10.1021/acsami.8b22357] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Morphology-tunable C-N/SnO2-based hierarchical microspheres with good gas sensitivity for triethylamine (TEA) have been fabricated via facile electrospinning and a subsequent calcination process. The reaction temperature and modifying calcining technology played a dominant role for the morphological evolution from precursor fibers to microspherical shapes and the formation of C-N-decorated SnO2 phase composition. C-N/SnO2/ZnO composites with tunable crystallinity, microstructure, and gas-sensing performance were strictly dependent on the added amount of Zn element. Fascinatingly, the constructed C-N/SnO2/ZnO/Au composites can not only precisely regulate the crystal size, dispersion status, loading position, and content of Au nanoparticles but also display excellent gas-sensing properties with ultrasensitivity and high selectivity under various temperature detections. The response of C-N/SnO2/ZnO/Au composites can reach up to approximately 1970, calculated to be 121.6 and 23.6 times for 50 ppm TEA molecules at optimal conditions compared with C-N/SnO2 and C-N/SnO2/ZnO microspheres, respectively, actually representing the highest response value at high temperatures reported to date. The superior long-aging stability of sensing behaviors and phase structures can be also observed after 1 month. More importantly, novel C-N/SnO2/ZnO/Au sensors were employed for availably detecting low-concentration volatiles released from the storage procedure of fishes at 80 °C, indicating the practical application in chemical detectors and biosensors at low temperature. The novel gas-sensing mechanisms derived primarily from the combination of phase compositions, morphologies, and unique surface/interface transfer processes of C-N/SnO2/ZnO/Au composites are presented and investigated in detail, which will contribute to the design and development of other semiconductor-based composite sensors.
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Affiliation(s)
- Hui Li
- School of Material Science and Engineering , University of Jinan , 250022 Jinan , P. R. China
| | - Shushu Chu
- School of Material Science and Engineering , University of Jinan , 250022 Jinan , P. R. China
| | - Qian Ma
- School of Material Science and Engineering , University of Jinan , 250022 Jinan , P. R. China
| | - Yuan Fang
- School of Material Science and Engineering , University of Jinan , 250022 Jinan , P. R. China
| | - Junpeng Wang
- School of Material Science and Engineering , University of Jinan , 250022 Jinan , P. R. China
| | - Quande Che
- School of Material Science and Engineering , University of Jinan , 250022 Jinan , P. R. China
| | - Gang Wang
- School of Material Science and Engineering , University of Jinan , 250022 Jinan , P. R. China
| | - Ping Yang
- School of Material Science and Engineering , University of Jinan , 250022 Jinan , P. R. China
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22
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Degler D. Trends and Advances in the Characterization of Gas Sensing Materials Based on Semiconducting Oxides. SENSORS 2018; 18:s18103544. [PMID: 30347733 PMCID: PMC6210413 DOI: 10.3390/s18103544] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 10/10/2018] [Accepted: 10/10/2018] [Indexed: 11/26/2022]
Abstract
The understanding of the fundamental properties and processes of chemoresistive gas sensors based on semiconducting metal oxides is driven by the available characterization techniques and sophisticated approaches used to identify structure-function-relationships. This article summarizes trends and advances in the characterization of gas sensing materials based on semiconducting metal oxides, giving a unique overview of the state of the art methodology used in this field. The focus is set on spectroscopic techniques, but the presented concepts apply to other characterization methods, such as electronic, imaging or diffraction-based techniques. The presented concepts are relevant for academic research as well as for improving R&D approaches in industry.
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Affiliation(s)
- David Degler
- European Synchrotron Radiation Facility, 71, Avenue des Martyrs, 38043 Grenoble, France.
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23
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Hrachowina L, Domènech-Gil G, Pardo A, Seifner MS, Gràcia I, Cané C, Romano-Rodríguez A, Barth S. Site-Specific Growth and in Situ Integration of Different Nanowire Material Networks on a Single Chip: Toward a Nanowire-Based Electronic Nose for Gas Detection. ACS Sens 2018; 3:727-734. [PMID: 29485272 DOI: 10.1021/acssensors.8b00073] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new method for the site-selective synthesis of nanowires has been developed to enable material growth with defined morphology and, at the same time, different composition on the same chip surface. The chemical vapor deposition approach for the growth of these nanowire-based resistive devices using micromembranes can be easily modified and represents a simple, adjustable fabrication process for the direct integration of nanowire meshes in multifunctional devices. This proof-of-concept study includes the deposition of SnO2, WO3, and Ge nanowires on the same chip. The individual resistors exhibit adequate gas sensing responses toward changing gas concentrations of CO, NO2, and humidity diluted in synthetic air. The data have been processed by principal component analysis with cluster responses that can be easily separated, and thus, the devices described herein are in principle suitable for environmental monitoring.
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Affiliation(s)
| | | | | | | | - Isabel Gràcia
- Institut de Microelectrònica de Barcelona, Centre Nacional de Microelectrònica, Consejo Superior de Investigaciones Científicas (CSIC), 08193 Bellaterra, Spain
| | - Carles Cané
- Institut de Microelectrònica de Barcelona, Centre Nacional de Microelectrònica, Consejo Superior de Investigaciones Científicas (CSIC), 08193 Bellaterra, Spain
| | | | - Sven Barth
- Institute of Materials Chemistry, TU Wien, 1060 Vienna, Austria
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24
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Müller SA, Degler D, Feldmann C, Türk M, Moos R, Fink K, Studt F, Gerthsen D, Bârsan N, Grunwaldt JD. Exploiting Synergies in Catalysis and Gas Sensing using Noble Metal-Loaded Oxide Composites. ChemCatChem 2018. [DOI: 10.1002/cctc.201701545] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sabrina A. Müller
- Institute for Chemical Technology and Polymer Chemistry (ITCP); Karlsruhe Institute of Technology (KIT); 76131 Karlsruhe Germany
| | - David Degler
- Institute of Physical and Theoretical Chemistry; University of Tübingen (EKUT); 72076 Tübingen Germany
| | - Claus Feldmann
- Institute of Inorganic Chemistry (AOC); Karlsruhe Institute of Technology (KIT); 76131 Karlsruhe Germany
| | - Michael Türk
- Institute for Technical Thermodynamics and Refrigeration (ITTK); Karlsruhe Institute of Technology (KIT); 76131 Karlsruhe Germany
| | - Ralf Moos
- Department of Functional Materials; University of Bayreuth; 95447 Bayreuth Germany
| | - Karin Fink
- Institute of Nanotechnology (INT); Karlsruhe Institute of Technology (KIT); 76344 Eggenstein-Leopoldshafen Germany
| | - Felix Studt
- Institute for Chemical Technology and Polymer Chemistry (ITCP); Karlsruhe Institute of Technology (KIT); 76131 Karlsruhe Germany
- Institute of Catalysis Research and Technology (IKFT); Karlsruhe Institute of Technology (KIT); 76344 Eggenstein-Leopoldshafen Germany
| | - Dagmar Gerthsen
- Laboratory for Electron Microscopy (LEM); Karlsruhe Institute of Technology (KIT); 76131 Karlsruhe Germany
| | - Nicolae Bârsan
- Institute of Physical and Theoretical Chemistry; University of Tübingen (EKUT); 72076 Tübingen Germany
| | - Jan-Dierk Grunwaldt
- Institute for Chemical Technology and Polymer Chemistry (ITCP); Karlsruhe Institute of Technology (KIT); 76131 Karlsruhe Germany
- Institute of Catalysis Research and Technology (IKFT); Karlsruhe Institute of Technology (KIT); 76344 Eggenstein-Leopoldshafen Germany
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25
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Tofighi G, Lichtenberg H, Pesek J, Sheppard TL, Wang W, Schöttner L, Rinke G, Dittmeyer R, Grunwaldt JD. Continuous microfluidic synthesis of colloidal ultrasmall gold nanoparticles:in situstudy of the early reaction stages and application for catalysis. REACT CHEM ENG 2017. [DOI: 10.1039/c7re00114b] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The formation of gold nanoparticles in the first 2–20 ms of the reaction was studiedin situwith XAS using microfluidics.
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Affiliation(s)
- Ghazal Tofighi
- Institute for Chemical Technology and Polymer Chemistry (ITCP)
- Karlsruhe Institute of Technology (KIT)
- D-76131 Karlsruhe
- Germany
| | - Henning Lichtenberg
- Institute for Chemical Technology and Polymer Chemistry (ITCP)
- Karlsruhe Institute of Technology (KIT)
- D-76131 Karlsruhe
- Germany
- Institute of Catalysis Research and Technology (IKFT)
| | - Jan Pesek
- Institute for Chemical Technology and Polymer Chemistry (ITCP)
- Karlsruhe Institute of Technology (KIT)
- D-76131 Karlsruhe
- Germany
| | - Thomas L. Sheppard
- Institute for Chemical Technology and Polymer Chemistry (ITCP)
- Karlsruhe Institute of Technology (KIT)
- D-76131 Karlsruhe
- Germany
- Institute of Catalysis Research and Technology (IKFT)
| | - Wu Wang
- Institute of Nanotechnology (INT)
- Karlsruhe Institute of Technology (KIT)
- D-76344 Eggenstein-Leopoldshafen
- Germany
| | - Ludger Schöttner
- Institute of Functional Interfaces (IFG)
- Karlsruhe Institute of Technology (KIT)
- D-76344 Eggenstein-Leopoldshafen
- Germany
| | - Günter Rinke
- Institute for Micro Process Engineering (IMVT)
- Karlsruhe Institute of Technology (KIT)
- D-76344 Eggenstein-Leopoldshafen
- Germany
| | - Roland Dittmeyer
- Institute for Micro Process Engineering (IMVT)
- Karlsruhe Institute of Technology (KIT)
- D-76344 Eggenstein-Leopoldshafen
- Germany
| | - Jan-Dierk Grunwaldt
- Institute for Chemical Technology and Polymer Chemistry (ITCP)
- Karlsruhe Institute of Technology (KIT)
- D-76131 Karlsruhe
- Germany
- Institute of Catalysis Research and Technology (IKFT)
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