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Li M, Chananonnawathorn C, Pan N, Limwichean S, Deng Z, Horprathum M, Chang J, Wang S, Nakajima H, Klamchuen A, Li L, Meng G. Prompt Electronic Discrimination of Gas Molecules by Self-Heating Temperature Modulation. ACS Sens 2024; 9:206-216. [PMID: 38114442 DOI: 10.1021/acssensors.3c01839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Though considerable progress has been achieved on gas molecule recognition by electronic nose (e-nose) comprised of nonselective (metal oxide) semiconductor chemiresistors, extracting adequate molecular features within short time (<1 s) remains a big obstacle, which hinders the emerging e-nose applications in lethal or explosive gas warning. Herein, by virtue of the ultrafast (∼20 μs) thermal relaxation time of self-heated WO3-based chemiresistors fabricated via oblique angle deposition, instead of external heating, self-heating temperature modulation has been proposed to generate sufficient electrical response features. Accurate discrimination of 12 gases (including 3 xylene isomers with the same function group and molecular weight) has been readily achieved within 0.5-1 s, which is one order faster than the state-of-the-art e-noses. A smart wireless e-nose, capable of instantaneously discriminating target gas in ambient air background, has been developed, paving the way for the practical applications of e-nose in the area of homeland security and public health.
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Affiliation(s)
- Meng Li
- Anhui Provincial Key Laboratory of Photonic Devices and Materials, Anhui Institute of Optics and Fine Mechanics, and Key Lab of Photovoltaic and Energy Conservation Materials, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
- University of Science and Technology of China, Hefei 230026, China
- Advanced Laser Technology Laboratory of Anhui Province, Hefei 230037, China
| | - Chanunthorn Chananonnawathorn
- Opto-Electrochemical Sensing Research Team, Spectroscopic and Sensing Devices Research Group, National Electronics and Computer Technology Center, Pathum Thani 12120, Thailand
| | - Ning Pan
- University of Science and Technology of China, Hefei 230026, China
- Laboratory of Atmospheric Physico-Chemistry, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
| | - Saksorn Limwichean
- Opto-Electrochemical Sensing Research Team, Spectroscopic and Sensing Devices Research Group, National Electronics and Computer Technology Center, Pathum Thani 12120, Thailand
| | - Zanhong Deng
- Anhui Provincial Key Laboratory of Photonic Devices and Materials, Anhui Institute of Optics and Fine Mechanics, and Key Lab of Photovoltaic and Energy Conservation Materials, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
- Advanced Laser Technology Laboratory of Anhui Province, Hefei 230037, China
| | - Mati Horprathum
- Opto-Electrochemical Sensing Research Team, Spectroscopic and Sensing Devices Research Group, National Electronics and Computer Technology Center, Pathum Thani 12120, Thailand
| | - Junqing Chang
- Anhui Provincial Key Laboratory of Photonic Devices and Materials, Anhui Institute of Optics and Fine Mechanics, and Key Lab of Photovoltaic and Energy Conservation Materials, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
- Advanced Laser Technology Laboratory of Anhui Province, Hefei 230037, China
| | - Shimao Wang
- Anhui Provincial Key Laboratory of Photonic Devices and Materials, Anhui Institute of Optics and Fine Mechanics, and Key Lab of Photovoltaic and Energy Conservation Materials, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
- Advanced Laser Technology Laboratory of Anhui Province, Hefei 230037, China
| | - Hideki Nakajima
- Synchrotron Light Research Institute, Maung 30000, Nakhon Ratchasima, Thailand
| | - Annop Klamchuen
- National Nanotechnology Center, National Science and Technology Development Agency, Pathum Thani 12120, Thailand
| | - Liang Li
- School of Physical Science and Technology, Jiangsu Key Laboratory of Thin Films, Center for Energy Conversion Materials and Physics (CECMP), Soochow University, Suzhou 215006, China
| | - Gang Meng
- Anhui Provincial Key Laboratory of Photonic Devices and Materials, Anhui Institute of Optics and Fine Mechanics, and Key Lab of Photovoltaic and Energy Conservation Materials, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
- Advanced Laser Technology Laboratory of Anhui Province, Hefei 230037, China
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Wang Z, Ding H, Liu X, Zhao J. Synthesis and NO 2 Sensing Properties of In 2O 3 Micro-Flowers Composed of Nanorods. Nanomaterials (Basel) 2023; 13:2289. [PMID: 37630873 PMCID: PMC10459187 DOI: 10.3390/nano13162289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 07/31/2023] [Accepted: 08/03/2023] [Indexed: 08/27/2023]
Abstract
Semiconductor oxide gas sensors have important applications in environmental protection, domestic health, and other fields. Research has shown that designing the morphology of sensitive materials can effectively improve the sensing characteristics of sensors. In this paper, by controlling the solvothermal reaction time, a unique hexagonal flower-like structure of In2O3 materials consisting of cuboid nanorods with a side length of 100-300 nm was prepared. The characterization results indicated that with the increase in reaction time, the materials exhibited significant morphological evolution. When the solvent heating time is 5 h, the flower-like structure is basically composed of hexagonal nanosheets with a thickness of several hundred nanometers and a side length of several micrometers. With the increase in reaction time, the apex angles of the nano sheets gradually become obtuse, and, finally, with the Ostwald ripening process, they become cuboid nanorods with side lengths of 100-300 nanometers, forming unique micro-flowers. Among them, the material prepared with a reaction time of 20 h has good sensing performance for NO2, exhibiting low operating temperature and detection limit, good selectivity, repeatability, and long-term stability, thus suggesting a good application prospect.
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Affiliation(s)
- Zhenyu Wang
- School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
| | - Haizhen Ding
- School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
| | - Xuefeng Liu
- School of Ocean Science and Technology, Dalian University of Technology, Panjin 124221, China
| | - Jing Zhao
- School of Life Science and Medicine, Dalian University of Technology, Panjin 124221, China
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Wang Y, Ouyang T, Meng L, Wu L, Bai W, Zhang S, Zeng X. Studies on the Platinum Thick Film Sensor Conformally Written by Laser Micro-Cladding: Formability, Microstructure, and Performance. ACS Appl Mater Interfaces 2023; 15:19209-19219. [PMID: 37039286 DOI: 10.1021/acsami.3c01974] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
In this paper, laser micro-cladding technology (LMC) was conducted to prepare high-temperature Pt thick film sensors in situ. The formability, microstructure, sintering mechanism, and electrical properties of the LMCed Pt thick films were first studied systematically. Results indicated that with the increase of laser power density, the sintering degree of the Pt thick film increased obviously, improving its adhesion strength and reducing its resistivity. However, when the laser power density exceeded the threshold, holes or grooves were formed in the Pt film, leading to the degeneration of its properties. A Pt thick film with good adhesion strength, excellent conductive networks, and the minimum resistivity (46 ± 2 μΩ·cm) was obtained at a laser power density of 1.37 × 106 W·cm-2. Then, Pt thick film temperature sensors (including Pt thermal resistance temperature (RTD) and Pt-Pt10%Rh thermocouple sensors) were conformally prepared by LMC. Their temperature-sensing performance became stable after the initial high-temperature calibration, with a linearity of 0.9985 for the RTD with a TCR of 2.46 × 10-3/°C (at 920 °C) and a linearity of 0.9905 for the thermocouple with a Seebeck coefficient of 9.7 μV/°C, both of which are better than that made by direct DC magnetron sputtering deposition. Therefore, this work provides a novel feasible way to conformally integrate high-performance Pt film sensors in situ.
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Affiliation(s)
- Yueyue Wang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Taoyuan Ouyang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Li Meng
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Liexin Wu
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Wuxia Bai
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Shuhuan Zhang
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xiaoyan Zeng
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
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Zhu LY, Ou LX, Mao LW, Wu XY, Liu YP, Lu HL. Advances in Noble Metal-Decorated Metal Oxide Nanomaterials for Chemiresistive Gas Sensors: Overview. Nanomicro Lett 2023; 15:89. [PMID: 37029296 PMCID: PMC10082150 DOI: 10.1007/s40820-023-01047-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 02/25/2023] [Indexed: 06/19/2023]
Abstract
Highly sensitive gas sensors with remarkably low detection limits are attractive for diverse practical application fields including real-time environmental monitoring, exhaled breath diagnosis, and food freshness analysis. Among various chemiresistive sensing materials, noble metal-decorated semiconducting metal oxides (SMOs) have currently aroused extensive attention by virtue of the unique electronic and catalytic properties of noble metals. This review highlights the research progress on the designs and applications of different noble metal-decorated SMOs with diverse nanostructures (e.g., nanoparticles, nanowires, nanorods, nanosheets, nanoflowers, and microspheres) for high-performance gas sensors with higher response, faster response/recovery speed, lower operating temperature, and ultra-low detection limits. The key topics include Pt, Pd, Au, other noble metals (e.g., Ag, Ru, and Rh.), and bimetals-decorated SMOs containing ZnO, SnO2, WO3, other SMOs (e.g., In2O3, Fe2O3, and CuO), and heterostructured SMOs. In addition to conventional devices, the innovative applications like photo-assisted room temperature gas sensors and mechanically flexible smart wearable devices are also discussed. Moreover, the relevant mechanisms for the sensing performance improvement caused by noble metal decoration, including the electronic sensitization effect and the chemical sensitization effect, have also been summarized in detail. Finally, major challenges and future perspectives towards noble metal-decorated SMOs-based chemiresistive gas sensors are proposed.
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Affiliation(s)
- Li-Yuan Zhu
- State Key Laboratory of ASIC and System, Shanghai Institute of Intelligent Electronics and Systems, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China
| | - Lang-Xi Ou
- State Key Laboratory of ASIC and System, Shanghai Institute of Intelligent Electronics and Systems, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China
| | - Li-Wen Mao
- School of Opto-Electronic Information and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, People's Republic of China
| | - Xue-Yan Wu
- State Key Laboratory of ASIC and System, Shanghai Institute of Intelligent Electronics and Systems, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China
| | - Yi-Ping Liu
- State Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Hong-Liang Lu
- State Key Laboratory of ASIC and System, Shanghai Institute of Intelligent Electronics and Systems, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China.
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5
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She X, Yao Q, Zou Q, Yang G, Shen Y, Jin C. Tunable Fabry-Pérot Resonator with Dynamic Structural Color: A Visual and Ultrasensitive Hydrogen Sensor. ACS Appl Mater Interfaces 2023; 15:16244-16252. [PMID: 36939114 DOI: 10.1021/acsami.2c22961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Hydrogen detection is crucial for the forthcoming hydrogen economy. Here, we present a visual, ultrasensitive, optical hydrogen sensor based on a tunable Fabry-Pérot (FP) resonator, which can fully release the volume expansion of palladium during hydrogenation and transfer this volume expansion into an optical signal. The FP resonator consists of a suspended polymethylmethacrylate/palladium (PMMA/Pd) bilayer on a gold (Au) square-hole array. The bottom of the gold square hole and hydrogen-sensitive PMMA/Pd bilayer form a dynamically tunable FP resonator. When hydrogen gas (H2) is loaded, the hydrogen-induced lateral expanding stress concavely deforms the suspended bilayer downward to the substrate, narrowing the metal-air-metal gap at the center of the hole, and finally leading to a spectral blue shift. Our experimental results show a giant spectral shift of 279 nm with a reflectance variation of 57% on exposure to 0.6% H2 mixed with air. Such an ultrahigh optical response results in a significant color change, enabling visual hydrogen detection. In addition, the sensor has a H2 detection limit down to 0.1% and good recyclability. These advantages indicate that the sensor has excellent potential for hydrogen sensing applications.
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Affiliation(s)
- Xiaoyi She
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Qiankun Yao
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Qiushun Zou
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Guowei Yang
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Yang Shen
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Chongjun Jin
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangzhou Key Laboratory of Flexible Electronic Materials and Wearable Devices, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
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6
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Hinojo A, Lujan E, Nel-lo M, Colominas S, Abella J. BaCe0.6Zr0.3Y0.1O3-α electrochemical hydrogen sensor for fusion applications. Fusion Engineering and Design 2023. [DOI: 10.1016/j.fusengdes.2023.113452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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7
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Promjantuk C, Lertvanithphol T, Limsuwan N, Limwichean S, Wongdamnern N, Sareein T, Phae-ngam W, Nakajima H, Poolcharuansin P, Horprathum M, Klamchuen A. Spectroscopic study on alternative plasmonic TiN-NRs film prepared by R-HiPIMS with GLAD technique. Radiat Phys Chem Oxf Engl 1993 2023. [DOI: 10.1016/j.radphyschem.2022.110589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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8
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Gorobtsov FY, Grigoryeva MK, Simonenko TL, Simonenko NP, Simonenko EP, Kuznetsov NT. Synthesis of Vanadium-Doped Nano-Sized WO3 by a Combination of Sol–Gel Process and Hydrothermal Treatment. RUSS J INORG CHEM+ 2022. [DOI: 10.1134/s0036023622601131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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9
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Selkirk A, Zeki Bas S, Cummins C, Aslan E, Patir IH, Zhussupbekova A, Prochukhan N, Borah D, Paiva A, Ozmen M, Morris MA. Block Copolymer Templated WO3 Surface Nanolines as Catalysts for Enhanced Epinephrine Sensing and the Oxygen Evolution Reaction. ChemElectroChem 2022. [DOI: 10.1002/celc.202200400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Andrew Selkirk
- University of Dublin Trinity College 1 College GreenDublin 2 Dublin IRELAND
| | - Salih Zeki Bas
- Selçuk Üniversitesi: Selcuk Universitesi Chemistry TURKEY
| | - Cian Cummins
- Trinity College: The University of Dublin Trinity College Chemistry IRELAND
| | - Emre Aslan
- Selçuk Üniversitesi: Selcuk Universitesi Biochemistry TURKEY
| | | | | | - Nadezda Prochukhan
- Trinity College: The University of Dublin Trinity College Chemistry IRELAND
| | - Dipu Borah
- Trinity College: The University of Dublin Trinity College Chemistry IRELAND
| | - Aislan Paiva
- Trinity College: The University of Dublin Trinity College Chemistry IRELAND
| | - Mustafa Ozmen
- Selçuk Üniversitesi: Selcuk Universitesi Chemistry TURKEY
| | - Michael A. Morris
- Trinity College: The University of Dublin Trinity College Chemistry IRELAND
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Shun K, Mori K, Masuda S, Hashimoto N, Hinuma Y, Kobayashi H, Yamashita H. Revealing hydrogen spillover pathways in reducible metal oxides. Chem Sci 2022; 13:8137-8147. [PMID: 35919430 PMCID: PMC9278487 DOI: 10.1039/d2sc00871h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 06/08/2022] [Indexed: 12/15/2022] Open
Abstract
Hydrogen spillover, the migration of dissociated hydrogen atoms from noble metals to their support materials, is a ubiquitous phenomenon and is widely utilized in heterogeneous catalysis and hydrogen storage materials. However, in-depth understanding of the migration of spilled hydrogen over different types of supports is still lacking. Herein, hydrogen spillover in typical reducible metal oxides, such as TiO2, CeO2, and WO3, was elucidated by combining systematic characterization methods involving various in situ techniques, kinetic analysis, and density functional theory calculations. TiO2 and CeO2 were proven to be promising platforms for the synthesis of non-equilibrium RuNi binary solid solution alloy nanoparticles displaying a synergistic promotional effect in the hydrolysis of ammonia borane. Such behaviour was driven by the simultaneous reduction of both metal cations under a H2 atmosphere over TiO2 and CeO2, in which hydrogen spillover favorably occurred over their surfaces rather than within their bulk phases. Conversely, hydrogen atoms were found to preferentially migrate within the bulk prior to the surface over WO3. Thus, the reductions of both metal cations occurred individually on WO3, which resulted in the formation of segregated NPs with no activity enhancement. The hydrogen spillover pathway in typical reducible metal oxides, such as TiO2, CeO2, and WO3, was investigated by combining various in situ characterization techniques, kinetic analysis, and density functional theory calculations.![]()
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Affiliation(s)
- Kazuki Shun
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Kohsuke Mori
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Unit of Elements Strategy Initiative for Catalysts Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Suita, Osaka 565-0871, Japan
| | - Shinya Masuda
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Naoki Hashimoto
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yoyo Hinuma
- Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31, Midorigaoka, Ikeda, Osaka 563-8577, Japan
| | - Hisayoshi Kobayashi
- Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Hiromi Yamashita
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Unit of Elements Strategy Initiative for Catalysts Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, Suita, Osaka 565-0871, Japan
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Wang W, Zhang L, Kang Y, Yu F. Light-Excited Ag-Doped TiO 2-CoFe 2O 4 Heterojunction Applied to Toluene Gas Detection. Nanomaterials (Basel) 2021; 11:3261. [PMID: 34947609 DOI: 10.3390/nano11123261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/24/2021] [Accepted: 11/26/2021] [Indexed: 11/17/2022]
Abstract
(1) Background: Toluene gas is widely used in indoor decoration and industrial production, and it not only pollutes the environment but also poses serious health risks. (2) Methods: In this work, TiO2−CoFe2O4−Ag quaternary composite gas-sensing material was prepared using a hydrothermal method to detect toluene. (3) Results: The recombination of electron–hole pairs was suppressed, and the light absorption range was expanded after constructing a heterojunction and doping with Ag, according to ultraviolet–visible (UV–vis) diffuse reflectance spectra and photoluminescence spectroscopy. Moreover, in the detection range of toluene gas (3 ppm–50 ppm), the response value of TiO2−CoFe2O4−Ag increased from 2 to 15, which was much higher than that of TiO2−Ag (1.7) and CoFe2O4−Ag (1.7). In addition, the working temperature was reduced from 360 °C to 263 °C. Furthermore, its response/recovery time was 40 s/51 s, its limit of detection was as low as 10 ppb, and its response value to toluene gas was 3–7 times greater than that of other interfering gases under the same test conditions. In addition, the response value to 5 ppm toluene was increased from 3 to 5.5 with the UV wavelength of 395 nm–405 nm. (4) Conclusions: This is primarily due to charge flow caused by heterojunction construction, as well as metal sensitization and chemical sensitization of novel metal doping. This work is a good starting point for improving gas-sensing capabilities for the detection of toluene gas.
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Affiliation(s)
- Luka Pirker
- Solid State Physics Jozef Stefan Institute Jamova cesta 39 1000 Ljubljana Slovenia
| | - Bojana Višić
- Solid State Physics Jozef Stefan Institute Jamova cesta 39 1000 Ljubljana Slovenia
- Institute of Physics Belgrade University of Belgrade Pregrevica 118 11080 Belgrade Serbia
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Chia JY, Lertvanithphol T, Chaikeeree T, Seawsakul K, Thamrongsiripak N, Nakajima H, Songsiriritthigul P, Horprathum M, Nuntawong N. Work function alteration of the porous indium tin oxide nanorods film by electron beam irradiation technique. Radiat Phys Chem Oxf Engl 1993 2021. [DOI: 10.1016/j.radphyschem.2021.109664] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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14
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Yaqoob U, Younis MI. Chemical Gas Sensors: Recent Developments, Challenges, and the Potential of Machine Learning-A Review. Sensors (Basel) 2021; 21:2877. [PMID: 33923937 PMCID: PMC8073537 DOI: 10.3390/s21082877] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/13/2021] [Accepted: 04/15/2021] [Indexed: 02/04/2023]
Abstract
Nowadays, there is increasing interest in fast, accurate, and highly sensitive smart gas sensors with excellent selectivity boosted by the high demand for environmental safety and healthcare applications. Significant research has been conducted to develop sensors based on novel highly sensitive and selective materials. Computational and experimental studies have been explored in order to identify the key factors in providing the maximum active location for gas molecule adsorption including bandgap tuning through nanostructures, metal/metal oxide catalytic reactions, and nano junction formations. However, there are still great challenges, specifically in terms of selectivity, which raises the need for combining interdisciplinary fields to build smarter and high-performance gas/chemical sensing devices. This review discusses current major gas sensing performance-enhancing methods, their advantages, and limitations, especially in terms of selectivity and long-term stability. The discussion then establishes a case for the use of smart machine learning techniques, which offer effective data processing approaches, for the development of highly selective smart gas sensors. We highlight the effectiveness of static, dynamic, and frequency domain feature extraction techniques. Additionally, cross-validation methods are also covered; in particular, the manipulation of the k-fold cross-validation is discussed to accurately train a model according to the available datasets. We summarize different chemresistive and FET gas sensors and highlight their shortcomings, and then propose the potential of machine learning as a possible and feasible option. The review concludes that machine learning can be very promising in terms of building the future generation of smart, sensitive, and selective sensors.
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Affiliation(s)
| | - Mohammad I. Younis
- Department of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia;
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15
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She M, Wang Z, Chen J, Li Q, Liu P, Chen F, Zhang S, Li J. Design strategy and recent progress of fluorescent probe for noble metal ions (Ag, Au, Pd, and Pt). Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213712] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Jeong SY, Kim JS, Lee JH. Rational Design of Semiconductor-Based Chemiresistors and their Libraries for Next-Generation Artificial Olfaction. Adv Mater 2020; 32:e2002075. [PMID: 32930431 DOI: 10.1002/adma.202002075] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 05/05/2020] [Indexed: 05/18/2023]
Abstract
Artificial olfaction based on gas sensor arrays aims to substitute for, support, and surpass human olfaction. Like mammalian olfaction, a larger number of sensors and more signal processing are crucial for strengthening artificial olfaction. Due to rapid progress in computing capabilities and machine-learning algorithms, on-demand high-performance artificial olfaction that can eclipse human olfaction becomes inevitable once diverse and versatile gas sensing materials are provided. Here, rational strategies to design a myriad of different semiconductor-based chemiresistors and to grow gas sensing libraries enough to identify a wide range of odors and gases are reviewed, discussed, and suggested. Key approaches include the use of p-type oxide semiconductors, multinary perovskite and spinel oxides, carbon-based materials, metal chalcogenides, their heterostructures, as well as heterocomposites as distinctive sensing materials, the utilization of bilayer sensor design, the design of robust sensing materials, and the high-throughput screening of sensing materials. In addition, the state-of-the-art and key issues in the implementation of electronic noses are discussed. Finally, a perspective on chemiresistive sensing materials for next-generation artificial olfaction is provided.
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Affiliation(s)
- Seong-Yong Jeong
- Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Jun-Sik Kim
- 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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Staerz A, Somacescu S, Epifani M, Kida T, Weimar U, Barsan N. WO 3-Based Gas Sensors: Identifying Inherent Qualities and Understanding the Sensing Mechanism. ACS Sens 2020; 5:1624-1633. [PMID: 32270674 DOI: 10.1021/acssensors.0c00113] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Semiconducting metal oxide-based gas sensors are an attractive option for a wide array of applications. In particular, sensors based on WO3 are promising for applications varying from indoor air quality to breath analysis. There is a great breadth of literature which examines how the sensing characteristics of WO3 can be tuned via changes in, for example, morphology or surface additives. Because of variations in measurement conditions, however, it is difficult to identify inherent qualities of WO3 from these reports. Here, the sensing behavior of five different WO3 samples is examined. The samples show good complementarity to SnO2 (the most commonly used material)-based sensors. A surprising homogeneity, despite variation in morphology and preparation method, is found. Using operando diffuse reflectance infrared Fourier transform spectroscopy, it is found that the oxygen vacancies are the dominant reaction partner of WO3 with the analyte gas. This surface chemistry is offered as an explanation for the homogeneity of WO3-based sensors.
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Affiliation(s)
- Anna Staerz
- Institute for Physical and Theoretical Chemistry, Eberhard Karls University of Tuebingen, 72076 Tuebingen, Germany
| | - Simona Somacescu
- Ilie Murgulescu Institute of Physical Chemistry, Romanian Academy, Spl. Independentei 202, 060021 Bucharest, Romania
| | - Mauro Epifani
- Consiglio Nazionale delle Ricerche, Istituto per la Microelettronica ed i Microsistemi (C.N.R.−I.M.M.), Via Monteroni, 73100 Lecce, Italy
| | - Tetsuya Kida
- Faculty of Advanced Science and Technology, Kumamoto University, 860-8555 Kumamoto, Japan
| | - Udo Weimar
- Institute for Physical and Theoretical Chemistry, Eberhard Karls University of Tuebingen, 72076 Tuebingen, Germany
| | - Nicolae Barsan
- Institute for Physical and Theoretical Chemistry, Eberhard Karls University of Tuebingen, 72076 Tuebingen, Germany
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18
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David TM, Gnanasekar KI, Wilson P, Sagayaraj P, Mathews T. Effect of Ni, Pd, and Pt Nanoparticle Dispersion on Thick Films of TiO 2 Nanotubes for Hydrogen Sensing: TEM and XPS Studies. ACS Omega 2020; 5:11352-11360. [PMID: 32478223 PMCID: PMC7254529 DOI: 10.1021/acsomega.0c00292] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 03/09/2020] [Indexed: 06/11/2023]
Abstract
Crystal structure, morphological features, and hydrogen-sensing properties of thick film sensors of TiO2 nanotubes (NTs) impregnated with nanoparticles of elements of Group 10, viz., nickel, palladium, and platinum, having average grain size of about 25, 20, and 20 nm, respectively, are presented. The sensitivity is observed to be higher for Pd/TiO2 NTs than for Pt/TiO2 NTs. Ni/TiO2 NTs exhibited very poor sensitivity. X-ray photoelectron spectroscopy (XPS) studies confirm reduction of the oxide layer of palladium nanoparticles, which, in turn, is responsible for the generation of Ti3+ ion in TiO2 NTs through hydrogen spillover. For Pt/TiO2 NTs, only reduction of the oxide layer over Pt nanoparticles takes place without any spillover effect. For Ni/TiO2 NTs, neither NiO nor TiO2 undergoes any reduction. Changes in the Fermi level difference of PdO and TiO2 along with Ti3+ generation synergistically operate for Pd/TiO2 NTs, whereas the difference in Fermi levels of PtO and TiO2 alone operates for Pt/TiO2 NTs during sensing.
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Affiliation(s)
- T. Manovah David
- Thin Films and Coatings Section, Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, India
| | - K. I. Gnanasekar
- Novel Chemical Sensors Section, Materials
Chemistry and Metal Fuel Cycle Group, Indira
Gandhi Centre for Atomic Research, Kalpakkam 603102, India
| | - Paul Wilson
- Department of Chemistry, Madras Christian
College (Autonomous), Tambaram, Chennai 600059, India
| | - Pappu Sagayaraj
- Department of Physics, Loyola College (Autonomous), Nungambakkam, Chennai 600034, India
| | - Tom Mathews
- Thin Films and Coatings Section, Materials Science Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, India
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19
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Mounasamy V, Mani GK, Ponnusamy D, Tsuchiya K, Reshma PR, Prasad AK, Madanagurusamy S. Cadmium metavanadate mixed oxide nanorods for the chemiresistive detection of methane molecules. NEW J CHEM 2020. [DOI: 10.1039/d0nj02690e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
An energy band diagram of the V2O5–CdO thin film and illustration of the methane (CH4) gas sensing mechanism with band bending.
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Affiliation(s)
- Veena Mounasamy
- Functional Nanomaterials & Devices Lab
- Centre for Nanotechnology & Advanced Biomaterials and School of Electrical & Electronics Engineering
- SASTRA Deemed to be University
- Thanjavur 613 401
- India
| | | | | | - Kazuyoshi Tsuchiya
- Micro/Nano Technology Centre
- Tokai University
- Hiratsuka
- Japan
- Department of Precision Engineering
| | - P. R. Reshma
- Nanomaterials Characterization and Sensors Section
- Surface and Nanoscience Division
- Materials Science Group
- Indira Gandhi Centre for Atomic Research
- Homi Bhabha National Institute
| | - Arun K. Prasad
- Nanomaterials Characterization and Sensors Section
- Surface and Nanoscience Division
- Materials Science Group
- Indira Gandhi Centre for Atomic Research
- Homi Bhabha National Institute
| | - Sridharan Madanagurusamy
- Functional Nanomaterials & Devices Lab
- Centre for Nanotechnology & Advanced Biomaterials and School of Electrical & Electronics Engineering
- SASTRA Deemed to be University
- Thanjavur 613 401
- India
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20
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Li G, Wang X, Yan L, Wang Y, Zhang Z, Xu J. PdPt Bimetal-Functionalized SnO 2 Nanosheets: Controllable Synthesis and its Dual Selectivity for Detection of Carbon Monoxide and Methane. ACS Appl Mater Interfaces 2019; 11:26116-26126. [PMID: 31265225 DOI: 10.1021/acsami.9b08408] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Bimetallic nanoparticles (NPs) usually exhibit some novel properties due to the synergistic effects of the two distinct metals, which is expected to play an important role in the field of gas sensing. PdPt bimetal NPs with Pd-rich shell and Pt-rich core were successfully synthesized and used to modify SnO2 nanosheets. The 1P-PdPt/SnO2-A sensor obtained by self-assemblies of PdPt NPs exhibited temperature-dependent dual selectivity to CO at 100 °C and CH4 at 320 °C. Furthermore, the sensor possessed good long term stability and antihumidity interference. The activation energy of adsorption for CO and CH4 were estimated by the temperature-dependent response process modeled using Langmuir adsorption kinetics, which proved that the lower activation energy of adsorption corresponded to better sensing performance. The gas-sensing mechanism based on the diffusion depth of the tested gas in the sensing layer was discussed. The dramatically improved sensing performance could be ascribed to the high catalytic activity of PdPt bimetal, the electron sensitization of PdO, and Schottky barrier-type junctions at the interface between SnO2 and PdPt NPs. Our present results demonstrate that bimetal NPs with special structure and components can significantly improve the gas-sensing performance of metal oxide semiconductor and the obtained sensor has great potential in monitoring coal mine gas.
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Affiliation(s)
- Gaojie Li
- NEST lab, Department of Physics, Department of Chemistry, College of Science , Shanghai University , Shanghai 200444 , China
| | - Xiaohong Wang
- NEST lab, Department of Physics, Department of Chemistry, College of Science , Shanghai University , Shanghai 200444 , China
| | - Liuming Yan
- NEST lab, Department of Physics, Department of Chemistry, College of Science , Shanghai University , Shanghai 200444 , China
| | | | | | - Jiaqiang Xu
- NEST lab, Department of Physics, Department of Chemistry, College of Science , Shanghai University , Shanghai 200444 , China
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21
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Yan B, Bisbey RP, Alabugin A, Surendranath Y. Mixed Electron–Proton Conductors Enable Spatial Separation of Bond Activation and Charge Transfer in Electrocatalysis. J Am Chem Soc 2019; 141:11115-11122. [DOI: 10.1021/jacs.9b03327] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Bing Yan
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Ryan P. Bisbey
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Alexander Alabugin
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Yogesh Surendranath
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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22
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Zappa D. The Influence of Nb on the Synthesis of WO 3 Nanowires and the Effects on Hydrogen Sensing Performance. Sensors (Basel) 2019; 19:s19102332. [PMID: 31137592 PMCID: PMC6567310 DOI: 10.3390/s19102332] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 05/17/2019] [Accepted: 05/17/2019] [Indexed: 01/16/2023]
Abstract
Hydrogen sensing is becoming one of the hottest topics in the chemical sensing field, due to its wide number of applications and the dangerousness of hydrogen leakages. For this reason, research activities are focusing on the development of high-performance materials that can be easily integrated in sensing devices. In this work, we investigated the influence of Nb on the sensing performances of WO3 nanowires (NWs) synthetized by a low-cost thermal oxidation method. The morphology and the structure of these Nb-WO3 nanowires were investigated by field emission scanning electron microscope (FE-SEM), high-resolution transmission electron microscope (HR-TEM), X-ray diffraction (XRD), Raman and X-ray photoelectron (XPS) spectroscopies, confirming that the addition of Nb does not modify significantly the monoclinic crystal structure of WO3. Moreover, we integrated these NWs into chemical sensors, and we assessed their performances toward hydrogen and some common interfering compounds. Although the hydrogen sensing performances of WO3 nanowires were already excellent, thanks to the presence of Nb they have been further enhanced, reaching the outstanding value of more than 80,000 towards 500 ppm @ 200 °C. This opens the possibility of their integration in commercial equipment, like electronic noses and portable devices.
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Affiliation(s)
- Dario Zappa
- SENSOR Laboratory, Department of Information Engineering (DII), University of Brescia, Via Valotti 9, 25133 Brescia, Italy.
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23
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Li K, Zhang C, Liu A, Chu D, Zhang C, Yang P, Du Y, Huang J. Mesoporous tungsten oxide modified by nanolayered manganese-calcium oxide as robust photoanode for solar water splitting. J Colloid Interface Sci 2018; 516:145-52. [DOI: 10.1016/j.jcis.2018.01.053] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 01/12/2018] [Accepted: 01/12/2018] [Indexed: 11/17/2022]
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24
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Dai E, Wu S, Ye Y, Cai Y, Liu J, Liang C. Highly dispersed Au nanoparticles decorated WO 3 nanoplatelets: Laser-assisted synthesis and superior performance for detecting ethanol vapor. J Colloid Interface Sci 2017; 514:165-171. [PMID: 29253758 DOI: 10.1016/j.jcis.2017.11.081] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 11/27/2017] [Accepted: 11/29/2017] [Indexed: 11/18/2022]
Abstract
Loading of noble metal nanoparticles (NPs) on the surfaces of semiconductor oxides to form a hybrid nanostructure is an effective strategy to improve gas-sensing performance. In this study, WO3 nanoplatelets decorated with Au NPs were prepared by laser ablation in liquids (LAL) with subsequent aging and annealing treatments. Results indicated that Au NPs with an average size of 7.8 ± 2.5 nm were highly dispersed on the surface of WO3 nanoplatelets. As gas-sensing materials, the obtained Au-decorated WO3 nanoplatelets showed lower operating temperature of 320 °C and higher response value of 3.5-fold in detecting ethanol molecules compared with pure WO3 nanoplatelets. Moreover, Au-decorated WO3 nanoplatelets displayed good selectivity toward ethanol compared with other tested vapors and excellent stability within several cycled measurements. These results can be ascribed to the supported Au NPs, which promote the adsorption and dissociation of oxygen species, eventually resulting in accelerated electron depletion on the surface of Au-WO3 hybrids.
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Affiliation(s)
- Enmei Dai
- Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China; Information Center, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
| | - Shouliang Wu
- Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - Yixing Ye
- Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - Yunyu Cai
- Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - Jun Liu
- Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China.
| | - Changhao Liang
- Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China
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25
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Abstract
Hydrogen gas sensing properties of Pt-WO3 films on spiral microstructured fiber Bragg grating (FBG) has been demonstrated. Pt-WO3 film was prepared by hydrothermal method. The spiral microsturctured FBG was fabricated using femtosecond laser. Spiral microstructure FBG hydrogen sensor can detect hydrogen concentration from 0.02% H2 to 4% H2 at room temperature, and the response time is shortened from a few minutes to 10~30 s. Double spiral microstructure at pitch 60 μm and sputtered with 2 μm Pt-WO3 film recorded hydrogen sensitivity of 522 pm/%(v/v) H2 responding to hydrogen gas in air. This translated to approximately 2~4 times higher than the unprocessed standard FBG. The humidity has little effect on the sensing property. The sensor has fast response time, good stability, large detection range and has the good prospect of practical application for hydrogen leak detection.
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26
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Abstract
In this study, a new kind of metal oxide nanoflower has been controllably synthesized on pre-designed regions of a substrate by a metal-seed planting method, in which the nanoflowers only appear where the metal seeds are planted.
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Affiliation(s)
- Jianyi Luo
- Laboratory of Optoelectronic Materials and Devices
- School of Applied Physics and Materials
- Wuyi University
- Jiangmen
- P. R. China
| | - Yudong Li
- Laboratory of Optoelectronic Materials and Devices
- School of Applied Physics and Materials
- Wuyi University
- Jiangmen
- P. R. China
| | - Xiwei Mo
- Laboratory of Optoelectronic Materials and Devices
- School of Applied Physics and Materials
- Wuyi University
- Jiangmen
- P. R. China
| | - Youxin Xu
- Laboratory of Optoelectronic Materials and Devices
- School of Applied Physics and Materials
- Wuyi University
- Jiangmen
- P. R. China
| | - Qingguang Zeng
- Laboratory of Optoelectronic Materials and Devices
- School of Applied Physics and Materials
- Wuyi University
- Jiangmen
- P. R. China
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27
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Abstract
FESEM surface morphology and the schematic view of the Pd/WO3–ZnO composite sensor with Ag paste contacts.
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Affiliation(s)
- Arvind Kumar
- Nanoscience Laboratory
- Institute Instrumentation Centre
- Indian Institute of Technology Roorkee
- Roorkee 247667
- India
| | - Amit Sanger
- Nanoscience Laboratory
- Institute Instrumentation Centre
- Indian Institute of Technology Roorkee
- Roorkee 247667
- India
| | - Ashwani Kumar
- Nanoscience Laboratory
- Institute Instrumentation Centre
- Indian Institute of Technology Roorkee
- Roorkee 247667
- India
| | - Ramesh Chandra
- Nanoscience Laboratory
- Institute Instrumentation Centre
- Indian Institute of Technology Roorkee
- Roorkee 247667
- India
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28
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Abstract
We present a facile one-pot wet chemical strategy for the synthesis of monodispersed W17O47 nanoneedles, of which the synthetic conditions and photothermal properties are systematically investigated.
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Affiliation(s)
- Lili Lu
- State Key Laboratory of Chemical Resource Engineering
- Beijing Key Laboratory of Environmentally Harmful Chemical Analysis
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Suying Xu
- State Key Laboratory of Chemical Resource Engineering
- Beijing Key Laboratory of Environmentally Harmful Chemical Analysis
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Jiabin Cui
- State Key Laboratory of Chemical Resource Engineering
- Beijing Key Laboratory of Environmentally Harmful Chemical Analysis
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Leyu Wang
- State Key Laboratory of Chemical Resource Engineering
- Beijing Key Laboratory of Environmentally Harmful Chemical Analysis
- Beijing University of Chemical Technology
- Beijing 100029
- China
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29
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Bünting A, Uhlenbruck S, Sebold D, Buchkremer HP, Vaßen R. Three-Dimensional, Fibrous Lithium Iron Phosphate Structures Deposited by Magnetron Sputtering. ACS Appl Mater Interfaces 2015; 7:22594-22600. [PMID: 26381359 DOI: 10.1021/acsami.5b07090] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Crystalline, three-dimensional (3D) structured lithium iron phosphate (LiFePO4) thin films with additional carbon are fabricated by a radio frequency (RF) magnetron-sputtering process in a single step. The 3D structured thin films are obtained at deposition temperatures of 600 °C and deposition times longer than 60 min by using a conventional sputtering setup. In contrast to glancing angle deposition (GLAD) techniques, no tilting of the substrate is required. Thin films are characterized by X-ray diffraction (XRD), Raman spectrospcopy, scanning electron microscopy (SEM), cyclic voltammetry (CV), and galvanostatic charging and discharging. The structured LiFePO4+C thin films consist of fibers that grow perpendicular to the substrate surface. The fibers have diameters up to 500 nm and crystallize in the desired olivine structure. The 3D structured thin films have superior electrochemical properties compared with dense two-dimensional (2D) LiFePO4 thin films and are, hence, very promising for application in 3D microbatteries.
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Affiliation(s)
- Aiko Bünting
- Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), Forschungszentrum Jülich GmbH , 52425 Jülich, Germany
| | - Sven Uhlenbruck
- Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), Forschungszentrum Jülich GmbH , 52425 Jülich, Germany
| | - Doris Sebold
- Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), Forschungszentrum Jülich GmbH , 52425 Jülich, Germany
| | - H P Buchkremer
- Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), Forschungszentrum Jülich GmbH , 52425 Jülich, Germany
| | - R Vaßen
- Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), Forschungszentrum Jülich GmbH , 52425 Jülich, Germany
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30
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Huang ZF, Song J, Pan L, Zhang X, Wang L, Zou JJ. Tungsten Oxides for Photocatalysis, Electrochemistry, and Phototherapy. Adv Mater 2015; 27:5309-27. [PMID: 26287959 DOI: 10.1002/adma.201501217] [Citation(s) in RCA: 221] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Revised: 05/21/2015] [Indexed: 05/08/2023]
Abstract
The conversion, storage, and utilization of renewable energy have all become more important than ever before as a response to ever-growing energy and environment concerns. The performance of energy-related technologies strongly relies on the structure and property of the material used. The earth-abundant family of tungsten oxides (WOx ≤3 ) receives considerable attention in photocatalysis, electrochemistry, and phototherapy due to their highly tunable structures and unique physicochemical properties. Great breakthroughs have been made in enhancing the optical absorption, charge separation, redox capability, and electrical conductivity of WOx ≤3 through control of the composition, crystal structure, morphology, and construction of composite structures with other materials, which significantly promotes the efficiency of processes and devices based on this material. Herein, the properties and synthesis of WOx ≤3 family are reviewed, and then their energy-related applications are highlighted, including solar-light-driven water splitting, CO2 reduction, and pollutant removal, electrochromism, supercapacitors, lithium batteries, solar and fuel cells, non-volatile memory devices, gas sensors, and cancer therapy, from the aspect of function-oriented structure design and control.
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Affiliation(s)
- Zhen-Feng Huang
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
| | - Jiajia Song
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
| | - Lun Pan
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
| | - Xiangwen Zhang
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
| | - Li Wang
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
| | - Ji-Jun Zou
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- Collaborative Innovative Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
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