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Huang JY, Li HJ, Li LX, Chen R, Liu F, Wu L, Feng ZM, Yin YL, Cao Z, Yu D. Sensitive detection of H 2S based on Ce doped ZnCo 2O 4 hollow microspheres at low working temperature. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:4644-4652. [PMID: 38946403 DOI: 10.1039/d4ay00567h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
In order to develop a highly efficient H2S gas sensor at low working temperature, in this work, a kind of novel Ce-doped ZnCo2O4 hollow microspheres (Ce/ZnCo2O4 HMSs) were successfully synthesized using a template-free one-pot method, showing a sensitive response toward H2S. The microstructure and morphology of the material were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The gas-sensing performance of the composite was investigated, showing that the ZnCo2O4 doped with 6 mol% Ce had the highest response to 20 ppm H2S at a low operating temperature of 160 °C with a response value of 67.42, which was about 2 times higher than that of original ZnCo2O4. The prepared Ce/ZnCo2O4 HMS sensor in response to H2S exhibited a linear range of 0.1-200 ppm with a low detection limit of 0.1 ppm under the conditions of ambient humidity of 45% and ambient temperature of 20 °C. Meanwhile, it also possessed good selectivity, repeatability and reproducibility. The response value of the sensor decreased by 5.32% after 7 months of continuous monitoring of H2S in an atmospheric environment of a pig farm, indicating that the sensor had a long-term stability and continuous service life with important application prospects.
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Affiliation(s)
- Jia-Ying Huang
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China.
| | - Hao-Jun Li
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China.
| | - Lin-Xuan Li
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China.
| | - Rong Chen
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China.
| | - Fang Liu
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China.
| | - Ling Wu
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China.
| | - Ze-Meng Feng
- Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
| | - Yu-Long Yin
- Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
| | - Zhong Cao
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China.
| | - Donghong Yu
- Department of Chemistry and Bioscience, Aalborg University, DK-9220 Aalborg, East, Denmark.
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Luo KH, Yan M, Hung YH, Kuang JY, Chang HC, Lai YJ, Yeh JM. Polyaniline Composites Containing Eco-Friendly Biomass Carbon from Agricultural-Waste Coconut Husk for Enhancing Gas Sensor Performance in Hydrogen Sulfide Detection. Polymers (Basel) 2023; 15:4554. [PMID: 38232031 PMCID: PMC10708403 DOI: 10.3390/polym15234554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 11/24/2023] [Accepted: 11/25/2023] [Indexed: 01/19/2024] Open
Abstract
Hydrogen sulfide, a colorless, flammable gas with a distinct rotten egg odor, poses severe health risks in industrial settings. Sensing hydrogen sulfide is crucial for safeguarding worker safety and preventing potential accidents. This study investigated the gas-sensing performance of an electroactive polymer (i.e., polyaniline, PANI) and its composites with active carbon (AC) (i.e., PANI-AC1 and PANI-AC3) toward H2S at room temperature. PANI-AC composites-coated IDE gas sensors were fabricated and their capability of detecting H2S at concentrations ranging from 1 ppm to 30 ppm was tested. The superior gas-sensing performance of the PANI-AC composites can be attributed to the increased surface area of the materials, which provided increased active sites for doping processes and enhanced the sensing capability of the composites. Specifically, the incorporation of AC in the PANI matrix resulted in a substantial improvement in the doping process, which led to stronger gas-sensing responses with higher repeatability and higher stability toward H2S compared to the neat PANI-coated IDE sensor. Furthermore, the as-prepared IDE gas sensor exhibited the best sensing response toward H2S at 60% RH. The use of agricultural-waste coconut husk for the synthesis of these high-performance gas-sensing materials promotes sustainable and eco-friendly practices while improving the detection and monitoring of H2S gas in industrial settings.
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Affiliation(s)
- Kun-Hao Luo
- Department of Chemistry, Chung Yuan Christian University, Chung Li District‚ Taoyuan City 32023, Taiwan
| | - Minsi Yan
- Department of Chemistry, Chung Yuan Christian University, Chung Li District‚ Taoyuan City 32023, Taiwan
| | - Yu-Han Hung
- Department of Chemistry, Chung Yuan Christian University, Chung Li District‚ Taoyuan City 32023, Taiwan
| | - Jia-Yu Kuang
- Department of Chemistry, Chung Yuan Christian University, Chung Li District‚ Taoyuan City 32023, Taiwan
| | - Hsing-Chih Chang
- Department of Chemistry, Chung Yuan Christian University, Chung Li District‚ Taoyuan City 32023, Taiwan
| | - Ying-Jang Lai
- Department of Food Science, National Quemoy University, Jinning Township, Kinmen County 89250, Taiwan
| | - Jui-Ming Yeh
- Department of Chemistry, Chung Yuan Christian University, Chung Li District‚ Taoyuan City 32023, Taiwan
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Schiopu AG, Oproescu M, Iana VG, Ducu CM, Moga SG, Vîlcoci DS, Cîrstea G, Calinescu VM, Ahmed O. Synthesis and Characterization of ZnO-Nanostructured Particles Produced by Solar Ablation. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6417. [PMID: 37834554 PMCID: PMC10573445 DOI: 10.3390/ma16196417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 09/21/2023] [Accepted: 09/25/2023] [Indexed: 10/15/2023]
Abstract
Nowadays, nanotechnology offers opportunities to create new features and functions of emerging materials. Correlation studies of nanostructured materials' development processes with morphology, structure, and properties represent one of the most important topics today due to potential applications in all fields: chemistry, mechanics, electronics, optics, medicine, food, or defense. Our research was motivated by the fact that in the nanometric domain, the crystalline structure and morphology are determined by the elaboration mechanism. The objective of this paper is to provide an introduction to the fundamentals of nanotechnology and nanopowder production using the sun's energy. Solar energy, as part of renewable energy sources, is one of the sources that remain to be exploited in the future. The basic principle involved in the production of nanopowders consists of the use of a solar energy reactor concentrated on sintered targets made of commercial micropowders. As part of our study, for the first time, we report the solar ablation synthesis and characterization of Ni-doped ZnO performed in the CNRS-PROMES laboratory, UPR 8521, a member of the CNRS (French National Centre for Scientific Research). Also, we study the effect of the elaboration method on structural and morphological characteristics of pure and doped ZnO nanoparticles determined by XRD, SEM, and UV-Vis.
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Affiliation(s)
- Adriana-Gabriela Schiopu
- Faculty of Mechanics and Technology, National University of Science and Technology POLITEHNICA Bucharest—Pitești University Centre, Targu din Vale, No. 1, 110040 Pitesti, Romania;
| | - Mihai Oproescu
- Faculty of Electronics, Communication and Computers, National University of Science and Technology POLITEHNICA Bucharest—Pitești University Centre, Targu din Vale, No. 1, 110040 Pitesti, Romania;
| | - Vasile Gabriel Iana
- Faculty of Electronics, Communication and Computers, National University of Science and Technology POLITEHNICA Bucharest—Pitești University Centre, Targu din Vale, No. 1, 110040 Pitesti, Romania;
| | - Catalin Marian Ducu
- Faculty of Mechanics and Technology, National University of Science and Technology POLITEHNICA Bucharest—Pitești University Centre, Targu din Vale, No. 1, 110040 Pitesti, Romania;
- Regional Center of Research & Development for Materials, Processes and Innovative Products Dedicated to the Automotive Industry (CRCD-AUTO), National University of Science and Technology POLITEHNICA Bucharest—Pitești University Centre, Targu din Vale, No. 1, 110040 Pitesti, Romania; (S.G.M.); (G.C.)
| | - Sorin Georgian Moga
- Regional Center of Research & Development for Materials, Processes and Innovative Products Dedicated to the Automotive Industry (CRCD-AUTO), National University of Science and Technology POLITEHNICA Bucharest—Pitești University Centre, Targu din Vale, No. 1, 110040 Pitesti, Romania; (S.G.M.); (G.C.)
| | - Denisa Stefania Vîlcoci
- Regional Center of Research & Development for Materials, Processes and Innovative Products Dedicated to the Automotive Industry (CRCD-AUTO), National University of Science and Technology POLITEHNICA Bucharest—Pitești University Centre, Targu din Vale, No. 1, 110040 Pitesti, Romania; (S.G.M.); (G.C.)
| | - Georgiana Cîrstea
- Regional Center of Research & Development for Materials, Processes and Innovative Products Dedicated to the Automotive Industry (CRCD-AUTO), National University of Science and Technology POLITEHNICA Bucharest—Pitești University Centre, Targu din Vale, No. 1, 110040 Pitesti, Romania; (S.G.M.); (G.C.)
| | - Valentin Marian Calinescu
- Interdisciplinary Doctoral School, National University of Science and Technology POLITEHNICA Bucharest—Pitești University Centre, Targu din Vale, No. 1, 110040 Pitesti, Romania; (V.M.C.); (O.A.)
| | - Omar Ahmed
- Interdisciplinary Doctoral School, National University of Science and Technology POLITEHNICA Bucharest—Pitești University Centre, Targu din Vale, No. 1, 110040 Pitesti, Romania; (V.M.C.); (O.A.)
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