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Ravikumar T, Thirumalaisamy L, Madanagurusamy S, Kalainathan S. Manganese doped two-dimensional zinc ferrite thin films as chemiresistive trimethylamine gas sensors. Phys Chem Chem Phys 2023; 25:32216-32233. [PMID: 37987656 DOI: 10.1039/d3cp03867j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Trimethylamine (TMA) is highly toxic and can have lethal effects on living organisms. Detecting the presence of TMA in air is very important because, if the TMA level exceeds the OSHA (Occupational Safety and Health Administration) limit, it may harm the environment and endanger human life. Doping is an appropriate flexible way to change the electrical structures of metal oxide semiconductors (MOSs) and improve their ability to detect toxic gases. In this work, Mn-doped zinc ferrite thin film nanorods with agglomerated morphology were fabricated by a spray pyrolysis technique. For the first time, a comprehensive investigation was done on the gas sensing capabilities of Mn-doped ZnFe2O4 thin films. The findings showed that ZFM1 had the best gas sensing characteristics, with high sensitivity (S = 6.24), good selectivity, and quick recovery, towards 10 ppm TMA at ambient temperature. The alternate Mn-ZF sites are responsible for the rapid recovery because they can significantly increase the concentration of oxygen vacancies in the ZF crystal. 0.1 Mn doped ZnFe2O4 (ZFM1) thin film exhibits greatly enhanced gas sensing properties towards TMA, because of its high surface-to-volume ratio and rough surface with a small nanorod structure. The sensor's response to 10 ppm TMA was measured 13 weeks later for stability testing. The stability test results show that the coated ZFM1 film works well as a TMA gas sensor. This work shows that ZF thin films are effective in detecting TMA in the atmosphere.
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Affiliation(s)
- Thangavel Ravikumar
- Centre for Nanotechnology Research, Vellore Institute of Technology, Vellore, India.
- School of Advanced Sciences, Vellore Institute of Technology, Vellore, India
| | - Logu Thirumalaisamy
- Dept. Of Physics, G. T. N. Arts College (Affiliated to Madurai Kamaraj University), Dindigul, India
| | - Sridharan Madanagurusamy
- Functional Nanomaterials & Devices Lab, Centre for Nanotechnology & Advanced Biomaterials and School of Electrical & Electronics Engineering, SASTRA Deemed to be University, Thanjavur, India
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Al-Farsi L, Souier TM, Al-Hinai M, Myint MTZ, Kyaw HH, Widatallah HM, Al-Abri M. pH Controlled Nanostructure and Optical Properties of ZnO and Al-Doped ZnO Nanorod Arrays Grown by Microwave-Assisted Hydrothermal Method. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3735. [PMID: 36364511 PMCID: PMC9655615 DOI: 10.3390/nano12213735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Revised: 10/19/2022] [Accepted: 10/20/2022] [Indexed: 06/16/2023]
Abstract
The low-temperature microwave-assisted hydrothermal method was used to successfully grow pure and Al-doped ZnO (AZO) nanorod (NR) arrays on glass substrates. The combined effects of doping and pH on the structural properties, surface chemistry, and optical properties of all samples were investigated. Thermodynamic-based simulations of the growth solution were performed and a growth mechanism, that considers the effects of both the pH and Al-doping, is proposed, and discussed. Tuning the solution pH is key parameter to grow well-aligned, single crystal, highly packed, and high aspect ratio nanorod arrays. Moreover, the optical absorption in the visible range is enhanced by controlling the pH value. The PL spectra reveal a shift of the main radiative emission from the band-to-band into a transition involving deep defect levels of Zinc interstitial Zni. This shift is caused by an enhancement of the non-radiative components (phonon relaxation) at high pH values. The production of well-ordered ZnO and AZO nanorod arrays with visible-active absorption/emission centers would increase their potential use in various applications.
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Affiliation(s)
- Lamia Al-Farsi
- Department of Physics, College of Science, Sultan Qaboos University, Muscat P.O. Box 36, Oman
| | - Tewfik M. Souier
- Department of Physics, College of Science, Sultan Qaboos University, Muscat P.O. Box 36, Oman
| | - Muna Al-Hinai
- Department of Process Engineering, International Maritime College Oman, Sohar P.O. Box 532, Oman
| | - Myo T. Z. Myint
- Department of Physics, College of Science, Sultan Qaboos University, Muscat P.O. Box 36, Oman
| | - Htet H. Kyaw
- Nanotechnology Research Center, Sultan Qaboos University, Muscat P.O. Box 17, Oman
| | - Hisham M. Widatallah
- Department of Physics, College of Science, Sultan Qaboos University, Muscat P.O. Box 36, Oman
| | - Mohammed Al-Abri
- Nanotechnology Research Center, Sultan Qaboos University, Muscat P.O. Box 17, Oman
- Department of Petroleum and Chemical Engineering, College of Engineering, Sultan Qaboos University, Muscat P.O. Box 33, Oman
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Zhao C, Shen J, Xu S, Wei J, Liu H, Xie S, Pan Y, Zhao Y, Zhu Y. Ultra-efficient trimethylamine gas sensor based on Au nanoparticles sensitized WO3 nanosheets for rapid assessment of seafood freshness. Food Chem 2022; 392:133318. [DOI: 10.1016/j.foodchem.2022.133318] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 04/29/2022] [Accepted: 05/24/2022] [Indexed: 11/04/2022]
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Arafat MM, Rozali S, Haseeb ASMA, Ibrahim S. Direct and catalyst-free synthesis of ZnO nanowires on brass by thermal oxidation. NANOTECHNOLOGY 2020; 31:175603. [PMID: 31918416 DOI: 10.1088/1361-6528/ab69b3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this research work, nanowires were grown on brass (Cu - 37.2 wt% Zn) substrate by thermal oxidation. The substrate was oxidized at temperatures ranging from 350 °C to 600 °C in the presence of varying concentrations of O2 (1%-100%) in N2 flown at a rate of 200 sccm. The oxidized brass surface was characterized by field emission scanning electron microscope equipped with energy dispersive x-ray spectroscope and transmission electron microscope. Four different types of morphological variations such as thin, thick with branches, circular-flake and flat-cone shape nanostructures were observed during oxidation at different conditions. However, the prevalence of thin and thick morphology with branches was more prominent and found in all growth conditions. The length and diameter of the nanowires varied from 1 to 30 μm and 50 to 500 nm, respectively, whereas the length of the branches varied from 1 to 3 μm. The composition of the nanowires was ZnO possessing of hexagonal wurtzite structure. The selected area diffraction confirms that the nanowires grew along 〈1 1 [Formula: see text] 0〉 directions. Based on the results, a stress induced mechanism is proposed for the growth of ZnO nanowires on Cu - 37.2 wt% Zn substrate.
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Zhang F, Dong X, Cheng X, Xu Y, Zhang X, Huo L. Enhanced Gas-Sensing Properties for Trimethylamine at Low Temperature Based on MoO 3/Bi 2Mo 3O 12 Hollow Microspheres. ACS APPLIED MATERIALS & INTERFACES 2019; 11:11755-11762. [PMID: 30848120 DOI: 10.1021/acsami.8b22132] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Most reported trimethylamine (TMA) sensors have to operate at high temperature, which will consume energy highly. To detect TMA at low temperature, it is necessary to modify the existing materials or develop new materials. In this paper, the sensor based on MoO3/Bi2Mo3O12 hollow microspheres can work at low operating temperature of 170 °C, which were prepared via a simple solvothermal route. The phase and morphology of the product were characterized by an X-ray diffraction meter, a scanning electron microscope and a transmission electron microscope. The surface chemistry of the MoO3/Bi2Mo3O12 sensor was studied with an X-ray photoelectron spectroscope to investigate the TMA sensing mechanism. The MoO3/Bi2Mo3O12 sensor ( S = 25.8) had a higher response to 50 ppm TMA than those of MoO3 hollow spheres ( S = 10.8) and Bi2Mo3O12 sensors ( S = 4.8) at 170 °C. In contrast to the pure MoO3 and Bi2Mo3O12 sensors, the MoO3/Bi2Mo3O12 sensor exhibited an obviously enhanced gas-sensing property for TMA, which might be due to the heterostructure formed between MoO3 and Bi2Mo3O12 and the hollow morphology. It is the first time for MoO3/Bi2Mo3O12 to apply in gas sensors, which might take an important step in the application of MoO3/Bi2Mo3O12 or Bi2Mo3O12 in the field of gas sensing.
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Affiliation(s)
- Fangdou Zhang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science , Heilongjiang University , Harbin 150080 , China
| | - Xin Dong
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science , Heilongjiang University , Harbin 150080 , China
| | - Xiaoli Cheng
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science , Heilongjiang University , Harbin 150080 , China
| | - Yingming Xu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science , Heilongjiang University , Harbin 150080 , China
| | - Xianfa Zhang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science , Heilongjiang University , Harbin 150080 , China
| | - Lihua Huo
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science , Heilongjiang University , Harbin 150080 , China
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San X, Liu D, Wang G, Shen Y, Meng D, Meng F. Investigation on Trimethylamine Sensing Performance of PdO‐Decorated ZnO Flower‐Like Structures Synthesized by One‐ Step Hydrothermal Method. ChemistrySelect 2019. [DOI: 10.1002/slct.201803744] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xiaoguang San
- College of Chemical EngineeringShenyang University of Chemical Technology Shenyang Liaoning 110142 China
| | - Dongyu Liu
- College of Chemical EngineeringShenyang University of Chemical Technology Shenyang Liaoning 110142 China
| | - Guosheng Wang
- College of Chemical EngineeringShenyang University of Chemical Technology Shenyang Liaoning 110142 China
| | - Yanbai Shen
- College of Resources and Civil Engineering, Northeastern University Shenyang Liaoning 110819 China
| | - Dan Meng
- College of Chemical EngineeringShenyang University of Chemical Technology Shenyang Liaoning 110142 China
| | - Fanli Meng
- College of Information Science and EngineeringNortheastern University Shenyang Liaoning 110819 China
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Thi L, Pung S, Sreekantan S, Matsuda A, Phu H. Assessment of Rhodamine B Dye Removal by ZnO Nanodisks under Visible Light. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1742-6596/1082/1/012045] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Design of Cr2O3@ZnO Hetero-junction Hierarchical Nanostructures with Enhanced Xylene-sensing Properties. Chem Res Chin Univ 2018. [DOI: 10.1007/s40242-018-7237-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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