DOI: 10.1016/j.aca.2020.01.060
论文题名: Investigation on CH4 sensing characteristics of hierarchical V2O5 nanoflowers operated at relatively low temperature using chemiresistive approach
作者: Mounasamy V. ; Mani G.K. ; Ponnusamy D. ; Tsuchiya K. ; Reshma P.R. ; Prasad A.K. ; Madanagurusamy S.
刊名: Analytica Chimica Acta
ISSN: 32670
出版年: 2020
卷: 1106 语种: 英语
英文关键词: CH4
; Gas sensor
; Hierarchical nanostructures
; Sputtering
; Thin film
; V2O5
Scopus关键词: Binding energy
; Chemical sensors
; Enamels
; Field emission microscopes
; Gas detectors
; Global warming
; Greenhouse gases
; Nanostructures
; Scanning electron microscopy
; Spectrum analysis
; Sputtering
; Temperature
; Textures
; Thin films
; Vanadium pentoxide
; X ray photoelectron spectroscopy
; Adsorption and desorptions
; Field emission scanning electron microscopy
; Hierarchical Nanostructures
; Operating temperature
; Polycrystalline structure
; Sensing characteristics
; Structural characteristics
; V2O5
; High resolution transmission electron microscopy
; methane
; nanoflower
; nanomaterial
; unclassified drug
; vanadium pentoxide
; adsorption kinetics
; Article
; climate change
; concentration (parameter)
; desorption
; environmental monitoring
; greenhouse effect
; high resolution transmission electron microscopy
; hydrogen bond
; low temperature
; molecular stability
; nonhuman
; oxidation reduction state
; plant growth
; priority journal
; Raman spectrometry
; sensitivity analysis
; stoichiometry
; X ray photoemission spectroscopy
英文摘要: Methane (CH4) gas, the second most potent greenhouse gas share a substantial role in contributing to the global warming and it is a necessary pre-requisite to detect the release of CH4 into the environment at its early stage to combat climate change. In that front, this work is focussed to develop an effective CH4 gas sensor using vanadium pentoxide (V2O5) thin films that works at an operating temperature of ∼100 °C. To understand the effect of sputtering power towards the structural characteristics of V2O5 films, X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HR-TEM) analysis were performed from which the orthorhombic polycrystalline structure of V2O5 thin films was confirmed with varied texture co-efficient. Further, the surface elemental studies using X-ray photoelectron spectroscopy (XPS) confirmed the prominence of V+5 oxidation state from the binding energy of V2p3/2 and O1s peak. The effect of sputtering power on the growth of different nanostructures were observed using field-emission scanning electron microscopy (FE-SEM). The critical role of adsorption and desorption kinetics of the deposited nanostructures were explained through first order kinetics based on Elovich model and the phase stability of different nanostructures were evaluated using Raman spectral analysis. This work achieved the sensor response of about ∼8% towards CH4 at an operating temperature of 100 °C towards 50 ppm concentration. © 2020 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158383
Appears in Collections: 气候变化与战略
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作者单位: Functional Nanomaterials & Devices Lab, Centre for Nanotechnology & Advanced Biomaterials, School of Electrical & Electronics Engineering, SASTRA Deemed to be University, Thanjavur, 613 401, India; Micro/Nano Technology Centre (MNTC), Tokai University, 4-1-1 Kitakaname, Hiratsuka, Kanagawa 259-1292, Japan; Department of Precision Engineering, Tokai University, 4-1-1 Kitakaname, Hiratsuka, Kanagawa 259-1292, Japan; Nanomaterials Characterization and Sensors Section, Surface and Nanoscience Division, Materials Science Group, Indira Gandhi Centre for Atomic Research, Homi Bhabha National Institute, Kalpakkam, 603102, India
Recommended Citation:
Mounasamy V.,Mani G.K.,Ponnusamy D.,et al. Investigation on CH4 sensing characteristics of hierarchical V2O5 nanoflowers operated at relatively low temperature using chemiresistive approach[J]. Analytica Chimica Acta,2020-01-01,1106