LPG Gas Sensing Performance of Nanostructured CdSnO3 Thin Films

Nanostructured CdSnO3 thin films were prepared by spray pyrolysis technique. The nanostructured CdSnO3 film showed selectivity for LPG gas over other conventional gases. The maximum LPG response of 1460 for the sample S2 at 350 °C was achieved. The quick response (TResponse = 5 s) and fast recovery (TRecovery = 11 s) are the main features of this film. Additionally, the stability of the prepared sensor has been studied. As prepared thin films were studied using XRD, FE-SEM, and EDAX to know crystal structure, surface morphology, and elemental composition, respectively. The results are discussed and interpreted.

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Nanostructured ZrO2 Thin Films Deposited by Spray Pyrolysis Techniques for Ammonia Gas Sensing Application

International Letters of Chemistry Physics and Astronomy ◽

10.18052/www.scipress.com/ilcpa.56.120 ◽

2015 ◽

Vol 56 ◽

pp. 120-130 ◽

Cited By ~ 4

Author(s):

S.B. Deshmukh ◽

R.H. Bari

Keyword(s):

Thin Films ◽

Grain Size ◽

Surface Morphology ◽

Spray Pyrolysis ◽

Gas Sensing ◽

Spray Pyrolysis Technique ◽

Film Surface ◽

Ammonia Gas ◽

Water Solvent ◽

Average Grain Size

The spray pyrolysis deposition technique has number of advantages to produce advance nanostructured oxide films. The film surface morphology and structure depends on the precursor and doping solution and solvents used with their optimized parameters. The surface to volume ratio is achieved is beneficial to gas sensing. Therefore in this paper we report the nanostructured ZrO2 thin films was prepared using spray pyrolysis technique for ammonia gas sensing. There is various precursors such as Zirconium acetylacetonate, Zirconium nitrate, Zirconium tetra chloride etc. In spite of them, the Zirconium oxychloride octohydrate (0.05 M) was chosen as precursor solution and was prepared by dissolving in pure distilled water (Solvent). The films were deposited on heated glass substrate at 350◦C and were annealed at 500◦C for 1 hrs. It was characterized using XRD, FESEM, and TEM technique to examine crystal structure, surface morphology and microstructure properties. The average crystallite and grain size observed to be nanostructured in nature. The different test target gas performances were tested with various concentrations at different operating temperature. The films sprayed for 20 min with optimized spray parameter were observed to be most sensitive (S=58.5) to NH3 for 500 ppm at 150°C. The film thickness dependence parameters: FWHM (0.02678 radians) for peak 111, Inter-planer distance (d=0.2958 nm), lattice parameters Inter-atomic spacing ( a=0.511 nm), atomic volume(a3= 133Å3 ),micro strain (2.8 to 0.76 x 10-2), crystallite size (4-5nm) average grain size (32nm), dislocation density (1.73 x1015 lines/cm2), texture coefficient (>1), specific surface area(31 m2/g), activation energy and band gap were studied. The sensor shows quick response (4 s) and fast recovery (10 s). Reported results are discussed and interpreted

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Effect of Ho doping on the crystal structure, surface morphology and magnetic property of BiFeO3 thin films prepared via the sol-gel technology

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2018.10.112 ◽

2019 ◽

Vol 775 ◽

pp. 59-62 ◽

Cited By ~ 4

Author(s):

Pugeng Hou ◽

Bao Liu ◽

Zhendong Guo ◽

Pengyu Zhou ◽

Bo Wang ◽

...

Keyword(s):

Crystal Structure ◽

Thin Films ◽

Magnetic Property ◽

Surface Morphology ◽

Sol Gel ◽

Bifeo3 Thin Films ◽

Structure Surface

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Preparation, Characterization, and H2S Sensing Performance of Sprayed Nanostructured SnO2 Thin Films

ISRN Nanotechnology ◽

10.5402/2012/734325 ◽

2012 ◽

Vol 2012 ◽

pp. 1-5 ◽

Cited By ~ 3

Author(s):

R. H. Bari ◽

R. S. Khadayate ◽

S. B. Patil ◽

A. R. Bari ◽

G. H. Jain ◽

...

Keyword(s):

Crystal Structure ◽

Thin Films ◽

Grain Size ◽

Surface Morphology ◽

Glass Substrate ◽

Chloride Dihydrate ◽

Tin Chloride ◽

Sno2 Thin Films ◽

Heated Glass ◽

Sensing Performance

Nanostructured SnO2 thin films were prepared by spraying tin chloride dihydrate onto the heated glass substrate at 250°C. The films were fired at 500°C. As-prepared thin films were studied using XRD and FESEM to know crystal structure and surface morphology. The average crystallite and grain size observed from XRD and FF-SEM was found to be less than 33 and 67 nm, respectively. The films sprayed for 30 min were observed to be most sensitive to H2S at 250°C. The results are discussed and interpreted.

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