Structure and properties of sol-gel obtained SnO2 and SnO2-Pd films

Ivanovskaya, M. I.; Bogdanov, P; Orlik, D. R.; Gurlo, Aleksander; Romanovskaya, V. V.

doi:10.1016/s0040-6090(96)09354-6

Cited by 32 publications

(12 citation statements)

References 3 publications

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“…Tin oxide (SnO 2 ), a ntype semiconductor with a wide band gap (3.6 eV, at 300 K), is well known for its potential applications in gas sensors, dye sensitized solar cells, and transparent conducting electrodes and as a catalyst support [3,4]. Therefore, many processes have been proposed to synthesize SnO 2 nanostructures; some involve dry processes such as sputtering from tin oxide target [5] or from metallic target followed by oxidation [6] and chemical vapour deposition (CVD) [7], while others are based on wet processes, including spray pyrolysis [8] and sol-gel-related methods which have been used to prepare tin oxide coating, particles, and precipitates [9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Effect of Sintering Temperatures on the Synthesis of SnO2 Nanospheres

Pawar

Pinjari

Kolekar

et al. 2012

ISRN Chemical Engineering

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In this communication we report the rapid nanostructure of SnO 2 with a spherical morphology which has been prepared in large scale via sol-gel method. The products were characterized with scanning electron microscopy, X-ray powder diffraction, transmission electron microscopy, FTIR, and photoluminescence spectroscopy. The strong photoluminescence of the nanosphere in visible region suggested possible application in nanoscaled optoelectronic devices. A possible growth mechanism for the SnO 2 nanosphere in terms of solvation, hydrolysis, and polymerization was proposed.

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Section: Introductionmentioning

confidence: 99%

Effect of Sintering Temperatures on the Synthesis of SnO2 Nanospheres

Pawar

Pinjari

Kolekar

et al. 2012

ISRN Chemical Engineering

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“…15,16,20,21 Tin oxide-based materials have been prepared by many different techniques; some involve dry processes, such as sputtering from a tin oxide target 22,23 or from a metallic target followed by oxidation, 24 laser ablation 15 and chemical vapor deposition (CVD), 25 others are based on wet processes, including spray pyrolysis, [26][27][28] decomposition/oxidation of tin(II) amides 29 and sol-gel-related methods, which have been used to prepare tin oxide coatings, particles and precipitates. 4,6,[30][31][32][33][34][35][36][37][38][39][40][41][42] Among the different possible synthetic outcomes, stable sols of crystalline tin oxide nanoparticles are of interest for the preparation of antistatic coatings, 13 conductive coatings, 4 filtration membranes 4 and gas sensors. 29 Indeed, the sol state can be easily used for dip-or spin-coatings.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of crystalline tin oxide nanoparticles

et al. 2002

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Monodisperse non-aggregated spheroidal nanoparticles of SnO 2 cassiterite are prepared through hydrolysis of tin isopropoxide in the presence of acetylacetone and p-toluenesulfonic acid, followed by ageing at 60 uC. The obtained sols remain stable for several months at 4 uC. The nanoparticles have been characterized in the solid state (xerosol) by powder X-ray diffraction, TEM, FTIR, TGA-DTA, and 119 Sn MAS and 13 C CP-MAS NMR. The mean size of the cassiterite oxide core is about 1-2 nm. These particles do not aggregate in suspension because their surfaces are protected by an hybrid organic-inorganic layer containing acetylacetonate ligands, acetylacetone, p-toluenesulfonates and water.

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“…Metal oxide semiconductor based thin and thick films have been widely used in gas sensors. Such materials possess good chemisorption based affinity towards a wide range of gases like NH 3 , CH 4 , and H 2 S and Volatile Organic Compounds (VOC) with a detection ability up to a few ppm levels [1][2][3][4][5]. Among them, SnO 2 in particular has been studied extensively to monitor gas leakage in diverse real time applications.…”

Section: Introductionmentioning

confidence: 99%

“…Among them, SnO 2 in particular has been studied extensively to monitor gas leakage in diverse real time applications. The basic sensing principle behind metal oxide based thin or thick film is that there will be a change in the electrical resistance due to gas reacting with negatively charged oxygen that is adsorbed on the surface of the SnO 2 nanoparticles [2][3][4][5][6]. Mostly metal oxide gas sensors are rugged in nature and easy to use and the performance of these metal oxide sensing mechanisms is highly dependent on the operating temperature [7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Temperature Optimized Ammonia and Ethanol Sensing Using Ce Doped Tin Oxide Thin Films in a Novel Flow Metric Gas Sensing Chamber

Govardhan

Grace

2016

Journal of Sensors

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A simple process of gas sensing is represented here using Ce doped tin oxide nanomaterial based thin film sensor. A novel flow metric gas chamber has been designed and utilized for gas sensing. Doping plays a vital role in enhancing the sensing properties of nanomaterials. Ce doped tin oxide was prepared by hydrothermal method and the same has been used to fabricate a thin film for sensing. The microstructure and morphology of the prepared materials were analysed by SEM, XRD, and FTIR analysis. The SEM images clearly show that doping can clamp down the growth of the large crystallites and can lead to large agglomeration spheres. Thin film gas sensors were formed from undoped pure SnO2and Ce doped SnO2. The sensors were exposed to ammonia and ethanol gases. The responses of the sensors to different concentrations (50–500 ppm) of ammonia and ethanol at different operating temperatures (225°C–500°C) were studied. Results show that a good sensitivity towards ammonia was obtained with Ce doped SnO2thin film sensor at an optimal operating temperature of 325°C. The Ce doped sensor also showed good selectivity towards ammonia when compared with ethanol. Pure SnO2showed good sensitivity with ethanol when compared with Ce doped SnO2thin film sensor. Response time of the sensor and its stability were also studied.

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Structure and properties of sol-gel obtained SnO2 and SnO2-Pd films

Cited by 32 publications

References 3 publications

Effect of Sintering Temperatures on the Synthesis of SnO2 Nanospheres

Effect of Sintering Temperatures on the Synthesis of SnO2 Nanospheres

Synthesis and characterization of crystalline tin oxide nanoparticles

Temperature Optimized Ammonia and Ethanol Sensing Using Ce Doped Tin Oxide Thin Films in a Novel Flow Metric Gas Sensing Chamber

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