Preparation and characterisation of high surface area stannic oxides: structural, textural and semiconducting properties

Sergent, Nicolas; Gélin, P.; Périer-Camby, Laurent; Praliaud, H.; Thomas, Gérard

doi:10.1016/s0925-4005(02)00022-9

Cited by 104 publications

(65 citation statements)

References 38 publications

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“…Nanoparticles of tin dioxide have been synthesized by several methods such as precipitation 151,157 , hydrothermal synthesis 158,159 , sol-gel 160,161 , hydrolytic 162 , carbothermal reduction 163 and polymeric precursor 164 methods. A variety of SnO 2 nanostructures including nanowires, nanobelts 165 , nanotubes 150,166,167 , nanorods 168,169 , spirals, nanorings 170 , zigzag nanobelts 171 , grains 172 , flakes 172 , plates 172 , meshes 173 and columnar thin film 149 were synthesized.…”

Section: Xps Analysis Of the Surface Coatingsmentioning

confidence: 99%

Morphology Control of Metal Oxide Nanocrystals

Masuda¹

2011

Nanocrystal

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Section: Xps Analysis Of the Surface Coatingsmentioning

confidence: 99%

Morphology Control of Metal Oxide Nanocrystals

Masuda¹

2011

Nanocrystal

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“…Although there has been considerable success in the synthesis of SnO 2 nanomaterials of various morphologies [17][18][19][20], it is still a major challenge to prepare SnO 2 nanocrystals (NCs) with dimensions of less than 10 nm in different discrete sizes and relatively high BET surface area which is essential features for higher photocatalytic activity [21,22]. Furthermore, to date, many SnO 2 -based coupled semiconductor composite photocatalysts, such as SnO 2 -TiO 2 [23][24][25][26], SnO 2 -ZnO [27][28][29][30][31] or SnO 2 -CuO [32] have been extensively studied for their high photocatalytic activities.…”

Section: Introductionmentioning

confidence: 99%

Nano-sized SnO<sub>2</sub> Photocatalysts: Synthesis, Characterization and Their Application for the Degradation of Methylene Blue Dye

2016

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In the present study, tin oxide (SnO 2 ) nanoparticles were prepared by precipitation method using tin tetrachloride (SnCl 4 ) as precursor and ammonia solution as precipitating agent followed by calcination at 400 ºC for 2 h. As-prepared SnO 2 particles were characterized by X-ray diffraction (XRD) and Fourier Transform Infrared (FTIR). The powder XRD results revealed that the SnO 2 nanoparticles had a typical tetragonal rutile (cassiterite) structure and the average crystallite size calculated by using the Debye -Scherrer equation was found to be approximately 5.1 nm. The photocatalytic activity of the as-prepared photocatalysts was investigated by degrading methylene blue (MB) dye. The effect of pH, catalyst loading and initial dye concentration on photocatalytic degradation was investigated. Results showed that the SnO 2 nanoparticles represented excellent photocatalytic activity for the degradation of MB under UV light with 200 min of irradiation time. The results also showed that the pH of solution had a direct influence on the photocatalysis process and basic pH was favorable for the degradation of MB. The effect of pH on photocatalytic activity was explained with the help of zero point charge (pH pzc ). Furthermore, the photocatalysts could be easily recycled without significant change in the catalytic activity.

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“…[39]. Formation of an increasing number of oxygen states with both [O 2 ] and temperature features a kinetics limitation, which is related to a limited surface for formation of oxygen adsorbates (saturation effect), and electronic repulsion effects (interaction between conduction electrons and negative oxygen species), and a thermodynamic limitation related to both the destabilization of oxygen adsorbates with increasing temperature (which is evidenced by the reduction of effective coverage with temperature), and an increase in oxygen vacancies at high temperature [12,[57][58][59][60][61].…”

Section: Filmsmentioning

confidence: 99%

Characterization of carrier states in CuWO4 thin-films at elevated temperatures using conductometric analysis

Gonzalez¹,

Dunford²,

Du³

et al. 2013

Journal of Solid State Chemistry

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/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1016/j.jssc.2013.02.002 Chemistry, 201, pp. 35-40, 2013-02-10 Characterization of carrier states in CuWO4 thin-films at elevated temperatures using conductometric analysis Gonzalez, Carlos M.; Dunford, Jeffrey L.; Du, Xiaomei; Post, Michael L. Abstract: CuWO 4 thin-films were deposited by pulsed laser deposition onto an insulating substrate. The temperature dependence of the electronic conductivity of CuWO 4 thin-films was determined over the 100 °C -500 °C temperature range in a synthetic air atmosphere. Additionally, variations of conductivity at 300°C and 500°C have been measured for oxygen partial pressures (0.1 atm < p(O 2 ) < 0.9 atm) in nitrogen. The apparent activation energy ∆E a for the electrical conduction has been estimated. The study of the temperature effect on the electron transport properties of CuWO 4 thin-films reveals the operation of two temperature-dependent oxygen states. The effect of varying oxygen concentration on the electronic properties is discussed in detail. The electrochemical nature of the operating oxygen states for the 100°C -500 °C temperature range is deduced using a physicochemical model that relates electronic conductivity with oxygen partial pressure and temperature. Journal of Solid State Characterization of Carrier States in CuWO

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Preparation and characterisation of high surface area stannic oxides: structural, textural and semiconducting properties

Cited by 104 publications

References 38 publications

Morphology Control of Metal Oxide Nanocrystals

Morphology Control of Metal Oxide Nanocrystals

Nano-sized SnO<sub>2</sub> Photocatalysts: Synthesis, Characterization and Their Application for the Degradation of Methylene Blue Dye

Characterization of carrier states in CuWO4 thin-films at elevated temperatures using conductometric analysis

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