Sintering behaviour of zinc stannate

Hashemi, T.; Al‐Allak, H. M.; Illingsworth, J.; Brinkman, A.W.; Woods, J.

doi:10.1007/bf00720155

Cited by 55 publications

(21 citation statements)

References 4 publications

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“…4), the crystalline SnO 2 and Ag do form. With a further increase of the annealing temperature to 800 • C, a new spinel-type Zn 2 SnO 4 type is formed, which originates from the solid reaction between ZnO and SnO 2 [44]. However, the lower peak intensity of Zn 2 SnO 4 represents its lower content than ZnO and SnO 2 in the powders.…”

Section: Ag/zno-sno 2 Characterizationmentioning

confidence: 96%

High photocatalytic activity of silver-loaded ZnO-SnO2 coupled catalysts

Wang

Baek

Lee

et al. 2009

Chemical Engineering Journal

107

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Section: Ag/zno-sno 2 Characterizationmentioning

confidence: 96%

High photocatalytic activity of silver-loaded ZnO-SnO2 coupled catalysts

Wang

Baek

Lee

et al. 2009

Chemical Engineering Journal

107

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“…[13][14][15][16][17] Spinel Zn 2 SnO 4 is formed when ZnO and SnO 2 powders are sintered at or above 1000°C. 18 The proposed mechanism of the solid-state chemical reaction between ZnO and SnO 2 18,19 predicts limited evaporation of ZnO at higher temperatures (in addition to the ordinary diffusion processes of the solid-state chemical reaction between ZnO and SnO 2 ). Evaporated ZnO opens up larger pores in places where SnO 2 is not available for reaction due to incomplete mixing during the traditional sintering preparation procedure.…”

Section: Introductionmentioning

confidence: 99%

Impedance Response and Dielectric Relaxation in Liquid-Phase Sintered Zn2SnO4-SnO2 Ceramics

Slankamenac

Ivetić

Nikolić

et al. 2010

Journal of Elec Materi

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Impedance/admittance and dielectric spectroscopy were used to investigate the effect of temperature on the electrical response of liquid-phase sintered Zn 2 SnO 4 -SnO 2 ceramics. The measurements were performed over a wide frequency range (100 Hz to 10 MHz) at different temperatures. The real and the imaginary part of the complex impedance traced semicircles in the complex plane. The resistance and the capacitance of bulk and grain-boundary regions were determined by modeling the experimental results using several equivalent circuits taking into account bulk deep trap states. Admittance complex diagrams were also determined in order to understand better the conduction mechanisms occurring in the polycrystalline Zn 2 SnO 4 -SnO 2 system.

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“…It is usually prepared by solid-state calcination between ZnO and SnO 2 , at high temperatures (higher than 1,000°C) [21]. However, this conventional method presents disadvantages such as difficulty in obtaining a pure phase and the need for very high reaction temperatures [22].…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal preparation of Zn2SnO4 nanocrystals and photocatalytic degradation of a leather dye

2009

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Zinc stannate (Zn 2 SnO 4 ) powder was prepared by a hydrothermal process at 200°C for 12 h. The material was characterized by X-ray-diffraction (XRD) and N 2 adsorption-desorption isotherms. The synthesized sample presented a pure phase, an average nanocrystal size of about 19 nm, a surface area (BET) of about 41.8 m 2 g -1 and total pore volume of about 0.19 cm 3 g -1 . Its photocatalytic activity was tested by the degradation of the leather azo-dye, Direct Black 38, in aqueous solution under UV irradiation. Adsorption kinetic data showed that the pseudo-second-order model was the most appropriate for the dye studied. Adsorption onto the Zn 2 SnO 4 surface followed the Langmuir isotherm. The catalyst showed highly photocatalytic activity towards degradation of the dye, almost equal to that of the TiO 2 -P25 Degussa photocatalyst. The results indicate that Zn 2 SnO 4 could be employed for the removal of dyes from wastewaters.

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Sintering behaviour of zinc stannate

Cited by 55 publications

References 4 publications

High photocatalytic activity of silver-loaded ZnO-SnO2 coupled catalysts

High photocatalytic activity of silver-loaded ZnO-SnO2 coupled catalysts

Impedance Response and Dielectric Relaxation in Liquid-Phase Sintered Zn2SnO4-SnO2 Ceramics

Hydrothermal preparation of Zn2SnO4 nanocrystals and photocatalytic degradation of a leather dye

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