Carbothermal Reduction Synthesis and Growth Mechanism of Antimony Doped Tin Oxide Solid and Hollow Spheres

Chem. J. Chinese Universities

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Carbothermal Reduction Synthesis and Growth Mechanism of Antimony Doped Tin Oxide Solid and Hollow Spheres

HUANG Zai-Yin^{1, 2*}, CHAI Chun-Fang², TAN Xue-Cai¹, LIAO Dan-Kui², WU Jian¹, YUAN Ai-Qun¹, ZHOU Ze-Guang¹

1. School of Chemistry & Ecological Engineering, Guangxi University for Nationalities, Nanning 530006, China;
2. School of Chemistry & Chemical Engineering, Guangxi University, Nanning 530004, China

Received:2006-09-22 Revised:1900-01-01 Online:2007-04-10 Published:2007-04-10
Contact: HUANG Zai-Yin

Abstract

Abstract: Antimony doped tin oxide(ATO) solid and hollow spheres were fabricated by reducing ATO nanoparticles with graphite as the reducer in the high temperature tube furnace. The phase, element composition, morphologies and crystalline structures of the as-synthesized sample were characterized by XRD, EDX, FE-SEM, TEM and HRTEM, respectively. The results show that the products are ATO solid and hollow spheres with the diameters of about 0.2—5 μm and 2—20 μm, respectively. The size and yield of the solid spheres could be controlled by adjusting the rate of Ar flow and deposition positions. Ostwald Ripening was employed to explain the growth of solid spheres. ATO hollow spheres were synthesized in alumina tube system which has a relatively high oxygen concentration, and its growth mechanism was also discussed. The reason for why the spheres with different morphologies were synthesized by using different tubes under the same conditions was analyzed.

Key words: ATO, Solid spheres, Hollow spheres, Carbothermal reduction

CLC Number:

O611.4
TB34

TrendMD:

HUANG Zai-Yin^{1, 2*}, CHAI Chun-Fang², TAN Xue-Cai¹, LIAO Dan-Kui², WU Jian¹, YUAN Ai-Qun¹, ZHOU Ze-Guang¹. Carbothermal Reduction Synthesis and Growth Mechanism of Antimony Doped Tin Oxide Solid and Hollow Spheres[J]. Chem. J. Chinese Universities, doi: .

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Carbothermal Reduction Synthesis and Growth Mechanism of Antimony Doped Tin Oxide Solid and Hollow Spheres

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