Title

Growth and structure evolution of SnO2 nanomaterial

College

College of Science

Department/Unit

Physics

Document Type

Conference Proceeding

Source Title

Proceedings of the Ninth OU-DLSU Academic Research Workshop

First Page

79

Last Page

83

Abstract

SnO2 nanomaterial was fabricated using the horizontal vapor phase growth technique without a catalyst or seed. The resulting crystals displayed morphologies ranging from nanobelts to nanorods as confirmed by JEOL 5310 scanning electron microscope. From the results of the DTA-DSC curve, it was shown that the nanomaterial undergone (SVLS) (solid-vapor-liquid-solid) phase growth. Comparative analysis shows that the specific heat and melting point of the SnO2 nanomaterial decreased compared to existing literature. In the present study, the metal Sn has been clearly identified existing in the SnO2 source powders after evaporation. This is an indication that the concentration of oxygen is limited in the present equipment system although a small leak is possible. The metal Sn particles are also found coexisting with SnO2 nanobelts at the high-temperature region indicating the occurrence of the decomposition of SnO2 vapors. Thus, the decomposition of SnO2 vapors is likely the dominant process to be responsible for the formation of SnO2 products in our system.

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Disciplines

Physics

Keywords

Nanostructured materials; Stannic oxide

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