Growth, structure evolution, and thermal property of SnO₂ nanomaterial

Authors

Ronald B. de los Reyes ⋅ PH Physics Department, De La Salle University, Manila
Prane Mariel Ong ⋅ PH Physics Department, De La Salle University, Manila
Vincent Ngo ⋅ PH Physics Department, De La Salle University, Manila
Gil Nonato C. Santos ⋅ PH Physics Department, De La Salle University, Manila
Reuben V. Quiroga ⋅ PH Physics Department, De La Salle University, Manila

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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Issue

2007: Proceedings of the 25th Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP-2007-PB-12

Section

Poster Session PB

Published

2007-10-24

How to Cite

[1]

RB de los Reyes, PM Ong, V Ngo, GNC Santos, and RV Quiroga, Growth, structure evolution, and thermal property of SnO2 nanomaterial, Proceedings of the Samahang Pisika ng Pilipinas 25, SPP-2007-PB-12 (2007). URL: https://proceedings.spp-online.org/article/view/SPP-2007-PB-12.