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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 12    
Website: http://www.ijser.org
scirp IJSER >> Volume 2, Issue 12, December 2011
Growth Mechanism of SnO2 Nanomaterials Derived From Backscattered Electron Image and EDX Observations
Full Text(PDF, 3000)  PP.  
Ronald de los Reyes,Gil Nonato C. Santos
growth mechanism, SnO2 nanomaterials, backscattered electron image, EDX, HVPG
SnO2 nanomaterials were synthesized using the unseeded, non-catalytic horizontal vapor phase growth (HVPG) deposition. The sample was synthesized at a growth temperature of 1200oC and growth time of 6 hours. The resulting nanostructures ranges from nanowires, nanorods to nanobelts as confirmed by JEOL JSM 5310-SEM. Backscattered electron image observations show that nanobelts has less intense brightness compared to nanorod and nanowire images. This suggests that the nanobelts are of lighter composition. Using energy dispersive X-ray (EDX) analysis, it was confirmed that the nanobelts are oxygen deficient, being made up of SnO while the nanorods and nanowires are made of the more common SnO2. From these findings, a growth mechanism was proposed detailing the transition of the SnO2 nanostructures from the powder SnO2 source material.
(1) VT Ngo, GNC Santos, RV Quiroga and A Salvador, “Synthesis of Tin Oxide Nanomaterial Using the Vacuum Deposition Technique” in Proc. of the 25thSamahangPisikangPilipinas, Los Banos, Laguna, Philippines: 20; 2007.

(2) S Sowl, A Co, V Ngo, GNC Santos, R Pobre, RV Quiroga and A Salvador, “Beaklike SnO2 Nanorods with Fluorescence and Photoluminescence Properties”, in Proc of the 25thSamahangPisikangPilipinas, Los Banos, Laguna, Philippines, 16, 2007.

(3) GNC Santos, V Ngo, PM Ong, R De Los Reyes, and RV Quiroga, “Growth, Structure Evolution and Thermal Properties of SnO2 Nanomaterial” in Proc. Of the 25thSamahangPisikangPilipinas, Los Banos, Laguna, Philippines: 20; 2007.

(4) OK Varghese, LK Malhotra. Sensors Actuators B53: 19; 1998.

(5) S Ferrere, A Zaban , BA Gregg. J PhysChem 101: 4490; 1997 .

(6) J Zhu, Z Lu, ST Aruna, D Aurbac, AGedanken. ChemMater 12(9): 2557; 2000.

(7) MS Moreno, G Punte, G Rigotti, RC Mercader, AD Weisz, MA Blesa, “Kinetic study of the disproportioation of tin monoxide” Solid State Ionics, 144, 81-86;2001.

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