New Synthesis Method to Obtain Pd Nano-Crystals
|Periodical||Journal of Nano Research (Volume 14)|
|Main Theme||Journal of Nano Research Vol. 14|
|Citation||Magali Ugalde et al., 2011, Journal of Nano Research, 14, 93|
|Online since||April, 2011|
|Authors||Magali Ugalde, E. Chavira, Martha T. Ochoa-Lara, Carlos Quintanar|
|Keywords||HRSEM, Palladium Nano-Crystal, Sol-Gel Method, TEM, TGA, X-Ray Diffraction (XRD)|
We report a new synthesis method to obtain palladium nano-crystals by sol-gel polymerized with acrylamide. From thermogravimetric analysis (TGA) studies, we found PdO and Pd compounds in the xerogel sample, at 550 ºC, and over 900 ºC we detected only metallic Pd. These results were corroborated by powder X-Ray Diffraction (XRD), High Resolution Scanning Electron Microscopy (HRSEM), and Transmission Electron Microscopy (TEM). XRD studies exhibit the lines from the tetragonal structure (PDF 41-1107) of PdO compound and from the cubic structure (PDF 46-1043) of Pd metallic. HRSEM micrographs show morphologies from the sample very sensitive to heat treatment. Finally, TEM images show crystals of ~8 nm in diameter.