Wang, YL and Tan, DX and Xu, GC and Zhang, MX and Zhang, HY (2010) Interaction Between Ultrafine Nano-Pd and Poly(vinylpyrrolidone). CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE . ISSN 0251-0790
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Ultrafine nano-Pd particles were prepared by ultrasonic without gas protection and reductant in the palladium(II) chloride aqueous solution by the addition of a small quantity of poly(vinylpyrrolidone) (PVP); The samples were characterized by high-resolution transmission electron microscopy (HRTEM), Fourier transform infrared (FTIR) spectroscopy, ultraviolet-visible (UV-Vis) spectroscopy and X-ray photoelectron spectrum(XPS). The nano-Pd particles with a uniform size of a diameter of 3 nm were observed by HRTEM. FTIR analysis shows that the characteristic peak of carbonyl in the nano-N/PVP composites shifted 9 cm(-1) to a lower frequency in comparison with that of the PVP. The results of UV-Vis spectroscopy show that the absorption peak of PVP shifted 16 nm to short wavelength after 50 min ultrasonic. Therefore, there are interactions between Pd and PVP. Based on the proving by XPS, the interactions were formed between the carbonyl group in the composites and the palladium atoms, and were considered to be of coordination and enabled nano-palladium particles to be dispersed stably.
|Subjects:||Material Science > Nanochemistry|
|Deposited On:||25 Sep 2010 12:49|
|Last Modified:||25 Sep 2010 12:49|
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