Effect of pH on the synthesis of Cuo nanosheets by quick precipitation method

• Main Authors: Shahmiri, Mahdi, Ibrahim, Nor Azowa, Zainuddin, Norhazlin, Asim, Nilofar, Bakhtyar, B., Zaharim, Azami, Sopian, Kamaruzzaman
• Format: Article
• Language: English; English
• Published: World Scientific and Engineering Academy and Society 2013
• Online Access: http://psasir.upm.edu.my/id/eprint/30340/1/Effect%20of%20pH%20on%20the%20synthesis%20of%20Cuo%20nanosheets%20by%20quick%20precipitation%20method.pdf; http://psasir.upm.edu.my/id/eprint/30340/; http://wseas.org/wseas/cms.action?id=6939

In this paper, copper oxide nanosheets were successfully fabricated in polyvinylpyrrolidone (PVP) via a quick precipitation method. The synthesized CuO nanostructures were characterized by X-ray diffraction (XRD), UV-vis spectroscopy, transmission electron microscopy (TEM), field emission scanning electron microscopy, energy dispersive analysis of X-ray, and Fourier transform infrared (FT-IR) spectroscopy. The effect of pH on the final product was investigated. The results show that a higher volume ratio of NaOH results in well-defined CuO nanosheets. XRD results confirmed the formation of pure CuO with a monoclinic structure at higher pH, whereas gerhardtite was formed at lower pH. TEM results indicate that sheet-like CuO were formed at higher pH. FT-IR results show that C=O in PVP coordinated with CuO and formed a protection layer. The generation of CuO nanostructures was proven by UV-vis spectroscopy. The mechanism of the reaction was also discussed.