Facile preparation of cubic calcium carbonate nanoparticles with hydrophobic properties via a carbonation route

✍ Scribed by Yinxia Chen; Xianbing Ji; Gaiqing Zhao; Xiaobo Wang

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 479 KB
• Volume: 200
• Category: Article
• ISSN: 0032-5910
• DOI: 10.1016/j.powtec.2010.02.017

✦ Synopsis

Cubic calcium carbonate nanoparticles with hydrophobic properties were prepared by a carbonation route in the presence of dodecanoic acid at 20 °C. The as-prepared products were characterized by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) and contact angle analysis. It was found that dodecanoic acid not only inhibited the growth of CaCO 3 particles but also changed the surface properties of the final products. The effects of the weight ratio of DA to CaCO 3 , the calcium hydroxide concentration and temperature on the morphologies of the as-prepared calcium carbonate were systematically studied. The results showed that temperature, the weight ratio of DA to CaCO 3 and the calcium hydroxide concentration are important parameters for the preparation of cubic calcium carbonate nanoparticles with hydrophobic properties.