Extraction and Characterization of Papilla-like Biosilica from Rice Hulls

✍ Scribed by Xiaodong ZHANG; Jing SUN; Jiaqi ZHUANG; Wensheng YANG

• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 95 KB
• Volume: 27
• Category: Article
• ISSN: 0256-7660
• DOI: 10.1002/cjoc.200990172

✦ Synopsis

Abstract

Papilla‐like biosilica was extracted from rice hulls by using a wet oxidation method and characterized by means of transmission electron microscopy (TEM), small angle X‐ray scattering (SAXS) and nuclear magnetic resonance (NMR). The experimental results show that the papilla‐like biosilica was a kind of amorphous mesoporous materials composed of particles with a mean radius of about 3.6 nm. Nitrogen adsorption‐desorption measurements indicate that the BET surface area of the biosilica is 355.9 m^2^/g with a BJH adsorption average pore size of 5.8 nm.