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Extraction and Characterization of Papilla‐like Biosilica from Rice Hulls
Author(s) -
ZHANG Xiaodong,
SUN Jing,
ZHUANG Jiaqi,
YANG Wensheng
Publication year - 2009
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200990172
Subject(s) - chemistry , small angle x ray scattering , adsorption , mesoporous material , rice hulls , transmission electron microscopy , characterization (materials science) , amorphous solid , chemical engineering , scattering , analytical chemistry (journal) , crystallography , nanotechnology , chromatography , composite material , organic chemistry , optics , materials science , physics , engineering , catalysis
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.