Silica nanoparticles and frameworks from rice husk biomass.
Biogenic silica nanoparticles (25-30 nm in diameter) were synthesized from rice husks. The characterizations revealed that the silica nanoparticles were composed of smaller primary particles (ca. 4.2 nm in diameter), and their clustering led to a porous structure with a surface area of 164 m(2)/g. Under the controlled melting catalyzed by K(+), such silica nanoparticle clusters can gradually fuse to form semicrystalline porous silica frameworks with tunable pore size and structural integrity.
School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China. cewxwang@scut.edu.cn
Weixing
W
Wang
Jarett C
JC
Martin
Xiaotian
X
Fan
Aijie
A
Han
Zhiping
Z
Luo
Luyi
L
Sun
D018533:Biomass; D053758:Nanoparticles / Q000737:chemistry*; D012275:Oryza / Q000737:chemistry*; D010316:Particle Size; D016062:Porosity; D012822:Silicon Dioxide / Q000737:chemistry*
D012822:Silicon Dioxide