Nano Archive

Synthesis method for silica needle-shaped nano-hollow structure

Zhao, Hua and Li, Yanjv and Liu, Runjing and Zhao, Fengyun and Hu, Yongqi (2008) Synthesis method for silica needle-shaped nano-hollow structure. Materials Letters, 62 (19). 3401 - 3403.

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Silica needle-shaped nano-hollow structure with high specific surface area was prepared by a sol–gel approach using needle-shaped calcium carbonate (CaCO3) nanoparticles as novel template and sodium silicate as the silica source, followed by washing in acidic solution to remove the CaCO3 sacrificial template. The sample was characterized by transmission electron microscope (TEM), scanning electron microscope (SEM), energy disperse spectroscopy (EDS), X-ray diffraction (XRD), Fourier transform infrared (FTIR) and BET. The results show that regular uniform silica nano-hollow tubes are obtained: the length of the hollow tubes ranges from 200 nm to 300 nm with a inside diameter about 20 nm, the thickness of the tubes is around 10 nm, the specific surface area of the sample is up to 321.4 m2/g, the average pore diameter is 63.83 Å and the total pore volume is 0.5128 cm3/g.

Item Type:Article
Uncontrolled Keywords:Needle-shaped CaCO3 nanoparticle; Template; Sol–gel; Silica nano-hollow structure; Nanomaterials
Subjects:Material Science > Nanofabrication processes and tools
Material Science > Nanostructured materials
ID Code:6628
Deposited By:SPI
Deposited On:10 Feb 2010 14:01
Last Modified:10 Feb 2010 14:01

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