CIESC Journal ›› 2016, Vol. 67 ›› Issue (S1): 379-383.doi: 10.11949/j.issn.0438-1157.20160565

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Synthesis of SiO2 nanoparticles by chemical precipitation

HU Yanwei, CHENG Gong, LI Haoran, HE Yurong   

  1. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China
  • Received:2016-04-28 Revised:2016-05-08 Online:2016-08-31 Published:2016-08-31
  • Supported by:

    supported by National Natural Science Foundation of China (51322601), the Foundation for Innovative Research Groups of the National Natural Science Foundation of China (51421063), and the Science Creative Foundation for Distinguished Young Scholars in Harbin (2014RFYXJ004).

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Abstract:

With excellent physical characteristics such as heat proof, thermal insulation and abrasion resistance, etc., silica nanoparticles have attracted a lot interesting from various industries. Many methods have been proposed to formulate SiO2 nanoparticles, for example, aerosol method, chemical precipitation method, microemulsion method and sol-gel method. Compared with other methods, chemical precipitation uses cheaper materials and is easily to be industrialized. In present work, based on the chemical precipitation method, SiO2 nanoparticles were prepared using sodium silicate (Na2SiO3) as silicon source, ammonium chloride (NH4Cl) as precipitant and cetyl trimethyl ammonium bromide (CTAB) as dispersant. TG-DSC was used to determine the decomposition temperature of CTAB. After the preparation, SiO2 nanoparticles were characterized using Fourier Transform Infrared Spectrometer (FTIR Spectrometer), X-Ray Diffraction (XRD) and Scanning Electron Microscope (SEM). Results show that SiO2 nanoparticles formulated by chemical precipitation were amorphous state with an average diameter of 80 nm.

Key words: chemical precipitation, synthesis, nanoparticles, characterization, size distribution

CLC Number: 

  • TB34
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