Quantification of the boron speciation in alkali borosilicate glasses by electron energy loss spectroscopy

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DOI

  • Shaodong Cheng, Xi An Jiao Tong Univ, Xi'an Jiaotong University, Int Ctr Dielectr Res
  • ,
  • Guang Yang, Xi An Jiao Tong Univ, Xi'an Jiaotong University, Int Ctr Dielectr Res
  • ,
  • Yanqi Zhao, S China Univ Technol, South China University of Technology, State Key Lab Luminescent Mat & Devices, Denmark
  • MingYing Peng, S China Univ Technol, South China University of Technology, State Key Lab Luminescent Mat & Devices, Denmark
  • Jorgen Skibsted
  • Yuanzheng Yue, Wuhan Univ Technol, Wuhan University of Technology, State Key Lab Silicate Mat Architectures

Transmission electron microscopy and related analytical techniques have been widely used to study the microstructure of different materials. However, few research works have been performed in the field of glasses, possibly due to the electron-beam irradiation damage. In this paper, we have developed a method based on electron energy loss spectroscopy (EELS) data acquisition and analyses, which enables determination of the boron speciation in a series of ternary alkali borosilicate glasses with constant molar ratios. A script for the fast acquisition of EELS has been designed, from which the fraction of BO4 tetrahedra can be obtained by fitting the experimental data with linear combinations of the reference spectra. The BO4 fractions (N-4) obtained by EELS are consistent with those from B-11 MAS NMR spectra, suggesting that EELS can be an alternative and convenient way to determine the N-4 fraction in glasses. In addition, the boron speciation of a CeO2 doped potassium borosilicate glass has been analyzed by using the time-resolved EELS spectra. The results clearly demonstrate that the BO4 to BO3 transformation induced by the electron beam irradiation can be efficiently suppressed by doping CeO2 to the borosilicate glasses.

Original languageEnglish
Article number17526
JournalScientific Reports
Volume5
Number of pages7
ISSN2045-2322
DOIs
Publication statusPublished - 8 Dec 2015

    Research areas

  • BOROPHOSPHATE GLASSES, EELS, COORDINATION, IRRADIATION, CHEMISTRY, BORATE, XANES, TEM

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