ren hongbo, bi yutie, qin yuancheng, et al. Synthesis of GeO2/SiO2 binary composite aerogel by cohydrolysis[J]. High Power Laser and Particle Beams, 2010, 22.
Citation:
ren hongbo, bi yutie, qin yuancheng, et al. Synthesis of GeO2/SiO2 binary composite aerogel by cohydrolysis[J]. High Power Laser and Particle Beams, 2010, 22.
ren hongbo, bi yutie, qin yuancheng, et al. Synthesis of GeO2/SiO2 binary composite aerogel by cohydrolysis[J]. High Power Laser and Particle Beams, 2010, 22.
Citation:
ren hongbo, bi yutie, qin yuancheng, et al. Synthesis of GeO2/SiO2 binary composite aerogel by cohydrolysis[J]. High Power Laser and Particle Beams, 2010, 22.
A “one pot” procedure of synthesis of GeO2/SiO2 binary composite aerogel was presented. The precursors of GeO2 and SiO2 were vigorously stirred into homogenous mixture in alcohol solution and the stoichiometric calculation water was added to co-hydrolyze the solution at 0 ℃. After the clear sol obtained, ammonium was introduced into the sol to gelatinize the system. The solvent in gel pores was removed by supercritical CO2 to prepare composite aerogels. The as-synthesized aerogels were characterized by field-emission scanning electron microscopy(FESEM), high-resolution transmission electron microscopy(HRTEM) and Brunauer-Emmett-Teller(BET) N2 isothermal adsorption method. The FESEM micrograph shows that, the aerogels are made up of
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