The inorganic precursor tetraethyl orthosilicate (C8H20O4Si–TEOS, 98%) for SiO2 synthesis was provided by Sigma Aldrich. Ammonium hydroxide (NH4OH–30% v⋅v−1) was the catalyst.
The inorganic precursor tetraethyl orthosilicate(C8H20O4Si–TEOS, 98%) for SiO2 synthesis was provided bySigma Aldrich. Ammonium hydroxide (NH4OH–30% v⋅v−1)was the catalyst.