Amphiphilic block copolymers 1 Block copolymers 1 Characterization 1 Fourier transform infrared 1 Fourier transform infrared spectroscopy 1 Gas adsorption 1 Hydrothermal synthesis 1 Mesoporous 1 Mesoporous materials 1 Nitrogen adsorption desorption 1 Ordered mesoporous silicas Pore size 1 SBA-15 1 Scanning electron microscopy 1 Silica 1 Silicates 1 Silicon 1 Silicon compounds 1 Sodium 1 Sodium silicate 1 Structure directing agents 1 X ray diffraction 1