7. corrosion of materials, porous silica nano-level (Etching of Mesoporous Silica).Combustible substances, from 7.1 brings mixed text with aqueous sodium hydroxide in 1M ratio μ g/10 ml and then people continuously at temperatures of 100° C for 2 hours.7.2 after that, bake at a temperature of 100° C for 4 hours and then take it to swing in high speed blender. After that, bake time is 24 hours at room temperature.
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