Fractal characteristic of the porous structure of the additive silica xerogels;

Normally silica aerogels materials have a large affinity to absorb liquids such as water due to their high porosity with pores open" to the surface.

General approach to the surface of the silica aerogels with large amount of hydroxyl, which makes it easy to absorb moisture in the air, water easily broken, the negative of its performance, in addition to supercritical drying process with high energy consumption, high-risk, non-consecutive affect the production characteristics of the widespread use of silica aerogels.

The results show that the physical and hydrophobic properties of the silica aerogels depend on the volume ratio to TMCS ot hexane.

This study aims to study the properties of silica aerogel composites and heat transfer simulation.

The thermal decomposition of silica aerogel modified by methyl groups in air is investigated by Fourier transform infrared spectroscopy(FTIR) and thermogravimetry(TG)-differential thermogravimetry(DTG).

The main contents of this work are as follows:A tyrosinase biosensor based on Prussian Blue-modified glassy carbon electrode, combined with SiO_2 sol-gel immobilization,is constructed in a "sandwich" configuration.