Thermoanalytic and spectroscopic investigations of hydride structures on the surface of amorphous silicon dioxide

The surface of amorphous silicon dioxide is hydrogenated and the hydride st ructures obtained are investigated by means of thermoanalytic and infrared spectroscopic measurements. Different hydride groups are found by IR spectr oscopy. The results are confirmed by thermal measurements. The experimental ly determined bond parameters of the surface silane centers document the di fferences in comparison with the Si-H bonds of other silanes. Model structu res with comparable characteristics of the silicon-hydrogen bond lead to co nclusions concerning the surface texture of the adsorbent.