| 摘要 |
Provided are a silicon-based monobasic or multibasic oxide aerogel material and a preparation method therefor. In the preparation method, water glass is used as a silicon source, a water soluble metal salt corresponding to a mixed metal oxide is randomly selected, an acid or alkali is added into the water soluble metal salt, and the system pH value is adjusted to form a salt-containing monobasic or multibasic oxide collosol; the salt-containing monobasic or multibasic oxide collosol is mixed with a water-soluble organic solvent, the mixture is filtered to remove the produced deposit, a salt-free monobasic or multibasic oxide collosol is obtained, and sol-gel, aging and drying processes are carried out to obtain a monobasic or multibasic oxide aerogel material. The method has low cost and simple process, and facilitates mass production of high efficiency. |
