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利用分子自组装技术,在二氧化钛膜与载体间插入一个含双官能基的修饰分子,制备出高催化活性的新型二氧化钛薄膜。该修饰分子一端通过硅烷分子连接载体,另一端利用磺酸基来捕捉二氧化钛粒子,因此二氧化钛薄膜具有较大的表面积和优异的稳定性。对经过修饰的载体进行润湿角测定和ESCA的表征,从而证明载体已经被修饰。以甲基橙为光催化降解的探针反应,证实了新型薄膜具有比传统薄膜更高的催化活性。
Using molecular self-assembly technique, a bifunctional modified molecule was inserted between the titania film and the support to prepare a new titania film with high catalytic activity. The modified molecule is connected to the carrier via silane molecules at one end, and the titanium dioxide particles are captured by the sulfonic acid group at the other end. Therefore, the titanium dioxide film has larger surface area and excellent stability. The modified carrier was subjected to wetting angle determination and ESCA characterization to demonstrate that the vector had been modified. Methyl orange photocatalytic degradation of the probe reaction, confirmed the new film has a higher catalytic activity than the traditional film.