And one end of the modifying molecule links substrate through silane molecule, the other end catches TiO2 particle with sulfo group, so the film has large surface area and excellent stability.

• 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。