The hydrophilicity of the modified nano - tio2 film was also studied . the ruslt shows that the hydrophilic angle has a little increase , but its super hydrophilicity is not alterant , and also shows the hydrophilic angle increasing on open entironment is slowing 结果表明，改性后催化剂的接触角有所增加，但催化剂的超亲水性没有发生改变，同时催化剂经等离子体处理后在开放的环境中样品的接触角的变化缓慢一些。
