CN

陈克正

Professor

Supervisor of Doctorate Candidates

Supervisor of Master's Candidates

Date of Birth:1965-10-27

Paper Publications

氧化钛/碳纳米管复合材料的制备及抑菌机理的AFM研究

Release time:2021-03-15 Hits:

Key Words:碳纳米管;;氧化钛;;抑菌;;原子力显微镜

Abstract:本文用水热法制备了纳米氧化钛/多壁碳纳米管(TiO2/MWNT)的复合材料,将该复合材料在自然光下对大肠杆菌进行处理,用原子力显微镜(AFM)观察菌体在受其作用前后的变化过程,探讨该复合材料的抑菌机理。本文提供了直接的证据证明,该材料能在可见光下催化降解细菌壁膜导致大肠杆菌的死亡。此外,经复合材料作用后的菌体表面粗糙度变大,弹性系数由0.30 N/m下降至0.14 N/m。复合材料之所以具有比纯氧化钛更强的杀菌效果主要是碳纳米管的加入不但可改善纳米TiO2的分散性,更主要的是有利于氧化钛光生电子和空穴对的有效分离。

Volume:v.32;No.168

Issue:04

Translation or Not:no

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