新型无机抗菌剂载体──天然纳米坡缕石显微表观结构研究

Microstructure of Natural Nano-palygorskite Used for New Type Inorganic Antibacterial

β型坡缕石的ＳＥＭ、ＴＥＭ下单体及集合体显微形貌揭示其为典型的纳米级纤维矿物，且晶体生长缺陷十分发育。经改性后，不仅纤维束间的解聚增加，而且Ｈ＋对八面体中阳离子Ｍｅ２＋、Ｆｅ３＋、Ａl３＋置换造成微空隙增多、比表面增大，导致物理吸附性能增强，为金属离子型无机抗菌剂的优良载体。

：The micro-image of the single crystal and the aggregate of β style palygorskite under SEM and TEM releases that it is the typical fibre mineral in Nano size with developed crystal-growth defect. Not only the disaggregation between fibres enhances but also the micro-pore increases because of the replace- ment of H+ for Mg2+, Fe3+, and Al3+ after activation, which results in the increasement of the specific surface area and the enforcement of the physical absorption. To sum up it is the excellent carrier for metal ion inorganic antibacterial.