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首页> 外文期刊>Russian Journal of Physical Chemistry >Patterns of the Formation of Antimicrobial Micro/Nanocomposites during the Oxidation of Bimetallic Al/Zn Nanoparticles
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Patterns of the Formation of Antimicrobial Micro/Nanocomposites during the Oxidation of Bimetallic Al/Zn Nanoparticles

机译：双金属Al / Zn纳米粒子氧化过程中抗菌微/纳米复合材料的形成图案

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摘要

Porous composites of different phase composition are synthesized via oxidation in a water-ethanol mixture of bimetallic Al/Zn nanoparticles obtained through a joint electrical explosion of aluminum and zinc wires in an argon atmosphere. It is found that the oxidation of aluminum and the formation of boehmite nanosheets proceed in solutions containing 720 wt % of water. At water contents over 20 wt %, the almost complete oxidation of aluminum is followed by the onset of zinc oxidation, resulting in the formation of composites containing boehmite nanosheets and hexagonal plates enriched with zinc oxide. Composites synthesized in this way display high antimicrobial activity against bacteria, due mainly to the release of Zn2+ ions into the solution. The greatest antimicrobial activity is observed in composites that simultaneously contain AlOOH, Al, ZnO, and Zn phases. The strong migration of Zn2+ ion is due to the structure of these composites, in which the active zinc surface grows as a result of the availability of ZnO plates located between the boehmite nanosheets. The boehmite nanosheets ensure stability of the composite structure and electrostatic interaction with bacteria.
机译：通过在氩气氛中通过铝和锌线的关节电爆炸，通过氧化水 - 乙醇混合物中的不同相组合物的多孔复合材料通过氩气的铝和锌线的接合电气爆炸。发现铝的氧化和勃姆石纳米片的形成进行含有720wt％的水的溶液。在20wt％超过20wt％的水含量下，铝的几乎完全氧化之后是锌氧化的发作，导致含有富含氧化锌的致胶质石纳米片和六边形板的复合材料的形成。以这种方式合成的复合材料显示出对细菌的高抗微生物活性，主要是由于Zn2 +离子释放到溶液中。在复合材料中观察到最大的抗微生物活性，同时含有AlOOH，Al，ZnO和Zn阶段。 Zn2 +离子的强烈迁移是由于这些复合材料的结构，其中活性锌表面由于位于勃姆石纳米片之间的Zno板的可用性而产生。 BoehMite纳米蛋白酶确保复合结构的稳定性和与细菌的静电相互作用。

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