Silver-based crystalline nanoparticles, microbially fabricated

被引：935

作者：

Klaus, T ^{[1
]}

Joerger, R ^{[1
]}

Olsson, E ^{[1
]}

Granqvist, CG ^{[1
]}

机构：

[1] Uppsala Univ, Angstrom Lab, Dept Mat Sci, SE-75121 Uppsala, Sweden

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 1999年 / 96卷 / 24期

关键词：

D O I：

10.1073/pnas.96.24.13611

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

One mechanism of silver resistance in microorganisms is accumulation of the metal ions in the cell. Here, we report on the phenomenon of biosynthesis of silver-based single crystals with well-defined compositions and shapes, such as equilateral triangles and hexagons, in Pseudomonas stutzeri AG259. The crystals were up to 200 nm in size and were often located at the cell poles. Transmission electron microscopy, quantitative energy-dispersive x-ray analysis, and electron diffraction established that the crystals comprise at least three different types, found both in whole cells and thin sections. These Ag-containing crystals are embedded in the organic matrix of the bacteria. Their possible potential as organic-metal composites in thin film and surface coating technology is discussed.

引用

页码：13611 / 13614

页数：4

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