Biogenic formation of photoactive arsenic-sulfide nanotubes by Shewanella sp strain HN-41

被引：109

作者：

Lee, Ji-Hoon ^{[1
]}

Kim, Min-Gyu ^{[3
]}

Yoo, Bongyoung ^{[4
]}

Myung, Nosang V. ^{[4
]}

Maeng, Jongsun ^{[2
]}

Lee, Takhee ^{[2
]}

Dohnalkova, Alice C. ^{[5
]}

Fredrickson, James K. ^{[5
]}

Sadowsky, Michael J. ^{[6
]}

Hur, Hor-Gil ^{[1
]}

机构：

[1] Gwangju Inst Sci & Technol, Int Environm Res Ctr, Dept Environm Sci, Kwangju 500712, South Korea

[2] Gwangju Inst Sci & Technol, Dept Mat Sci & Engn, Kwangju 500712, South Korea

[3] Pohang Accelerator Lab, Pohang 790784, South Korea

[4] Univ Calif Riverside, Ctr Nanoscale Sci & Engn, Dept Chem & Environm Engn, Riverside, CA 92521 USA

[5] Pacific NW Natl Lab, Environm Mol Sci Lab, Div Biol Sci, Richland, WA 99352 USA

[6] Univ Minnesota, Dept Soil Water & Climate, Inst Biotechnol, St Paul, MN 55108 USA

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2007年 / 104卷 / 51期

关键词：

D O I：

10.1073/pnas.0707595104

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：

Microorganisms facilitate the formation of a wide range of minerals that have unique physical and chemical properties as well as morphologies that are not produced by abiotic processes. Here, we report the production of an extensive extracellular network of filamentous, arsenic-sulfide (As-S) nanotubes (20-100 nm in diameter by approximate to 30 mu m in length) by the dissimilatory metal-reducing bacterium Shewanella sp. HN-41. The As-S nanotubes, formed via the reduction of As(V) and S2O32-, were initially amorphous As2S3 but evolved with increasing incubation time toward polycrystalline phases of the chalcogenide minerals realgar (ASS) and duranusite (As4S). Upon maturation, the As-S nanotubes behaved as metals and semiconductors in terms of their electrical and photoconductive proper-ties, respectively. The As-S nanotubes produced by Shewanella may provide useful materials for novel nano- and opto-electronic devices.

引用

页码：20410 / 20415

页数：6

共 37 条

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