TY - JOUR
T1 - Biogenic formation of photoactive arsenic-sulfide nanotubes by Shewanella sp. strain HN-41
AU - Lee, Ji Hoon
AU - Kim, Min Gyu
AU - Yoo, Bongyoung
AU - Myung, Nosang V.
AU - Maeng, Jongsun
AU - Lee, Takhee
AU - Dohnalkova, Alice C.
AU - Fredrickson, James K.
AU - Sadowsky, Michael J.
AU - Hur, Hor Gil
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2007/12/18
Y1 - 2007/12/18
N2 - 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 ≈30 μm 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 properties, respectively. The As-S nanotubes produced by Shewanella may provide useful materials for novel nano- and opto-electronic devices.
AB - 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 ≈30 μm 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 properties, respectively. The As-S nanotubes produced by Shewanella may provide useful materials for novel nano- and opto-electronic devices.
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U2 - 10.1073/pnas.0707595104
DO - 10.1073/pnas.0707595104
M3 - Article
C2 - 18077394
AN - SCOPUS:38049161788
SN - 0027-8424
VL - 104
SP - 20410
EP - 20415
JO - Proceedings of the National Academy of Sciences of the United States of America
JF - Proceedings of the National Academy of Sciences of the United States of America
IS - 51
ER -