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Title: Size tunable elemental copper nanoparticles: extracellular synthesis by thermoanaerobic bacteria and capping molecules

Abstract

Bimodal sized elemental copper (Cu) nanoparticles (NPs) were synthesized from inexpensive oxidized copper salts by an extracellular metal-reduction process using anaerobic Thermoanaerobacter sp. X513 bacteria in aqueous solution. The bacteria nucleate NPs outside of the cell, and they control the Cu2+ reduction rate to form uniform crystallites with an average diameter of 1.75 0.46 m after 3-day incubation. To control the size and enhance air stability of Cu NPs, the reaction mixtures were supplemented with nitrilotriacetic acid as a chelator, and the surfactant capping agents oleic acid, oleylamine, ascorbic acid, or L-cysteine. Time-dependent UV-visible absorption measurements and XPS studies indicated well-suspended, bimodal colloidal Cu NPs (70 150 and 5 10 nm) with extended air-stability up to 300 min and stable Cu NP films surfaces with 14% oxidation after 20 days. FTIR spectroscopy suggested that these capping agents were effectively adsorbed on the NP surface providing oxidation resistance in aqueous and dry conditions. Compared to previously reported Cu NP syntheses, this biological process substantially reduced the requirement for hazardous organic solvents and chemical reducing agents, while reducing the levels of Cu oxide impurities in the product. This process was highly reproducible and scalable from 0.01 to 1-L batches.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Temperature Materials Lab. (HTML)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1185382
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Materials Chemistry C
Additional Journal Information:
Journal Volume: 3; Journal Issue: 3; Journal ID: ISSN 2050-7526
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Jang, Gyoung Gug, Jacobs, Christopher B., Gresback, Ryan G., Ivanov, Ilia N., Meyer, III, Harry M., Kidder, Michelle, Joshi, Pooran C., Jellison, Jr, Gerald Earle, Phelps, Tommy Joe, Graham, David E., and Moon, Ji Won. Size tunable elemental copper nanoparticles: extracellular synthesis by thermoanaerobic bacteria and capping molecules. United States: N. p., 2014. Web. doi:10.1039/C4TC02356K.
Jang, Gyoung Gug, Jacobs, Christopher B., Gresback, Ryan G., Ivanov, Ilia N., Meyer, III, Harry M., Kidder, Michelle, Joshi, Pooran C., Jellison, Jr, Gerald Earle, Phelps, Tommy Joe, Graham, David E., & Moon, Ji Won. Size tunable elemental copper nanoparticles: extracellular synthesis by thermoanaerobic bacteria and capping molecules. United States. https://doi.org/10.1039/C4TC02356K
Jang, Gyoung Gug, Jacobs, Christopher B., Gresback, Ryan G., Ivanov, Ilia N., Meyer, III, Harry M., Kidder, Michelle, Joshi, Pooran C., Jellison, Jr, Gerald Earle, Phelps, Tommy Joe, Graham, David E., and Moon, Ji Won. 2014. "Size tunable elemental copper nanoparticles: extracellular synthesis by thermoanaerobic bacteria and capping molecules". United States. https://doi.org/10.1039/C4TC02356K. https://www.osti.gov/servlets/purl/1185382.
@article{osti_1185382,
title = {Size tunable elemental copper nanoparticles: extracellular synthesis by thermoanaerobic bacteria and capping molecules},
author = {Jang, Gyoung Gug and Jacobs, Christopher B. and Gresback, Ryan G. and Ivanov, Ilia N. and Meyer, III, Harry M. and Kidder, Michelle and Joshi, Pooran C. and Jellison, Jr, Gerald Earle and Phelps, Tommy Joe and Graham, David E. and Moon, Ji Won},
abstractNote = {Bimodal sized elemental copper (Cu) nanoparticles (NPs) were synthesized from inexpensive oxidized copper salts by an extracellular metal-reduction process using anaerobic Thermoanaerobacter sp. X513 bacteria in aqueous solution. The bacteria nucleate NPs outside of the cell, and they control the Cu2+ reduction rate to form uniform crystallites with an average diameter of 1.75 0.46 m after 3-day incubation. To control the size and enhance air stability of Cu NPs, the reaction mixtures were supplemented with nitrilotriacetic acid as a chelator, and the surfactant capping agents oleic acid, oleylamine, ascorbic acid, or L-cysteine. Time-dependent UV-visible absorption measurements and XPS studies indicated well-suspended, bimodal colloidal Cu NPs (70 150 and 5 10 nm) with extended air-stability up to 300 min and stable Cu NP films surfaces with 14% oxidation after 20 days. FTIR spectroscopy suggested that these capping agents were effectively adsorbed on the NP surface providing oxidation resistance in aqueous and dry conditions. Compared to previously reported Cu NP syntheses, this biological process substantially reduced the requirement for hazardous organic solvents and chemical reducing agents, while reducing the levels of Cu oxide impurities in the product. This process was highly reproducible and scalable from 0.01 to 1-L batches.},
doi = {10.1039/C4TC02356K},
url = {https://www.osti.gov/biblio/1185382}, journal = {Journal of Materials Chemistry C},
issn = {2050-7526},
number = 3,
volume = 3,
place = {United States},
year = {Mon Nov 10 00:00:00 EST 2014},
month = {Mon Nov 10 00:00:00 EST 2014}
}

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Works referenced in this record:

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