Abstract
In this work, a simple, high-yield biomineralization process is reported for cobalt oxide nanostructures using Gram-positive bacteria, Bacillus subtilis, as the soft templates. Rod-type cobalt oxide is prepared at room temperature through an electrostatic interaction between the functional surface structures of the bacteria and the cobalt ions in an aqueous solution. Additionally, porous Co3O4 hollow rods are formed through a subsequent heat treatment at 300 °C. These rods have a high surface area and exhibited an excellent electrochemical performance for rechargeable Li-ion batteries. This facile, inexpensive, and environmentally benign synthesis for transition metal oxides with unique nanostructures can be used for several practical applications, such as batteries, catalysts, sensors, and supercapacitors.
Original language | English |
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Pages (from-to) | 443-449 |
Number of pages | 7 |
Journal | ACS nano |
Volume | 5 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2011 Jan 25 |
Externally published | Yes |
Keywords
- Bacillus subtilis
- Cobalt oxide
- Lithium-ion batteries
- Nanostructures
- Soft template
ASJC Scopus subject areas
- General Materials Science
- General Engineering
- General Physics and Astronomy