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Colloidal Polymerization of Polymer-Coated Ferromagnetic Nanoparticles into Cobalt Oxide Nanowires
Abstract
The preparation of polystyrene-coated cobalt oxide nanowires is reported via the colloidal polymerization of polymer-coated ferromagnetic cobalt nanoparticles (PS-CoNPs). Using a combination of dipolar nanoparticle assembly and a solution oxidation of preorganized metallic colloids, interconnected nanoparticles of cobalt oxide spanning micrometers in length were prepared. The colloidal polymerization of PS-CoNPs into cobalt oxide (CoO and Co(3)O(4)) nanowires was achieved by bubbling O(2) into PS-CoNP dispersions in 1,2-dichlorobenzene at 175 degrees C. Calcination of thin films of PS-coated cobalt oxide nanowires afforded Co(3)O(4) metal oxide materials. Transmission electron microscopy (TEM) revealed the formation of interconnected nanoparticles of cobalt oxide with hollow inclusions, arising from a combination of dipolar assembly of PS-CoNPs and the nanoscale Kirkendall effect in the oxidation reaction. Using a wide range of spectroscopic and electrochemical characterization techniques, we demonstrate that cobalt oxide nanowires prepared via this novel methodology were electroactive with potential applications as nanostructured electrodes for energy storage.
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The convergence of synthetic organic and polymer chemistries
Hawker, C. J., & Wooley, K. L. (2005) · Science · doi:10.1126/science.1109778 · Cited by 1,298
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Nanostructured transition metal oxides as advanced anodes for lithium-ion batteries
Zhang, J., & Yu, A. (2015) · Science Bulletin · doi:10.1007/s11434-015-0771-6 · Cited by 283
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Wang, J., Chao, D., Liu, J., Li, L., Lai, L., Lin, J., & Shen, Z. (2014) · Nano Energy · doi:10.1016/j.nanoen.2014.04.019 · Cited by 272
Kankala, R. K., Liu, C.-G., Yang, D.-Y., Wang, S.-B., & Chen, A.-Z. (2020) · Chemical Engineering Journal · doi:10.1016/j.cej.2019.123138 · Cited by 157
Metadata
- Authors
- Keng, P. Y., Kim, B. Y., Shim, I.-B., Sahoo, R., Veneman, P. E., Armstrong, N. R., Yoo, H., Pemberton, J. E., Bull, M. M., Griebel, J. J., Ratcliff, E. L., Nebesny, K. G., & Pyun, J.
- Venue
- ACS Nano
- Publisher
- American Chemical Society (ACS)
- Published
- 2009-10-02
- Volume
- 3
- Issue
- 10
- Pages
- 3143-3157
- ISSN
- 1936-0851 (ISSN-L)
- 1936-086X
- OpenAlex
- W1965251831
- Cited by
- 173
- References
- 1
- FWCI
- 7.50
- Type
- journal article
- Language
- en
- Open access
- closed
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- Keng, P. Y., Kim, B. Y., Shim, I.-B., Sahoo, R., Veneman, P. E., Armstrong, N. R., Yoo, H., Pemberton, J. E., Bull, M. M., Griebel, J. J., Ratcliff, E. L., Nebesny, K. G., & Pyun, J. (2009). Colloidal Polymerization of Polymer-Coated Ferromagnetic Nanoparticles into Cobalt Oxide Nanowires. ACS Nano. https://doi.org/10.1021/nn900483w
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