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Size Control of Monodispersed Pt Nanoparticles and Their 2D Organization by Electrophoretic Deposition
Abstract
We describe a simple method to control the size of Pt nanoparticles with the use of an alcohol reduction. They then are assembled on the electrode by an electrophoretic deposition. The mean diameter of monodispersed Pt nanoparticles can be controlled from 19 to 33 Å in one-step reaction by changing the kind and/or the concentration of alcohol in water and the amount of protective polymer, poly( N -vinyl-2-pyrrolidone) (PVP). The monodispersed Pt nanoparticles of smaller diameter are obtained in the order of methanol > ethanol > 1-propanol, indicating that a faster reduction rate of [PtCl 6 ] 2- ions is an important factor to produce the smaller particles. The particle diameter decreases linearly with concentration of alcohol in water. Furthermore, increasing the amount of PVP makes the size of Pt nanoparticles smaller, the size distribution remaining quite narrow. By the combination of the one-step reaction with the stepwise growth reaction, Pt nanoparticles of arbitrary diameter in the range 19−50 Å can be obtained. The Pt nanoparticles obtained here have fcc structures such as bulk Pt. By using an electrophoretic deposition, more Pt nanoparticles move toward the anode with the increase of both the applied voltage and the electrophoretic time to form the Pt nanoparticle monolayer. Using the high concentration of Pt dispersion is effective to form the Pt nanoparticle monolayer.
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Citations
Cited by
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Chen, J., Herricks, T., & Xia, Y. (2005) · Angewandte Chemie International Edition · doi:10.1002/anie.200462668 · Cited by 414
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Hara, Y., Minami, N., Matsumoto, H., & Itagaki, H. (2007) · Applied Catalysis A: General · doi:10.1016/j.apcata.2007.08.030 · Cited by 95
Park, K. C., Jang, I. Y., Wongwiriyapan, W., Morimoto, S., Kim, Y. J., Jung, Y. C., Toya, T., & Endo, M. (2010) · Journal of Materials Chemistry · doi:10.1039/b923153f · Cited by 66
Sharma, R., Wang, Y., Li, F., Chamier, J., & Andersen, S. M. (2019) · ACS Omega · doi:10.1021/acsomega.9b02351 · Cited by 49
Wang, Y., Laborda, E., Tschulik, K., Damm, C., Molina, A., & Compton, R. G. (2014) · Nanoscale · doi:10.1039/c4nr03850a · Cited by 33
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Metadata
- Authors
- Teranishi, T., Hosoe, M., Tanaka, T., & Miyake, M.
- Venue
- The Journal of Physical Chemistry B
- Publisher
- American Chemical Society (ACS)
- Published
- 1999-04-24
- Volume
- 103
- Issue
- 19
- Pages
- 3818-3827
- ISSN
- 1520-5207 (ISSN-L)
- 1520-6106
- OpenAlex
- W2037947197
- Cited by
- 662
- References
- 0
- FWCI
- 14.68
- Type
- journal article
- Language
- en
- Open access
- closed
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