Abstract
In this article, polyhedral and non-polyhedral Pt nanoparticles were prepared by modified polyol method using AgNO3 as a good structure-modifying agent. Their TEM and HRTEM images showed the particle size in the range of 8-16 nm for both the above cases. The structures and properties of the surfaces of Pt nanoparticles were investigated through cyclic voltammetry in dilute perchloric acid (HClO4) electrolyte solution. A comparison of the electrocatalytic property in methanol electrooxidation was made. Here, the effects of polyhedral and non-polyhedral morphologies on their catalytic properties were studied. The results revealed that the special catalytic activity of quasi-sphere non-polyhedral Pt nanoparticles is higher than that of polyhedral Pt nanoparticles. In addition, Pt nanoparticles of un-sharp and quasi-sphere morphologies exhibit the tolerance to poisoning species better than that of Pt nanoparticles of sharp and polyhedral morphologies due to the various morphologies of the catalyst surfaces in the chronoamperometric plots. Therefore, these experimental evidences showed the morphology-dependent catalytic property according to the various morphologies and complexity of their catalyst surfaces.
| Original language | English |
|---|---|
| Pages (from-to) | 5177-5191 |
| Number of pages | 15 |
| Journal | Journal of Nanoparticle Research |
| Volume | 13 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - Oct 1 2011 |
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All Science Journal Classification (ASJC) codes
- Bioengineering
- Atomic and Molecular Physics, and Optics
- Chemistry(all)
- Modelling and Simulation
- Materials Science(all)
- Condensed Matter Physics
Cite this
Synthesis and characterization of polyhedral and quasi-sphere non-polyhedral Pt nanoparticles : Effects of their various surface morphologies and sizes on electrocatalytic activity for fuel cell applications. / Long, Nguyen Viet; Ohtaki, Michitaka; Hien, Tong Duy; Jalem, Randy; Nogami, Masayuki.
In: Journal of Nanoparticle Research, Vol. 13, No. 10, 01.10.2011, p. 5177-5191.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Synthesis and characterization of polyhedral and quasi-sphere non-polyhedral Pt nanoparticles
T2 - Effects of their various surface morphologies and sizes on electrocatalytic activity for fuel cell applications
AU - Long, Nguyen Viet
AU - Ohtaki, Michitaka
AU - Hien, Tong Duy
AU - Jalem, Randy
AU - Nogami, Masayuki
PY - 2011/10/1
Y1 - 2011/10/1
N2 - In this article, polyhedral and non-polyhedral Pt nanoparticles were prepared by modified polyol method using AgNO3 as a good structure-modifying agent. Their TEM and HRTEM images showed the particle size in the range of 8-16 nm for both the above cases. The structures and properties of the surfaces of Pt nanoparticles were investigated through cyclic voltammetry in dilute perchloric acid (HClO4) electrolyte solution. A comparison of the electrocatalytic property in methanol electrooxidation was made. Here, the effects of polyhedral and non-polyhedral morphologies on their catalytic properties were studied. The results revealed that the special catalytic activity of quasi-sphere non-polyhedral Pt nanoparticles is higher than that of polyhedral Pt nanoparticles. In addition, Pt nanoparticles of un-sharp and quasi-sphere morphologies exhibit the tolerance to poisoning species better than that of Pt nanoparticles of sharp and polyhedral morphologies due to the various morphologies of the catalyst surfaces in the chronoamperometric plots. Therefore, these experimental evidences showed the morphology-dependent catalytic property according to the various morphologies and complexity of their catalyst surfaces.
AB - In this article, polyhedral and non-polyhedral Pt nanoparticles were prepared by modified polyol method using AgNO3 as a good structure-modifying agent. Their TEM and HRTEM images showed the particle size in the range of 8-16 nm for both the above cases. The structures and properties of the surfaces of Pt nanoparticles were investigated through cyclic voltammetry in dilute perchloric acid (HClO4) electrolyte solution. A comparison of the electrocatalytic property in methanol electrooxidation was made. Here, the effects of polyhedral and non-polyhedral morphologies on their catalytic properties were studied. The results revealed that the special catalytic activity of quasi-sphere non-polyhedral Pt nanoparticles is higher than that of polyhedral Pt nanoparticles. In addition, Pt nanoparticles of un-sharp and quasi-sphere morphologies exhibit the tolerance to poisoning species better than that of Pt nanoparticles of sharp and polyhedral morphologies due to the various morphologies of the catalyst surfaces in the chronoamperometric plots. Therefore, these experimental evidences showed the morphology-dependent catalytic property according to the various morphologies and complexity of their catalyst surfaces.
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U2 - 10.1007/s11051-011-0503-z
DO - 10.1007/s11051-011-0503-z
M3 - Article
AN - SCOPUS:80955144367
VL - 13
SP - 5177
EP - 5191
JO - Journal of Nanoparticle Research
JF - Journal of Nanoparticle Research
SN - 1388-0764
IS - 10
ER -