Effects of heat treatment and poly(vinylpyrrolidone) (PVP) polymer on electrocatalytic activity of polyhedral Pt nanoparticles towards their methanol oxidation

Nguyen Viet Long; Michitaka Ohtaki; Masayuki Nogami; Tong Duy Hien

doi:10.1007/s00396-011-2460-6

Effects of heat treatment and poly(vinylpyrrolidone) (PVP) polymer on electrocatalytic activity of polyhedral Pt nanoparticles towards their methanol oxidation

Nguyen Viet Long, Michitaka Ohtaki, Masayuki Nogami, Tong Duy Hien

Research output: Contribution to journal › Article › peer-review

65 Citations (Scopus)

Abstract

In this paper, the polyhedral Pt nanoparticles under control were prepared by polyol method using AgNO₃ and poly(vinylpyrrolidone) (PVP) in the reduction of H₂PtCl₆ with ethylene glycol (EG). Transmission electron microscopy (TEM) and high resolution (HR) TEM measurements were used to investigate their characterization. In the case of the previous removal of PVP by washing and heating at 300°C, the specific morphologies of polyhedral Pt nanoparticles were still observed. However, the removal of PVP only by heat treatment at 300°C without washing causes the significant variation of their morphology. The large Pt particles were observed in the self-aggregation and assembly of the as-prepared polyhedral Pt nanoparticles. The pure Pt nanoparticles by washing and heat treatment showed the electrocatalytic property better than PVP-Pt nanoparticles by heat treatment due to the incomplete removal of PVP and by-products from AgNO₃. Therefore, the removal modes of PVP without changing their characterization are required to obtain the good catalytic performance.

Original language	English
Pages (from-to)	1373-1386
Number of pages	14
Journal	Colloid and Polymer Science
Volume	289
Issue number	12
DOIs	https://doi.org/10.1007/s00396-011-2460-6
Publication status	Published - Aug 2011

All Science Journal Classification (ASJC) codes

Physical and Theoretical Chemistry
Polymers and Plastics
Colloid and Surface Chemistry
Materials Chemistry

Access to Document

10.1007/s00396-011-2460-6

Cite this

@article{dea227c7b98a4b7b83812c862089e320,

title = "Effects of heat treatment and poly(vinylpyrrolidone) (PVP) polymer on electrocatalytic activity of polyhedral Pt nanoparticles towards their methanol oxidation",

abstract = "In this paper, the polyhedral Pt nanoparticles under control were prepared by polyol method using AgNO3 and poly(vinylpyrrolidone) (PVP) in the reduction of H2PtCl6 with ethylene glycol (EG). Transmission electron microscopy (TEM) and high resolution (HR) TEM measurements were used to investigate their characterization. In the case of the previous removal of PVP by washing and heating at 300°C, the specific morphologies of polyhedral Pt nanoparticles were still observed. However, the removal of PVP only by heat treatment at 300°C without washing causes the significant variation of their morphology. The large Pt particles were observed in the self-aggregation and assembly of the as-prepared polyhedral Pt nanoparticles. The pure Pt nanoparticles by washing and heat treatment showed the electrocatalytic property better than PVP-Pt nanoparticles by heat treatment due to the incomplete removal of PVP and by-products from AgNO3. Therefore, the removal modes of PVP without changing their characterization are required to obtain the good catalytic performance.",

author = "Long, {Nguyen Viet} and Michitaka Ohtaki and Masayuki Nogami and Hien, {Tong Duy}",

year = "2011",

month = aug,

doi = "10.1007/s00396-011-2460-6",

language = "English",

volume = "289",

pages = "1373--1386",

journal = "Colloid and Polymer Science",

issn = "0303-402X",

publisher = "Springer Verlag",

number = "12",

}

TY - JOUR

T1 - Effects of heat treatment and poly(vinylpyrrolidone) (PVP) polymer on electrocatalytic activity of polyhedral Pt nanoparticles towards their methanol oxidation

AU - Long, Nguyen Viet

AU - Ohtaki, Michitaka

AU - Nogami, Masayuki

AU - Hien, Tong Duy

PY - 2011/8

Y1 - 2011/8

N2 - In this paper, the polyhedral Pt nanoparticles under control were prepared by polyol method using AgNO3 and poly(vinylpyrrolidone) (PVP) in the reduction of H2PtCl6 with ethylene glycol (EG). Transmission electron microscopy (TEM) and high resolution (HR) TEM measurements were used to investigate their characterization. In the case of the previous removal of PVP by washing and heating at 300°C, the specific morphologies of polyhedral Pt nanoparticles were still observed. However, the removal of PVP only by heat treatment at 300°C without washing causes the significant variation of their morphology. The large Pt particles were observed in the self-aggregation and assembly of the as-prepared polyhedral Pt nanoparticles. The pure Pt nanoparticles by washing and heat treatment showed the electrocatalytic property better than PVP-Pt nanoparticles by heat treatment due to the incomplete removal of PVP and by-products from AgNO3. Therefore, the removal modes of PVP without changing their characterization are required to obtain the good catalytic performance.

AB - In this paper, the polyhedral Pt nanoparticles under control were prepared by polyol method using AgNO3 and poly(vinylpyrrolidone) (PVP) in the reduction of H2PtCl6 with ethylene glycol (EG). Transmission electron microscopy (TEM) and high resolution (HR) TEM measurements were used to investigate their characterization. In the case of the previous removal of PVP by washing and heating at 300°C, the specific morphologies of polyhedral Pt nanoparticles were still observed. However, the removal of PVP only by heat treatment at 300°C without washing causes the significant variation of their morphology. The large Pt particles were observed in the self-aggregation and assembly of the as-prepared polyhedral Pt nanoparticles. The pure Pt nanoparticles by washing and heat treatment showed the electrocatalytic property better than PVP-Pt nanoparticles by heat treatment due to the incomplete removal of PVP and by-products from AgNO3. Therefore, the removal modes of PVP without changing their characterization are required to obtain the good catalytic performance.

UR - http://www.scopus.com/inward/record.url?scp=80052502617&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80052502617&partnerID=8YFLogxK

U2 - 10.1007/s00396-011-2460-6

DO - 10.1007/s00396-011-2460-6

M3 - Article

AN - SCOPUS:80052502617

SN - 0303-402X

VL - 289

SP - 1373

EP - 1386

JO - Colloid and Polymer Science

JF - Colloid and Polymer Science

IS - 12

ER -

Effects of heat treatment and poly(vinylpyrrolidone) (PVP) polymer on electrocatalytic activity of polyhedral Pt nanoparticles towards their methanol oxidation

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this