Preparation of platinum nanoparticles that are dispersible in water over a wide pH range

Takanori Imai; Yoshimoto Abe; Keishi Nishio; Ryuji Tamura; Hirobumi Shibata; Tohru Kineri; Takahiro Gunji

doi:10.1038/pj.2012.173

Preparation of platinum nanoparticles that are dispersible in water over a wide pH range

Takanori Imai, Yoshimoto Abe, Keishi Nishio, Ryuji Tamura, Hirobumi Shibata, Tohru Kineri, Takahiro Gunji

研究成果: Article › 査読

2 被引用数 (Scopus)

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Platinum nanoparticles stabilized by linear polyethyleneimine (LPEI) were prepared by the liquid-phase reduction of chloroplatinic(IV) acid with sodium borohydride. The average radii of particles were 3.26 and 1.76 nm when the molecular weights of LPEI were 25 000 and 2150, respectively. These nanoparticles were well dispersed in water in the pH range of 1-6. Branched polyethyleneimine also provided nanoparticles that dispersed in water in the pH range of 0-8. Linear poly(ethyleneimine-co-N-methylethyleneimine) gave nanoparticles that dispersed in water in the pH range of -1 to 15. The dispersibility of the nanoparticles decreased with increasing content of the N-methyl group.

本文言語	English
ページ（範囲）	540-544
ページ数	5
ジャーナル	Polymer Journal
巻	45
号	5
DOI	https://doi.org/10.1038/pj.2012.173
出版ステータス	Published - 5月 2013

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title = "Preparation of platinum nanoparticles that are dispersible in water over a wide pH range",

abstract = "Platinum nanoparticles stabilized by linear polyethyleneimine (LPEI) were prepared by the liquid-phase reduction of chloroplatinic(IV) acid with sodium borohydride. The average radii of particles were 3.26 and 1.76 nm when the molecular weights of LPEI were 25 000 and 2150, respectively. These nanoparticles were well dispersed in water in the pH range of 1-6. Branched polyethyleneimine also provided nanoparticles that dispersed in water in the pH range of 0-8. Linear poly(ethyleneimine-co-N-methylethyleneimine) gave nanoparticles that dispersed in water in the pH range of -1 to 15. The dispersibility of the nanoparticles decreased with increasing content of the N-methyl group.",

keywords = "acidic water, basic water, dispersion, platinum nanoparticles, polyethyleneimine",

author = "Takanori Imai and Yoshimoto Abe and Keishi Nishio and Ryuji Tamura and Hirobumi Shibata and Tohru Kineri and Takahiro Gunji",

note = "Funding Information: This research was supported by CLUSTER (the second stage) of the Ministry of Education, Culture, Sports Science, and Technology, Japan.",

year = "2013",

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doi = "10.1038/pj.2012.173",

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AU - Imai, Takanori

AU - Abe, Yoshimoto

AU - Nishio, Keishi

AU - Tamura, Ryuji

AU - Shibata, Hirobumi

AU - Kineri, Tohru

AU - Gunji, Takahiro

N1 - Funding Information: This research was supported by CLUSTER (the second stage) of the Ministry of Education, Culture, Sports Science, and Technology, Japan.

PY - 2013/5

Y1 - 2013/5

N2 - Platinum nanoparticles stabilized by linear polyethyleneimine (LPEI) were prepared by the liquid-phase reduction of chloroplatinic(IV) acid with sodium borohydride. The average radii of particles were 3.26 and 1.76 nm when the molecular weights of LPEI were 25 000 and 2150, respectively. These nanoparticles were well dispersed in water in the pH range of 1-6. Branched polyethyleneimine also provided nanoparticles that dispersed in water in the pH range of 0-8. Linear poly(ethyleneimine-co-N-methylethyleneimine) gave nanoparticles that dispersed in water in the pH range of -1 to 15. The dispersibility of the nanoparticles decreased with increasing content of the N-methyl group.

AB - Platinum nanoparticles stabilized by linear polyethyleneimine (LPEI) were prepared by the liquid-phase reduction of chloroplatinic(IV) acid with sodium borohydride. The average radii of particles were 3.26 and 1.76 nm when the molecular weights of LPEI were 25 000 and 2150, respectively. These nanoparticles were well dispersed in water in the pH range of 1-6. Branched polyethyleneimine also provided nanoparticles that dispersed in water in the pH range of 0-8. Linear poly(ethyleneimine-co-N-methylethyleneimine) gave nanoparticles that dispersed in water in the pH range of -1 to 15. The dispersibility of the nanoparticles decreased with increasing content of the N-methyl group.

KW - acidic water

KW - basic water

KW - dispersion

KW - platinum nanoparticles

KW - polyethyleneimine

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U2 - 10.1038/pj.2012.173

DO - 10.1038/pj.2012.173

M3 - Article

AN - SCOPUS:84877621226

VL - 45

SP - 540

EP - 544

JO - Polymer Journal

JF - Polymer Journal

SN - 0032-3896

IS - 5

ER -

Preparation of platinum nanoparticles that are dispersible in water over a wide pH range

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