Synthesis of Platinum Nanoparticles by Reductive Crystallization Using Polyethyleneimine

Hideyuki Nagao; Masumi Ichiji; Izumi Hirasawa

doi:10.1002/ceat.201600656

Synthesis of Platinum Nanoparticles by Reductive Crystallization Using Polyethyleneimine

Hideyuki Nagao, Masumi Ichiji, Izumi Hirasawa

Research output: Contribution to journal › Article

10 Citations (Scopus)

Abstract

Sub-10-nm-sized Pt nanoparticles were synthesized by reducing Pt ions with NaBH₄, with the addition of polyethyleneimine (PEI) as a protective reagent. Well-dispersed Pt nanoparticles with a narrow size distribution were successfully produced. When lowering the pH of the PEI solution, cubic and tetrahedral nanoparticles were observed, while at a higher pH, only spherical nanoparticles were produced. In addition, by selecting a suitable concentration of PEI, the protective reagent itself can reduce Pt ions to generate Pt nanoparticles with diameters in the range of 12.9–70.7 nm. This shows the potential of one-pot synthesis of Pt nanoparticles by just adding Pt ions and PEI.

Original language	English
Pages (from-to)	1242-1246
Number of pages	5
Journal	Chemical Engineering and Technology
Volume	40
Issue number	7
DOIs	https://doi.org/10.1002/ceat.201600656
Publication status	Published - 2017 Jul 1

Keywords

Crystal size distribution
Platinum nanoparticles
Polyethyleneimine
Reductive crystallization

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Industrial and Manufacturing Engineering

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Nagao, H., Ichiji, M., & Hirasawa, I. (2017). Synthesis of Platinum Nanoparticles by Reductive Crystallization Using Polyethyleneimine. Chemical Engineering and Technology, 40(7), 1242-1246. https://doi.org/10.1002/ceat.201600656

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abstract = "Sub-10-nm-sized Pt nanoparticles were synthesized by reducing Pt ions with NaBH4, with the addition of polyethyleneimine (PEI) as a protective reagent. Well-dispersed Pt nanoparticles with a narrow size distribution were successfully produced. When lowering the pH of the PEI solution, cubic and tetrahedral nanoparticles were observed, while at a higher pH, only spherical nanoparticles were produced. In addition, by selecting a suitable concentration of PEI, the protective reagent itself can reduce Pt ions to generate Pt nanoparticles with diameters in the range of 12.9–70.7 nm. This shows the potential of one-pot synthesis of Pt nanoparticles by just adding Pt ions and PEI.",

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