Preparation and Growth Mechanism of Pt/Cu Alloy Nanoparticles by Sputter Deposition onto a Liquid Polymer

Lianlian Deng, Mai Thanh Nguyen, Shuang Mei, Tomoharu Tokunaga, Masaki Kudo, Syo Matsumura, Tetsu Yonezawa

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We use a green sputtering technique to deposit a Pt/Cu alloy target on liquid polyethylene glycol (PEG) to obtain well-dispersed and stable Pt29Cu71 alloy nanoparticles (NPs). The effects of sputtering current, rotation speed of the stirrer, sputtering time, sputtering period, and temperature of PEG on the particle size are studied systematically. Our key results demonstrate that the aggregation and growth of Pt/Cu alloy NPs occurred at the surface as well as inside the liquid polymer after the particles landed on the liquid surface. According to particle size analysis, a low sputtering current, high rotation speed for the stirrer, short sputtering period, and short sputtering time are found to be favorable for producing small-sized single crystalline alloy NPs. On the other hand, varying the temperature of the liquid PEG does not have any significant impact on the particle size. Thus, our findings shed light on controlling NP growth using the newly developed green sputtering deposition technique.

Original languageEnglish
JournalLangmuir
DOIs
Publication statusPublished - Jan 1 2019

Fingerprint

Sputter deposition
Sputtering
Polymers
sputtering
Nanoparticles
nanoparticles
preparation
polymers
Liquids
liquids
Polyethylene glycols
glycols
polyethylenes
Particle size
liquid surfaces
Particle size analysis
Particles (particulate matter)
high current
Deposits
Agglomeration

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Cite this

Preparation and Growth Mechanism of Pt/Cu Alloy Nanoparticles by Sputter Deposition onto a Liquid Polymer. / Deng, Lianlian; Nguyen, Mai Thanh; Mei, Shuang; Tokunaga, Tomoharu; Kudo, Masaki; Matsumura, Syo; Yonezawa, Tetsu.

In: Langmuir, 01.01.2019.

Research output: Contribution to journalArticle

Deng, Lianlian ; Nguyen, Mai Thanh ; Mei, Shuang ; Tokunaga, Tomoharu ; Kudo, Masaki ; Matsumura, Syo ; Yonezawa, Tetsu. / Preparation and Growth Mechanism of Pt/Cu Alloy Nanoparticles by Sputter Deposition onto a Liquid Polymer. In: Langmuir. 2019.
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