Статья

Sub-2 nm Single-Crystal Pt Nanoparticles via Sputtering onto a Liquid Polymer

Lianlian DengDivision of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, JapanMai Thanh NguyenDivision of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, JapanTetsu YonezawaDivision of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan

2018en

ABI

Аннотация

Matrix sputtering with the use of a low vapor pressure liquid as its matrix becomes a green technique to prepare nanoparticles dispersed in liquid. In the present study, we proposed using this method with polyethylene glycol (PEG, molecular weight = 600) as the liquid matrix to produce highly uniform Pt nanoparticles with a small size (below 2.0 nm) and a narrow size distribution. The results indicated that particle sizes were tailorable from 0.9 ± 0.3 to 1.4 ± 0.3 nm by varying the sputtering current (5-50 mA) with negligible particle aggregation that occurred in PEG during sputtering. The slight growth of the particle size observed after sputtering was attributed to the addition of free Pt atoms to the existing Pt nanoparticles. All samples formed stable dispersion in PEG for 5 month storage. This result suggested an advantage of using a liquid matrix to produce and stabilize nanoparticles.

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Идентификаторы

DOI: 10.1021/acs.langmuir.7b04274

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar