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 |
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Pages (from-to) | 1242-1246 |
Number of pages | 5 |
Journal | Chemical Engineering and Technology |
Volume | 40 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2017 Jul |
Keywords
- Crystal size distribution
- Platinum nanoparticles
- Polyethyleneimine
- Reductive crystallization
ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)
- Industrial and Manufacturing Engineering