NDLI: Preparation of functionalized platinum nanoparticles: a comparison of different methods and reagents

Content Provider	Springer Nature Link
Author	Liu, Guangliang Arella Jiménez, M. Josefina Carter, C. Barry Agrios, Alexander G.
Copyright Year	2013
Abstract	A number of methods exist for the preparation of platinum nanoparticles, which have numerous industrial applications, especially as catalysts. In this study, we compared three methods for preparing Pt particles with diameters in the range of 1–3 nm. Method 1 involves base-catalyzed reduction of Pt(IV) in ethylene glycol. Methods 2 and 3 are based on phase transfer of a Pt(IV) precursor from water to toluene containing a phase-transfer catalyst (PTC) followed by reduction by NaBH$_{4}$ and capping by a stabilizing agent. The latter two methods differ in the sequence of addition of stabilizer and reducing agent, and in the nature of the stabilizer. We compared the resulting mean particle sizes using transmission electron microscopy and dynamic light scattering. Our study included a systematic comparison of seven reaction parameters for Methods 2 and 3: the method (sequence of addition), Pt precursor, stabilizer molecule, stabilizer concentration, PTC, PTC concentration, and solvents for Pt suspension. Our data show that, both qualitatively and quantitatively by means of analysis of variance, three of these parameters are significant: method, stabilizer, and PTC. A linear regression allows for prediction of particle size based on these variables and fits the experimental data well, allowing particle size to be adjusted in the range of 1.6–2.2 nm. A gravimetric determination of the yield of the three methods found that while Methods 1 and 2 convert at least 85 % of the Pt precursor to Pt nanoparticles, for Method 3, the yield was less than 30 %.
Starting Page	1
Ending Page	13
Page Count	13
File Format	PDF
ISSN	13880764
Journal	Journal of Nanoparticle Research
Volume Number	15
Issue Number	6
e-ISSN	1572896X
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-06-08
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Platinum nanoparticles Nanocatalysts Phase-transfer synthesis ANOVA Nanotechnology Inorganic Chemistry Characterization and Evaluation of Materials Physical Chemistry Optics, Optoelectronics, Plasmonics and Optical Devices
Content Type	Text
Resource Type	Article
Subject	Chemistry Nanoscience and Nanotechnology Atomic and Molecular Physics, and Optics Condensed Matter Physics Bioengineering Modeling and Simulation

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