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Inside Back Cover: Coating Platinum Nanoparticles with Methyl Radicals: Effects on Properties and Catalytic Implications (Chem. Eur. J. 52/2015)
Author(s) -
BarZiv Ronen,
Zilbermann Israel,
Shandalov Michael,
Shevchenko Vladimir,
Meyerstein Dan
Publication year - 2015
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201585203
Subject(s) - radical , platinum , platinum nanoparticles , catalysis , nanoparticle , coating , cover (algebra) , bar (unit) , chemistry , aqueous solution , chemical engineering , materials science , nanotechnology , organic chemistry , physics , meteorology , mechanical engineering , engineering
Methyl radicals bound to the surfaces of Pt 0 nanoparticles (NPs) suspended in aqueous solutions affects the chemical and physical properties of the NPs. Up to 75 % of the Pt 0 atoms surface can be covered and the rate constant, k ( . CH 3 + Pt 0 ‐NPs), decreases with increasing surface coverage, leading to competing reactions that gradually become dominant, affecting the composition of the products (see figure). The results suggest that the methyls do not diffuse on the surface of the Pt 0 ‐NPs; in this respect Pt 0 ‐NPs differ considerably from Ag 0 ‐NPs and Au 0 ‐NPs. For further details see the Full Paper by R. Bar‐Ziv, D. Meyerstein et al. on page 19000 ff.