Evidence of a unique electron donor-acceptor property for platinum nanoparticles as studied by XPS

Langmuir : the ACS Journal of Surfaces and Colloids
Limei QiuJiannian Yao

Abstract

In the interaction of PVP with Pt nanoparticles <7 nm in size, charge transfer is from carbonyl groups in PVP to Pt nanoparticles, whereas in the interaction of PVP with bulk Pt or Pt nanoparticles >25 nm in size, charge transfer is from Pt metal to the polymer side chain of PVP. There exists a critical nanoparticle size between 7 and 25 nm that would lead to a switch in the electron donor-acceptor property.

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Citations

Dec 20, 2013·Accounts of Chemical Research·Seiji YamazoeTatsuya Tsukuda
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