Understanding nanoparticle porosity via nanoimpacts and XPS: electro-oxidation of platinum nanoparticle aggregates
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چکیده
منابع مشابه
Understanding nanoparticle porosity via nanoimpacts and XPS: electro-oxidation of platinum nanoparticle aggregates.
The porosity of platinum nanoparticle aggregates (PtNPs) is investigated electrochemically via particle-electrode impacts and by XPS. The mean charge per oxidative transient is measured from nanoimpacts; XPS shows the formation of PtO and PtO2 in relative amounts defined by the electrode potential and an average oxidation state is deduced as a function of potential. The number of platinum atoms...
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K E L L Y J . H I G G I N S , † H E E J U N G J U N G , ‡ D A V I D B . K I T T E L S O N , ‡ J E F F R E Y T . R O B E R T S , * , † A N D M I C H A E L R . Z A C H A R I A H * , † , ‡ Department of Chemistry, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, and Department of Mechanical Engineering, University of Minnesota, 111 Church Street SE, Minneapolis, Minne...
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ژورنال
عنوان ژورنال: Physical Chemistry Chemical Physics
سال: 2017
ISSN: 1463-9076,1463-9084
DOI: 10.1039/c7cp01737e