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Characterization of well faceted palladium nanoparticles supported on alumina by transmission electron microscopy and FT-IR spectroscopy of CO adsorption

Paper ID Volume ID Publish Year Pages File Format Full-Text
43153 45957 2009 11 PDF Available
Title
Characterization of well faceted palladium nanoparticles supported on alumina by transmission electron microscopy and FT-IR spectroscopy of CO adsorption
Abstract

Well faceted palladium nanoparticles (rods, cubes, tetrahedrons, polyhedrons) supported on alumina were synthesized by a seed-mediated growth technique. The quantification of the different exposed crystallographic planes of these supported palladium nanoparticles was firstly done by TEM analysis. To get more information about the exposed crystallographic planes, the amount of defects and the accessibility of palladium sites, infrared spectroscopy measurements of an adsorbed probe molecule (CO) were also performed and enabled to improve and complete the first TEM analysis. In fact, infrared measurements allowed to evidence, and likely to quantify, the presence of crystallographic planes and defects not seen by TEM. Finally, the preferential adsorption of CTAB (cetyltrimethylammonium bromide) on low coordinative crystallographic planes was also experimentally demonstrated.

Graphical abstractWell faceted palladium nanoparticles supported on alumina were synthesized by a seed-mediated growth technique. The quantification of the different exposed crystallographic planes of these supported palladium nanoparticles was done by TEM analysis. Infrared spectroscopy measurements of an adsorbed probe molecule (CO) allowed to evidence and to quantify the presence of crystallographic planes and defects not seen by TEM. Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Nanoparticles; Morphology; Palladium; FT-IR; CO
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Characterization of well faceted palladium nanoparticles supported on alumina by transmission electron microscopy and FT-IR spectroscopy of CO adsorption
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 352, Issues 1–2, 15 January 2009, Pages 50–60
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
You save - $31
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100% Money Back Guarantee
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