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An, Kwangjin
Advanced Nanocatalysis Lab (An Lab)
Research Interests
  • Nanoparticle catalytsts, catalytic activity, selectivity, and stability, strong metal-support interactions, biofuel conversion

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Colloid chemistry of nanocatalysts: A molecular view

Cited 32 times inthomson ciCited 32 times inthomson ci
Title
Colloid chemistry of nanocatalysts: A molecular view
Author
An, KwangjinAlayoglu, SelimEwers, TrevorSomorjai, Gabor A.
Keywords
Catalyst; Colloid; High pressure scanning tunneling microscopy (HPSTEM); In situ characterization; Mesoporous; Nanoparticle; Selectivity; Sum frequency generation vibrational spectroscopy (SFGVS); Surface; Turn over
Issue Date
2012-05
Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
Citation
JOURNAL OF COLLOID AND INTERFACE SCIENCE, v.373, no.1, pp.1 - 13
Abstract
Recent advances of a colloidal chemistry can offer great opportunities to fabricate and design nanocatalysts. Comprehensive understanding of a basic concept and theory of the colloidal synthetic chemistry facilitates to engineer elaborate nano-architectures such as bi- or multi-metallic, heterodimers, and core/shell. This colloidal solution technique not only enables to synthesize high surface mesoporous materials, but also provides a versatile tool to incorporate nanoparticles into mesoporous materials or onto substrates. For green chemistry, catalysis research has been pursued to design and fabricate a catalyst system that produces only one desired product (100% selectivity) at high turnover rates to reduce the production of undesirable wastes. Recent studies have shown that several molecular factors such as the surface structures, composition, and oxidation states affect the turnover frequency and reaction selectivity depending on the size, morphology, and composition of metal nanoparticles. Multipath reactions have been utilized to study the reaction selectivity as a function of size and shape of platinum nanoparticles. In the past, catalysts were evaluated and compared with characterizations before and after catalytic reaction. Much progress on in situ surface characterization techniques has permitted real-time monitoring of working catalysts under various conditions and provides molecular information during the reaction. © 2011 Elsevier Inc..
URI
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DOI
10.1016/j.jcis.2011.10.082
ISSN
0021-9797
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ECHE_Journal Papers
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