TY - JOUR
T1 - The location of gold nanoparticles on titania
T2 - A study by high resolution aberration-corrected electron microscopy and 3D electron tomography
AU - Hernández-Garrido, Juan C.
AU - Yoshida, Kenta
AU - Gai, Pratibha L.
AU - Boyes, Edward D.
AU - Christensen, Claus H.
AU - Midgley, Paul A.
N1 - Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2011/2/2
Y1 - 2011/2/2
N2 - Using HAADF-STEM electron tomography and aberration-corrected TEM/STEM electron microscopy, 3D reconstructions and high resolution images have been recorded of heterogeneous catalysts consisting of gold nanoparticles supported on titanium dioxide (anatase); these catalysts have gained attention recently because of their potential for use in many reactions with both industrial and environmental importance. We will illustrate how through the combination of high resolution images and segmented 3D tomographic data, structural features of the supported phase can be revealed which are normally not accessible through conventional imaging. The location of the nanoparticles preferentially at the grain boundaries, confirmed by these studies, is likely to influence the stability of the nanoparticles and is a key step in understanding and facilitating the development of better catalysts.
AB - Using HAADF-STEM electron tomography and aberration-corrected TEM/STEM electron microscopy, 3D reconstructions and high resolution images have been recorded of heterogeneous catalysts consisting of gold nanoparticles supported on titanium dioxide (anatase); these catalysts have gained attention recently because of their potential for use in many reactions with both industrial and environmental importance. We will illustrate how through the combination of high resolution images and segmented 3D tomographic data, structural features of the supported phase can be revealed which are normally not accessible through conventional imaging. The location of the nanoparticles preferentially at the grain boundaries, confirmed by these studies, is likely to influence the stability of the nanoparticles and is a key step in understanding and facilitating the development of better catalysts.
KW - 3D analysis
KW - Aberration-corrected electron microscopy
KW - Electron tomography
KW - Gold nanoparticles
KW - Heterogeneous catalysts
KW - Titania
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U2 - 10.1016/j.cattod.2010.06.010
DO - 10.1016/j.cattod.2010.06.010
M3 - Article
AN - SCOPUS:78951493182
VL - 160
SP - 165
EP - 169
JO - Catalysis Today
JF - Catalysis Today
SN - 0920-5861
IS - 1
ER -