TY - JOUR
T1 - Quantification of metallic nanoparticle morphology on TiO2 using HAADF-STEM tomography
AU - Sueda, S.
AU - Yoshida, K.
AU - Tanaka, N.
N1 - Funding Information:
The present work is partly supported by a grant for “Open advanced facility initiative for innovation” and a grant for “Intellectual innovation for regional industries”. We also thank a grant of JSPS Research Fellowships for Young Scientists (K.Y.).
PY - 2010/8
Y1 - 2010/8
N2 - Electron tomography is applied to photocatalytic gold/titanium oxide and gold/silver/titanium oxide samples. In order to obtain a tilt series for the electron tomography measurement, high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) is used under cryogenic conditions. Dedicated programs have been developed for measuring volume, surface area, thickness distribution and nearest-neighbour distance of metallic nanoparticles on samples. Using these quantification programs, the 3D morphology of gold and silver nanoparticles is accurately characterized. We paid particular attention to the quantitative measurement of surface area. The measurement error of the method and appropriate magnification are defined using spherical nanoparticle models. We measured the 3D morphology of gold nanoparticles supported on titanium oxide (total volume=6.5×105[nm3], surface area=1.4×105[nm2], and average nearest-neighbour distance=40[nm]).
AB - Electron tomography is applied to photocatalytic gold/titanium oxide and gold/silver/titanium oxide samples. In order to obtain a tilt series for the electron tomography measurement, high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) is used under cryogenic conditions. Dedicated programs have been developed for measuring volume, surface area, thickness distribution and nearest-neighbour distance of metallic nanoparticles on samples. Using these quantification programs, the 3D morphology of gold and silver nanoparticles is accurately characterized. We paid particular attention to the quantitative measurement of surface area. The measurement error of the method and appropriate magnification are defined using spherical nanoparticle models. We measured the 3D morphology of gold nanoparticles supported on titanium oxide (total volume=6.5×105[nm3], surface area=1.4×105[nm2], and average nearest-neighbour distance=40[nm]).
KW - Electron tomography
KW - Gold
KW - Metallic nanoparticles
KW - STEM
KW - Scanning transmission electron microscopy
KW - Titanium oxide
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U2 - 10.1016/j.ultramic.2010.04.003
DO - 10.1016/j.ultramic.2010.04.003
M3 - Article
C2 - 20434842
AN - SCOPUS:77955558592
VL - 110
SP - 1120
EP - 1127
JO - Ultramicroscopy
JF - Ultramicroscopy
SN - 0304-3991
IS - 9
ER -