Origin of Agglomerates Observed in High Resolution Transmission Electron Microscope (HRTEM) Micrographs of a Catalyst Containing Platinum (II) Complexes Anchored on Phosphinated SiO2: Computer Simulation of HRTEM Images Full article
| Journal |
Journal of Molecular Catalysis (Continued after 1994 as Journal of Molecular Catalysis A: Chemical and Journal of Molecular Catalysis B: Enzymatic)
ISSN: 0304-5102 |
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| Output data | Year: 1994, Volume: 87, Number: 2-3, Pages: 231-242 Pages count : 12 DOI: 10.1016/0304-5102(93)E0223-4 | ||
| Tags | HRTEM images, platinum, silica-anchored complexes, simulation | ||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | Russian Foundation for Basic Research | 93-03-04836 |
Abstract:
Computer simulation has been applied to the interpretation of “spots on stems” images observed in HRTEM micrographs of a catalyst containing PtCl2 complexes anchored on phosphinated silica. Molecular models of isolated molecules P2 or P2·PtCl2 (P2 = diphosphine ligand covalently attached to the amorphous SiO2 layer), aggregates (“islands”) of anchored PT(II) complexes, [P2·PtCl2]n (n=2–5), and metel clusters Ptn (n=1–20) attached to the SiO2 surface via a graphite “stem” were constructed. Multislice programs were used to simulate HRTEM images of these models. The comparison of real images obtained using a JEM-100CX microscope with those simulated for various models shows that experimental HRTEM micrographs exhibit Ptn metal clusters on graphite “stems”. These objects appear to be the products of decomposition of initial [P2·PtCl2]n “islands” under the electron beam. The results emphasize the necessity of computer simulation for correct interpretation of HRTEM images, especially when the objects are sensitive to the heating effects of the electron beam.
Cite:
Chuvilin A.L.
, Moroz B.L.
, Likholobov V.A.
Origin of Agglomerates Observed in High Resolution Transmission Electron Microscope (HRTEM) Micrographs of a Catalyst Containing Platinum (II) Complexes Anchored on Phosphinated SiO2: Computer Simulation of HRTEM Images
Journal of Molecular Catalysis (Continued after 1994 as Journal of Molecular Catalysis A: Chemical and Journal of Molecular Catalysis B: Enzymatic). 1994. V.87. N2-3. P.231-242. DOI: 10.1016/0304-5102(93)E0223-4 WOS Scopus РИНЦ ANCAN OpenAlex
Origin of Agglomerates Observed in High Resolution Transmission Electron Microscope (HRTEM) Micrographs of a Catalyst Containing Platinum (II) Complexes Anchored on Phosphinated SiO2: Computer Simulation of HRTEM Images
Journal of Molecular Catalysis (Continued after 1994 as Journal of Molecular Catalysis A: Chemical and Journal of Molecular Catalysis B: Enzymatic). 1994. V.87. N2-3. P.231-242. DOI: 10.1016/0304-5102(93)E0223-4 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Jul 2, 1993 |
| Accepted: | Jul 23, 1993 |
| Published print: | Feb 4, 1994 |
| Published online: | Oct 2, 2001 |
Identifiers:
| Web of science: | WOS:A1994MW49900010 |
| Scopus: | 2-s2.0-0028763720 |
| Elibrary: | 23429839 |
| Chemical Abstracts: | 1994:201479 |
| Chemical Abstracts (print): | 120:201479 |
| OpenAlex: | W1996994764 |