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Volumn 11, Issue 4, 1999, Pages 1035-1047

Polyoxoanion- and tetrabutylammonium-stabilized, near-monodisperse, 40 ± 6 Å Rh(0)∼1500 to Rh(0)∼3700 nanoclusters: Synthesis, characterization, and hydrogenation catalysis

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Indexed keywords


EID: 0000597407     PISSN: 08974756     EISSN: None     Source Type: Journal    
DOI: 10.1021/cm980699w     Document Type: Article
Times cited : (80)

References (60)
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    • (e) A superb series of papers, complete with a record of the insightful comments by the experts attending the conference, is available in: Faraday Discuss., Chem. Soc. 1991, 92, 1-300.
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    • Ugo, R., Ed.; Kluwer: Dordrecht, The Netherlands; Chapter 1
    • (g) Schmid, G. In Aspects of Homogeneous Catalysis; Ugo, R., Ed.; Kluwer: Dordrecht, The Netherlands, 1990; Chapter 1.
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    • Schmid, G.1
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    • in press
    • (k) A Review of Modern Transition-Metal Nanoclusters: Their Synthesis, Characterization, and Applications in Catalysis. Aiken, J. D., III; Finke, R. G. J. Mol. Catal. A: Chem. 1999, in press.
    • (1999) J. Mol. Catal. A: Chem.
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    • Lin, Y.; Finke, R. G. Inorg. Chem. 1994, 33, 4891-4910. This paper reports how we discovered the Ir(0) nanoclusters (by developing a more general solution to the classic "Is it heterogeneous, or homogeneous catalysis" problem).
    • (1994) Inorg. Chem. , vol.33 , pp. 4891-4910
    • Lin, Y.1    Finke, R.G.2
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    • We have recently used Rh(0) nanoclusters to demonstrate the effect that H2 gas-to-solution mass-transfer limitations have on the resulting nanoclusters, namely the need to avoid mass-transfer conditions in the synthesis of near-monodisperse nanoclusters: Aiken, J. D., III; Finke, R. G. J. Am. Chem. Soc. 1998, 120, 9545-9554.
    • (1998) J. Am. Chem. Soc. , vol.120 , pp. 9545-9554
    • Aiken III, J.D.1    Finke, R.G.2
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    • The plasmon resonance gives rise to this tailing absorption; for a compilation of the absorption spectra of several colloidal metallic elements, see: Creighton, J. A.; Eadon, D. G.; J. Chem. Soc., Faraday Trans. 1991, 87, 3881.
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    • Creighton, J.A.1    Eadon, D.G.2
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    • Schmid correctly notes that "The higher the number the metal atoms the more probable deviations from the ideal magic number will be. The controlled synthesis of such large, chemically stabilized clusters will become more difficult going from shell to shell." Developments in Transition Metal Cluster ChemistrysThe Way to Large Clusters. Schmid, G. Struct. Bonding 1985, 62, 51.
    • (1985) Struct. Bonding , vol.62 , pp. 51
    • Schmid, G.1
  • 39
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    • see p 719
    • Indeed, some nanoclusters, such as those of Six or Nax, are believed to have "fluidlike" surfaces, with many structures within even 0.1 eV above the equilibrium structures. See Brus and Siegel's discussion, especially p 719 in the reference which follows, where theynote that "total energy calculations have shown that there are many metastable configurations in a 0.1 eV (i.e., 2-3 kcal/mol) range above the equilibrium state, and that their number increases significantly with the cluster size": Research Opportunities on Clusters and Cluster- Assembled MaterialssA Department of Energy, Council on Materials Science Panal Report. Andres, R. P.; et al. J. Mater. Res. 1989, 4, 704; see p 719.
    • (1989) J. Mater. Res. , vol.4 , pp. 704
    • Andres, R.P.1
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    • For the aggregation of Au clusters under the TEM electron beam see: Schmid, G. Struct. Bonding 1985, 62, 51-85.
    • (1985) Struct. Bonding , vol.62 , pp. 51-85
    • Schmid, G.1
  • 43
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    • (b) For an account where the stabilizing ligand shell is lost and the Au nuclei rearrange see: Schmid, G. Polyhedron 1988, 7, 2321-2329.
    • (1988) Polyhedron , vol.7 , pp. 2321-2329
    • Schmid, G.1
  • 44
    • 0345977867 scopus 로고
    • (c) For the observation of rapid changes in the structure and size of Pt55 clusters, and for accounts of mobile surface atoms in nanoclusters under a TEM beam, see: Schmid, G. Chem. Rev. 1992, 92, 1709-1727.
    • (1992) Chem. Rev. , vol.92 , pp. 1709-1727
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    • (d) For individual crystallite aggregation under a TEM beam see: Che, M; Bennet, C. O. Adv. Catal. 1989, 36, 55.
    • (1989) Adv. Catal. , vol.36 , pp. 55
    • Che, M.1    Bennet, C.O.2
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    • 4th ed.; Clarendon Press: Oxford, England
    • See Table 29.3 in: Wells, A. F. Structural Inorganic Chemistry, 4th ed.; Clarendon Press: Oxford, England, 1975; p 1015.
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    • Porterfield, W. W. Inorganic Chemistry; Addison-Wesley Publishing: Reading, MA, 1983; p 84.
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    • (a) Weiner, H.; Aiken, J. D., III; Finke, R. G. Inorg. Chem. 1996, 35, 7905- 7913 and references therein. Note that this manuscript has two typographical errors: p 7910, right-hand column, 12th line: "84% excess" should read "2% excess"; p 7910, footnote 20, 4th line: "5%" should read "0.5%".
    • (1996) Inorg. Chem. , vol.35 , pp. 7905-7913
    • Weiner, H.1    Aiken III, J.D.2    Finke, R.G.3


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