Alkylamine stabilized ruthenium nanocrystals: Faceting and branching

被引：25

作者：

Brink, Miranda Vanden ^{[1
]}

Peck, Matthea A. ^{[1
]}

More, Karren L. ^{[2
]}

Hoefelmeyer, James D. ^{[1
]}

机构：

[1] Univ S Dakota, Dept Chem, Vermillion, SD 57069 USA

[2] Oak Ridge Natl Lab, Microscopy Grp, MST Div, Oak Ridge, TN 37831 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 32期

关键词：

D O I：

10.1021/jp801546c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ruthenium nanocrystals were prepared upon decomposition of Ru-3(CO)(12) at high temperature in the presence of alkylamine stabilizers. The reaction produced a dark brown colloid that was processed with toluene/ethanol as solvent/nonsolvent pair. The materials were characterized using high resolution electron microscopy and powder X-ray diffraction. The Ru nanocrystals were single crystals with a hcp structure, and displayed regular facets. At lower temperatures nucleation was followed by attachment to yield mesoscale polycrystalline branched ruthenium structures.

引用

页码：12122 / 12126

页数：5

共 31 条

[1] Understanding the structural deactivation of ruthenium catalysts on an atomic scale under both oxidizing and reducing conditions [J].

Assmann, J ;

Crihan, D ;

Knapp, M ;

Lundgren, E ;

Löffler, E ;

Muhler, M ;

Narkhede, V ;

Over, H ;

Schmid, M ;

Seitsonen, AP ;

Varga, P .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2005, 44 (06) :917-920

[2] THE QUANTUM-MECHANICS OF LARGER SEMICONDUCTOR CLUSTERS (QUANTUM DOTS) [J].

BAWENDI, MG ;

STEIGERWALD, ML ;

BRUS, LE .

ANNUAL REVIEW OF PHYSICAL CHEMISTRY, 1990, 41 :477-496

[3] Acetate- and thiol-capped monodisperse ruthenium nanoparticles:: XPS, XAS, and HRTEM studies [J].

Chakroune, N ;

Viau, G ;

Ammar, S ;

Poul, L ;

Veautier, D ;

Chehimi, MM ;

Mangeney, C ;

Villain, F ;

Fiévet, F .

LANGMUIR, 2005, 21 (15) :6788-6796

[4] Size-controlled synthesis of Ru nanoparticles by ethylene glycol reduction [J].

Chen, Yong ;

Liew, Kong Yong ;

Li, Jinlin .

MATERIALS LETTERS, 2008, 62 (6-7) :1018-1021

[5] TRANSMISSION ELECTRON-MICROSCOPY OF RU SUPPORTED ON MODEL OXIDE SURFACES [J].

DATYE, AK ;

LOGAN, AD ;

LONG, NJ .

JOURNAL OF CATALYSIS, 1988, 109 (01) :76-88

[6] Small is different: Shape-, size-, and composition-dependent properties of some colloidal semiconductor nanocrystals [J].

El-Sayed, MA .

ACCOUNTS OF CHEMICAL RESEARCH, 2004, 37 (05) :326-333

[7] Controlling the agglomeration of anisotropic Ru nanoparticles by the microwave-polyol process [J].

Harpeness, R ;

Peng, Z ;

Liu, XS ;

Pol, VG ;

Koltypin, Y ;

Gedanken, A .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2005, 287 (02) :678-684

[8] The development of metallic behaviour in clusters [J].

Johnston, RL .

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1998, 356 (1735) :211-227

[9] Symmetry-controlled colloidal nanocrystals: Nonhydrolytic chemical synthesis and shape determining parameters [J].

Jun, YW ;

Lee, JH ;

Choi, JS ;

Cheon, J .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (31) :14795-14806

[10]

KUMAR C, 2005, BIOFUNCTIONALIZATION

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