Redox chemistry of Cu colloids probed by adsorbed CO:: An in situ attenuated total reflection Fourier transform infrared study

被引：30

作者：

Schröter, MK

Khodeir, L

Hambrock, J

Löffler, E

Muhler, M

Fischer, RA ^{[1
]}

机构：

[1] Ruhr Univ Bochum, Chair Inorgan Chem 2, D-44780 Bochum, Germany

[2] Ruhr Univ Bochum, Chair Ind Chem, D-44780 Bochum, Germany

来源：

LANGMUIR | 2004年 / 20卷 / 22期

关键词：

D O I：

10.1021/la0482554

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The IR spectroscopic investigation of both the adsorption of carbon monoxide and the interaction of oxygen and CO on the surface of copper colloids is described for the first time. The copper colloids were produced by pyrolysis of [Cu(OCH(Me)CH2NMe2)(2)] in hot n-hexadecylamine. Upon contact to synthetic air Cu/CUxO core-shell particles are formed. The treatment of these particles with CO results in the reestablishment of pure Cu(0) particles. These results demonstrate that small molecules penetrate the ligand shell of the nanoparticles and reversibly adsorb at the surface without affecting the particle morphology and size distribution.

引用

收藏

页码：9453 / 9455

页数：3

相关论文

共 20 条

[1] FTIR study of carbon monoxide oxidation and scrambling at room temperature over copper supported on ZnO and TiO2 .1. [J].

Boccuzzi, F ;

Chiorino, A .

JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (09) :3617-3624

[2] SURFACE-CHEMISTRY ON COLLOIDAL METALS - REVERSIBLE ADSORBATE-INDUCED SURFACE-COMPOSITION CHANGES IN COLLOIDAL PALLADIUM-COPPER ALLOYS [J].

BRADLEY, JS ;

HILL, EW ;

CHAUDRET, B ;

DUTEIL, A .

LANGMUIR, 1995, 11 (03) :693-695

[3] SYNTHESIS OF MONODISPERSED BIMETALLIC PALLADIUM COPPER NANOSCALE COLLOIDS [J].

BRADLEY, JS ;

HILL, EW ;

KLEIN, C ;

CHAUDRET, B ;

DUTEIL, A .

CHEMISTRY OF MATERIALS, 1993, 5 (03) :254-256

[4] In situ infrared spectroscopy of catalytic solid-liquid interfaces using phase-sensitive detection:: Enantioselective hydrogenation of a pyrone over Pd/TiO2 [J].

Bürgi, T ;

Baiker, A .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (41) :10649-10658

[5] ULTRAVIOLET VISIBLE ABSORPTION-SPECTRA OF THE COLLOIDAL METALLIC ELEMENTS [J].

CREIGHTON, JA ;

EADON, DG .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1991, 87 (24) :3881-3891

[6] Determination of the dispersion and surface oxidation states of supported Cu catalysts [J].

Dandekar, A ;

Vannice, MA .

JOURNAL OF CATALYSIS, 1998, 178 (02) :621-639

[7]

Davydov A. A., 1990, INFRARED SPECTROSCOP

[8] PREPARATION AND X-RAY CRYSTAL-STRUCTURES OF VOLATILE COPPER(II) ALKOXIDES [J].

GOEL, SC ;

KRAMER, KS ;

CHIANG, MY ;

BUHRO, WE .

POLYHEDRON, 1990, 9 (04) :611-613

[9] FTIR spectroscopic study of CO adsorption on CU/SiO2:: formation of new types of copper carbonyls [J].

Hadjiivanov, K ;

Venkov, T ;

Knözinger, H .

CATALYSIS LETTERS, 2001, 75 (1-2) :55-59

[10] A non-aqueous organometallic route to highly monodispersed copper nanoparticles using [Cu(OCH(Me)CH2NMe2)2] [J].

Hambrock, J ;

Becker, R ;

Birkner, A ;

Weiss, J ;

Fischer, RA .

CHEMICAL COMMUNICATIONS, 2002, (01) :68-69