Photoinduced Reactions of a Carbene Precursor with Chemisorbed CO on a Metal Surface:  Diphenyldiazomethane on CO-Covered Ru(0001)

Markus Gunia; Peter Jakob; Wolfram Sander; Christof Wöll

doi:10.1021/jp0401877

Photoinduced Reactions of a Carbene Precursor with Chemisorbed CO on a Metal Surface: Diphenyldiazomethane on CO-Covered Ru(0001)

The Journal of Physical Chemistry B ◽

10.1021/jp0401877 ◽

2004 ◽

Vol 108 (37) ◽

pp. 14025-14031 ◽

Cited By ~ 2

Author(s):

Markus Gunia ◽

Peter Jakob ◽

Wolfram Sander ◽

Christof Wöll

Keyword(s):

Metal Surface ◽

Photoinduced Reactions

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Electrochemical nucleation and growth of copper on iron and aluminum: A TEM study of industrial copper cementation

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100109410 ◽

1978 ◽

Vol 36 (1) ◽

pp. 454-455

Author(s):

L.E. Murr ◽

V. Annamalai

Keyword(s):

Metal Surface ◽

Copper Deposit ◽

Nucleation And Growth ◽

16Th Century ◽

Electrochemical Reactions ◽

Mine Shaft ◽

De Re ◽

Copper Precipitation ◽

Electrochemical Nucleation ◽

Interesting System

Georgius Agricola in 1556 in his classical book, “De Re Metallica”, mentioned a strange water drawn from a mine shaft near Schmölnitz in Hungary that eroded iron and turned it into copper. This precipitation (or cementation) of copper on iron was employed as a commercial technique for producing copper at the Rio Tinto Mines in Spain in the 16th Century, and it continues today to account for as much as 15 percent of the copper produced by several U.S. copper companies.In addition to the Cu/Fe system, many other similar heterogeneous, electrochemical reactions can occur where ions from solution are reduced to metal on a more electropositive metal surface. In the case of copper precipitation from solution, aluminum is also an interesting system because of economic, environmental (ecological) and energy considerations. In studies of copper cementation on aluminum as an alternative to the historical Cu/Fe system, it was noticed that the two systems (Cu/Fe and Cu/Al) were kinetically very different, and that this difference was due in large part to differences in the structure of the residual, cement-copper deposit.

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Rapid Freezing of Freeze-Etch Specimens

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s1431927600003275 ◽

1980 ◽

Vol 38 ◽

pp. 752-755

Author(s):

A. Elgsaeter ◽

T. Espevik ◽

G. Kopstad

Keyword(s):

Low Temperature ◽

Metal Surface ◽

Relative Velocity ◽

Thermal Contact ◽

High Rate ◽

Rapid Freezing ◽

Temperature Decrease ◽

Freeze Etching

The importance of a high rate of temperature decrease (“rapid freezing”) when freezing specimens for freeze-etching has long been recognized1. The two basic methods for achieving rapid freezing are: 1) dropping the specimen onto a metal surface at low temperature, 2) bringing the specimen instantaneously into thermal contact with a liquid at low temperature and subsequently maintaining a high relative velocity between the liquid and the specimen. Over the last couple of years the first method has received strong renewed interest, particularily as the result of a series of important studies by Heuser and coworkers 2,3. In this paper we will compare these two freezing methods theoretically and experimentally.

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