Epitaxial Electrodeposition of ZnO on Au(111) from Alkaline Solution: Exploiting Amphoterism in Zn(II)

Author

Steven J. Limmer
Elizabeth A. Kulp
Jay A. Switzer, Missouri University of Science and TechnologyFollow

Abstract

The amphoteric nature of ZnO is used to produce the material from strongly alkaline solution. The solution pH is lowered globally to produce ZnO powder, and it is lowered locally at a Au(111) surface to produce epitaxial films. ZnO powder is precipitated from a solution of 10 mM Zn(II) in 0.25 M NaOH by simply adding 1 M HNO3 to the solution. For the film electrodeposition, the local pH at the electrode surface is decreased by electrochemically oxidizing the ascorbate dianion. The chemically precipitated ZnO powder grows with a sea urchin-like nanostructure, whereas the electrodeposited films have a columnar structure. ZnO electrodeposited onto a Au(111) single crystal has a ZnO(0001)[101]//Au(111)[10] orientation relationship

Recommended Citation

S. J. Limmer et al., "Epitaxial Electrodeposition of ZnO on Au(111) from Alkaline Solution: Exploiting Amphoterism in Zn(II)," Langmuir, American Chemical Society (ACS), Jan 2006.

The definitive version is available at https://doi.org/10.1021/la061185b

Department(s)

Chemistry

Sponsor(s)

National Science Foundation (U.S.)
United States. Department of Energy

Keywords and Phrases

Epitaxy; Gold; Zinc

International Standard Serial Number (ISSN)

0743-7463

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2006 American Chemical Society (ACS), All rights reserved.

Publication Date

01 Jan 2006