Nanoscale coatings of AuAlx and PtAlx and their mesoporous elemental derivatives
College
College of Science
Department/Unit
Physics
Document Type
Article
Source Title
Current Applied Physics
Volume
6
First Page
440
Last Page
443
Publication Date
6-2006
Abstract
A method to produce nanoscale films of AuAlx and PtAlx, and their mesoporous elemental derivatives is described, and the morphology and optical properties of these coatings explored. The color of the AuAlx film is bright purple, in agreement with ab initio calculations and experimental observations for the compound AuAl2, but becomes black after de-alloying with NaOH. The film of PtAlx is silver-grey and changes to grey after being converted to mesoporous Pt by de-alloying. Both mesoporous coatings exhibit a very rough surface, with pores of between 2 and 20 nm in diameter, and display a significantly more absorptive optical characteristic compared to their ordinary elemental counterparts.
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Recommended Citation
Cortie, M. B., Maaroof, A. I., Smith, G. B., & Ngoepe, P. (2006). Nanoscale coatings of AuAlx and PtAlx and their mesoporous elemental derivatives. Current Applied Physics, 6, 440-443. Retrieved from https://animorepository.dlsu.edu.ph/faculty_research/8175
Disciplines
Physics
Keywords
Gold—Optical properties; Platinum—Optical properties; Mesoporous materials—Optical properties
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