Nobler than the Noblest: Noncubic Gold Microcrystallites
Abstract
Conventional gold comprising the cubic lattice is universally known for its stability. However, well known to chemists and metallurgists, this nobility is challenged by reagents such as aqua regia, which dissolve gold to form a salt solution. Among metals, mercury blends with gold to form amalgam, otherwise transition metals such as copper tend to interact with gold surfaces in electrochemical media. Herein, we report a combined experimental and theoretical investigation of the stability of Au microcrystallites bearing unconventional crystal lattices that exhibit enhanced stability towards Hg and aqua regia and practically no interaction with Cu during electroless plating. The unconventional gold is undoubtedly nobler.
- Authors:
-
[1];
[2];
[1];
[2];
[3]
- Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Bangalore (India). Thematic Unit of Excellence on Nanochemistry, and Chemistry and Physics of Materials Unit
- Vanderbilt Univ., Nashville, TN (United States). Dept. of Physics and Astronomy; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
- Centre for Nano and Soft Matter Sciences, Jalahalli, Bangalore (India)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of California, Oakland, CA (United States); Vanderbilt Univ., Nashville, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1543474
- Alternate Identifier(s):
- OSTI ID: 1460459; OSTI ID: 1597892
- Grant/Contract Number:
- AC02-05CH11231; FG02-09ER46554
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Angewandte Chemie (International Edition)
- Additional Journal Information:
- Journal Name: Angewandte Chemie (International Edition); Journal Volume: 57; Journal Issue: 29; Journal ID: ISSN 1433-7851
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; chemistry; amalgam; aqua regia; copper; gold
Citation Formats
Mettela, Gangaiah, Kouser, Summayya, Sow, Chaitali, Pantelides, Sokrates T., and Kulkarni, Giridhar U. Nobler than the Noblest: Noncubic Gold Microcrystallites. United States: N. p., 2018.
Web. doi:10.1002/anie.201804541.
Mettela, Gangaiah, Kouser, Summayya, Sow, Chaitali, Pantelides, Sokrates T., & Kulkarni, Giridhar U. Nobler than the Noblest: Noncubic Gold Microcrystallites. United States. https://doi.org/10.1002/anie.201804541
Mettela, Gangaiah, Kouser, Summayya, Sow, Chaitali, Pantelides, Sokrates T., and Kulkarni, Giridhar U. Wed .
"Nobler than the Noblest: Noncubic Gold Microcrystallites". United States. https://doi.org/10.1002/anie.201804541. https://www.osti.gov/servlets/purl/1543474.
@article{osti_1543474,
title = {Nobler than the Noblest: Noncubic Gold Microcrystallites},
author = {Mettela, Gangaiah and Kouser, Summayya and Sow, Chaitali and Pantelides, Sokrates T. and Kulkarni, Giridhar U.},
abstractNote = {Conventional gold comprising the cubic lattice is universally known for its stability. However, well known to chemists and metallurgists, this nobility is challenged by reagents such as aqua regia, which dissolve gold to form a salt solution. Among metals, mercury blends with gold to form amalgam, otherwise transition metals such as copper tend to interact with gold surfaces in electrochemical media. Herein, we report a combined experimental and theoretical investigation of the stability of Au microcrystallites bearing unconventional crystal lattices that exhibit enhanced stability towards Hg and aqua regia and practically no interaction with Cu during electroless plating. The unconventional gold is undoubtedly nobler.},
doi = {10.1002/anie.201804541},
journal = {Angewandte Chemie (International Edition)},
number = 29,
volume = 57,
place = {United States},
year = {Wed May 30 00:00:00 EDT 2018},
month = {Wed May 30 00:00:00 EDT 2018}
}
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Figures / Tables:
Figure 1: (a, e) SEM images of uncoated typical fcc and bc(o,t) Au bipyramids. SEM images and elemental maps following Cu plating on fcc (b-d) and bc(o,t) Au (f-h) bipyramids, respectively. (i) A high magnification image of the tip region (dashed square) indicated in f. (j and k) EDS intensitymore »
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Figures / Tables found in this record:
Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.