Surface-specific overgrowth of platinum on shaped gold nanocrystals

Literature Information

Publication Date 2009-08-24
DOI 10.1039/B912962F
Impact Factor 3.676
Authors

Minkyu Min, Cheonghee Kim, Young In Yang, Jongheop Yi, Hyunjoo Lee


View Original

Abstract

Controlling the shape and composition of metal nanocrystals can be beneficial for tuning the optical or catalytic properties in a variety of applications. In this study, surface-specific overgrowth of platinum was found on shaped gold nanocrystals of cubes, octahedra and spheres. Platinum overgrowth was observed on the planar faces of gold cubes, while the overgrowth occurred at the vertices of gold octahedra, indicating that platinum was selectively reduced on the Au (100) surface for each gold nanocrystal shape. The platinum nuclei covered the entire surface for gold spheres, which don’t have well-defined surfaces. As the Pt/Au ratio increased, a full platinum shell was formed. Solution-based UV-Vis absorption spectra of the composite nanocrystals showed that the absorption peak was red-shifted with increasing platinum coverage. The optical response of a single composite nanocrystal was measured by dark field microscope, which also demonstrated a red shift in the scattering spectrum with increasing platinum coverage. The extent of a red shift depended on the shape and composition of the composite nanocrystals.

Related Literature

BAR-based optimum adaptive sampling regime for variance minimization in alchemical transformation

Zhao X. Sun, Xiao H. Wang

2017-05-15 Paper

DOI: 10.1039/C7CP01561E

Effects of sodium cationization versus protonation on the conformations and N-glycosidic bond stabilities of sodium cationized Urd and dUrd: solution conformation of [Urd+Na]+ is preserved upon ESI

Y. Zhu, H. A. Roy, N. A. Cunningham, S. F. Strobehn, J. Gao, M. U. Munshi, G. Berden, J. Oomens, M. T. Rodgers

2017-06-19 Paper

DOI: 10.1039/C7CP02377D

Multi-spectroscopic and theoretical analyses on the diphenyl ether–tert-butyl alcohol complex in the electronic ground and electronically excited state

Dominic Bernhard, Fabian Dietrich, Mariyam Fatima, Cristobal Perez, Anja Poblotzki, Georg Jansen, Martin A. Suhm, Melanie Schnell, Markus Gerhards

2017-06-21 Paper

DOI: 10.1039/C7CP02967E

Broadband reflection in polymer stabilized cholesteric liquid crystal films with stepwise photo-polymerization

Man-yu Duan, Hui Cao, Yong Wu, Er-li Li, Hui-hui Wang, Dong Wang, Zhou Yang, Wan-li He, Huai Yang

2016-12-12 Paper

DOI: 10.1039/C6CP07066C

Schottky barrier and band edge engineering via the interfacial structure and strain for the Pt/TiO2 heterostructure

Xiangchao Ma, Xin Wu, Yucheng Wang, Ying Dai

2017-06-23 Paper

DOI: 10.1039/C7CP03453A

Intricate kinetics: in situ FTIR-spectroscopy discloses a phase change during ionic liquid synthesis

A. Ohligschläger, M. A. Liauw

2017-06-16 Paper

DOI: 10.1039/C7CP03257A

You might also like

Compound Q&A

What is Ethyl 3-cyclohexylpropanoate (CAS: 10094-36-7)?

Ethyl 3-cyclohexylpropanoate is a clear, colorless to light yellow liquid with a...

10094-36-7Ethyl 3-cyclohexylpr...
Compound Q&A

How should waste containing 2-(Hydroxymethyl)-5-(methoxycarbonyl)-6-methyl-4-(2-nitrophenyl)nicotinic acid (CAS: 34783-31-8) be handled?

Waste containing 2-(Hydroxymethyl)-5-(methoxycarbonyl)-6-methyl-4-(2-nitrophenyl...

34783-31-82-(Hydroxymethyl)-5-...
Compound Q&A

How should waste containing 2,4,6-Tris(pentafluoroethyl)-1,3,5-triazine (CAS: 858-46-8) be handled?

Waste containing 2,4,6-Tris(pentafluoroethyl)-1,3,5-triazine (CAS: 858-46-8) sho...

858-46-82,4,6-Tris(pentafluo...
Compound Q&A

What precautions should be taken when handling Chloroac-nle-oh (CAS: 56787-36-1)?

When handling Chloroac-nle-oh (CAS: 56787-36-1), it is essential to wear appropr...

56787-36-1Chloroac-nle-oh
Compound Q&A

What industries use Ethyl 6-phenylimidazo[2,1-b][1,3]thiazole-3-carboxylate (CAS: 752244-05-6)?

Ethyl 6-phenylimidazo[2,1-b][1,3]thiazole-3-carboxylate is primarily used in the...

752244-05-6Ethyl 6-phenylimidaz...
Compound Q&A

Are there alternatives to alpha-(2-Bromophenyl)benzylamine (CAS: 55095-15-3) in synthesis?

Alternatives to alpha-(2-Bromophenyl)benzylamine (CAS: 55095-15-3) in synthesis ...

55095-15-3alpha-(2-Bromophenyl...
Compound Q&A

How should waste containing 2-Chloro-5-methoxypyridine (CAS: 139585-48-1) be handled?

Waste containing 2-Chloro-5-methoxypyridine (CAS: 139585-48-1) should be managed...

139585-48-12-Chloro-5-methoxypy...
Compound Q&A

What industries use 1-(4-Methoxyphenyl)-2,5-dimethyl-1H-pyrrole (CAS: 5044-27-9)?

1-(4-Methoxyphenyl)-2,5-dimethyl-1H-pyrrole (CAS: 5044-27-9) is used in various ...

5044-27-91-(4-Methoxyphenyl)-...
Compound Q&A

Are there alternatives to 3-Bromo-5-(N-Boc)aminomethylisoxazole (CAS: 903131-45-3) in synthesis?

There are alternative reagents and compounds that can be used in the synthesis o...

903131-45-33-Bromo-5-(N-Boc)ami...
Compound Q&A

What is Tungsten(IV) oxide (CAS: 12036-22-5)?

Tungsten(IV) oxide, also known as tungsten dioxide, is a chemical compound with ...

12036-22-5Tungsten(IV) oxide

Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

Recommended Compounds

Recommended Suppliers

Disclaimer
This page provides academic journal information for reference and research purposes only. We are not affiliated with any journal publishers and do not handle publication submissions. For publication-related inquiries, please contact the respective journal publishers directly.
If you notice any inaccuracies in the information displayed, please contact us at support@chemtradehub.com. We will promptly review and address your concerns.