Unusual Rh nanocrystal morphology control by hetero-epitaxially growing Rh on Au@Pt nanowires with numerous vertical twinning boundaries

Hyohyun An, Nguyen Tien Khi, Jisun Yoon, Hyunkyung Lee, Hionsuck Baik, Jeong Hun Sohn, Kwangyeol Lee

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Simultaneously growing multiple nanocrystallites in a crowded space can cause a shortage of precursors, and this can lead to a vertical growth of nanocrystallites on a given substrate. The presence of surfactant-surfactant interactions among adjacent nanocrystals can also place a unique structural constraint on the growing nanocrystallites, resulting in novel nanocrystal facet control. Herein, we report the growth of Rh on Au@Pt nanowires with multiple twinning boundaries, which are found along the entire nanowire length. The Au@Pt nanowires exhibit numerous bead-like structures, resulting from the preferred Pt deposition on the twinning boundaries, which can serve as nucleation sites for Rh. The heteroepitaxial growth of Rh on the Au@Pt nanowires results in unusual crystal growth behaviours. First, novel morphologies of Rh nanorods, nanoplates, and tangled manes are obtained temperature-dependently, which are not obtained in the absence of the Au@Pt nanowire substrate. Secondly, the thickness of vertically grown nanorods and nanoplates is tightly controlled. We also report the structure-catalytic activity relationship on the catalytic hydrogenation of phthalimides by the new Rh nanostructures. This journal is

Original languageEnglish
Pages (from-to)8309-8314
Number of pages6
JournalNanoscale
Volume7
Issue number18
DOIs
Publication statusPublished - 2015 May 14

Fingerprint

Twinning
Nanocrystals
Nanowires
Nanocrystallites
Nanorods
Surface-Active Agents
Phthalimides
Surface active agents
Beam plasma interactions
Substrates
Crystallization
Epitaxial growth
Crystal growth
Hydrogenation
Nanostructures
Catalyst activity
Nucleation
Temperature

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Unusual Rh nanocrystal morphology control by hetero-epitaxially growing Rh on Au@Pt nanowires with numerous vertical twinning boundaries. / An, Hyohyun; Khi, Nguyen Tien; Yoon, Jisun; Lee, Hyunkyung; Baik, Hionsuck; Sohn, Jeong Hun; Lee, Kwangyeol.

In: Nanoscale, Vol. 7, No. 18, 14.05.2015, p. 8309-8314.

Research output: Contribution to journalArticle

An, Hyohyun ; Khi, Nguyen Tien ; Yoon, Jisun ; Lee, Hyunkyung ; Baik, Hionsuck ; Sohn, Jeong Hun ; Lee, Kwangyeol. / Unusual Rh nanocrystal morphology control by hetero-epitaxially growing Rh on Au@Pt nanowires with numerous vertical twinning boundaries. In: Nanoscale. 2015 ; Vol. 7, No. 18. pp. 8309-8314.
@article{d2278ceaa2dd498ba7452d94580b1654,
title = "Unusual Rh nanocrystal morphology control by hetero-epitaxially growing Rh on Au@Pt nanowires with numerous vertical twinning boundaries",
abstract = "Simultaneously growing multiple nanocrystallites in a crowded space can cause a shortage of precursors, and this can lead to a vertical growth of nanocrystallites on a given substrate. The presence of surfactant-surfactant interactions among adjacent nanocrystals can also place a unique structural constraint on the growing nanocrystallites, resulting in novel nanocrystal facet control. Herein, we report the growth of Rh on Au@Pt nanowires with multiple twinning boundaries, which are found along the entire nanowire length. The Au@Pt nanowires exhibit numerous bead-like structures, resulting from the preferred Pt deposition on the twinning boundaries, which can serve as nucleation sites for Rh. The heteroepitaxial growth of Rh on the Au@Pt nanowires results in unusual crystal growth behaviours. First, novel morphologies of Rh nanorods, nanoplates, and tangled manes are obtained temperature-dependently, which are not obtained in the absence of the Au@Pt nanowire substrate. Secondly, the thickness of vertically grown nanorods and nanoplates is tightly controlled. We also report the structure-catalytic activity relationship on the catalytic hydrogenation of phthalimides by the new Rh nanostructures. This journal is",
author = "Hyohyun An and Khi, {Nguyen Tien} and Jisun Yoon and Hyunkyung Lee and Hionsuck Baik and Sohn, {Jeong Hun} and Kwangyeol Lee",
year = "2015",
month = "5",
day = "14",
doi = "10.1039/c5nr00999e",
language = "English",
volume = "7",
pages = "8309--8314",
journal = "Nanoscale",
issn = "2040-3364",
publisher = "Royal Society of Chemistry",
number = "18",

}

TY - JOUR

T1 - Unusual Rh nanocrystal morphology control by hetero-epitaxially growing Rh on Au@Pt nanowires with numerous vertical twinning boundaries

AU - An, Hyohyun

AU - Khi, Nguyen Tien

AU - Yoon, Jisun

AU - Lee, Hyunkyung

AU - Baik, Hionsuck

AU - Sohn, Jeong Hun

AU - Lee, Kwangyeol

PY - 2015/5/14

Y1 - 2015/5/14

N2 - Simultaneously growing multiple nanocrystallites in a crowded space can cause a shortage of precursors, and this can lead to a vertical growth of nanocrystallites on a given substrate. The presence of surfactant-surfactant interactions among adjacent nanocrystals can also place a unique structural constraint on the growing nanocrystallites, resulting in novel nanocrystal facet control. Herein, we report the growth of Rh on Au@Pt nanowires with multiple twinning boundaries, which are found along the entire nanowire length. The Au@Pt nanowires exhibit numerous bead-like structures, resulting from the preferred Pt deposition on the twinning boundaries, which can serve as nucleation sites for Rh. The heteroepitaxial growth of Rh on the Au@Pt nanowires results in unusual crystal growth behaviours. First, novel morphologies of Rh nanorods, nanoplates, and tangled manes are obtained temperature-dependently, which are not obtained in the absence of the Au@Pt nanowire substrate. Secondly, the thickness of vertically grown nanorods and nanoplates is tightly controlled. We also report the structure-catalytic activity relationship on the catalytic hydrogenation of phthalimides by the new Rh nanostructures. This journal is

AB - Simultaneously growing multiple nanocrystallites in a crowded space can cause a shortage of precursors, and this can lead to a vertical growth of nanocrystallites on a given substrate. The presence of surfactant-surfactant interactions among adjacent nanocrystals can also place a unique structural constraint on the growing nanocrystallites, resulting in novel nanocrystal facet control. Herein, we report the growth of Rh on Au@Pt nanowires with multiple twinning boundaries, which are found along the entire nanowire length. The Au@Pt nanowires exhibit numerous bead-like structures, resulting from the preferred Pt deposition on the twinning boundaries, which can serve as nucleation sites for Rh. The heteroepitaxial growth of Rh on the Au@Pt nanowires results in unusual crystal growth behaviours. First, novel morphologies of Rh nanorods, nanoplates, and tangled manes are obtained temperature-dependently, which are not obtained in the absence of the Au@Pt nanowire substrate. Secondly, the thickness of vertically grown nanorods and nanoplates is tightly controlled. We also report the structure-catalytic activity relationship on the catalytic hydrogenation of phthalimides by the new Rh nanostructures. This journal is

UR - http://www.scopus.com/inward/record.url?scp=84928920420&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84928920420&partnerID=8YFLogxK

U2 - 10.1039/c5nr00999e

DO - 10.1039/c5nr00999e

M3 - Article

AN - SCOPUS:84928920420

VL - 7

SP - 8309

EP - 8314

JO - Nanoscale

JF - Nanoscale

SN - 2040-3364

IS - 18

ER -