Templated Growth of Hexagonal Nickel Carbide Nanocrystals on Vertically Aligned Carbon Nanotubes

Jun Y. Hwang; Antariksh R. P. Singh; Mrunalkumar Chaudhari; Jaimie Tiley; Yuntian Zhu; Jincheng Du; Rajarshi Banerjee

doi:10.1021/jp102571g

Templated Growth of Hexagonal Nickel Carbide Nanocrystals on Vertically Aligned Carbon Nanotubes

Jun Y. Hwang, Antariksh R. P. Singh, Mrunalkumar Chaudhari, Jaimie Tiley, Yuntian Zhu, Jincheng Du, Rajarshi Banerjee^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

25 Citations (Scopus)

Abstract

Nanocrystals of hexagonal nickel carbide have been synthesized via physical vapor deposition of elemental nickel onto the surface of vertically aligned carbon nanotubes. Combining high-resolution transmission electron microscopy (HRTEM) with three-dimensional atom probe tomography (3DAP) confirmed that these nanocrystals have a hexagonal structure, are enriched in carbon, and have a composition of ∼Ni-25 at. % C (Ni₃C). This metastable hexagonal nickel carbide phase appears to be stabilized due to the growth of the nanocrystals on the surface of the nanotubes that act as a template and also as a source of carbon. The stability of this nickel carbide phase has also been investigated by density functional theory (DFT) calculations and compared to the experimental results. © 2010 American Chemical Society.

Original language	English
Pages (from-to)	10424-10429
Journal	The Journal of Physical Chemistry C
Volume	114
Issue number	23
Online published	18 May 2010
DOIs	https://doi.org/10.1021/jp102571g
Publication status	Published - 17 Jun 2010
Externally published	Yes

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@article{002666722d3f495ab0637c14d0e531fd,

title = "Templated Growth of Hexagonal Nickel Carbide Nanocrystals on Vertically Aligned Carbon Nanotubes",

abstract = "Nanocrystals of hexagonal nickel carbide have been synthesized via physical vapor deposition of elemental nickel onto the surface of vertically aligned carbon nanotubes. Combining high-resolution transmission electron microscopy (HRTEM) with three-dimensional atom probe tomography (3DAP) confirmed that these nanocrystals have a hexagonal structure, are enriched in carbon, and have a composition of ∼Ni-25 at. % C (Ni3C). This metastable hexagonal nickel carbide phase appears to be stabilized due to the growth of the nanocrystals on the surface of the nanotubes that act as a template and also as a source of carbon. The stability of this nickel carbide phase has also been investigated by density functional theory (DFT) calculations and compared to the experimental results. {\textcopyright} 2010 American Chemical Society.",

author = "Hwang, {Jun Y.} and Singh, {Antariksh R. P.} and Mrunalkumar Chaudhari and Jaimie Tiley and Yuntian Zhu and Jincheng Du and Rajarshi Banerjee",

year = "2010",

month = jun,

day = "17",

doi = "10.1021/jp102571g",

language = "English",

volume = "114",

pages = "10424--10429",

journal = "The Journal of Physical Chemistry C",

issn = "1932-7447",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Templated Growth of Hexagonal Nickel Carbide Nanocrystals on Vertically Aligned Carbon Nanotubes

AU - Hwang, Jun Y.

AU - Singh, Antariksh R. P.

AU - Chaudhari, Mrunalkumar

AU - Tiley, Jaimie

AU - Zhu, Yuntian

AU - Du, Jincheng

AU - Banerjee, Rajarshi

PY - 2010/6/17

Y1 - 2010/6/17

N2 - Nanocrystals of hexagonal nickel carbide have been synthesized via physical vapor deposition of elemental nickel onto the surface of vertically aligned carbon nanotubes. Combining high-resolution transmission electron microscopy (HRTEM) with three-dimensional atom probe tomography (3DAP) confirmed that these nanocrystals have a hexagonal structure, are enriched in carbon, and have a composition of ∼Ni-25 at. % C (Ni3C). This metastable hexagonal nickel carbide phase appears to be stabilized due to the growth of the nanocrystals on the surface of the nanotubes that act as a template and also as a source of carbon. The stability of this nickel carbide phase has also been investigated by density functional theory (DFT) calculations and compared to the experimental results. © 2010 American Chemical Society.

AB - Nanocrystals of hexagonal nickel carbide have been synthesized via physical vapor deposition of elemental nickel onto the surface of vertically aligned carbon nanotubes. Combining high-resolution transmission electron microscopy (HRTEM) with three-dimensional atom probe tomography (3DAP) confirmed that these nanocrystals have a hexagonal structure, are enriched in carbon, and have a composition of ∼Ni-25 at. % C (Ni3C). This metastable hexagonal nickel carbide phase appears to be stabilized due to the growth of the nanocrystals on the surface of the nanotubes that act as a template and also as a source of carbon. The stability of this nickel carbide phase has also been investigated by density functional theory (DFT) calculations and compared to the experimental results. © 2010 American Chemical Society.

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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-77953498533&origin=recordpage

U2 - 10.1021/jp102571g

DO - 10.1021/jp102571g

M3 - RGC 21 - Publication in refereed journal

SN - 1932-7447

VL - 114

SP - 10424

EP - 10429

JO - The Journal of Physical Chemistry C

JF - The Journal of Physical Chemistry C

IS - 23

ER -

Templated Growth of Hexagonal Nickel Carbide Nanocrystals on Vertically Aligned Carbon Nanotubes

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