Anisotropic etching of microscale β-FeSi 2 particles: Formation, mechanism, and quantum confinement of β-FeSi 2 nanowhiskers

J. Y. He; X. Wang; X. L. Wu; Paul K. Chu

doi:10.1039/c2ra00893a

Anisotropic etching of microscale β-FeSi ₂ particles: Formation, mechanism, and quantum confinement of β-FeSi ₂ nanowhiskers

J. Y. He
, X. Wang
, X. L. Wu
, Paul K. Chu

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

4 Citations (Scopus)

Abstract

Needle-shaped β-FeSi ₂ nanowhiskers with diameters of 1-5 nm and lengths of 20-100 nm are produced by chemical etching of β-FeSi ₂ powders with microscale particles. The nanowhiskers mainly exhibit a growth direction due to the anisotropic etching following the lowest etching rate of the Fe atomic facets. The absorbance spectra show that the energy gap of the β-FeSi ₂ nanowhiskers increases from 0.81 (bulk) to 0.94 eV, demonstrating distinct quantum size effect. © 2012 The Royal Society of Chemistry.

Original language	English
Pages (from-to)	3254-3256
Journal	RSC Advances
Volume	2
Issue number	8
DOIs	https://doi.org/10.1039/c2ra00893a
Publication status	Published - 21 Apr 2012

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@article{94dc80c5973247cd870fd944c8faa1f3,

title = "Anisotropic etching of microscale β-FeSi 2 particles: Formation, mechanism, and quantum confinement of β-FeSi 2 nanowhiskers",

abstract = "Needle-shaped β-FeSi 2 nanowhiskers with diameters of 1-5 nm and lengths of 20-100 nm are produced by chemical etching of β-FeSi 2 powders with microscale particles. The nanowhiskers mainly exhibit a growth direction due to the anisotropic etching following the lowest etching rate of the Fe atomic facets. The absorbance spectra show that the energy gap of the β-FeSi 2 nanowhiskers increases from 0.81 (bulk) to 0.94 eV, demonstrating distinct quantum size effect. {\textcopyright} 2012 The Royal Society of Chemistry.",

author = "He, \{J. Y.\} and X. Wang and Wu, \{X. L.\} and Chu, \{Paul K.\}",

year = "2012",

month = apr,

day = "21",

doi = "10.1039/c2ra00893a",

language = "English",

volume = "2",

pages = "3254--3256",

journal = "RSC Advances",

issn = "2046-2069",

publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - Anisotropic etching of microscale β-FeSi 2 particles

T2 - Formation, mechanism, and quantum confinement of β-FeSi 2 nanowhiskers

AU - He, J. Y.

AU - Wang, X.

AU - Wu, X. L.

AU - Chu, Paul K.

PY - 2012/4/21

Y1 - 2012/4/21

N2 - Needle-shaped β-FeSi 2 nanowhiskers with diameters of 1-5 nm and lengths of 20-100 nm are produced by chemical etching of β-FeSi 2 powders with microscale particles. The nanowhiskers mainly exhibit a growth direction due to the anisotropic etching following the lowest etching rate of the Fe atomic facets. The absorbance spectra show that the energy gap of the β-FeSi 2 nanowhiskers increases from 0.81 (bulk) to 0.94 eV, demonstrating distinct quantum size effect. © 2012 The Royal Society of Chemistry.

AB - Needle-shaped β-FeSi 2 nanowhiskers with diameters of 1-5 nm and lengths of 20-100 nm are produced by chemical etching of β-FeSi 2 powders with microscale particles. The nanowhiskers mainly exhibit a growth direction due to the anisotropic etching following the lowest etching rate of the Fe atomic facets. The absorbance spectra show that the energy gap of the β-FeSi 2 nanowhiskers increases from 0.81 (bulk) to 0.94 eV, demonstrating distinct quantum size effect. © 2012 The Royal Society of Chemistry.

UR - https://www.scopus.com/pages/publications/84859316506

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84859316506&origin=recordpage

U2 - 10.1039/c2ra00893a

DO - 10.1039/c2ra00893a

M3 - RGC 21 - Publication in refereed journal

SN - 2046-2069

VL - 2

SP - 3254

EP - 3256

JO - RSC Advances

JF - RSC Advances

IS - 8

ER -