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Structural- and optical-properties analysis of single crystalline hematite (α-Fe2O3) nanocubes prepared by one-pot hydrothermal approach

High quality single crystal hematite (α-Fe2O3) nanocubes with average dimensions of 40 nm were successfully synthesized by a facile one-pot hydrothermal method. Systematic analyses were performed to investigate the morphological-, structural- and optical-properties of the as-synthesized α-Fe2O3 nano...

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Main Authors: Rashid, N.M.A., Haw, C.Y., Chiu, W.S., Khanis, N.H., Rohaizad, A., Khiew, P.S., Rahman, S.A.
Format: Article
Published: Royal Society of Chemistry 2016
Subjects:
QC Physics
Online Access:http://eprints.um.edu.my/17978/
http://dx.doi.org/10.1039/c6ce00573j
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spelling my.um.eprints.179782017-10-12T02:06:16Z http://eprints.um.edu.my/17978/ Structural- and optical-properties analysis of single crystalline hematite (α-Fe2O3) nanocubes prepared by one-pot hydrothermal approach Rashid, N.M.A. Haw, C.Y. Chiu, W.S. Khanis, N.H. Rohaizad, A. Khiew, P.S. Rahman, S.A. QC Physics High quality single crystal hematite (α-Fe2O3) nanocubes with average dimensions of 40 nm were successfully synthesized by a facile one-pot hydrothermal method. Systematic analyses were performed to investigate the morphological-, structural- and optical-properties of the as-synthesized α-Fe2O3 nanocubes. Continuous formation and hourly monitoring towards proper arrangement of single crystal α-Fe2O3 nanocubes was observed throughout the hydrothermal heating process of 180 °C from 4 h to 12 h. The probable growth mechanism on the formation of cubic nanostructures is also proposed. Electron micrographs show the cubic α-Fe2O3 synthesized at the most optimum 8 h hydrothermal heating duration are indeed produced in high-yield with a well-defined cubical shape. The typical rhombohedral structure of cubic α-Fe2O3 was evident from the XRD pattern. The SAED pattern indicates that the α-Fe2O3 nanocubes are single-crystalline in nature, with lattice-fringes and a d-spacing value of 3.6 Å. The optical characterization reveals that α-Fe2O3 nanocubes show strong visible-light absorption with a band gap energy of ∼2.1 eV while the photoluminescence emission spectra depicts a mono-peak centered at ∼590 nm. Both the SAED pattern and UV-vis spectra show a strong correlation with the standard α-Fe2O3. The as-synthesized α-Fe2O3 single crystal is of high quality that potentially could be used as a visible-light active nanomaterial in renewable energy device applications. Royal Society of Chemistry 2016 Article PeerReviewed Rashid, N.M.A. and Haw, C.Y. and Chiu, W.S. and Khanis, N.H. and Rohaizad, A. and Khiew, P.S. and Rahman, S.A. (2016) Structural- and optical-properties analysis of single crystalline hematite (α-Fe2O3) nanocubes prepared by one-pot hydrothermal approach. CrystEngComm, 18 (25). pp. 4720-4732. ISSN 1466-8033 http://dx.doi.org/10.1039/c6ce00573j doi:10.1039/c6ce00573j
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic QC Physics
spellingShingle QC Physics
Rashid, N.M.A.
Haw, C.Y.
Chiu, W.S.
Khanis, N.H.
Rohaizad, A.
Khiew, P.S.
Rahman, S.A.
Structural- and optical-properties analysis of single crystalline hematite (α-Fe2O3) nanocubes prepared by one-pot hydrothermal approach
description High quality single crystal hematite (α-Fe2O3) nanocubes with average dimensions of 40 nm were successfully synthesized by a facile one-pot hydrothermal method. Systematic analyses were performed to investigate the morphological-, structural- and optical-properties of the as-synthesized α-Fe2O3 nanocubes. Continuous formation and hourly monitoring towards proper arrangement of single crystal α-Fe2O3 nanocubes was observed throughout the hydrothermal heating process of 180 °C from 4 h to 12 h. The probable growth mechanism on the formation of cubic nanostructures is also proposed. Electron micrographs show the cubic α-Fe2O3 synthesized at the most optimum 8 h hydrothermal heating duration are indeed produced in high-yield with a well-defined cubical shape. The typical rhombohedral structure of cubic α-Fe2O3 was evident from the XRD pattern. The SAED pattern indicates that the α-Fe2O3 nanocubes are single-crystalline in nature, with lattice-fringes and a d-spacing value of 3.6 Å. The optical characterization reveals that α-Fe2O3 nanocubes show strong visible-light absorption with a band gap energy of ∼2.1 eV while the photoluminescence emission spectra depicts a mono-peak centered at ∼590 nm. Both the SAED pattern and UV-vis spectra show a strong correlation with the standard α-Fe2O3. The as-synthesized α-Fe2O3 single crystal is of high quality that potentially could be used as a visible-light active nanomaterial in renewable energy device applications.
format Article
author Rashid, N.M.A.
Haw, C.Y.
Chiu, W.S.
Khanis, N.H.
Rohaizad, A.
Khiew, P.S.
Rahman, S.A.
author_facet Rashid, N.M.A.
Haw, C.Y.
Chiu, W.S.
Khanis, N.H.
Rohaizad, A.
Khiew, P.S.
Rahman, S.A.
author_sort Rashid, N.M.A.
title Structural- and optical-properties analysis of single crystalline hematite (α-Fe2O3) nanocubes prepared by one-pot hydrothermal approach
title_short Structural- and optical-properties analysis of single crystalline hematite (α-Fe2O3) nanocubes prepared by one-pot hydrothermal approach
title_full Structural- and optical-properties analysis of single crystalline hematite (α-Fe2O3) nanocubes prepared by one-pot hydrothermal approach
title_fullStr Structural- and optical-properties analysis of single crystalline hematite (α-Fe2O3) nanocubes prepared by one-pot hydrothermal approach
title_full_unstemmed Structural- and optical-properties analysis of single crystalline hematite (α-Fe2O3) nanocubes prepared by one-pot hydrothermal approach
title_sort structural- and optical-properties analysis of single crystalline hematite (α-fe2o3) nanocubes prepared by one-pot hydrothermal approach
publisher Royal Society of Chemistry
publishDate 2016
url http://eprints.um.edu.my/17978/
http://dx.doi.org/10.1039/c6ce00573j
_version_ 1643690574728921088
score 13.211869

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