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Crystallinity depends on choice of iron salt precursor in the continuous hydrothermal synthesis of Fe–Co oxide nanoparticles

Jian Liu, Isabella Römer, Selina Vi Yu Tang, Eugenia Valsami-Jones, Richard Palmer Orcid Logo

RSC Advances, Volume: 7, Issue: 59, Pages: 37436 - 37440

Swansea University Author: Richard Palmer Orcid Logo

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DOI (Published version): 10.1039/C7RA06647C

Abstract

A series of Fe–Co oxide nanoparticles (NPs) were prepared by a continuous hydrothermal method using iron nitrate and ammonium iron citrate as alternative iron precursors. The crystallinity, Fe/Co composition and element spatial distribution in the synthesised NPs were investigated using X-ray diffra...

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Published in: RSC Advances
ISSN: 2046-2069
Published: 2017
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URI: https://cronfa.swan.ac.uk/Record/cronfa34966
first_indexed 2017-08-22T12:55:59Z
last_indexed 2018-02-09T05:25:38Z
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spelling 2017-10-16T10:45:36.9591796 v2 34966 2017-08-22 Crystallinity depends on choice of iron salt precursor in the continuous hydrothermal synthesis of Fe–Co oxide nanoparticles 6ae369618efc7424d9774377536ea519 0000-0001-8728-8083 Richard Palmer Richard Palmer true false 2017-08-22 ACEM A series of Fe–Co oxide nanoparticles (NPs) were prepared by a continuous hydrothermal method using iron nitrate and ammonium iron citrate as alternative iron precursors. The crystallinity, Fe/Co composition and element spatial distribution in the synthesised NPs were investigated using X-ray diffraction (XRD), aberration-corrected scanning transmission electron microscopy (ac-STEM) imaging, energy-dispersive X-ray spectroscopy (EDX) and electron energy loss spectroscopy (EELS). Strong dependence on the choice of iron salt was observed. We demonstrate that the presence of ammonium citrate markedly improves the crystallinity of the NPs; an ordered cobalt ferrite alloy is formed. We suggest this is due to the formation of a homogenous reaction environment during the thermal decomposition of ammonium citrate, and the formation of complexes among citrate, Fe and Co ions. Journal Article RSC Advances 7 59 37436 37440 2046-2069 31 12 2017 2017-12-31 10.1039/C7RA06647C COLLEGE NANME Aerospace, Civil, Electrical, and Mechanical Engineering COLLEGE CODE ACEM Swansea University 2017-10-16T10:45:36.9591796 2017-08-22T10:26:48.3318846 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering Jian Liu 1 Isabella Römer 2 Selina Vi Yu Tang 3 Eugenia Valsami-Jones 4 Richard Palmer 0000-0001-8728-8083 5 0034966-22082017103001.pdf liu2017(3).pdf 2017-08-22T10:30:01.4230000 Output 2087087 application/pdf Version of Record true 2017-08-22T00:00:00.0000000 true eng
title Crystallinity depends on choice of iron salt precursor in the continuous hydrothermal synthesis of Fe–Co oxide nanoparticles
spellingShingle Crystallinity depends on choice of iron salt precursor in the continuous hydrothermal synthesis of Fe–Co oxide nanoparticles
Richard Palmer
title_short Crystallinity depends on choice of iron salt precursor in the continuous hydrothermal synthesis of Fe–Co oxide nanoparticles
title_full Crystallinity depends on choice of iron salt precursor in the continuous hydrothermal synthesis of Fe–Co oxide nanoparticles
title_fullStr Crystallinity depends on choice of iron salt precursor in the continuous hydrothermal synthesis of Fe–Co oxide nanoparticles
title_full_unstemmed Crystallinity depends on choice of iron salt precursor in the continuous hydrothermal synthesis of Fe–Co oxide nanoparticles
title_sort Crystallinity depends on choice of iron salt precursor in the continuous hydrothermal synthesis of Fe–Co oxide nanoparticles
author_id_str_mv 6ae369618efc7424d9774377536ea519
author_id_fullname_str_mv 6ae369618efc7424d9774377536ea519_***_Richard Palmer
author Richard Palmer
author2 Jian Liu
Isabella Römer
Selina Vi Yu Tang
Eugenia Valsami-Jones
Richard Palmer
format Journal article
container_title RSC Advances
container_volume 7
container_issue 59
container_start_page 37436
publishDate 2017
institution Swansea University
issn 2046-2069
doi_str_mv 10.1039/C7RA06647C
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering
document_store_str 1
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description A series of Fe–Co oxide nanoparticles (NPs) were prepared by a continuous hydrothermal method using iron nitrate and ammonium iron citrate as alternative iron precursors. The crystallinity, Fe/Co composition and element spatial distribution in the synthesised NPs were investigated using X-ray diffraction (XRD), aberration-corrected scanning transmission electron microscopy (ac-STEM) imaging, energy-dispersive X-ray spectroscopy (EDX) and electron energy loss spectroscopy (EELS). Strong dependence on the choice of iron salt was observed. We demonstrate that the presence of ammonium citrate markedly improves the crystallinity of the NPs; an ordered cobalt ferrite alloy is formed. We suggest this is due to the formation of a homogenous reaction environment during the thermal decomposition of ammonium citrate, and the formation of complexes among citrate, Fe and Co ions.
published_date 2017-12-31T13:17:35Z
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score 11.247077

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