Synthesis and Structural Analysis of Ternary Ca–Al–Fe Layered Double Hydroxides with Different Iron Contents

Hydrocalumite structured layered double hydroxides (LDHs) with various Fe<sup>3+</sup> ratios were prepared through a coprecipitation method. In order to control the Fe<sup>3+</sup> content in LDH, binary Ca–Fe LDHs were first synthesized with various Ca/Fe ratios. The X-ray...

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Autores principales:	Jing Xie, Gyeong-Hyeon Gwak, Minseop Lee, Seung-Min Paek, Jae-Min Oh
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	layered double hydroxide hydrocalumite Fe content Ca/Fe ratio Ca–Al–Fe ternary LDH Crystallography QD901-999
Acceso en línea:	https://doaj.org/article/0acbd0f84abb4bbabb5fc019700af504
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spelling	oai:doaj.org-article:0acbd0f84abb4bbabb5fc019700af5042021-11-25T17:17:53ZSynthesis and Structural Analysis of Ternary Ca–Al–Fe Layered Double Hydroxides with Different Iron Contents10.3390/cryst111112962073-4352https://doaj.org/article/0acbd0f84abb4bbabb5fc019700af5042021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4352/11/11/1296https://doaj.org/toc/2073-4352Hydrocalumite structured layered double hydroxides (LDHs) with various Fe<sup>3+</sup> ratios were prepared through a coprecipitation method. In order to control the Fe<sup>3+</sup> content in LDH, binary Ca–Fe LDHs were first synthesized with various Ca/Fe ratios. The X-ray diffraction pattern showed that only a limited Ca/Fe ratio resulted in LDH formation. The Fe<sup>3+</sup> content in LDH was controlled by applying Al<sup>3+</sup> while the divalent and trivalent metal ratio was set to 2. Through X-ray diffraction patterns, ternary LDHs with Ca–Al–Fe composition were successfully synthesized without significant impurities, with the Al increasing crystallinity. Quantification showed that Al moiety participated in the formation of the LDH framework more than Ca and Fe, implying a structural stabilization in the presence of Al. In order to investigate the global and local structure of Fe moiety in the LDH, both solid state UV-vis and X-ray absorption spectroscopies were carried out. Both spectroscopies revealed that the existence of Al induced slight local distortion in coordination but global crystal stabilization.Jing XieGyeong-Hyeon GwakMinseop LeeSeung-Min PaekJae-Min OhMDPI AGarticlelayered double hydroxidehydrocalumiteFe contentCa/Fe ratioCa–Al–Fe ternary LDHCrystallographyQD901-999ENCrystals, Vol 11, Iss 1296, p 1296 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	layered double hydroxide hydrocalumite Fe content Ca/Fe ratio Ca–Al–Fe ternary LDH Crystallography QD901-999
spellingShingle	layered double hydroxide hydrocalumite Fe content Ca/Fe ratio Ca–Al–Fe ternary LDH Crystallography QD901-999 Jing Xie Gyeong-Hyeon Gwak Minseop Lee Seung-Min Paek Jae-Min Oh Synthesis and Structural Analysis of Ternary Ca–Al–Fe Layered Double Hydroxides with Different Iron Contents
description	Hydrocalumite structured layered double hydroxides (LDHs) with various Fe<sup>3+</sup> ratios were prepared through a coprecipitation method. In order to control the Fe<sup>3+</sup> content in LDH, binary Ca–Fe LDHs were first synthesized with various Ca/Fe ratios. The X-ray diffraction pattern showed that only a limited Ca/Fe ratio resulted in LDH formation. The Fe<sup>3+</sup> content in LDH was controlled by applying Al<sup>3+</sup> while the divalent and trivalent metal ratio was set to 2. Through X-ray diffraction patterns, ternary LDHs with Ca–Al–Fe composition were successfully synthesized without significant impurities, with the Al increasing crystallinity. Quantification showed that Al moiety participated in the formation of the LDH framework more than Ca and Fe, implying a structural stabilization in the presence of Al. In order to investigate the global and local structure of Fe moiety in the LDH, both solid state UV-vis and X-ray absorption spectroscopies were carried out. Both spectroscopies revealed that the existence of Al induced slight local distortion in coordination but global crystal stabilization.
format	article
author	Jing Xie Gyeong-Hyeon Gwak Minseop Lee Seung-Min Paek Jae-Min Oh
author_facet	Jing Xie Gyeong-Hyeon Gwak Minseop Lee Seung-Min Paek Jae-Min Oh
author_sort	Jing Xie
title	Synthesis and Structural Analysis of Ternary Ca–Al–Fe Layered Double Hydroxides with Different Iron Contents
title_short	Synthesis and Structural Analysis of Ternary Ca–Al–Fe Layered Double Hydroxides with Different Iron Contents
title_full	Synthesis and Structural Analysis of Ternary Ca–Al–Fe Layered Double Hydroxides with Different Iron Contents
title_fullStr	Synthesis and Structural Analysis of Ternary Ca–Al–Fe Layered Double Hydroxides with Different Iron Contents
title_full_unstemmed	Synthesis and Structural Analysis of Ternary Ca–Al–Fe Layered Double Hydroxides with Different Iron Contents
title_sort	synthesis and structural analysis of ternary ca–al–fe layered double hydroxides with different iron contents
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/0acbd0f84abb4bbabb5fc019700af504
work_keys_str_mv	AT jingxie synthesisandstructuralanalysisofternarycaalfelayereddoublehydroxideswithdifferentironcontents AT gyeonghyeongwak synthesisandstructuralanalysisofternarycaalfelayereddoublehydroxideswithdifferentironcontents AT minseoplee synthesisandstructuralanalysisofternarycaalfelayereddoublehydroxideswithdifferentironcontents AT seungminpaek synthesisandstructuralanalysisofternarycaalfelayereddoublehydroxideswithdifferentironcontents AT jaeminoh synthesisandstructuralanalysisofternarycaalfelayereddoublehydroxideswithdifferentironcontents
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Synthesis and Structural Analysis of Ternary Ca–Al–Fe Layered Double Hydroxides with Different Iron Contents

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