In-situ evolution of anodic TiO2 nanotubes to ammonium oxofluorotitanate mesocrystals and their conversion to mesocrystalline TiO2

3D ordered superstructures of mesocrystalline NH4TiOF3 and (NH4)2TiOF4 are synthesized via in-situ evolution from anodic TiO2 nanotube arrays grown on the Ti metal substrate under high current density. As revealed by X-ray diffraction, scanning electron microscopy and transmission electron microscop...

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Autores principales: Hui Li, Zixue Su
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Publicado: Elsevier 2021
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spelling oai:doaj.org-article:bad6c95f9c9647e9ae44ebdfc21ede6b2021-11-26T04:24:51ZIn-situ evolution of anodic TiO2 nanotubes to ammonium oxofluorotitanate mesocrystals and their conversion to mesocrystalline TiO21388-248110.1016/j.elecom.2021.107163https://doaj.org/article/bad6c95f9c9647e9ae44ebdfc21ede6b2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1388248121002472https://doaj.org/toc/1388-24813D ordered superstructures of mesocrystalline NH4TiOF3 and (NH4)2TiOF4 are synthesized via in-situ evolution from anodic TiO2 nanotube arrays grown on the Ti metal substrate under high current density. As revealed by X-ray diffraction, scanning electron microscopy and transmission electron microscopy characterizations, the obtained NH4TiOF3 and (NH4)2TiOF4 mesocrystals consist of well aligned nanoparticle subunits at atomic level and can be converted to TiO2 (anatase) mesocrystals with their original exterior shapes retained upon thermal annealing. Close examination suggests that NH4TiOF3 and (NH4)2TiOF4 mesocrystals form via a nonclassical crystal growth process involving fast oriented aggregation of particles assisted by electric field-dipole interaction.Hui LiZixue SuElsevierarticleNon-classical crystal growthMesocrystalAmmonium oxofluorotitanatesTiO2Electric field driven oriented attachmentIndustrial electrochemistryTP250-261ChemistryQD1-999ENElectrochemistry Communications, Vol 133, Iss , Pp 107163- (2021)
institution DOAJ
collection DOAJ
language EN
topic Non-classical crystal growth
Mesocrystal
Ammonium oxofluorotitanates
TiO2
Electric field driven oriented attachment
Industrial electrochemistry
TP250-261
Chemistry
QD1-999
spellingShingle Non-classical crystal growth
Mesocrystal
Ammonium oxofluorotitanates
TiO2
Electric field driven oriented attachment
Industrial electrochemistry
TP250-261
Chemistry
QD1-999
Hui Li
Zixue Su
In-situ evolution of anodic TiO2 nanotubes to ammonium oxofluorotitanate mesocrystals and their conversion to mesocrystalline TiO2
description 3D ordered superstructures of mesocrystalline NH4TiOF3 and (NH4)2TiOF4 are synthesized via in-situ evolution from anodic TiO2 nanotube arrays grown on the Ti metal substrate under high current density. As revealed by X-ray diffraction, scanning electron microscopy and transmission electron microscopy characterizations, the obtained NH4TiOF3 and (NH4)2TiOF4 mesocrystals consist of well aligned nanoparticle subunits at atomic level and can be converted to TiO2 (anatase) mesocrystals with their original exterior shapes retained upon thermal annealing. Close examination suggests that NH4TiOF3 and (NH4)2TiOF4 mesocrystals form via a nonclassical crystal growth process involving fast oriented aggregation of particles assisted by electric field-dipole interaction.
format article
author Hui Li
Zixue Su
author_facet Hui Li
Zixue Su
author_sort Hui Li
title In-situ evolution of anodic TiO2 nanotubes to ammonium oxofluorotitanate mesocrystals and their conversion to mesocrystalline TiO2
title_short In-situ evolution of anodic TiO2 nanotubes to ammonium oxofluorotitanate mesocrystals and their conversion to mesocrystalline TiO2
title_full In-situ evolution of anodic TiO2 nanotubes to ammonium oxofluorotitanate mesocrystals and their conversion to mesocrystalline TiO2
title_fullStr In-situ evolution of anodic TiO2 nanotubes to ammonium oxofluorotitanate mesocrystals and their conversion to mesocrystalline TiO2
title_full_unstemmed In-situ evolution of anodic TiO2 nanotubes to ammonium oxofluorotitanate mesocrystals and their conversion to mesocrystalline TiO2
title_sort in-situ evolution of anodic tio2 nanotubes to ammonium oxofluorotitanate mesocrystals and their conversion to mesocrystalline tio2
publisher Elsevier
publishDate 2021
url https://doaj.org/article/bad6c95f9c9647e9ae44ebdfc21ede6b
work_keys_str_mv AT huili insituevolutionofanodictio2nanotubestoammoniumoxofluorotitanatemesocrystalsandtheirconversiontomesocrystallinetio2
AT zixuesu insituevolutionofanodictio2nanotubestoammoniumoxofluorotitanatemesocrystalsandtheirconversiontomesocrystallinetio2
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