New insights into polymer mediated formation of anatase mesocrystals

Boytsova V. Olga; Alexey A. Sadovnikov; Khursand E. Yorov; Artemii N. Beltiukov; Alexander E. Baranchikov; Vladimir K. Ivanov; Xiangli Zhong; David J. Lewis; Paul O'Brien; Andrew J. Sutherland

doi:10.1039/C6CE01985D

New insights into polymer mediated formation of anatase mesocrystals

Boytsova V. Olga^*, Alexey A. Sadovnikov, Khursand E. Yorov, Artemii N. Beltiukov, Alexander E. Baranchikov, Vladimir K. Ivanov, Xiangli Zhong, David J. Lewis, Paul O'Brien, Andrew J. Sutherland

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Abstract

The reaction between (NH₄)₂TiF₆ and H₃BO₃ in the presence of varying quantities of PEG-6000 was used to form NH4TiOF₃ mesocrystals (MCs). The amount of PEG-6000, employed as a template, is crucial to the formation of defect free, non-agglomerated NH₄TiOF₃ MCs; high concentrations lead to MC agglomeration, lower ones result in centralized defects. This polymer-mediated formation process may be understood using an analogy with known polymerization reactions. The oxofluorotitanate MCs readily undergo a thermal topotactic transformation to give anatase MCs with photocatalytic activity. The TiO₂ MCs are porous, with highly orientated lamellar crystallites that form part of the larger mesocrystal structure.

Original language	English
Pages (from-to)	3281-3287
Number of pages	7
Journal	Crystengcomm
Volume	19
Issue number	24
DOIs	https://doi.org/10.1039/C6CE01985D
Publication status	Published - 23 May 2017

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title = "New insights into polymer mediated formation of anatase mesocrystals",

abstract = "The reaction between (NH4)2TiF6 and H3BO3 in the presence of varying quantities of PEG-6000 was used to form NH4TiOF3 mesocrystals (MCs). The amount of PEG-6000, employed as a template, is crucial to the formation of defect free, non-agglomerated NH4TiOF3 MCs; high concentrations lead to MC agglomeration, lower ones result in centralized defects. This polymer-mediated formation process may be understood using an analogy with known polymerization reactions. The oxofluorotitanate MCs readily undergo a thermal topotactic transformation to give anatase MCs with photocatalytic activity. The TiO2 MCs are porous, with highly orientated lamellar crystallites that form part of the larger mesocrystal structure.",

author = "Olga, {Boytsova V.} and Sadovnikov, {Alexey A.} and Yorov, {Khursand E.} and Beltiukov, {Artemii N.} and Baranchikov, {Alexander E.} and Ivanov, {Vladimir K.} and Xiangli Zhong and Lewis, {David J.} and Paul O'Brien and Sutherland, {Andrew J.}",

year = "2017",

month = may,

day = "23",

doi = "10.1039/C6CE01985D",

language = "English",

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pages = "3281--3287",

journal = "Crystengcomm",

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publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - New insights into polymer mediated formation of anatase mesocrystals

AU - Olga, Boytsova V.

AU - Sadovnikov, Alexey A.

AU - Yorov, Khursand E.

AU - Beltiukov, Artemii N.

AU - Baranchikov, Alexander E.

AU - Ivanov, Vladimir K.

AU - Zhong, Xiangli

AU - Lewis, David J.

AU - O'Brien, Paul

AU - Sutherland, Andrew J.

PY - 2017/5/23

Y1 - 2017/5/23

N2 - The reaction between (NH4)2TiF6 and H3BO3 in the presence of varying quantities of PEG-6000 was used to form NH4TiOF3 mesocrystals (MCs). The amount of PEG-6000, employed as a template, is crucial to the formation of defect free, non-agglomerated NH4TiOF3 MCs; high concentrations lead to MC agglomeration, lower ones result in centralized defects. This polymer-mediated formation process may be understood using an analogy with known polymerization reactions. The oxofluorotitanate MCs readily undergo a thermal topotactic transformation to give anatase MCs with photocatalytic activity. The TiO2 MCs are porous, with highly orientated lamellar crystallites that form part of the larger mesocrystal structure.

AB - The reaction between (NH4)2TiF6 and H3BO3 in the presence of varying quantities of PEG-6000 was used to form NH4TiOF3 mesocrystals (MCs). The amount of PEG-6000, employed as a template, is crucial to the formation of defect free, non-agglomerated NH4TiOF3 MCs; high concentrations lead to MC agglomeration, lower ones result in centralized defects. This polymer-mediated formation process may be understood using an analogy with known polymerization reactions. The oxofluorotitanate MCs readily undergo a thermal topotactic transformation to give anatase MCs with photocatalytic activity. The TiO2 MCs are porous, with highly orientated lamellar crystallites that form part of the larger mesocrystal structure.

UR - http://pubs.rsc.org/en/Content/ArticleLanding/2017/CE/C6CE01985D#!divAbstract

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U2 - 10.1039/C6CE01985D

DO - 10.1039/C6CE01985D

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SN - 1466-8033

VL - 19

SP - 3281

EP - 3287

JO - Crystengcomm

JF - Crystengcomm

IS - 24

ER -

New insights into polymer mediated formation of anatase mesocrystals

Abstract

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