New insights into polymer mediated formation of anatase mesocrystals

被引：12

作者：

Boytsova, Olga V. ^{[1
,2
,3
]}

Sadovnikov, Alexey A. ^{[2
]}

Yorov, Khursand E. ^{[3
]}

Beltiukov, Artemii N. ^{[4
]}

Baranchikov, Alexander E. ^{[2
]}

Ivanov, Vladimir K. ^{[2
,5
]}

Zhong, Xiangli ^{[6
]}

Lewis, David J. ^{[6
]}

O'Brien, Paul ^{[6
,7
]}

Sutherland, Andrew J. ^{[1
]}

机构：

[1] Aston Univ, Aston Inst Mat Res, Birmingham B4 7ET, W Midlands, England

[2] RAS, Kurnakov Inst Gen & Inorgan Chem, Leninskii Ave 31, Moscow 119991, Russia

[3] Lomonosov Moscow State Univ, Leninskie Gory 1, Moscow 119992, Russia

[4] RAS, Phys Tech Inst, UB, Kirova Str 132, Izhevsk 426000, Russia

[5] Tomsk State Univ, Lenina Ave 36, Tomsk 634050, Russia

[6] Univ Manchester, Sch Mat, Oxford Rd, Manchester M13 9PL, Lancs, England

[7] Univ Manchester, Sch Chem, Oxford Rd, Manchester M13 9PL, Lancs, England

来源：

CRYSTENGCOMM | 2017年 / 19卷 / 24期

基金：

英国工程与自然科学研究理事会;

关键词：

EXPOSED; 001; FACETS; NH4TIOF3; MESOCRYSTALS; POLY(ETHYLENE GLYCOL); TIO2; THIN-FILMS; THERMAL-DEGRADATION; RADICAL-ADDITION; CRYSTAL-GROWTH; CONVERSION; SUPERSTRUCTURES;

D O I：

10.1039/c6ce01985d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The reaction between (NH4)(2)TiF6 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.

引用

页码：3281 / 3287

页数：7

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