An easy access to nanocrystalline alkaline earth metal fluorides - just by shaking

被引：23

作者：

Dreger, M. ^{[1
]}

Scholz, G. ^{[1
]}

Kemnitz, E. ^{[1
]}

机构：

[1] Univ Berlin, Dept Chem, D-12489 Berlin, Germany

来源：

SOLID STATE SCIENCES | 2012年 / 14卷 / 04期

关键词：

Mechanochemistry; High energy ball milling; Alkaline earth fluorides; NH4F; MGF2; THIN-FILMS; IONIC-CONDUCTIVITY; CALCIUM-FLUORIDE; CAF2; CRYSTALS; BALIF3; SRF2;

D O I：

10.1016/j.solidstatesciences.2012.01.009

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

High energy ball milling as fast, direct and solvent free method allows an easy access to nanocrystalline alkaline earth metal fluorides MF2 (M: Mg, Ca, Sr, Ba). Comparable metal sources (acetates, carbonates, hydroxides, alkoxides) were used for the reaction with NH4F as fluorinating agent. Even very simple manual shaking experiments between NH4F and the corresponding hydroxides in the stoichiometric ratio (M:F = 1:2, M: Ca, Sr, Ba) give phase pure fluorides. Moreover, comparable classical thermal reactions in closed crucibles at higher temperatures provide phase pure crystalline fluorides in nearly all cases as well. (C) 2012 Elsevier Masson SAS. All rights reserved.

引用

页码：528 / 534

页数：7

共 28 条

[21] Local fluorine environments in nanoscopic magnesium hydr(oxide) fluorides studied by 19F MAS NMR [J].