Preparation of nanodispersed fluorite-type Sr1-xRxF2+x(R=Er, Yb, Ho) phases from citrate solutions

被引：14
|
作者：
Fedorov, Pavel P. [1 ,3 ]
Luginina, Anna A. [1 ,2 ]
Ermakova, Julia A. [1 ]
Kuznetsov, Sergey V. [1 ]
Voronov, Valery V. [1 ]
Uvarov, Oleg V. [1 ]
Pynenkov, Alexandr A. [3 ]
Nishchev, Konstantin N. [3 ]
机构：
[1] RAS, AM Prokhorov Gen Phys Inst, Ul Vavilova 38, Moscow 119991, Russia
[2] VINITI RAS, All Russian Inst Sci & Tech Informat, Ul Usievicha 20, Moscow 125190, Russia
[3] NP Ogarev Mordovia State Univ, Ul Bolshevistskaya 68, Saransk 430005, Russia
来源：
JOURNAL OF FLUORINE CHEMISTRY | 2017年 / 194卷
关键词：
Inorganic fluorides; Nanoparticles; Solid solutions; Rare earths; Chemical synthesis; Citrate complexe; UP-CONVERSION NANOPARTICLES; SOL-GEL; STRONTIUM FLUORIDE; AQUEOUS-SOLUTIONS; OPTICAL CERAMICS; CITRIC-ACID; NANOCRYSTALS; CELLULOSE; SURFACE; GROWTH;
D O I：
10.1016/j.jfluchem.2016.12.003
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Fluorite-type Sr1-xRxF2+x (R = Er, Yb, Ho) phases were precipitated from aqueous citrate solutions. Compounds in the series Sr1-xRxF2+x (R = Er, Yb, Ho) formed 5-9 nm weakly-agglomerated powders and/or aqueous colloidal solutions. Surfaces of such nanoparticles were modified in situ by citrate complexes. The phase composition, morphology and size of the formed Sr1-xRxF2+x (R = Er, Yb, Ho) hanoparticles were affected by several factors, including R:citrate and Sr:citrate precursor ratios, pH and initial solution concentrations, choice of fluorinating agent (HF or NH4F), order of starting material addition, thermal treatment conditions, etc. All synthesized specimens were characterized by X-ray powder diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetry analysis (TGA), and transmission electron microscopy (TEM) techniques. (C) 2016 Elsevier B.V. All rights reserved.
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页码：8 / 15
页数：8
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