Rationalization of Hydrothermal Synthesis of NaNbO3 by Rapid in Situ Time-Resolved Synchrotron X-ray Diffraction

被引：18

作者：

Skjaervo, Susanne Linn ^{[1
]}

Wells, Kristin Hoydalsvik ^{[1
]}

Sommer, Sanna ^{[2
,3
]}

Tuong-Dan Vu ^{[1
]}

Tolchard, Julian R. ^{[1
,5
]}

van Beek, Wouter ^{[4
]}

Grande, Tor ^{[1
]}

Iversen, Bo B. ^{[2
,3
]}

Einarsrud, Mari-Ann ^{[1
]}

机构：

[1] Norwegian Univ Sci & Technol, Dept Mat Sci & Engn, N-7491 Trondheim, Norway

[2] Aarhus Univ, Dept Chem, Ctr Mat Crystallog, Langelandsgade 140, DK-8000 Aarhus C, Denmark

[3] Aarhus Univ, iNANO, Langelandsgade 140, DK-8000 Aarhus C, Denmark

[4] European Synchrotron Radiat Facil, Swiss Norwegian Beamlines, 71 Ave Martyrs,CS 40220, F-38043 Grenoble 9, France

[5] Sustainable Energy Technol, Sintef Mat & Chem, N-7465 Trondheim, Norway

来源：

CRYSTAL GROWTH & DESIGN | 2018年 / 18卷 / 02期

基金：

新加坡国家研究基金会;

关键词：

NIOBIUM; POWDERS; GROWTH;

D O I：

10.1021/acs.cgd.7b01192

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In situ monitoring of the formation of crystalline phases during conventional hydrothermal synthesis is experimentally challenging. Here, we report an in situ time-resolved synchrotron X-ray diffraction study during hydrothermal synthesis of NaNbO3 using a high-pressure custom-made capillary cell penetrable to X-rays. The high time resolution (0.1 s) revealed a sequence of transient intermediate phases, including several unknown phases, before the final perovskite NaNbO3 was formed. These new findings highlight the complexity of the hydrothermal synthesis of NaNbO3 and demonstrate the potential for obtaining in-depth knowledge of the reactions taking place by time-resolved in situ X-ray diffraction.

引用

页码：770 / 774

页数：5

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