A study of the effect of structural transformations in the course of Ce2(C2O4)3•10H2O thermal decomposition on the morphology of CeO2 obtained

被引：10

作者：

Maslennikov, D. V. ^{[1
]}

Matvienko, A. A. ^{[1
,2
]}

Sidelnikov, A. A. ^{[1
]}

Chizhik, S. A. ^{[1
,2
]}

机构：

[1] RAS, Inst Solid State Chem & Mechanochem, SB, Kutateladze Str 18, Novosibirsk 630128, Russia

[2] Novosibirsk State Univ, Pirogova Str 2, Novosibirsk 630090, Russia

来源：

MATERIALS TODAY-PROCEEDINGS | 2017年 / 4卷 / 11期

关键词：

thermal decomposition; ceria; nanoparticles; pseudomorph; precursor; cerium oxalate decahydrate;

D O I：

10.1016/j.matpr.2017.09.036

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cerium oxalate decahydrate was subjected to a thermal decomposition to obtain nanocrystalline ceria. It was shown that conditions during dehydration strongly influence morphology of the final product. If one performs dehydration of the precursor under a vacuum or in air, CeO2 can be obtained in pseudomorph, i.e. the precursor's crystal shape is retained. An increase of water vapor pressure leads to the formation of different intermediates and fragmentation of the precursor's crystals. Investigation by various physical methods (TEM, XRD, and BET) provided the information that the final product consisted of CeO2 particles 5-6 nm in size. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：11495 / 11499

页数：5

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