Synthesis of BaCO3 Nanopowder by the Gel-combustion Method at Different Calcination Temperatures and Characterization of the Samples by TEM and XRD

被引：0

作者：

Zelati, Amir ^{[1
]}

Amirabadizadeh, Ahmad ^{[1
]}

Kompany, Ahmad ^{[2
]}

Larimi, Zobadeh Momeni ^{[1
]}

机构：

[1] Univ Birjand, Dept Phys, Birjand, Iran

[2] Ferdowsi Univ Mashhad, Dept Phys, Mashhad, Iran

来源：

CHEMISTRY AND CHEMICAL PROCESS | 2011年

关键词：

barium carbonate; Witherite; nanopowder; gel-combustion method; TEM; XRD; CITRIC-ACID; NANO-PARTICLES; RATIO;

D O I：

暂无

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Barium carbonate nanopowder with composition BaCO3 (Witherite) was prepared in this research. The gel-combustion method was applied to reach the required result. A precursor sol was obtained from barium nitrate. The molar ratio of citrate/nitrate=1.3 (CA/NO3- =1.3) was used to prepare very fine powders of barium carbonate. The gels resulting from these sols were transformed into powders by an auto combustion process at <= 400 degrees C. The powders consisted of orthorhombic BaCO3 and one another additional phase. The barium carbonate nano-particles produced by the gel-combustion method were calcined in three different calcination temperatures T = 450 degrees C, T = 600 degrees C and 750 degrees C. The pure orthorhombic phase was found at 450 degrees C. The effect of calcination temperature was studied in three various temperatures. The size of particles were produced by this method are between lnm to 10nm. TEM and XRD were used for characterization of the samples.

引用

页码：146 / 150

页数：5

共 11 条

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