The synthesis of cobalt nanoparticles by solution combustion synthesis method in a new reactor at low-temperature conditions

IF 4.2 Q2 NANOSCIENCE & NANOTECHNOLOGY
M. Barati, B. Khoshandam
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引用次数: 0

Abstract

The novelty of the present paper was the construction of a new reactor to synthesize the cobalt nanoparticles (NPs) by solution combustion synthesis (SCS) method for reducing the processing temperature of cobalt production. To perform the SCS process, a reactor was designed and constructed and the synthesis process was performed using cobalt (II) nitrate-6-water as oxidizer along with glycine and urea as fuels. The effect of the molar ratio of glycine fuel to oxidizer and fuel type parameters on the purity of the products were examined. The XRD and FESEM analysis were used to characterize the obtained products. Based on FESEM analysis and the Scherrer equation, the mean size of all samples was under 100 nm and the reactor loaded with the glycine fuel provided the lowest particle sizes by around 14 nm and produced particles with better surface adhesion. It was found that the glycine fuel was determined the best fuel compared to urea because of producing temperatures near 400°C. Compared to traditional gas-solid reactions, the operating temperature of this process was under 400°C which was considerably lower than the operating temperature of gas-solid reactions occurred at temperatures higher than 800°C.
采用溶液燃烧合成法在新型反应器中低温条件下合成钴纳米颗粒
本文的新颖之处在于构建了一种新的反应器,采用溶液燃烧合成(SCS)法合成钴纳米颗粒(NPs),以降低钴生产的加工温度。为了实现SCS工艺,设计并构建了反应器,并以硝酸钴(II) -6-水为氧化剂,甘氨酸和尿素为燃料进行了合成过程。考察了甘氨酸燃料与氧化剂的摩尔比和燃料类型参数对产品纯度的影响。用XRD和FESEM对所得产物进行了表征。基于FESEM分析和Scherrer方程,所有样品的平均粒径都在100 nm以下,其中负载甘氨酸燃料的反应器提供的粒径最小,约为14 nm,并且产生的颗粒表面粘附性更好。结果表明,与尿素相比,甘氨酸燃料被确定为最佳燃料,因为其生产温度接近400℃。与传统的气固反应相比,该工艺的操作温度在400℃以下,大大低于800℃以上气固反应的操作温度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
6.00
自引率
1.70%
发文量
24
期刊介绍: Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems is a peer-reviewed scientific journal published since 2004 by SAGE Publications on behalf of the Institution of Mechanical Engineers. The journal focuses on research in the field of nanoengineering, nanoscience and nanotechnology and aims to publish high quality academic papers in this field. In addition, the journal is indexed in several reputable academic databases and abstracting services, including Scopus, Compendex, and CSA's Advanced Polymers Abstracts, Composites Industry Abstracts, and Earthquake Engineering Abstracts.
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