The Role of the Aluminum Source on the Physicochemical Properties of γ-AlOOH Nanoparticles

IF 1.1 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Macedonian Journal of Chemistry and Chemical Engineering Pub Date : 2020-05-28 DOI:10.20450/mjcce.2020.1929

Rafael Romero Toledo, L. M. Esparza, J. Rosales

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引用次数: 3

Abstract

The effect on the physicochemical properties of aluminum salts on the synthesis of γ-AlOOH nanostructures has been investigated in detail using a hydrolysis-precipitation method. X-ray fluorescence (XRF), Fourier transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), field-emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM), were used to characterize the synthesized samples. The specific surface area, pore size distribution and pore diameter of the different γ-AlOOH structures were discussed by the N 2 adsorption-desorption analysis. According to the results of the nanostructure, characterization revealed that for synthesized γ-AlOOH nanostructures from AlCl 3 and Al(NO 3 ) 3 , obvious XRD peaks corresponding to the bayerite phase are found indicating an impure γ-AlOOH phase. Furthermore, the nitrogen adsorption-desorption analysis indicated that the obtained γ-AlOOH nanoparticles from Al 2 (SO 4 ) 3 of technical grade (95.0 % of purity) and low cost, possess a high BET surface area of approximately 350 m 2 /g, compared to the obtained nanostructures from aluminum sources reactive grade, which was attributed to the presence of Mg (0.9 wt.%) in its nanostructure.

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铝源对γ-AlOOH纳米粒子理化性质的影响

采用水解-沉淀法详细研究了铝盐在合成γ-AlOOH纳米结构中对物理化学性质的影响。利用X射线荧光（XRF）、傅立叶变换红外光谱（FTIR）、X射线粉末衍射（XRD）、场发射扫描电子显微镜（FESEM）和透射电子显微镜（TEM）对合成样品进行了表征。通过N2吸附-解吸分析，讨论了不同γ-AlOOH结构的比表面积、孔径分布和孔径。根据纳米结构的结果，表征表明，由AlCl3和Al（NO3）3合成的γ-AlOOH纳米结构，发现了明显的对应于bayerite相的XRD峰，表明γ-AlOOH。此外，氮吸附-解吸分析表明，从Al2（SO4）3获得的技术级（纯度为95.0%）和低成本的γ-AlOOH纳米颗粒，与从铝源获得的反应级纳米结构相比，具有约350m2/g的高BET表面积，这归因于Mg（0.9wt.%）在其纳米结构中的存在。

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

Macedonian Journal of Chemistry and Chemical Engineering 化学-工程：化工

CiteScore

1.60

自引率

20.00%

发文量

审稿时长

>12 weeks

期刊介绍： Macedonian Journal of Chemistry and Chemical Engineering (Maced. J. Chem. Chem. Eng.) is an official publication of the Society of Chemists and Technologists of Macedonia. It is a not-for-profit open acess journal published twice a year. The journal publishes original scientific papers, short communications, reviews and educational papers from all fields of chemistry, chemical engineering, food technology, biotechnology and material sciences, metallurgy and related fields. The papers published in the Journal are summarized in Chemical Abstracts.