A spectroscopic study on the effect of acid concentration on the physicochemical properties of calcined halloysite nanotubes

IF 1.8 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

Journal of the Australian Ceramic Society Pub Date : 2024-02-20 DOI:10.1007/s41779-024-01003-z

Meryem Türkay Aytekin Aydın

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Abstract

Halloysite nanotubes a naturally occurring type of clay with unique properties. This research intends to investigate of the effects of hydrochloric acid treatment on the physicochemical and pore properties of halloysite nanotubes. X-ray diffraction (XRD), field emission scanning electron microscopy (SEM), Fourier-transform infrared (FT-IR) spectroscopy, the nitrogen adsorption-desorption isotherm (BET), thermogravimetric analyses (TGA-DTA) and X-ray photoelectron spectroscopy (XPS) were used to analyze the structure of natural, calcined, and acid-treated calcined halloysite nanotubes. From the analysis of XRD, SEM, FT-IR, BET, and TGA-DTA, it was possible to infer that activation with HCl on the calcined nanotubes allowed for an increase in the specific surface area and the volume of pores while maintaining the tubular structure of these materials. Because the samples’ tubular structure was preserved, the study’s goal was to evaluate the effects of acid treatment on calcined halloysite nanotubes for use as potential adsorbents. The influence of treatment with hydrochloric acid on the structure of halloysite nanotubes calcinated at different temperatures was investigated using a surface sensitive XPS method.

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酸浓度对煅烧埃洛石纳米管理化性质影响的光谱研究

纳米埃洛石是一种天然粘土，具有独特的性质。本研究旨在探讨盐酸处理对纳米埃洛石的物理化学和孔隙特性的影响。采用 X 射线衍射 (XRD)、场发射扫描电子显微镜 (SEM)、傅立叶变换红外光谱 (FT-IR)、氮吸附-解吸等温线 (BET)、热重分析 (TGA-DTA) 和 X 射线光电子能谱 (XPS) 分析了天然、煅烧和酸处理煅烧埃洛石纳米管的结构。通过对 XRD、SEM、FT-IR、BET 和 TGA-DTA 的分析，可以推断出用盐酸对煅烧过的纳米管进行活化可以增加比表面积和孔隙体积，同时保持这些材料的管状结构。由于样品的管状结构得以保留，该研究的目标是评估酸处理对煅烧过的埃洛石纳米管作为潜在吸附剂的影响。使用表面敏感 XPS 方法研究了盐酸处理对不同温度下煅烧的埃洛石纳米管结构的影响。

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来源期刊

Journal of the Australian Ceramic Society Materials Science-Materials Chemistry

CiteScore

3.70

自引率

5.30%

发文量

123

期刊介绍： Publishes high quality research and technical papers in all areas of ceramic and related materials Spans the broad and growing fields of ceramic technology, material science and bioceramics Chronicles new advances in ceramic materials, manufacturing processes and applications Journal of the Australian Ceramic Society since 1965 Professional language editing service is available through our affiliates Nature Research Editing Service and American Journal Experts at the author''s cost and does not guarantee that the manuscript will be reviewed or accepted