Preparation of MgAl-LDH/halloysite composite materials for efficient CO2 adsorption

IF 2.8 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Journal of chemical technology and biotechnology Pub Date : 2024-12-19 DOI:10.1002/jctb.7802

Wenjie Liu, Yao Zhou, Weifeng Gong, Tongtong Tang, Yu Yang, Chao Yao, ShiXiang Zuo, Xiazhang Li

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引用次数: 0

Abstract

Background

CO₂ emissions have had negative impacts on various aspects of life and the environment, making the development of materials with high CO₂ adsorption performance crucial.

Result

In this study, halloysite nanotubes (HNTs) were used as a carrier to prepare MgAl layered double hydroxide (LDH) via a convenient coprecipitation method, resulting in MgAl-LDH/HNT composite material, which was then evaluated for its CO₂ adsorption performance. The physicochemical properties of the composite material were characterized using various methods. Results showed that the 1:1 ratio MgAl-LDH/HNT composite exhibited superior material structure, with a specific surface area reaching 178.24 m² g⁻¹. In CO₂ adsorption performance tests, the 1:1 MgAl-LDH/HNT composite showed the best adsorption performance, with a CO₂ adsorption capacity of 3.91 mmol g⁻¹. This adsorption process includes physical adsorption and chemical adsorption. Kinetic analysis results indicate that the adsorption process is mainly dominated by physical adsorption. The material also demonstrated good performance in cyclic stability tests, maintaining a regeneration efficiency of over 94% after six cycles.

Conclusion

The MgAl-LDH/HNT material has good properties and stability. This provides an effective pathway and direction for the development of new adsorbents with higher CO₂ adsorption performance. © 2024 Society of Chemical Industry (SCI).

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来源期刊

Journal of chemical technology and biotechnology 工程技术-工程：化工

CiteScore

7.00

自引率

5.90%

发文量

268

审稿时长

1.7 months

期刊介绍： Journal of Chemical Technology and Biotechnology(JCTB) is an international, inter-disciplinary peer-reviewed journal concerned with the application of scientific discoveries and advancements in chemical and biological technology that aim towards economically and environmentally sustainable industrial processes.