Room temperature synthesis of copper-modified ZIF-8/Chitosan for enhanced adsorptive removal of congo red

Q1 Social Sciences

South African Journal of Chemical Engineering Pub Date : 2024-04-21 DOI:10.1016/j.sajce.2024.04.006

Ummu Kulsum , Hamzah Fansuri , Eko Santoso , Lely Kurniawati , Alvin Romadhoni Putra Hidayat , Liyana Labiba Zulfa , Mustafa Al Bakri Abdullah , Ratna Ediati

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Abstract

The synthesis of Cu(II)-doped ZIF-8/Chitosan by means of the one-pot method at room temperature was successfully carried out. The synthesized materials exhibit enhanced adsorption properties for the removal of Congo red (CR) dye. The structural and morphological properties of Cu(II)-doped ZIF-8/Chitosan were characterized. Cu(II)-doped ZIF-8/Chitosan achieved the most optimal CR removal efficiency and CR adsorption capacity (153.85 mg/g) due to its higher specific surface area (522.776 m²/g) compared to ZIF-8/Chitosan (514.882 m²/g). Electrostatic attraction, hydrogen bonding, and π-π interaction are the main interactions for the higher adsorption performance. The CR adsorption process followed pseudo-second-order kinetic model and Langmuir isotherm model. The results of the thermodynamic adsorption indicated that the process of CR adsorption by Cu-doped ZIF-8/Chitosan was an endothermic reaction. The experimental results indicate that the Cu(II)-doped ZIF-8/Chitosan material has the potential to be used in wastewater treatment for the removal of anionic dyes.

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室温合成铜改性 ZIF-8/Chitosan 以增强对刚果红的吸附去除能力

采用一锅法在室温下成功合成了掺杂Cu(II)的ZIF-8/壳聚糖。合成的材料在去除刚果红（CR）染料方面表现出更强的吸附性能。对掺杂 Cu(II)ZIF-8/Chitosan 的结构和形态特性进行了表征。与ZIF-8/壳聚糖（514.882 m2/g）相比，掺杂Cu(II)的ZIF-8/壳聚糖具有更高的比表面积（522.776 m2/g），因而具有最佳的刚果红去除率和刚果红吸附容量（153.85 mg/g）。静电吸引、氢键和 π-π 作用是吸附性能较高的主要相互作用。CR 吸附过程遵循伪二阶动力学模型和 Langmuir 等温线模型。热力学吸附结果表明，掺铜 ZIF-8/Chitosan 对 CR 的吸附过程是一个内热反应。实验结果表明，掺杂 Cu(II) 的 ZIF-8/Chitosan 材料有望用于废水处理中去除阴离子染料。

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来源期刊

South African Journal of Chemical Engineering Social Sciences-Education

CiteScore

8.40

自引率

0.00%

发文量

100

审稿时长

33 weeks

期刊介绍： The journal has a particular interest in publishing papers on the unique issues facing chemical engineering taking place in countries that are rich in resources but face specific technical and societal challenges, which require detailed knowledge of local conditions to address. Core topic areas are: Environmental process engineering • treatment and handling of waste and pollutants • the abatement of pollution, environmental process control • cleaner technologies • waste minimization • environmental chemical engineering • water treatment Reaction Engineering • modelling and simulation of reactors • transport phenomena within reacting systems • fluidization technology • reactor design Separation technologies • classic separations • novel separations Process and materials synthesis • novel synthesis of materials or processes, including but not limited to nanotechnology, ceramics, etc. Metallurgical process engineering and coal technology • novel developments related to the minerals beneficiation industry • coal technology Chemical engineering education • guides to good practice • novel approaches to learning • education beyond university.