利用高效 Al2O3@g-C3N4 纳米吸附剂去除污染水中的镍(II)离子

IF 6.7 3区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Science: Advanced Materials and Devices Pub Date : 2024-05-16 DOI:10.1016/j.jsamd.2024.100742
Saad Aldoihi , Abdulrahman Mallah , Abdullah H. Alluhayb , Mohamed R. Elamin , Nuha Y. Elamin , Laila S. Alqarni , Mohamed Ali Ben Aissa , Abueliz Modwi
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引用次数: 0

摘要

水系统中的有毒金属对全球健康构成威胁。因此,多功能水监测和处理材料必不可少。镍离子是一种常见的重金属污染物,会影响生态系统的功能。然而,开发负担得起的高效去除重金属的功能性材料仍是一个难题。本研究探讨了利用 Al2O3@g-C3N4 (AlCN) 纳米吸附剂吸附水溶液中的镍(II)离子。理化分析证实,AlCN 纳米吸附剂的平均粒径为 31.25 nm,比表面积为 58 m2/g。批量吸附实验考察了 pH 值、初始镍(II)浓度和吸附剂剂量对使用合成(AlCN)纳米吸附剂去除镍(II)效率的影响。结果表明,在 g-C3N4 纳米片中添加 Al2O3 可提高吸附容量,在理想条件下最高可达 410 mg/g。Ni (II) 离子在 AlCN 纳米吸附剂上的吸附动力学遵循伪二阶动力学模型,R2 值为 0.99,超过了 Elovich 伪一阶模型。吸附等温线结果表明,Langmuir 模型比 Freundlich 和 Temkin 模型更适合实验数据,表明 AlCN 纳米吸附剂的吸附过程为单层吸附。此外,AlCN 还具有多元素吸附能力和良好的可回收性。这些发现表明所制造的复合材料可作为水处理的候选材料。
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Utilization of efficient Al2O3@g-C3N4 nano sorbent for eliminated Ni (II) ions from polluted water

Toxic metals in water systems pose a global health risk. Thus, multifunctional water monitoring and treatment materials are indispensable. Nickel ions, a frequent heavy metal pollutant, affect ecosystem function. However, developing affordable, functional materials for efficient heavy metal removal remains problematic. This study investigates the utilization of Al2O3@g-C3N4 (AlCN) nanosorbent for adsorbing Ni (II) ions from aqueous solutions. The physicochemical analyses verify the creation of an AlCN nanosorbent with a mean size of 31.25 nm crystals and a specific surface area of 58 m2/g. Batch adsorption experiments were conducted to examine the impact of pH, initial Ni (II) concentration, and adsorbent dose on the efficiency of Ni (II) removal using the synthesized (AlCN) nanosorbent. Adding Al2O3 to g-C3N4 nanosheets increased the adsorption capacity to a maximum of 410 mg/g under ideal conditions, as demonstrated by the results. Ni (II) ions adsorption kinetics on AlCN nanosorbents follow the pseudo-second-order kinetic model with an R2 value of 0.99, surpassing the Elovich pseudo-first model. The adsorption isotherm results show that the Langmuir model fits the experimental data better than the Freundlich and Temkin models, indicating a monolayer adsorption process for the AlCN nanosorbent. In addition, the AlCN exhibited multi-elemental adsorption ability and good recyclability. These findings can nominate the fabricated composite as a candidate for water treatment.

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来源期刊
Journal of Science: Advanced Materials and Devices
Journal of Science: Advanced Materials and Devices Materials Science-Electronic, Optical and Magnetic Materials
CiteScore
11.90
自引率
2.50%
发文量
88
审稿时长
47 days
期刊介绍: In 1985, the Journal of Science was founded as a platform for publishing national and international research papers across various disciplines, including natural sciences, technology, social sciences, and humanities. Over the years, the journal has experienced remarkable growth in terms of quality, size, and scope. Today, it encompasses a diverse range of publications dedicated to academic research. Considering the rapid expansion of materials science, we are pleased to introduce the Journal of Science: Advanced Materials and Devices. This new addition to our journal series offers researchers an exciting opportunity to publish their work on all aspects of materials science and technology within the esteemed Journal of Science. With this development, we aim to revolutionize the way research in materials science is expressed and organized, further strengthening our commitment to promoting outstanding research across various scientific and technological fields.
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