新型纳米磁性吸附剂的合成、表征及应用研究

IF 3.6 4区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Reviews on Advanced Materials Science Pub Date : 2023-11-24 DOI:10.1515/rams-2023-0145

Norah Salem Alsaiari, Majed Salem Alsaiari, Fatimah Mohammed Alzahrani, Abdelfattah Amari, Mohamed A. Tahoon

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引用次数: 0

摘要

合成一种去除水中铬离子的高效吸附剂具有挑战性。因此，本研究以金属-有机骨架(MOF, ZIF-8)为牺牲模板，柑橘皮为生物炭源，氧化铁纳米颗粒为磁化源，采用一锅水热法制备了Fe3O4/生物炭/ZIF-8纳米磁铁复合材料。所合成的纳米复合材料对Cr(vi)离子具有较高的吸附效率。吸附研究表明，Langmuir等温模型和拟二阶模型均能很好地描述实验数据。根据Langmuir模型，Fe3O4/生物炭和Fe3O4/生物炭/ZIF-8对Cr(vi)的吸附量分别为77 mg·g−1和125 mg·g−1，表明MOF对提高吸附性能有一定作用。Fe3O4/生物炭/ZIF-8在较宽的pH范围内对共存离子具有优异的吸附性能，使用不同的洗脱液研究了可重复使用5个连续循环。研究结果表明，这种纳米吸附剂是一种很有前途的去除环境水样中污染物的材料。

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Synthesis, characterization, and application of the novel nanomagnet adsorbent for the removal of Cr(vi) ions

The synthesis of an efficient adsorbent to remove chromium ions from water is challenging. Therefore, in this study, a new nanomagnet composite (Fe3O4/biochar/ZIF-8) was synthesized by a one-pot hydrothermal method using a metal–organic framework (MOF, ZIF-8) as a sacrificial template, citrus peels as a source of biochar, and iron oxide nanoparticles for magnetization. The synthesized nanocomposite showed a high efficiency toward the adsorption of Cr(vi) ions. The adsorption study showed that the experimental data were well-described using the Langmuir isotherm model and pseudo-second-order model. According to the Langmuir model, the adsorption capacities toward Cr(vi) adsorption were 77 and 125 mg·g−1 for Fe3O4/biochar and Fe3O4/biochar/ZIF-8, respectively, indicating the role of MOF in improving the adsorption performance. The Fe3O4/biochar/ZIF-8 showed an excellent adsorption performance in the presence of coexisting ions at a wide pH range using different eluents to study reusability up to five successive cycles. We can conclude from this study that this nanoadsorbent is a promising material for removing pollutants from environmental water samples.

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来源期刊

Reviews on Advanced Materials Science 工程技术-材料科学：综合

CiteScore

5.10

自引率

11.10%

发文量

审稿时长

3.5 months

期刊介绍： Reviews on Advanced Materials Science is a fully peer-reviewed, open access, electronic journal that publishes significant, original and relevant works in the area of theoretical and experimental studies of advanced materials. The journal provides the readers with free, instant, and permanent access to all content worldwide; and the authors with extensive promotion of published articles, long-time preservation, language-correction services, no space constraints and immediate publication. Reviews on Advanced Materials Science is listed inter alia by Clarivate Analytics (formerly Thomson Reuters) - Current Contents/Physical, Chemical, and Earth Sciences (CC/PC&ES), JCR and SCIE. Our standard policy requires each paper to be reviewed by at least two Referees and the peer-review process is single-blind.