Testing of silica-chitosan decorated NiFe2O4 magnetic nano-adsorbents for adsorption of Pb(II), Zn(II), and Cd(II) ions from aqueous solution

IF 1.4 4区物理与天体物理 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

AIP Advances Pub Date : 2025-10-01 DOI:10.1063/5.0291245

Tareq Kareri, Syed Murad Ali Shah, Shazia Shukrullah, Muhammad Irfan, Mohammed Jalalah, Muawia Abdelkafi Magzoub Mohamed Ali

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Abstract

Water contamination with toxic heavy metals such as Pb(II), Zn(II), and Cd(II) poses a serious environmental and health challenge. This study aims to develop efficient and reusable nanoadsorbents for wastewater treatment. Chitosan-functionalized NiFe2O4@SiO2 (NiFe2O4@SiO2-chitosan) core–shell nanospheres were synthesized using a co-precipitation method to produce NiFe2O4 nanoparticles, followed by silica coating and surface modification with chitosan. The functionalized nanocomposites demonstrated high adsorption capacities of 258.39 mg/g for Pb(II), 246.91 mg/g for Zn(II), and 224.21 mg/g for Cd(II). The adsorption behavior aligned with the Langmuir isotherm model, indicating monolayer coverage, while the kinetics followed a pseudo-second-order model, confirming chemisorption via coordination with the amino groups. The nanospheres also exhibited superparamagnetic behavior with a magnetization (Ms) of 12.41 emu/g, enabling rapid magnetic separation, and retained a removal efficiency of 77%–81% after five regeneration cycles. Overall, NiFe2O4@SiO2-chitosan nanocomposites demonstrate strong potential as sustainable, reusable, and magnetically separable adsorbents for the effective removal of heavy metals from wastewater.

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二氧化硅-壳聚糖修饰NiFe2O4磁性纳米吸附剂对水溶液中Pb（II）、Zn（II）和Cd（II）离子的吸附性能研究

含铅（II）、锌（II）和镉（II）等有毒重金属的水污染构成了严重的环境和健康挑战。本研究旨在开发高效、可重复使用的纳米吸附剂用于废水处理。采用共沉淀法合成了壳聚糖功能化的NiFe2O4@SiO2 （NiFe2O4@SiO2-chitosan）核壳纳米球，制备了NiFe2O4纳米粒子，然后进行二氧化硅包覆和壳聚糖表面改性。功能化纳米复合材料对Pb（II）、Zn（II）和Cd（II）的吸附量分别为258.39 mg/g、246.91 mg/g和224.21 mg/g。吸附行为符合Langmuir等温线模型，表明单层覆盖，而动力学遵循伪二阶模型，证实通过与氨基配位进行化学吸附。纳米微球还表现出超顺磁性，磁化强度（Ms）为12.41 emu/g，实现了快速磁分离，并在5次再生循环后保持了77%-81%的去除率。总体而言，NiFe2O4@SiO2-chitosan纳米复合材料作为可持续、可重复使用和可磁分离的吸附剂，在有效去除废水中的重金属方面表现出强大的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

AIP Advances NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

2.80

自引率

6.20%

发文量

1233

审稿时长

2-4 weeks

期刊介绍： AIP Advances is an open access journal publishing in all areas of physical sciences—applied, theoretical, and experimental. All published articles are freely available to read, download, and share. The journal prides itself on the belief that all good science is important and relevant. Our inclusive scope and publication standards make it an essential outlet for scientists in the physical sciences. AIP Advances is a community-based journal, with a fast production cycle. The quick publication process and open-access model allows us to quickly distribute new scientific concepts. Our Editors, assisted by peer review, determine whether a manuscript is technically correct and original. After publication, the readership evaluates whether a manuscript is timely, relevant, or significant.

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