具有高效镉吸附性能的新型磁性海藻酸盐/羟基磷灰石复合材料

IF 0.6 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materiali in tehnologije Pub Date : 2024-02-06 DOI:10.17222/mit.2023.927

Xiao Xiao, Jiabei Zhou, Dali Zhou, Liang Li, Yingjiang Wu, Xiang Zhou, Lang Du, Honggen Chen

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引用次数: 0

摘要

重金属污染（如 Cd(II)）被认为是一个严重的环境问题，对人类构成了极大的威胁。本研究采用简便的湿化学方法，成功合成了一种具有高效 Cd(II) 吸附性能的新型水分散磁性海藻酸盐/羟基磷灰石复合材料。磁分离实验和磁性能分析表明，磁性海藻酸盐/羟基磷灰石复合材料可在磁场下有效分离。zeta电位结果和分散性实验表明，pH=5时的最低zeta电位为-39.4 mV，120分钟后，所得到的样品在Cd(II)溶液中分散良好。在 pH = 5 时，样品对 Cd（II）的最大吸附容量为 135.3 mg g-1，10 分钟后 Cd（II）的吸附达到平衡。利用 Langmuir 模型可以很好地拟合吸附数据，吸附动力学遵循假二阶动力学模型。

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NOVEL MAGNETIC ALGINATE/HYDROXYAPATITE COMPOSITE WITH HIGH-EFFICIENCY CADMIUM-ADSORPTION PERFORMANCE

Heavy-metal pollution (such as Cd(II)) is regarded as a serious environmental problem, posing a great threat to human beings. In this research, a novel water-dispersible magnetic alginate/hydroxyapatite composite with high-efficiency Cd(II) adsorption performance was successfully synthesized by a facile wet-chemical method. The magnetic separation experiment and magnetic property analysis indicate that a magnetic alginate/hydroxyapatite composite can be effectively separated under a magnetic field. The zeta-potential result and dispersity experiment indicate that the lowest zeta-potential is –39.4 mV at pH = 5, and the obtained sample dispersed well in a Cd(II) solution after 120 min. The maximum adsorption capacity of a sample on Cd(II) is 135.3 mg g–1 at pH = 5, and the adsorption of Cd(II) reached equilibrium in 10 min. The adsorption data could be fitted well using the Langmuir model, and the adsorption kinetic follows a pseudo-second-order kinetic model.

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来源期刊

Materiali in tehnologije 工程技术-材料科学：综合

CiteScore

1.30

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： The journal MATERIALI IN TEHNOLOGIJE/MATERIALS AND TECHNOLOGY is a scientific journal, devoted to original papers and review scientific papers concerned with the areas of fundamental and applied science and technology. Topics of particular interest include metallic materials, inorganic materials, polymers, vacuum technique and lately nanomaterials.