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在水溶液中的Ca-置换MgFe₂O₄纳米材料的合成,结构,磁性特性和Cd(II) 吸附行为

Younes Zohrabi¹, Mohammad Ebrahim Ghazi², Morteza Izadifard¹

¹Department of Physics, Shahrood University of Technology, Shahrood, Iran.

Environmental science and pollution research international

|December 15, 2023

概括

磁性纳米材料 (NM) 有效地从水中去除有毒的 (Cd2+). _0.8Ca_0.2Fe₂O₄ (MCF2) 和_0.2Ca_0.8Fe₂O₄ (MCF8) 显示出高吸附能力,证明了它们作为水处理吸附剂的潜力.

科学领域:

材料科学材料科学材料科学
环境科学环境科学
纳米技术纳米技术

背景情况:

(Cd2+) 是一种在水溶液中发现的有毒重金属污染物.
有效地去除Cd2+对环境保护和公共健康至关重要.

研究的目的:

为了合成和表征磁性纳米材料 (NMs) 的Mg_1-xCa_xFe₂O₄.
为了评估这些NMS从水溶液中去除Cd2+的吸附性能.

主要方法:

对于NM合成的Sol-gel方法.
使用XRD,TEM,SEM,EDX,FTIR,BET和VSM进行表征.
使用火焰原子吸收光谱 (AAS) 的吸附研究.

主要成果:

_0.8Ca_0.2Fe₂O₄ (MCF2) 和_0.2Ca_0.8Fe₂O₄ (MCF8) 呈现出高Cd²⁺的吸附能力 (分别为100毫克g^{-1和90毫克g^-1).}
吸附遵循伪二次动力学,最适合兰格穆尔异热模型.
对于Cd²⁺去除的最佳条件是20分钟的接触时间,pH7,3毫克的NM剂量和60毫克L^{-1的初始Cd²⁺度.}
获得的Cd去除百分比为MCF2的93%和MCF8.8的75%

结论:

合成的Mg_1-xCa_xFe₂O₄磁性纳米材料是有毒Cd²⁺的有效吸附剂.
MCF2和MCF8在废水处理中具有很大的应用潜力,用于去除重金属.

关键词:

吸附能力吸附能力吸附能力吸附机制是一种吸附机制.在Cd (II) 离子中.在MgFe2O4纳米材料中.阶段转换阶段转换

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