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氨基功能化@复合素-甲纳米复合物用于从水溶液中去除Cr (VI)

Nan Li^1,2, Wenhui Lu^1,2, Deyi Zhu^1,2

¹Faculty of Light Industry, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.

|October 28, 2023

概括

氨基功能化@resorcinol-formaldehyde纳米复合材料有效地从废水中去除Cr (VI). 这些材料具有很高的吸附能力,良好的再生能力和选择性,对工业应用有很大的希望.

科学领域:

材料科学材料科学材料科学
环境化学环境化学
纳米技术纳米技术

背景情况:

六价 (Cr(VI)) 由于其高毒性和致癌性,对环境和健康构成重大风险.
从工业废水中有效地去除 (VI) 对于环境保护和公共卫生至关重要.

研究的目的:

为了合成和表征氨基功能化@resorcinol-formaldehyde (NH ₂ -SiO ₂ @RF) 纳米复合材料用于Cr(VI) 的去除.
研究合成纳米复合材料的吸附性能,机制和再生能力.

主要方法:

索尔凝技术和斯托贝尔方法用于SiO₂@RF的单合成.
(3-aminopropyl) triethoxysilane (APTES) 为氨基功能化进行修改.
使用评估形态,颗粒大小,功能组和热稳定性的技术进行表征.
在不同pH值下进行的吸附实验,配备异热和动力模型.

主要成果:

合成的NH -SiO @RF纳米复合材料表现出均的球形形态 (200nm) 和高热稳定性.
最佳的Cr (VI) 去除发生在pH 2时,吸附数据符合兰迈尔,特姆金和准二阶模型.
最大吸附能力达到272.6mg·g-1 ,具有自发和内热吸附过程.
该材料对共存离子具有较高的选择性,并且在五个循环后保持了>85%的去除.
在制厂废水中初步应用显示出出色的Cr (VI) 清除效率.

结论:

NH ₂ -SiO ₂ @RF纳米复合材料是从水溶液中去除Cr (VI) 的高效吸附剂.
合成材料具有高容量,良好的可回收性和选择性,使其适用于废水处理.
这些纳米复合材料在污染Cr6的工业废水处理中显示出实践应用的巨大潜力.

关键词:

这就是Cr (VI) 的意思.吸附吸附是一种吸附.一个水溶液的水溶液.这是一个纳米复合材料.silica@resorcinol-formaldehyde 在这里可以发送一些信息.

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