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定在普鲁士蓝色纳米粒子上的氨基基改性纳米纤维可以选择性地从水中去除Cs

Shanshan Feng¹, Jingshuai Gao², Shouzhu Li³

¹School of Environmental and Safety Engineering, Changzhou University, Changzhou 213164, China; Jiangsu Petrochemical Safety and Environmental Protection Engineering Research Center, Changzhou 213164, China.

Journal of environmental sciences (China)

|July 5, 2024

概括

研究人员开发了普鲁士蓝/纳米纤维 (PB/SiO2-NH2 NFs) 来有效地从水中去除离子 (Cs+). 这些新型纳米纤维具有高吸附能力和稳定的去除率,为净化水提供了有前途的解决方案.

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:

纳米纤维 (SiO2 NFs) 在离子 (Cs+) 的选择性分离方面存在局限性.
普鲁士蓝色纳米粒子 (PBNP) 可能不稳定或难以处理.
需要一种复合材料来提高Cs+去除效率和稳定性.

研究的目的:

为了合成和表征PB/SiO2-NH2 NF,以改善Cs+吸附.
评估新型NF的吸附能力和去除速度.
为了研究吸附机制和Cs+去除的动力学.

主要方法:

合成的SiO2 NFs与3-aminopropyltriethoxysilane (APTES) 修改,以创建氨基功能组.
在氨基功能化SiO2NF表面上定PBNP.
进行吸附实验以确定容量,去除速率,同热量和动力学.

主要成果:

对于Cs+,PB/SiO2-NH2 NFs的最大吸附能力为111.38 mg/g,明显高于未经修改的SiO2 NFs.
复合NF在5个循环后保持了75.36%±3.69%的去除率.
吸附数据与弗洛伊德利希模型和准二阶段动力学相符,表明复杂的吸附机制.

结论:

PB/SiO2-NH2 NFs是从水溶液中选择性去除 Cs+ 的有效吸附剂.
该材料的性能归因于离子交换,静电吸附和膜分离的协同作用组合.
这种复合物为水中污染的补救提供了稳定高效的解决方案.

关键词:

电静电线电静电线纳米纤维纳米纤维是一种普鲁士的蓝色是普鲁士的蓝色放射性核化物放射性核化物分离分离分离分离.

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