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硫烯功能化二维Ti₃C₂T_xMXene用于在水样中有效去除Hg²⁺

Jinghua Liu¹, Zhanyi Zhao¹, Rulin Xu¹

¹Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.

Journal of hazardous materials

|July 17, 2024

概括

硫基功能化Ti3C2Tx (SH-Ti3C2Tx) 有效地从水中去除 (Hg2+). 这种新型吸附剂具有高容量,优异的再生能力,并有可能用于连续流水处理应用.

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:

水生环境中的 (Hg2+) 污染带来了重大风险.
现有的去除的方法经常面临效率和再生方面的挑战.
像Ti3C2Tx这样的二维材料为开发新型吸附剂提供了潜力.

研究的目的:

开发一种高效的吸收剂,用于从水中去除离子 (Hg2+).
用硫基组对Ti3C2Tx进行功能化,以增强吸附特性.
评估新型吸附剂的吸附能力,再生能力和连续流动性能.

主要方法:

通过与dithiothreitol的共价键合成硫基功能化Ti3C2Tx (SH-Ti3C2Tx).
描述了材料的结构,表面积和层间间距.
进行了批量吸附实验,以确定Hg2+吸附能力.
使用HCl-thiourea进行了再生研究,并使用SH-Ti3C2Tx装载的胺海绵柱进行了连续流去除的测试.

主要成果:

与原始的Ti3C2Tx相比,SH-Ti3C2Tx的特定表面积增加了3倍.
最大Hg2+吸附能力达到了3042 mg/g,比Ti3C2Tx高2.3倍.
通过使用HCl-thiourea在多个吸附再生周期中实现了高效的再生.
连续流量柱实现了超过95%的Hg2+从高度和低度溶液中去除.

结论:

SH-Ti3C2Tx显示出卓越的Hg2+吸附性能和可回收性.
该材料的增强表面积和功能组有助于提高吸附能力.
基于SH-Ti3C2Tx的吸附柱显示出对水中的污染进行实用,现场的修复的前景.

关键词:

吸附方式吸附方式吸附方式重金属的去除重金属的去除.离子是一种离子.这就是SH-功能化.Ti(3)C(2)T(x) 的时间

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