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微波辅助合成光碳量子点及其从水溶液中吸附的
Hebat-Allah S Tohamy1, Mohamed El-Sakhawy2, Samir Kamel1
1Cellulose and Paper Department, National Research Centre, 33 El Bohouth Str., P.O. 12622, Dokki, Giza, Egypt.
Scientific reports
|July 12, 2023
概括
酸碳量子点 (AJ-N-CQDs) 通过化学吸收有效地从水中去除 (Cr(VI)). 这些纳米材料还显示出开发光化学传感器的潜力.
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:
- (Cr) 是水溶液中的有毒重金属污染物.
- 开发有效的吸附剂来去除Cr (VI) 对于环境修复至关重要.
- 碳量子点 (CQD) 为吸附应用提供了独特的特性.
研究的目的:
- 为了研究吸附行为,两的Janus酸化碳量子点 (AJ-N-CQDs).
- 通过AJ-N-CQDs阐明Cr (VI) 的吸附动力学和吸附机制.
- 探索AJ-N-CQD作为化学传感器的潜力.
主要方法:
- 使用AJ-N-CQD进行吸附实验,以从水溶液中去除Cr (VI).
- 用伪一阶,二阶和博伊德模型分析了吸附动力学.
- 在Cr(VI) 吸附之前和之后测量了AJ-N-CQD的光光谱.
主要成果:
- 第二阶段吸附动力学模型显示出更好的匹配,表明化学吸附过程.
- 伪第一阶模型也提供了合适的值,表明化学吸收和物理吸收的组合.
- 博伊德模型表明,外部扩散是Cr (VI) 吸附的重要因素.
- AJ-N-CQDs的高表面积促进了快速的Cr (VI) 吸附.
- 在Cr(VI) 吸附后观察到光谱的变化.
结论:
- AJ-N-CQDs是有效的吸附剂,可以从水溶液中去除Cr (VI).
- 吸附机制包括外部扩散和化学吸收.
- AJ-N-CQD显示出在光化学传感器中用于Cr (VI) 检测的潜力.
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