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使用三金属核心外Ag-TeO₂@ZnO纳米复合材料从废水中以阳光为媒介去除内分泌干扰物

Preeti Joshi¹, Rajendra Patel², Aishwarya Singh¹

¹Department of Applied Sciences and Humanities, Indira Gandhi Delhi Technical University for Women, Delhi 110006, India.

|July 2, 2024

概括

这项研究开发了银-二氧化物@氧化 (Ag-TeO2@ZnO) 纳米复合材料,用于有效的光催化降解2,4-二二等污染物. 这些稳定的纳米复合材料在自然阳光下显示出出色的可重复使用性和有效性.

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:

由有机化合物如2,4-二二和β-纳夫托尔造成的污染对环境构成风险.
开发高效且可重复使用的光催化剂对于环境修复至关重要.

研究的目的:

为了合成和表征三金属核心外Ag-TeO2@ZnO纳米复合材料 (NCs).
评估这些NCs在自然阳光下降解2,4-二二和β-纳夫托的光催化效率.

主要方法:

Ag-TeO2@ZnO NCs的热力学制备.
使用FE-SEM,BET表面积分析和UV-Vis光谱学进行表征.
在自然阳光下进行光催化降解实验.
电化学研究 (循环电压测量,电化学阻抗光谱) 和ROS的确定.

主要成果:

Ag和TeO2纳米粒子成功地沉积在ZnO纳米管上,增加了特定表面积.
纳米复合材料的带隙减少到2.96 eV.
实现了高降解效率:95.6%的β-naphthol在40分钟和99.6%的2,4-DCP在180分钟.
光催化活性归因于超氧化基的形成.

结论:

合成的Ag-TeO2@ZnONCs具有出色的光催化活性和稳定性.
这些纳米复合材料至少可重复使用三个循环,证明了它们在实际环境应用中的潜力.
这项研究提供了关于光催化降解机制的见解,其中涉及反应性氧物种.

关键词:

2,4-二二醇的使用情况.核心-外的核心-外是什么循环电压测量循环电压测量光催化作用的光催化作用添加银剂的TeO2@ZnOO是没有的.三金属的三金属化这是一种β-纳夫托.

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