绿色合成及纳米CdO对直接红31染料的声催化性能研究

Q1 Environmental Science

Case Studies in Chemical and Environmental Engineering Pub Date : 2024-12-18 DOI:10.1016/j.cscee.2024.101076

Safaa Ridah Shakor, Ali Naghipour, Saeid Taghavi Fardood

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引用次数: 0

摘要

这项工作介绍了绿色合成，表征和声催化活性的CdO纳米颗粒。采用XRD、FESEM、EDX-Mapping、BET、DRS和TEM等手段对CdO NPs进行了表征。TEM图像显示纳米颗粒呈球形，直径约为30 nm。BET分析显示其比表面积为28.28 m2/g， DRS显示其带隙为1.98 eV。在20 min内，CdO纳米粒子对DR31的声催化降解效率为97%，对TOC的去除率为74%。自由基清除剂实验表明，•OH在降解机制中起主导作用。通过LC-MS分析确定了降解副产物及其机理。

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Green synthesis and sonocatalytic performance of CdO nanoparticles for efficient degradation of direct red 31 dye

This work presents the green synthesis, characterization, and sonocatalytic activity of CdO nanoparticles. The CdO NPs were characterized by XRD, FESEM, EDX-Mapping, BET, DRS, and TEM. The TEM image revealed that nanoparticles were spherical and approximately 30 nm. BET analysis showed a surface area of 28.28 m²/g, and DRS indicated a band gap of 1.98 eV. The CdO nanoparticles exhibited 97 % sonocatalytic degradation efficiency for DR31 and 74 % TOC removal in 20 min. Radical scavenger experiments demonstrated that •OH played a dominant role in the degradation mechanism. The degradation by-products and the proposed mechanism were confirmed through LC–MS analysis.

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