Enhanced photocatalytic and antimicrobial performance of a multifunctional Cu-loaded nanocomposite under UV light: theoretical and experimental study
Enhanced photocatalytic and antimicrobial performance of a multifunctional Cu-loaded nanocomposite under UV light: theoretical and experimental study
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DOI：
10.1039/d2nr01710e
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发表时间：
2022-05-18
期刊：
影响因子：
6.7
通讯作者：
Matsuda, Atsunori
中科院分区：
文献类型：
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作者：
Abd Elkodous, M.;El-Khawaga, Ahmed M.;Matsuda, Atsunori
由于现代工业化和人口增长，获得清洁水已成为一项全球性挑战。在本研究中，一个金属-半导体异质结之间的Cu纳米粒子和Co 0. 5 Ni 0. 5 Fe 2 O 4/SiO2/TiO 2复合基质构建的高锰酸钾，六价铬Cr（VI）和对硝基苯胺（pNA）在紫外光下的光降解。此外，使用密度泛函理论（DFT）计算后的Cu负载的电子和吸附性能进行了评估。此外，还研究了所制备样品对病原菌和单细胞真菌的抗菌性能。光催化测量结果表明，与裸铜纳米颗粒和复合基质相比，负载铜的纳米复合材料具有出色的效率。对高锰酸钾、Cr（VI）和pNA的降解效率分别为80 min后44%、60 min后100%和90 min后65%。类似地，抗微生物评估显示高ZOI、较低MIC、较高蛋白质泄漏量，以及用负载Cu的纳米复合材料处理的几乎所有微生物的细胞裂解。
Due to modern industrialization and population growth, access to clean water has become a global challenge. In this study, a metal-semiconductor heterojunction was constructed between Cu NPs and the Co0.5Ni0.5Fe2O4/SiO2/TiO2 composite matrix for the photodegradation of potassium permanganate, hexavalent chromium Cr(vi) and p-nitroaniline (pNA) under UV light. In addition, the electronic and adsorption properties after Cu loading were evaluated using density functional theory (DFT) calculations. Moreover, the antimicrobial properties of the prepared samples toward pathogenic bacteria and unicellular fungi were investigated. Photocatalytic measurements show the outstanding efficiency of the Cu-loaded nanocomposite compared to that of bare Cu NPs and the composite matrix. Degradation efficiencies of 44% after 80 min, 100% after 60 min, and 65% after 90 min were obtained against potassium permanganate, Cr(vi), and pNA, respectively. Similarly, the antimicrobial evaluation showed high ZOI, lower MIC, higher protein leakage amount, and cell lysis of nearly all microbes treated with the Cu-loaded nanocomposite.