CeO/g-CN纳米复合材料的制备及其抗菌性能研究
Preparation and Antibacterial Performance Study of CeO/g-CN Nanocomposite Materials.
作者信息
Zhang Jingtao, Nan Ruichun, Liang Tianzhu, Zhao Yuheng, Zhang Xinxin, Zhu Mengzhen, Li Ruoyu, Sun Xiaodong, Chen Yisong, Liu Bingkun
机构信息
Key Laboratory of Vegetable Biology of Hainan Province, School of Food and Bioengineering, College of Tobacco Science and Engineering, Zhengzhou University of Light Industry, 136 Kexue Road, Zhengzhou 450002, China.
Key Laboratory of Vegetable Biology of Hainan Province, The Institute of Vegetables, Hainan Academy of Agricultural Sciences, 14 Xingdan Road, Haikou 571100, China.
出版信息
Molecules. 2024 Nov 25;29(23):5557. doi: 10.3390/molecules29235557.
In response to the challenges of food spoilage and water pollution caused by pathogenic microorganisms, CeO/g-CN nanocomposites were synthesized via one-step calcination using thiourea and urea as precursors. Steady-state photoluminescence (PL) spectroscopy analysis demonstrated that 8 wt% CeO/g-CN exhibited superior electron-hole separation efficiency. Quantitative antimicrobial assays demonstrated that the nanocomposites displayed enhanced bactericidal activity against , , and . Electron paramagnetic resonance (EPR) spectroscopy analysis verified the generation of hydroxyl radicals (·OH) and superoxide radicals (·O) during the photo-Fenton process utilizing CeO/g-CN nanocomposites. Additionally, 8 wt% CeO/g-CN nanocomposites demonstrated enhanced photocatalytic degradation of rhodamine B (RhB) and tetracycline hydrochloride (TC) under photo-Fenton conditions.
为应对病原微生物引起的食物腐败和水污染挑战，以硫脲和尿素为前驱体，通过一步煅烧合成了CeO₂/g-C₃N₄纳米复合材料。稳态光致发光（PL）光谱分析表明，8 wt% CeO₂/g-C₃N₄表现出优异的电子-空穴分离效率。定量抗菌试验表明，该纳米复合材料对大肠杆菌、金黄色葡萄球菌和枯草芽孢杆菌显示出增强的杀菌活性。电子顺磁共振（EPR）光谱分析证实，在利用CeO₂/g-C₃N₄纳米复合材料的光芬顿过程中产生了羟基自由基（·OH）和超氧自由基（·O₂⁻）。此外，8 wt% CeO₂/g-C₃N₄纳米复合材料在光芬顿条件下对罗丹明B（RhB）和盐酸四环素（TC）表现出增强的光催化降解性能。
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