Zr 掺杂对水提 Pometia pinnata 叶制备的 CeO NPs 光抗氧化和抗生物膜性能的影响。
Effect of Zr doping on photoantioxidant and antibiofilm properties of CeO NPs fabricated using aqueous leaf extract of Pometia pinnata.
机构信息
Chemical Sciences, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, BE 1410, Brunei Darussalam.
Research Center for Marine Integrated Bionics Technology, Pukyong National University, Busan, 48513, South Korea.
出版信息
Bioprocess Biosyst Eng. 2022 Feb;45(2):279-295. doi: 10.1007/s00449-021-02656-x. Epub 2021 Nov 2.
Synthesized cerium oxide nanoparticles (S-CeO NPs) and 1%, 5% and 10% zirconium doped CeO (Zr-doped CeO) NPs were fabricated using aqueous leaf extract of Pometia pinnata. The synthesized NPs were characterized using standard techniques which confirmed successful synthesis of NPs with particle size ranging from 12 to 23 nm and band gap energy of 2.54-2.66 eV. Photoantioxidant activities showed enhanced activities under visible light irradiation in comparison to the dark condition in the dose-dependent study. Biofilm inhibition studies showed ~ 73% biofilm inhibition of Staphylococcus aureus at 512 µg/mL for S-CeO, whereas 10% Zr-doped CeO NPs showed biofilm inhibition of 52.7%. The bactericidal tests showed killing properties at 1024 µg/mL of S-CeO NPs and at 512 µg/mL of 1% Zr-doped CeO. Reduced bactericidal activities were observed for 5% and 10% Zr-doped CeO. These studies showed that the fabricated NPs have both good photoantioxidant and antibacterial properties.
合成的氧化铈纳米粒子（S-CeO NPs）和 1%、5%和 10%氧化锆掺杂的 CeO（Zr 掺杂的 CeO）纳米粒子是使用琴叶榕的水提叶提取物制备的。使用标准技术对合成的 NPs 进行了表征，证实成功合成了粒径为 12 至 23nm 且带隙能为 2.54-2.66eV 的 NPs。光抗氧化活性研究表明，在剂量依赖性研究中，与黑暗条件相比，可见光照射下的活性增强。生物膜抑制研究表明，S-CeO 在 512μg/mL 时对金黄色葡萄球菌的生物膜抑制率约为 73%，而 10%Zr 掺杂的 CeO NPs 的生物膜抑制率为 52.7%。杀菌试验表明，S-CeO NPs 在 1024μg/mL 和 1%Zr 掺杂的 CeO 在 512μg/mL 时具有杀菌性能。5%和 10%Zr 掺杂的 CeO 的杀菌活性降低。这些研究表明，所制备的 NPs 具有良好的光抗氧化和抗菌性能。
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