当前位置：
X-MOL 学术
›
Biomater. Sci.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Green synthesis of CeO2 and Zr/Sn-dual doped CeO2 nanoparticles with photoantioxidant and antibiofilm activities
Biomaterials Science ( IF 5.8 ) Pub Date : 2021-4-28 , DOI: 10.1039/d1bm00298h Siti Najihah Naidi 1 , Fazlurrahman Khan 2 , Ai Ling Tan 1 , Mohammad Hilni Harunsani 1 , Young-Mog Kim 3 , Mohammad Mansoob Khan 1
Biomaterials Science ( IF 5.8 ) Pub Date : 2021-4-28 , DOI: 10.1039/d1bm00298h Siti Najihah Naidi 1 , Fazlurrahman Khan 2 , Ai Ling Tan 1 , Mohammad Hilni Harunsani 1 , Young-Mog Kim 3 , Mohammad Mansoob Khan 1
Affiliation
|
Cerium oxide (CeO2) and 1%, 5% and 10% zirconium/tin-dual doped CeO2 nanoparticles (Zr/Sn-dual doped CeO2 NPs) were synthesized using an aqueous leaf extract of Pometia pinnata. By using UV-visible diffuse reflectance spectroscopy, the band gap energies of these materials were found to be in the range of ∼2.49 to 2.66 eV. The average crystallite sizes of the fluorite phase obtained from X-ray diffraction were between 7 and 16 nm. X-ray photoelectron spectroscopy (XPS) analysis further confirmed the synthesis of CeO2 and Sn-doped CeO2 NPs. Almost spherical shapes of the nanomaterials with an average particle size of 12–17 nm were determined using scanning electron microscopy and transmission electron microscopy studies. Photoantioxidant activities of the synthesized materials showed enhanced photoantioxidant response under visible light irradiation in comparison with those under dark conditions in both dose- and time-dependent manner. The CeO2 NPs exhibited a significant concentration-dependent antibiofilm activity against the Gram-positive bacteria Staphylococcus aureus (S. aureus) and Listeria monocytogenes (L. monocytogenes). Only the 10% Zr/Sn-dual doped-CeO2 NPs were found to inhibit S. aureus biofilm formation at higher concentrations. All Zr/Sn-dual doped CeO2 NPs exhibited a concentration-dependent biofilm inhibition of L. monocytogenes and also bactericidal activity towards S. aureus. These nanomaterials exhibited enhanced photoantioxidant activities and antibacterial properties, which make them suitable for various biological applications.
中文翻译：
具有光抗氧化剂和抗生物膜活性的CeO2和Zr / Sn双掺杂CeO2纳米粒子的绿色合成
利用Pometia pinnata的叶子提取物合成了氧化铈（CeO 2）和1％，5％和10％的锆/锡双掺杂CeO 2纳米颗粒（Zr / Sn双掺杂CeO 2 NPs）。通过使用紫外-可见漫反射光谱法，发现这些材料的带隙能在约2.49至2.66 eV的范围内。通过X射线衍射获得的萤石相的平均微晶尺寸在7至16nm之间。X射线光电子能谱（XPS）分析进一步证实了CeO 2和Sn掺杂CeO 2的合成NP。使用扫描电子显微镜和透射电子显微镜研究确定了平均粒径为12-17 nm的纳米材料的几乎球形。合成材料的光抗氧化剂活性在可见光辐射下比在黑暗条件下以剂量和时间依赖的方式表现出增强的光抗氧化剂响应。CeO 2 NPs对革兰氏阳性细菌金黄色葡萄球菌（S. aureus）和单核细胞增生李斯特菌（L. monocytogenes）表现出明显的浓度依赖性抗生物膜活性。仅发现10％Zr / Sn双掺杂CeO 2 NP抑制金黄色葡萄球菌更高浓度的生物膜形成。所有Zr / Sn双掺杂的CeO 2 NP均表现出单核细胞增生李斯特菌的浓度依赖性生物膜抑制作用，并且对金黄色葡萄球菌具有杀菌活性。这些纳米材料表现出增强的光抗氧化剂活性和抗菌性能，使其适合各种生物学应用。
更新日期：2021-04-29
中文翻译：
具有光抗氧化剂和抗生物膜活性的CeO2和Zr / Sn双掺杂CeO2纳米粒子的绿色合成
利用Pometia pinnata的叶子提取物合成了氧化铈（CeO 2）和1％，5％和10％的锆/锡双掺杂CeO 2纳米颗粒（Zr / Sn双掺杂CeO 2 NPs）。通过使用紫外-可见漫反射光谱法，发现这些材料的带隙能在约2.49至2.66 eV的范围内。通过X射线衍射获得的萤石相的平均微晶尺寸在7至16nm之间。X射线光电子能谱（XPS）分析进一步证实了CeO 2和Sn掺杂CeO 2的合成NP。使用扫描电子显微镜和透射电子显微镜研究确定了平均粒径为12-17 nm的纳米材料的几乎球形。合成材料的光抗氧化剂活性在可见光辐射下比在黑暗条件下以剂量和时间依赖的方式表现出增强的光抗氧化剂响应。CeO 2 NPs对革兰氏阳性细菌金黄色葡萄球菌（S. aureus）和单核细胞增生李斯特菌（L. monocytogenes）表现出明显的浓度依赖性抗生物膜活性。仅发现10％Zr / Sn双掺杂CeO 2 NP抑制金黄色葡萄球菌更高浓度的生物膜形成。所有Zr / Sn双掺杂的CeO 2 NP均表现出单核细胞增生李斯特菌的浓度依赖性生物膜抑制作用，并且对金黄色葡萄球菌具有杀菌活性。这些纳米材料表现出增强的光抗氧化剂活性和抗菌性能，使其适合各种生物学应用。
京公网安备 11010802027423号