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通过使用绿色方法介导合成氧化铈纳米颗粒以评估其催化和生物医学活性。 （注：原英文文本“by using”后缺少具体内容，此译文是根据合理推测补充完整后的翻译）

Green mediated synthesis of cerium oxide nanoparticles by using for evaluation of catalytic and biomedical activity.

作者信息

Mim Jannatul, Sultana Mst Sabiha, Dhar Palash Kumar, Hasan Md Kamrul, Dutta Sagar Kumar

机构信息

Chemistry Discipline, Khulna University Khulna 9208 Bangladesh

Agrotechnology Discipline, Khulna University Khulna 9208 Bangladesh.

出版信息

RSC Adv. 2024 Aug 13;14(35):25409-25424. doi: 10.1039/d4ra04132a. eCollection 2024 Aug 12.

DOI:10.1039/d4ra04132a
PMID:39139232
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11320963/
Abstract

The present perspective emphasizes the green synthesis of CeO-NPs using fruit extract. The synthesized NPs were characterized utilizing analytical techniques, including FT-IR, UV-vis, XRD, SEM-EDX, and VSM. Of them, XRD analysis ratifies the cubic fluorite crystal structure along with a particle size of 23.58 nm. EDX results support the presence of cerium and oxygen in a proper ratio. The surface morphology of NPs, however, was scrutinized using SEM. The lower IC value (20.8 μg mL) of NPs compared to the reference substance, ascorbic acid (33.2 μg mL), demonstrates CeO-NPs to be a compatible antioxidant. Moreover, the drug-releasing capability of CeO-NPs was a buffer pH-dependent parameter. The acidic pH solution was 20.5%, while the basic pH solution was 16.9%. The drug-releasing capability was analyzed using the Higuchi model and Korsmeyer-Peppas kinetics. The values of the determination coefficient ( ) were found to be 0.9944 and 0.9834, respectively. The photocatalytic activity of CeO-NPs was evaluated, considering methylene blue as a model dye. The degradation percentage was attained up to 56.77% after it had been exposed for 150 min. Apart from this, the synthesized NPs were screened against two fungus species, and . The percentage of growth was measured at 56% and 49%, respectively.

摘要

本文着重介绍了利用水果提取物绿色合成二氧化铈纳米颗粒（CeO-NPs）的方法。通过傅里叶变换红外光谱（FT-IR）、紫外可见光谱（UV-vis）、X射线衍射（XRD）、扫描电子显微镜-能谱仪（SEM-EDX）和振动样品磁强计（VSM）等分析技术对合成的纳米颗粒进行了表征。其中，XRD分析证实了立方萤石晶体结构以及23.58 nm的粒径。EDX结果支持了铈和氧以适当比例存在。然而，使用SEM对纳米颗粒的表面形态进行了仔细观察。与参考物质抗坏血酸（33.2 μg/mL）相比，纳米颗粒的较低半数抑制浓度（IC值，20.8 μg/mL）表明CeO-NPs是一种相容性抗氧化剂。此外，CeO-NPs的药物释放能力是一个依赖于缓冲液pH值的参数。酸性pH溶液中的药物释放率为20.5%，而碱性pH溶液中的为16.9%。使用Higuchi模型和Korsmeyer-Peppas动力学对药物释放能力进行了分析。测定系数（ ）的值分别为0.9944和0.9834。以亚甲基蓝作为模型染料评估了CeO-NPs的光催化活性。在暴露150分钟后，降解率达到了56.77%。除此之外，对合成的纳米颗粒针对两种真菌物种 和 进行了筛选。生长百分比分别测定为56%和49%。

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