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β-NaFeO铁氧体纳米颗粒在光催化降解、抗菌和抗氧化应用中的协同效应。

Synergistic effects of β-NaFeO ferrite nanoparticles for photocatalytic degradation, antibacterial, and antioxidant applications.

作者信息

Jabeen Tahira, Khan Muhammad Shahid, Javaid Sana, Azeem Waqar, Ayoub Rabia, Motola Martin

机构信息

Institute of Physics, The Islamia University of Bahawalpur Bahawalpur 63100 Pakistan

Faculty of Resilience, Rabdan Academy Abu Dhabi United Arab Emirates.

出版信息

RSC Adv. 2024 Apr 17;14(18):12513-12527. doi: 10.1039/d4ra02430c. eCollection 2024 Apr 16.

DOI:10.1039/d4ra02430c
PMID:38633481
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11022939/
Abstract

Here, synthesis and thorough characterization of β-NaFeO nanoparticles utilizing a co-precipitation technique is presented. XRD analysis confirmed a hexagonal-phase structure of β-NaFeO. SEM revealed well-dispersed spherical nanoparticles with an average diameter of 45 nm. The FTIR spectrum analysis revealed weak adsorption bands at 1054 cm suggested metal-metal bond stretching (Fe-Na). UV-Visible spectroscopy indicates a 4.4 eV optical band gap. Colloidal stability of β-NaFeO was evidenced Zeta potential (-28.5 mV) and Dynamic Light Scattering (DLS) measurements. BET analysis reveals a substantial 343.27 m g surface area with mesoporous characteristics. Antioxidant analysis indicates efficacy comparable to standard antioxidants, while concentration-dependent antibacterial effects suggest enhanced efficacy against Gram-positive bacteria, particularly Streptococcus. The Photocatalytic activity of β-NaFeO showed significant pollutant degradation (>90% efficiency), with increased degradation rates at higher nanoparticle concentrations, indicating potential for environmental remediation applications.

摘要

本文介绍了利用共沉淀技术合成和全面表征β-NaFeO纳米颗粒的过程。X射线衍射（XRD）分析证实了β-NaFeO的六方相结构。扫描电子显微镜（SEM）显示出平均直径为45 nm的分散良好的球形纳米颗粒。傅里叶变换红外光谱（FTIR）分析显示在1054 cm处有弱吸附带，表明存在金属-金属键拉伸（Fe-Na）。紫外-可见光谱表明光学带隙为4.4 eV。通过zeta电位（-28.5 mV）和动态光散射（DLS）测量证明了β-NaFeO的胶体稳定性。BET分析显示具有介孔特征的表面积高达343.27 m²/g。抗氧化分析表明其功效与标准抗氧化剂相当，而浓度依赖性抗菌作用表明对革兰氏阳性菌，特别是链球菌的功效增强。β-NaFeO的光催化活性显示出显著的污染物降解（效率>90%），在较高纳米颗粒浓度下降解速率增加，表明其在环境修复应用中的潜力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0146/11022939/8a4c6f0963a7/d4ra02430c-f9.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0146/11022939/11c86a57a1ed/d4ra02430c-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0146/11022939/8a4c6f0963a7/d4ra02430c-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0146/11022939/8bf52c6ffeda/d4ra02430c-f1.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0146/11022939/0525e57dcd9c/d4ra02430c-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0146/11022939/5379c2757406/d4ra02430c-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0146/11022939/2316e4d52ea4/d4ra02430c-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0146/11022939/11c86a57a1ed/d4ra02430c-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0146/11022939/8a4c6f0963a7/d4ra02430c-f9.jpg

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