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首页> 外文期刊>Cellulose >Fast and simple approach for production of antibacterial nanocellulose/cuprous oxide hybrid films
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Fast and simple approach for production of antibacterial nanocellulose/cuprous oxide hybrid films

机译：生产抗菌纳米纤维素/亚铜杂种膜的快速简便的方法

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摘要

In this work, a new, simple, cost-efficient and environmentally friendly water-based approach for the production of antibacterial nanocellulose/Cu2O hybrid films was developed. The cuprous oxide nanoparticles were obtained by the microwave-assisted polyol synthesis using glycerol as a green reducing agent. The obtained samples were characterized using scanning electron microscopy (SEM) together with EDX analysis and elemental mapping, UV/Vis spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction analysis, dynamic light scattering. The results of UV/Vis spectroscopy confirmed the efficient synthesis of cuprous oxide nanoparticles showing a distinct absorption peak at 469 nm. The direct band gap energy of Cu2O NPs is 2.10 eV. SEM images showed that Cu2O NPs were well distributed in the nanocellulose matrix. Antibacterial activity of the samples was investigated against two gram-positive bacterial species, Bacillus cereus and B. thuringiensis, and gram-negative E. coli by a disk-diffusion and liquid broth tests. In the dark, the hybrid films showed good antibacterial activity against all tested bacterial strains. In liquid broth containing the hybrid films, B. thuringiensis was more sensitive than E. coli to Cu2O NPs after 12 h of incubation. The Cu2O NPs do not cause toxicity for mammalian cell cultures in the same concentrations, in which they are highly toxic for bacteria. The hybrid nanocellulose/Cu2O films made of nontoxic, biodegradable reagents have a potential application in the field of treatment of wounds and skin infections.
机译：在这项工作中，我们开发了一种新的、简单、经济且环境友好的水基方法来制备抗菌纳米纤维素/Cu2O杂化膜。以甘油为绿色还原剂，采用微波辅助多元醇合成法制备了氧化亚铜纳米颗粒。使用扫描电子显微镜（SEM）、EDX分析和元素映射、紫外/可见光谱、傅里叶变换红外光谱、X射线衍射分析、动态光散射对所得样品进行了表征。紫外/可见光谱的结果证实了氧化亚铜纳米颗粒的有效合成，在469 nm处显示出明显的吸收峰。Cu2O纳米颗粒的直接带隙能量为2.10ev。SEM图像显示，Cu2O纳米颗粒均匀分布在纳米纤维素基体中。通过纸片扩散和液体发酵试验，研究了样品对两种革兰氏阳性细菌蜡样芽孢杆菌和苏云金芽孢杆菌以及革兰氏阴性大肠杆菌的抗菌活性。在黑暗中，杂交膜对所有受试菌株均表现出良好的抗菌活性。在含有杂交膜的液体培养液中，苏云金芽孢杆菌比大肠杆菌在培养12h后对Cu2O NP更敏感。Cu2O NP在相同浓度下不会对哺乳动物细胞培养物产生毒性，因为它们对细菌具有高度毒性。由无毒、可生物降解试剂制成的纳米纤维素/Cu2O杂化膜在伤口和皮肤感染治疗领域具有潜在的应用前景。

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  • 来源
    《Cellulose》 |2021年第5期|共15页
  • 作者

    Evdokimova O. L.; Belousova M. E.; Evdokimova A. V.; Kusova T. V.; Baranchikov A. E.; Antonets K. S.; Nizhnikov A. A.; Agafonov A. V.;

  • 作者单位

    Russian Acad Sci GA Krestov Inst Solut Chem Lab Chem Hybrid Nanomat &

    Supermol Syst Acad Skaja Ul 1 Ivanovo 153045 Russia;

    All Russia Res Inst Agr Microbiol Lab Prote Supraorganismal Syst Podbelskogo Sh 3 St Petersburg 196608 Russia;

    Ivanovo State Univ Chem &

    Technol Pr Sheremetevskiy 7 Ivanovo 153000 Russia;

    Russian Acad Sci GA Krestov Inst Solut Chem Lab Chem Hybrid Nanomat &

    Supermol Syst Acad Skaja Ul 1 Ivanovo 153045 Russia;

    Russian Acad Sci Kurnakov Inst Gen &

    Inorgan Chem Moscow 119991 Russia;

    All Russia Res Inst Agr Microbiol Lab Prote Supraorganismal Syst Podbelskogo Sh 3 St Petersburg 196608 Russia;

    All Russia Res Inst Agr Microbiol Lab Prote Supraorganismal Syst Podbelskogo Sh 3 St Petersburg 196608 Russia;

    Russian Acad Sci GA Krestov Inst Solut Chem Lab Chem Hybrid Nanomat &

    Supermol Syst Acad Skaja Ul 1 Ivanovo 153045 Russia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 有机化学;
  • 关键词

    Nanocellulose; Cuprous oxide; Glycerol; Microwave; Antibacterial activity; Film; Cytotoxicity;

    机译：纳米纤维素;氧化亚铜;甘油;微波;抗菌活性;薄膜;细胞毒性;

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