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首页> 外文期刊>RSC Advances >Enhanced catalytic and antibacterial activities of silver nanoparticles immobilized on poly(N-vinyl pyrrolidone)-grafted graphene oxide
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Enhanced catalytic and antibacterial activities of silver nanoparticles immobilized on poly(N-vinyl pyrrolidone)-grafted graphene oxide

机译：增强了固定在聚（N-乙烯基吡咯烷酮） - 移植的石墨烯氧化物上的银纳米粒子的催化和抗菌活性

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摘要

Poly(N-vinyl pyrrolidone) (PNVP)-grafted graphene oxide (GO) (GO-PNVP) has been synthesized using a GO-based macro-RAFT agent prepared via click reaction of alkyne-terminated RAFT agent (S)-2-(propynyl propionate)-(o-ethyl xanthate) and azide-functionalized GO (GO-N-3). FTIR, XPS, Raman, TGA and DSC studies confirmed its formation. Silver nanoparticles are then immobilized on GO-PNVP and GO via in situ reduction of silver nitrate in the presence and absence of glucose at 40 and 95 degrees C, respectively. FT-IR, UV-Vis, XRD, SEM and TGA studies supported the incorporation of silver (Ag) nanoparticles. Ag nanoparticles immobilized on GO-PNVP are small, spherical and narrowly distributed (homogenous, monodisperse) compared to GO. These nanocomposites are explored as catalysts for the reduction of p-nitrophenol into p-aminophenol and also as antibacterial agents towards Gram(+) S. aureus and Gram(-) E. coli bacteria. Ag nanoparticle immobilized GO-PNVP showed efficient catalytic activity and excellent reusability along with an excellent antibacterial activity. Hence, grafting of PNVP enhances the catalytic and antibacterial properties of GO.
机译：使用通过倒数烷烃封端的筏剂（S）-2-的咔哒反应制备的基于宏观筏剂合成聚（N-乙烯基吡咯烷酮）（PNVP） - 移植的石墨烯氧化物（GO-PNVP）（GO-PNVP）。 （丙炔基） - （O-乙基黄原酸盐）和叠氮化物官能化的GO（GO-N-3）。 FTIR，XPS，拉曼，TGA和DSC研究证实了其形成。然后将银纳米颗粒固定在Go-PnVP上，并在40和95℃的存在和不存在葡萄糖中，在存在和不存在葡萄糖的情况下通过吡咯。 FT-IR，UV-Vis，XRD，SEM和TGA研究支持掺入银（Ag）纳米颗粒。与Go-PNVP上固定的Ag纳米颗粒是小，球形和狭窄的分布（均匀，单分散）与GO相比。将这些纳米复合材料探索为催化剂，用于将p-硝基苯酚还原成对氨基苯酚，也是朝向克（+）氏葡萄球菌和克（ - ）大肠杆菌细菌的抗菌剂。 AG纳米粒子固定化的GO-PNVP显示出有效的催化活性和优异的可重用性以及优异的抗菌活性。因此，PNVP的接枝增强了去的催化和抗菌性质。

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  • 来源
    《RSC Advances》 |2015年第100期|共11页
  • 作者

    Singh Shikha; Gundampati Ravi Kumar; Mitra Kheyanath; Ramesh K.; Jagannadham Medicherla V.; Misra Nira; Ray Biswajit;

  • 作者单位

    Banaras Hindu Univ Fac Sci Dept Chem Varanasi 221005 Uttar Pradesh India;

    Banaras Hindu Univ Inst Med Sci Mol Biol Unit Varanasi 221005 Uttar Pradesh India;

    Banaras Hindu Univ Fac Sci Dept Chem Varanasi 221005 Uttar Pradesh India;

    Banaras Hindu Univ Fac Sci Dept Chem Varanasi 221005 Uttar Pradesh India;

    Banaras Hindu Univ Inst Med Sci Mol Biol Unit Varanasi 221005 Uttar Pradesh India;

    Banaras Hindu Univ Indian Inst Technol Sch Biomed Engn Varanasi 221005 Uttar Pradesh India;

    Banaras Hindu Univ Fac Sci Dept Chem Varanasi 221005 Uttar Pradesh India;

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  • 正文语种 eng
  • 中图分类 化学;
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