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Amyloid fibrils as rapid and efficient nanobiosorbents for removal of dye pollutants

机译：淀粉样蛋白原纤维作为快速高效的纳米脂质，用于去除染料污染物

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摘要

This study demonstrates the promising role of amyloid fibrils as rapid and efficient nano-biosorbents for removal of dye pollutants in water. Amyloid fibrils of hen lysozyme, which are highly ordered protein nanofibers, can be prepared easily in one step under green and mild aqueous conditions. Results of zeta-potential and fluorescence measurements indicate that lysozyme nanofibers bear positive/negative charges and hydrophobic regions along their fibrillar structures. These special structural properties enable lysozyme nanofibers to adsorb the anionic dyes Reactive Black 5 and Acid Blue 29 and the cationic dye Victoria Blue B rapidly and efficiently, presumably through multiple intermolecular interactions (e.g. electrostatic attraction and hydrophobic interaction); the adsorption equilibrium for these dyes can be reached within 15 min, and a dye removal efficiency of over 60% can be achieved in industrial wastewater. Lysozyme nanofibers are also compatible with magnetite nanoparticles to form magnetic nanofibers, which can provide rapid and convenient dye removals through the application of an external magnetic field and maintain high dye removal efficiency (92-99%) after undergoing 20 cycles of desorption.
机译：本研究证明了淀粉样蛋白原纤维作为快速高效的纳米生物吸收性的有希望的作用，用于去除水中染料污染物。母胶质原纤维的母鸡溶菌酶是高度有序的蛋白质纳米纤维，可以在绿色和温和的水性条件下的一步中容易地制备。 Zeta潜力和荧光测量结果表明，溶菌酶纳米纤维沿着其纤维状结构承受阳性/负电荷和疏水区域。这些特殊的结构性能使溶菌酶纳米纤维能够快速有效地通过多分子间相互作用（例如静电吸引力和疏水相互作用的溶菌酶反应性黑5和酸蓝29和阳离子染料维多利亚蓝B和阳离子染料维多利亚蓝B。这些染料的吸附平衡可以在15分钟内达到，并且在工业废水中可以实现超过60％的染料去除效率。溶菌酶纳米纤维也与磁铁矿纳米颗粒相容以形成磁性纳米纤维，可以通过施加外部磁场来提供快速和方便的染料，并在进行20个解吸循环后保持高染料去除效率（92-99％）。

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  • 来源
    《RSC Advances》 |2015年第109期|共9页
  • 作者

    Wai-Hong Leung; Wai-Hung Lo; Pak-Ho Chan;

  • 作者单位

    State Key Laboratory of Chirosciences Department of Applied Biology and Chemical Technology The Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong P. R. China.;

    State Key Laboratory of Chirosciences Department of Applied Biology and Chemical Technology The Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong P. R. China.;

    State Key Laboratory of Chirosciences Department of Applied Biology and Chemical Technology The Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong P. R. China.;

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  • 正文语种 eng
  • 中图分类 化学;
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