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首页> 外文期刊>RSC Advances >Microbial synthesis of hollow porous Prussian blue@yeast microspheres and their synergistic enhancement of organic pollutant removal performance
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Microbial synthesis of hollow porous Prussian blue@yeast microspheres and their synergistic enhancement of organic pollutant removal performance

机译：空心多孔普鲁士蓝@酵母微球的微生物合成及其协同增强有机污染物去除性能

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摘要

In this work, Prussian blue nanoparticles (PB NPs) were in situ grown on S. cerevisiae cells via one-step hydrothermal synthesis and the as-prepared Prussian blue@yeast (PB@yeast) hybrids exhibited synergistic adsorption and Fenton catalytic activities. FE-SEM, XRD and BET analysis of the prepared samples confirmed the successful formation of hollow porous structured PB@yeast microspheres, while FT-IR and XPS spectra indicated the fine structures were occupied by both functional adsorptive and catalytic sites. The experimental results of adsorption coupled Fenton reaction of PB@yeast hybrid microspheres revealed that the functional groups on the cell wall and the active iron sites in PB framework were fully utilized due to the triple synergistic effects of adsorption-Fenton catalysis-adsorption sites regeneration, thus endowing synergistically enhanced performance in removal of the selected cationic methylene blue (MB), anionic Methyl Orange (MO) and fluorescent brightener 71 (CXT) in aqueous solution. The high Fenton catalytic efficiency was related to the improvement of adsorption, in which the enrichment of contaminant molecules on the outer and inner surface of the hollow porous microspheres could lower mass transfer resistance and shorten charge transport pathways, thereby introducing more efficient Fenton catalytic activity than PB NPs.
机译：在这项工作中，普鲁士蓝纳米颗粒（PB NPS）原位通过一步水热合成和制备的普鲁士蓝@酵母（PB @酵母）杂种具有协同吸附和Fenton催化活性的酿酒群细胞。 Fe-SEM，XRD和BET分析的制备样品证实了中空多孔结构PB @酵母微球的成功形成，而FT-IR和XPS光谱表明过函数吸附和催化位点占用细结构。 PB酵母杂交微球的吸附耦合芬顿反应的实验结果显示，由于吸附 - 芬顿催化吸附点再生的三重协同效应，充分利用了细胞壁上的官能团和PB框架中的活性铁位点，因此，在除去所选阳离子亚甲基蓝（MB），阴离子甲基橙（MO）和荧光增白剂71（CXT）中，赋予协同增强性能在水溶液中。高芬顿催化效率与吸附的改善有关，其中中空多孔微球的外表面和内表面上的富集污染物分子可以降低传质抗性和缩短电荷输送途径，从而引入更有效的FENTON催化活性。 PB NPS。

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  • 来源
    《RSC Advances》 |2019年第28期|共13页
  • 作者

    Chen Si; Bai Bo; Xu Xiaohui; Hu Na; Wang Honglun; Suo Yourui;

  • 作者单位

    Changan Univ Minist Educ Key Lab Subsurface Hydrol &

    Ecol Effects Arid Reg 126 Yanta Rd Xian 710054 Shaanxi Peoples R China;

    Changan Univ Coll Environm Sci &

    Engn Xian 710054 Shaanxi Peoples R China;

    Changan Univ Minist Educ Key Lab Subsurface Hydrol &

    Ecol Effects Arid Reg 126 Yanta Rd Xian 710054 Shaanxi Peoples R China;

    Chinese Acad Sci Northwest Inst Plateau Biol Key Lab Tibetan Med Res Xining 810008 Qinghai Peoples R China;

    Chinese Acad Sci Northwest Inst Plateau Biol Key Lab Tibetan Med Res Xining 810008 Qinghai Peoples R China;

    Chinese Acad Sci Northwest Inst Plateau Biol Key Lab Tibetan Med Res Xining 810008 Qinghai Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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