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首页> 外文期刊>RSC Advances >Synthesis of novel ZnO/ZnAl2O4 multi co-centric nanotubes and their long-term stability in photocatalytic application
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Synthesis of novel ZnO/ZnAl2O4 multi co-centric nanotubes and their long-term stability in photocatalytic application

机译：新型ZnO / ZNAL2O4多合型纳米管的合成及其在光催化施用中的长期稳定性

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摘要

Based on the Kirkendall effect, novel double, triple and quadruple co-centric nanotubes of ZnO/ZnAl2O4 have been successfully fabricated by combining the two techniques of electrospinning and atomic layer deposition. The as-prepared samples were annealed at 900 degrees C under air. Their morphological, structural and optical properties were studied by Scanning Electron Microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Energy-Dispersive X-ray spectroscopy (EDX), UV-visible spectrophotometry, Raman spectroscopy, photoluminescence (PL) and reflectance emission. The performances and long-term stability of these multi co-centric nanotubes for photocatalytic applications have been evaluated under the same conditions. As result, in the photodegradation of methyl orange (MO) under UV irradiation, the triple and quadruple co-centric nanotubes of ZnO/ZnAl2O4 exhibit a higher photodegradation efficiency (94% and 99%, respectively) in repeated and long-term applications compared to the pure ZnO which has very low long-term photocatalytic stability. Thus, the fact of coupling these two semiconductors ensured a high photocatalytic activity and long term stability.
机译：基于Kirkendall效果，通过组合静电纺丝和原子层沉积的两种技术成功地制造了ZnO / Znal2O4的新型双重，三级和四重式纳米管。在空气下在900℃下退火时样品。通过扫描电子显微镜（SEM），透射电子显微镜（TEM），X射线衍射（XRD），能量分散X射线光谱（EDX），UV可见分光光度法，拉曼光谱学研究了它们的形态学，结构和光学性质，光致发光（PL）和反射率发射。在相同的条件下评估了用于光催化应用的这些多合形纳米管的性能和长期稳定性。结果，在紫外线照射下的甲基橙（Mo）的光降解中，ZnO / Znal2O4的三倍和四重式纳米管在重复和长期应用中表现出更高的光降解效率（分别为94％和99％）对于具有非常低的长期光催化稳定性的纯ZnO。因此，偶联这两个半导体的事实确保了高光催化活性和长期稳定性。

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  • 来源
    《RSC Advances》 |2016年第105期|共8页
  • 作者

    Nasr Maryline; Viter Roman; Eid Cynthia; Warmont Fabienne; Habchi Roland; Miele Philippe; Bechelany Mikhael;

  • 作者单位

    Univ Montpellier ENSCM CNRS IEM UMR 5635 Pl Eugene Bataillon F-34095 Montpellier 5 France;

    Univ Latvia Inst Atom Phys &

    Spect 19 Raina Blvd LV-1586 Riga Latvia;

    Lebanese Univ Fac Sci &

    Res Platform Nanosci &

    Nanotechnol EC2M Campus Pierre Gemayel Fanar 90656 Lebanon;

    Univ Orleans CS 40059 CNRS ICMN 1b Rue Ferollerie F-45071 Orleans 2 France;

    Lebanese Univ Fac Sci &

    Res Platform Nanosci &

    Nanotechnol EC2M Campus Pierre Gemayel Fanar 90656 Lebanon;

    Univ Montpellier ENSCM CNRS IEM UMR 5635 Pl Eugene Bataillon F-34095 Montpellier 5 France;

    Univ Montpellier ENSCM CNRS IEM UMR 5635 Pl Eugene Bataillon F-34095 Montpellier 5 France;

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  • 正文语种 eng
  • 中图分类 化学;
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