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首页> 外文期刊>RSC Advances >Foaming-assisted electrospinning of large-pore mesoporous ZnO nanofibers with tailored structures and enhanced photocatalytic activity
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Foaming-assisted electrospinning of large-pore mesoporous ZnO nanofibers with tailored structures and enhanced photocatalytic activity

机译：具有定制结构和增强光催化活性的大孔介孔ZnO纳米纤维的起泡辅助电纺

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摘要

1D large-pore mesoporous ZnO materials have attracted tremendous attention because of their outstanding properties and promising applications in a wide range of fields. In the present work, we report the fabrication of large-pore mesoporous ZnO nanofibers via an improved electrospinning strategy, namely, the foaming-assisted electrospinning technique, combined with subsequent calcination treatment. The as-fabricated large-pore mesoporous nanofibers were systematically characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Brunauer-Emmett-Teller (BET) specific surface area (S-BET). The obtained products possess well-designed 1D mesoporous nanostructure with high purity and homogeneous large pore sizes. It is found that the content of the foaming agent within the solutions plays a crucial role in the formation of large-pore mesoporous ZnO nanofibers, enabling the growth of the fibers in a controlled manner. The resultant large-pore mesoporous nanofibers exhibit excellent photocatalytic activity and significant stability for hydrogen production compared to conventional solid nanofibers. The present work suggests a facile preparation of the large-pore mesoporous ZnO nanofibers, which may open new doors for their potential applications in photocatalysts.
机译：一维大孔介孔ZnO材料因其出色的性能和在广泛领域中的应用前景而备受关注。在目前的工作中，我们报告通过改进的电纺策略，即发泡辅助电纺技术，结合随后的煅烧处理，来制造大孔介孔ZnO纳米纤维。通过X射线衍射（XRD），扫描电子显微镜（SEM），透射电子显微镜（TEM）和Brunauer-Emmett-Teller（BET）比表面积（S-BET）对制成的大孔介孔纳米纤维进行了系统表征）。获得的产品具有设计良好的一维介孔纳米结构，具有高纯度和均一的大孔径。发现溶液中发泡剂的含量在大孔介孔ZnO纳米纤维的形成中起关键作用，从而使纤维以受控方式生长。与常规的固体纳米纤维相比，所得的大孔介孔纳米纤维表现出优异的光催化活性和显着的制氢稳定性。目前的工作表明大孔介孔ZnO纳米纤维的轻松制备，这可能为其在光催化剂中的潜在应用打开新的大门。

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