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首页> 外文期刊>Journal of Applied Polymer Science >Electrospun dendritic ZnO nanofibers and its photocatalysis application
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Electrospun dendritic ZnO nanofibers and its photocatalysis application

机译：电纺树枝状ZnO纳米纤维及其光催化应用

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A simple and efficient procedure has been developed to fabricate ZnO nanofibers with dendritic structure via electrospinning and subsequent calcination. The spinning solution is prepared by mixing polyvinylpyrrolidone (PVP) and zinc acetate into methanol. From SEM images, it can be observed that the ZnO product has a tendency of dendritic structure. The diameter of the dendritic branch is approximate to 137 nm. The structure and physicochemical property of the prepared nanofibers are elucidated by TGA, SEM, XRD, FTIR, and PL, respectively. The photoluminescene measurement of the ZnO samples exhibit a broad visible emission band concentrate on around 430-580 nm. Meanwhile, the intensity is related to the content of surface oxygen vacancies, which probably influence photocatalytic activity of ZnO samples. Whereafter, the photocatalytical activity of the ZnO nanofibers is evaluated by quantifying the degradation of methyl blue. The result indicates that ZnO nanofibers annealed at 650 degrees C show an excellent photocatalytic activity. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41627.
机译：已经开发了一种简单而有效的程序，以通过电纺丝和随后的煅烧来制造具有树枝状结构的ZnO纳米纤维。通过将聚乙烯吡咯烷酮（PVP）和乙酸锌混合到甲醇中来制备纺丝溶液。从SEM图像可以看出，ZnO产物具有树枝状结构的趋势。树状分支的直径约为137nm。分别通过TGA，SEM，XRD，FTIR和PL阐明了制备的纳米纤维的结构和理化性质。 ZnO样品的光致发光测量结果显示，可见光发射带集中在430-580 nm左右。同时，强度与表面氧空位的含量有关，这可能影响ZnO样品的光催化活性。此后，通过量化甲基蓝的降解来评估ZnO纳米纤维的光催化活性。结果表明，在650℃退火的ZnO纳米纤维表现出优异的光催化活性。 （c）2014 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，41627。

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