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首页> 外文期刊>Journal of Applied Polymer Science >Structurally modified electrospun poly(methyl methacrylate) nanofibers as advanced host matrices for PbS quantum dots
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Structurally modified electrospun poly(methyl methacrylate) nanofibers as advanced host matrices for PbS quantum dots

机译：结构改性的电纺聚（甲基丙烯酸甲酯）纳米纤维作为PBS量子点的晚期宿主基质

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摘要

The present work deals with the studies of the host matrix nature of pure and structurally modified surface roughened and coaxial hollow electrospun poly(methyl methacrylate) (PMMA) nanofibers to lead sulphide (PbS) quantum dots. The various structural and molecular analyses conducted on these samples proved the advancements and structural modifications made in the properties of pure PMMA nanofibers by electrospinning and selective dissolution. The successful incorporation of the quantum dots to pure and structurally modified PMMA nanofibers and hence the host matrix nature of these nanofibers is proved by different spectral analyses of the samples. The coaxial hollow PMMA nanofibers are found to be the best host matrix among these PMMA nanofibers as proved by the optical studies of the samples. Photoluminescence analyses of the samples showed the influence of these quantum dots on the optical properties of PMMA nanofibers. It is observed here that, the quantum dots enhance the intensity of coaxial hollow PMMA nanofibers to about four times than its virgin form. The pure and structurally modified PMMA nanofibers incorporated with PbS quantum dots are proved to be efficient for the degradation of methylene blue dye where coaxial hollow PMMA nanofibers incorporated with PbS quantum dots is the best.
机译：本文研究了纯的和经过结构修饰的表面粗糙的同轴空心聚甲基丙烯酸甲酯（PMMA）纳米纤维到硫化铅（PbS）量子点的基质性质。对这些样品进行的各种结构和分子分析证明了通过静电纺丝和选择性溶解在纯PMMA纳米纤维的性能方面取得的进步和结构修改。通过对样品进行不同的光谱分析，证明了量子点成功地结合到纯PMMA纳米纤维和经过结构修饰的PMMA纳米纤维中，从而证明了这些纳米纤维的基质性质。对样品的光学研究表明，同轴中空PMMA纳米纤维是这些PMMA纳米纤维中最好的基质。样品的光致发光分析表明，这些量子点对PMMA纳米纤维的光学性能有影响。这里观察到，量子点将同轴中空PMMA纳米纤维的强度提高到其原始形式的四倍左右。结果表明，加入PbS量子点的纯PMMA纳米纤维和经过结构修饰的PMMA纳米纤维对亚甲基蓝染料的降解是有效的，其中加入PbS量子点的同轴中空PMMA纳米纤维的降解效果最好。

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