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首页> 外文期刊>Cellulose >Preparation of cellulose-based fluorescent materials using Zinc sulphide quantum dot-decorated graphene by a one-step hydrothermal method
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Preparation of cellulose-based fluorescent materials using Zinc sulphide quantum dot-decorated graphene by a one-step hydrothermal method

机译：一步法水热法用硫化锌量子点修饰石墨烯制备纤维素基荧光材料

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摘要

Cellulose-based fluorescent materials using Zinc sulphide (ZnS) quantum dot-decorated graphene were prepared by a one-step hydrothermal method. X-ray photoelectron spectroscopy analysis identified the chemical states of Zn, S, C, O, and N in the composite paper. Transmission electron microscopy showed that the graphite oxide was reduced to graphene sheets, and ZnS nanoparticles (< 10 nm) were deposited on the surface of these sheets. Scanning electron microscopy indicated that graphene sheets were attached to the surface of paper fibers, and the paper structure and morphology of the fibers were not observably damaged during the hydrothermal reaction. The cellulose-based composite had strong ultraviolet absorption in the range of 200-340 nm, and its main absorption peak was at approximately 296 nm. The band edge emission of photoluminescence spectrum of the composite occurred at 466 nm with an excitation wavelength of 320 nm. The laser scanning confocal microscope image of the composite exhibited an intense blue fluorescence under UV light at 405 nm.
机译：通过一步水热法制备了使用硫化锌（ZnS）量子点修饰石墨烯的纤维素基荧光材料。 X射线光电子能谱分析确定了复合纸中Zn，S，C，O和N的化学状态。透射电子显微镜显示，氧化石墨被还原成石墨烯片，并且ZnS纳米颗粒（＜10nm）沉积在这些片的表面上。扫描电子显微镜表明，石墨烯片附着在纸纤维的表面上，并且在水热反应期间未观察到纤维的纸结构和形态被破坏。所述纤维素基复合材料在200-340nm的范围内具有强的紫外线吸收，并且其主吸收峰在约296nm处。该复合物的光致发光光谱的带边缘发射发生在466nm，激发波长为320nm。该复合物的激光扫描共聚焦显微镜图像在405 nm的紫外线下显示出强烈的蓝色荧光。

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