水性超支化聚酯/碳点@ TiO2纳米复合材料的光致发光，自清洁和光催化行为,ChemistrySelect

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水性超支化聚酯/碳点@ TiO2纳米复合材料的光致发光，自清洁和光催化行为
ChemistrySelect ( IF 1.9 ) Pub Date : 2018-06-11 , DOI: 10.1002/slct.201801160
Deepshikha Hazarika ₁ , Devabrata Saikia ₂ , Kuldeep Gupta ₂ , Manabendra Mandal ₂ , Niranjan Karak ₁

Affiliation

具有创新光学功能的功能材料由于其在高级人类文明中不可或缺的独特作用而引起了人们的广泛关注。因此，在目前的工作中，优良的激发波长相关的下转换和上转换光致发光碳点@TiO ₂首次报道了含有水性超支化聚酯纳米复合材料的产品。此外，纳米复合材料的热固性材料是透明的，并且在暴露于不同波长的紫外光时会发出不同的颜色。最有趣的是，纳米复合材料具有防反射和自清洁性能。通过在正常阳光下光催化降解农药，苯酚，双酚A和混合染料等各种有机污染物来实现自清洁行为。此外，热固性纳米复合材料可以用作在普通阳光下还原常见硝基芳族化合物的有效光催化剂。纳米复合材料还对金黄色葡萄球菌，枯草芽孢杆菌，肺炎克雷伯菌具有较强的抗菌活性。和铜绿假单胞菌细菌菌株。因此，所研究的纳米复合材料在不同的先进应用中具有广阔的前景。

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Photoluminescence, Self cleaning and Photocatalytic Behavior of Waterborne Hyperbranched Polyester/Carbon dot@TiO2 Nanocomposite

Functional materials with innovative optical features have attracted cumulative attention owing to their indispensable and inimitable roles in the advanced human‐civilization. Thus, in the present work, an excellent excitation wavelength dependent down‐ and up‐conversion photo‐luminescent carbon dot@TiO₂ containing waterborne hyperbranched polyester nanocomposite was reported for the first time. Further, the thermosets of the nanocomposite were transparent and emitted different colors on exposure of different wavelengths of UV light. Most interestingly, the nanocomposite showed anti‐reflecting as well as self‐cleaning properties. The self‐cleaning behavior was achieved through photocatalytic degradation of different organic contaminants namely pesticide, phenol, bis‐phenol A and mixed dyes under normal sunlight. Further, the thermosetting nanocomposite can be used as an efficient photocatalyst for reduction of common nitro‐aromatic compound under normal sunlight. The nanocomposites also exhibited strong antibacterial activity against Staphylococcus aureus, Bacillus subtilis, Klebsiella pneumoniae and Pseudomonas aeruginosa bacterial strains. Thus, the studied nanocomposite has remarkable prospect in different advanced applications.

更新日期：2018-06-11

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