Facile synthesis of alginate-based calcium tungstate composite: A thermally stable blue emitting phosphor

Cheng Wen; Zhang Qing; Xue Yun; Wang Yanwei; Zhou Xiaodong; Li Zichao; Li Qun

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Facile synthesis of alginate-based calcium tungstate composite: A thermally stable blue emitting phosphor

机译：基于藻酸钙钨酸钙复合材料的容易合成：热稳定的蓝色发光磷光体

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The alginate-based calcium tungstate composite was fabricated by a facile and eco-friendly one-step crosslinking process combining with the freeze-drying method. Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscope, X-ray diffraction, thermogravimetric analysis, UV-vis diffuse reflectance spectrum and photoluminescence (PL) were employed to characterize the structures, morphologies, thermal stabilities, and optical properties of the synthesized composite materials. The obtained results demonstrate that the alginate-based calcium tungstate composite presented a special porous network architecture with tetragonal scheelite-type calcium tungstate microspheres attached. A possible synthesis mechanism was proposed based on the experimental data. Moreover, the PL data confirmed the broadband emission of the composite with its maximum at 438 nm that located in the blue emitting region. This study provides the alginate-based calcium tungstate composite with unique morphology and good thermal stability as well as lays a foundation for its application in the field of PL.

机译：采用一步交联和冷冻干燥相结合的方法制备了海藻酸钠基钨酸钙复合材料。采用傅里叶变换红外光谱、X射线光电子能谱、扫描电子显微镜、X射线衍射、热重分析、紫外-可见漫反射光谱和光致发光（PL）对合成的复合材料的结构、形貌、热稳定性和光学性能进行了表征。结果表明，海藻酸钠基钨酸钙复合材料呈现出一种特殊的多孔网络结构，并附着了四方白钨矿型钨酸钙微球。根据实验数据提出了一种可能的合成机理。此外，PL数据证实了该复合材料的宽带发射，其最大值为438 nm，位于蓝色发射区。本研究提供了具有独特形貌和良好热稳定性的海藻酸钙基钨酸钙复合材料，为其在PLA领域的应用奠定了基础。

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来源
《Journal of Applied Polymer Science》 |2021年第26期|共12页
作者
Cheng Wen; Zhang Qing; Xue Yun; Wang Yanwei; Zhou Xiaodong; Li Zichao; Li Qun;
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作者单位

Qingdao Univ Coll Chem &

Chem Engn Qingdao 266071 Peoples R China;

Qingdao Univ Coll Chem &

Chem Engn Qingdao 266071 Peoples R China;

Qingdao Univ Coll Chem &

Chem Engn Qingdao 266071 Peoples R China;

Qingdao Univ Coll Chem &

Chem Engn Qingdao 266071 Peoples R China;

Qingdao Univ Coll Chem &

Chem Engn Qingdao 266071 Peoples R China;

Qingdao Univ Inst Biomed Engn Coll Life Sci Qingdao Peoples R China;

Qingdao Univ Coll Chem &

Chem Engn Qingdao 266071 Peoples R China;

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原文格式 PDF
正文语种 eng
中图分类高分子化合物工业（高聚物工业）;
关键词
composites; morphology; optical properties; thermal properties;

机译：复合材料;形态;光学性质;热性质;

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Facile synthesis of alginate-based calcium tungstate composite: A thermally stable blue emitting phosphor

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