Benzimidazole-functionalized Zr-UiO-66 nanocrystals for luminescent sensing of Fe 3+ in water
Benzimidazole-functionalized Zr-UiO-66 nanocrystals for luminescent sensing of Fe 3+ in water
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DOI：
10.1016/j.jssc.2016.10.019
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发表时间：
2017
影响因子：
3.3
通讯作者：
Yingying Dong;Hanzhuo Zhang;F. Lei;Mei-Keat Liang;Xuefeng Qian;Peilian Shen;Hui Xu;Zhihui Chen-Zhihui-C
中科院分区：
文献类型：
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作者：
Yingying Dong;Hanzhuo Zhang;F. Lei;Mei-Keat Liang;Xuefeng Qian;Peilian Shen;Hui Xu;Zhihui Chen-Zhihui-C
锆基MOF结构UIO-66具有前所未有的高热稳定性和化学稳定性，使其成为各种应用中使用最多的MOF之一。然而，UIO-66较差的光致发光性能限制了其在发光传感方面的应用。本论文采用微波合成法成功制备了一种新型的苯并咪唑功能化UIO-66纳米晶(UIO-66-BI)。UIO-66-BI呈八面体纳米晶形态，直径小于200 nm，在水和普通有机溶剂中分散良好。与纯UIO-66相比，UIO-66-BI在可见光区域表现出更强的光吸收，并有效地改善了荧光发射。研究了UIO-66-BI纳米晶对不同离子的传感性能，结果表明，UIO-66-BI对水中Fe3+离子具有良好的选择性发光传感性能。
Zr-based MOF structure UiO-66 exhibits unprecedented high thermal and chemical stability, making it to be one of the most used MOFs in various applications. Yet, the poor photoluminescent (PL) properties of UiO-66 limit its applications in luminescent sensing. Herein, a new benzimidazole-functionalized UiO-66 nanocrystal (UiO-66-BI) was successfully fabricated via microwave synthesis. UiO-66-BI displayed octahedral nanocrystal morphology with a diameter smaller than 200 nm and could disperse well in water and common organic solvents. UiO-66-BI demonstrated extended optical absorption in the visible-light region and efficiently improved PL emission compared with UiO-66 pristine. The sensing properties of UiO-66-BI nanocrystals towards different ions were studied, and the results demonstrated that UiO-66-BI showed excellent selective luminescent sensing of Fe3+ions in water.