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Well-Designed TiO2@UiO-66-NH2 Nanocomposite with Superior Photocatalytic Activity for Tetracycline under Restricted Space
Energy & Fuels ( IF 5.3 ) Pub Date : 2020-09-14 , DOI: 10.1021/acs.energyfuels.0c02485
Jiafei Wu 1 , Xiuxuan Fang 1 , Yingzhi Zhu 1 , Na Ma 2 , Wei Dai 1
Affiliation  

A good design of efficient metal-organic framework material (MOF)-based photocatalysts with high intrinsic activity for tetracycline (TC) is highly desirable, but challenging, for water purification. Herein, we have constructed a novel TiO2@UiO-66-NH2 nanocomposite through a convenient one-step solvothermal technique. The TiO2@UiO-66-NH2 nanocomposite displayed outstanding adsorption and photodegradation performances toward TC in aqueous solution under restricted space and visible light illumination. The improved catalytic ability was mainly caused by the enhanced adsorption property and the successful transfer of photogenerated electrons to the conduction band of TiO2@UiO-66-NH2. Importantly, the photocatalyst efficiency was not tremendously decreased even after the fourth round of recycling, indicating its good stability and reusability. We believe that our study could be conducive to the future design and accomplishment of MOF surface interactions with organic pollutants, expanding the application of MOFs and photocatalysts for elimination of pollutants from wastewater.

中文翻译:

设计良好的TiO 2 @ UiO-66-NH 2纳米复合材料,在受限空间内对四环素具有优异的光催化活性

对水具有高固有活性但对四环素(TC)具有高固有活性的高效金属-有机骨架材料(MOF)基光催化剂的良好设计是非常理想的,但具有挑战性。在这里,我们已经通过方便的一步溶剂热技术构建了一种新型的TiO 2 @ UiO-66-NH 2纳米复合材料。TiO 2 @ UiO-66-NH 2纳米复合材料在有限的空间和可见光照射下,在水溶液中对TC表现出出色的吸附和光降解性能。催化能力的提高主要是由于增强的吸附性能以及光生电子成功转移到TiO 2 @ UiO-66-NH 2的导带上所致。。重要的是,即使在第四轮循环之后,光催化剂的效率也没有显着降低,表明其良好的稳定性和可重复使用性。我们相信我们的研究可能有助于MOF表面与有机污染物相互作用的未来设计和完成,扩大MOF和光催化剂在消除废水中污染物中的应用。
更新日期:2020-09-14
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