Microwave hydrothermally synthesized WO3/UiO-66 nanocomposites toward enhanced photocatalytic degradation of rhodamine B

IF 21.8 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Advanced Composites and Hybrid Materials Pub Date : 2021-10-19 DOI:10.1007/s42114-021-00346-6

Fuhao Zhang, Wei Cheng, Zhuanghua Yu, Shengsong Ge, Qian Shao, Duo Pan, Bin Liu, Xiaojing Wang, Zhanhu Guo

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引用次数: 46

Abstract

A novel nanocomposite (WO₃/UiO-66) was successfully synthesized by the microwave hydrothermal method. The influence of the W:Zr molar ratio on the WO₃/UiO-66 structure was explored in detail, and the photocatalytic activity of the nanocomposite for photodegradation of rhodamine B (RhB) was evaluated. The WO₃/UiO-66 with a W:Zr molar ratio of 1:5 (WO₃/UiO-66–5) exerted the most excellent photocatalytic performance, and the photocatalytic efficiency reached 96.6% after 100 min of simulated sunlight irradiation, thereby showing a higher photocatalytic performance than pure UiO-66 or pure WO₃. In addition, the stability and reusability of the nanocomposite were studied by cyclic experiments, and the degradation rate of WO₃/UiO-66–5 still reached 86.6% after 5 cycles. The mechanism underlying the photocatalytic degradation of WO₃/UiO-66 was finally studied by quenching tests, and the crucial factor in the RhB degradation was hole (h⁺), and the existence of the n–n heterojunction also promotes the degradation of RhB by nanocomposites. In this work, an effective method is provided for the preparation of photocatalysts that degrade organic dyes.

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微波水热合成WO3/UiO-66纳米复合材料增强光催化降解罗丹明B

采用微波水热法成功合成了一种新型的纳米复合材料（WO3/UiO-66）。详细探讨了W:Zr摩尔比对WO3/UiO-66结构的影响，并评价了该纳米复合材料对罗丹明B（RhB）光降解的光催化活性。W:Zr摩尔比为1:5的WO3/UiO-66（WO3/UiO-66–5）表现出最优异的光催化性能，在模拟太阳光照射100分钟后，光催化效率达到96.6%，从而显示出比纯UiO-66或纯WO3更高的光催化性能。此外，通过循环实验研究了纳米复合材料的稳定性和可重复使用性，5次循环后WO3/UiO-66–5的降解率仍达到86.6%。通过猝灭实验，最终研究了WO3/UiO-66光催化降解的机理，RhB降解的关键因素是空穴（h+），n–n异质结的存在也促进了纳米复合材料对RhB的降解。本工作为制备降解有机染料的光催化剂提供了一种有效的方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advanced Composites and Hybrid Materials Multiple-

CiteScore

26.00

自引率

21.40%

发文量

185

期刊介绍： Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field. The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest. Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials. Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.