Z-scheme metal organic framework@graphene oxide composite photocatalysts with enhanced photocatalytic degradation of tetracycline

IF 23.2 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES Advanced Composites and Hybrid Materials Pub Date : 2023-10-18 DOI:10.1007/s42114-023-00771-9

Jijun Tang, Guicheng Gao, Weiqi Luo, Qiuyang Dai, Yuchen Wang, Hala A. Elzilal, Hala M. Abo-Dief, Hassan Algadi, Jiaoxia Zhang

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Abstract

Domestic wastewater contains trace amounts of organic pollutants that are difficult to remove, such as antibiotics and dyes, so effective degradation technologies need to be found. Therefore, we report the fabrication of a novel Z-scheme MIL-125(Ti)/GO photocatalyst by an in-situ growing method. The photodegradation experiment showed that MIL-125(Ti)/GO degraded TC by 81.1% at 5% GO addition, which is 1.7 and 3.8 times higher than MIL-125(Ti) and GO, respectively. The degradation rate reached 0.0201 min⁻¹, 3.3 times and 8.1 times higher than MIL-125 (Ti) and GO, respectively. The study shows that GO and MIL-125(Ti), as electron donors and electron acceptors, respectively, form a Z-scheme heterojunction structure, which effectively improves the photocatalytic performance of MIL-125(Ti). MIL-125(Ti)/GO has excellent structural stability and reusable availability, and the main reactive radicals are ·O⁻₂ and h⁺. This study provides new insights into the design and fabrication of MIL-125 (Ti) derivatives as photodegrading organic pollutants.

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Z-scheme金属有机framework@graphene氧化物复合光催化剂增强四环素光催化降解

生活废水中含有微量的难以去除的有机污染物，如抗生素和染料，因此需要找到有效的降解技术。因此，我们报道了一种新型的Z-scheme MIL-125(Ti)/GO光催化剂的原位生长方法。光降解实验表明，当氧化石墨烯添加量为5%时，MIL-125(Ti)/GO对TC的降解率为81.1%，分别是MIL-125(Ti)和GO的1.7倍和3.8倍。降解速率为0.0201 min−1，是MIL-125 (Ti)和GO的3.3倍和8.1倍。研究表明，氧化石墨烯和MIL-125(Ti)分别作为电子给体和电子受体形成Z-scheme异质结结构，有效提高了MIL-125(Ti)的光催化性能。MIL-125(Ti)/GO具有良好的结构稳定性和可重复使用性，主要活性自由基为·O−2和h+。本研究为MIL-125 (Ti)衍生物作为光降解有机污染物的设计和制备提供了新的思路。

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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.