Liu Meijie, Xing Zipeng, Zhao Huanan, Song Sijia, Wang Yichao, Li Zhenzi, Zhou Wei
Department of Environmental Science, School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China.
Department of Environmental Science, School of Chemistry and Materials Science, Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China.
J Hazard Mater. 2022 Sep 5;437:129436. doi: 10.1016/j.jhazmat.2022.129436. Epub 2022 Jun 21.
The fabrication of an efficient photoFenton system without the addition of HO is still a challenge and is cost-effective and favorable for practical applications. In this work, a core@shell Z-scheme heterojunction nanoreactor was successfully fabricated, in which hierarchical two-dimensional (2D) ZnInS nanosheets are coated on defective iron-based metal-organic frameworks (MOFs) (NH-MIL-88B(Fe)), realizing efficient in-situ evolution of HO and constructing an optimal heterogeneous Fenton platform. The degradation rates of defective NH-MIL-88B(Fe)@ZnInS (0.4 g L) for bisphenol A and ofloxacin under visible light irradiation within 180 min reached 99.4% and 98.5%, respectively, and the photocatalytic hydrogen production efficiency was approximately 502 μmol h g. The excellent photoFenton performance was attributed to the introduction of ligand defects into the MOF, which can adjust the band structure to enhance the light absorption capacity, and the in-situ generation of HO accelerating the Fe/Fe conversion. In addition, the formation of the core@shell nanoreactor Z-scheme heterojunction structure promoted spatial charge separation. This strategy offers new ideas for constructing efficient photocatalysis and photoFenton systems.
在不添加羟基自由基（HO）的情况下制备高效的光芬顿体系仍然是一项挑战，且该体系具有成本效益，有利于实际应用。在这项工作中，成功制备了一种核壳型Z型异质结纳米反应器，其中分级二维（2D）ZnInS纳米片包覆在有缺陷的铁基金属有机框架（MOF）（NH-MIL-88B(Fe)）上，实现了羟基自由基的高效原位生成，并构建了一个优化的非均相芬顿平台。在可见光照射下，180分钟内，有缺陷的NH-MIL-88B(Fe)@ZnInS（0.4 g L）对双酚A和氧氟沙星的降解率分别达到99.4%和98.5%，光催化产氢效率约为502 μmol h g。优异的光芬顿性能归因于在MOF中引入配体缺陷，这可以调整能带结构以增强光吸收能力，以及羟基自由基的原位生成加速了Fe/Fe的转化。此外，核壳纳米反应器Z型异质结结构的形成促进了空间电荷分离。该策略为构建高效光催化和光芬顿体系提供了新思路。
