期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 382, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2019.121098
关键词
3D/2D heterojunction; In2O3 nanocube; ZnIn2S4 nanosheet; Photocatalysis; 2,4-dichlorophenol
资金
- Research and Development Project of Science and Technology for Shaanxi Province [2017JM2014]
- Fundamental Research Funds for the Central Universities [310829153507]
- National Training Projects of the University StudentsInnovation and Entrepreneurship program [201910710124, 201910710125, 201910710244]
We have rationally designed and fabricated of face-to-face 3D/2D In2O3 nanocube/ZnIn2S4 nanosheet heterojunction by growing ZnIn2S4 nanosheets on the surfaces of In2O3 cubes as photocatalysts for 2,4-di-chlorophenol (2,4-DCP) degradation under visible light. Herein, the unique 3D/2D In2O3 nanocube/ZnIn2S4 nanosheet hierarchical structure not only exposes far more abundant heterojunction interface active sites compared to 3D/0D In2O3 nanocube/ZnIn2S4 nanoparticle, but also produces numbers of compact high-speed nanochannels in the junctions, which significantly promotes the separation and migration of photogenerated carriers. Profiting by structural and compositional advantages, the optimized 3D/2D ZnIn2S4-In2O3 photo-catalyst shows excellent photocatalytic activity and stability in the degradation of 2,4-DCP, which is 1.85, 2.60, 3.02 and 3.54-fold higher than that of 3D/0D ZnIn2S4-In2O3, ZnIn2S4 nanosheet, ZnIn2S4 nanoparticle and In2O3, respectively. Meanwhile, the main active species (center dot O-2(-), center dot OH and h(+)) produced in the photodegradation process were determined and the intermediates and degradation mechanism were studied in detail. Besides, the application on the removal of 2,4-DCP in natural water and actual wastewaters by 3D/2D ZnIn2S4-In2O3 also have been studied. This work provides a new strategy for efficiently optimize the advantages of binary nano-architectures to effectively degrade phenolic pollutants in the environment.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据