期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 250, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.seppur.2020.117142
关键词
Photocatalyst; Ag3PO4; [Zn4O(BDC)(3)] MOF-5; Heterojunction; Organic ligand
资金
- National Natural Science Foundation of China [51772017]
The objective of the present study was to fabricate [Zn4O(BDC)(3)] (BDC = benzene-1,4-dicarboxylate) metal-organic framework 5 (MOF-5), Ag3PO4 decorated hybrids with a facile in situ precipitation method. All of the prepared MOF-5/Ag3PO4 hybrids exhibited significantly higher photocatalytic activity than pure Ag3PO4 and MOF-5. As suggested from the experimental results, the optimal MOF-5/Ag3PO4 hybrids at a 7% mass ratio of MOF-5 (MAP-7) exhibited the maximal catalytic activity with a 98.5% removal efficiency of RhB as irradiated by visible light for 40 min. In contrast, under the identical experimental conditions, the degradation rate of RhB by pure Ag3PO4 was only 63%. For the transformation of photoinduced holes accelerated by the organic ligand in the specific-conjugated structure [Zn4O(BDC)(3)] MOF-5, as well as the formation of the heterojunction structure between different semiconductor materials of Ag3PO4 and MOF-5, the produced material had enhanced performance. Moreover, trapping experimental results verified that the generated superoxide radicals (center dot O-2(-)) and photo-generated hole (h(+)) were critical to in the photodegrading process. Furthermore, a possible degradation mechanism with a heterostructure was developed.
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