Enhanced visible-light catalytic degradation of methylene blue by improving adsorption of porous zirconium-based porphyrin MOFs sensitized TiO2 photocatalyst

被引：12
作者：
Zhu, Lijun [1 ]
Zhu, Xinxin [1 ]
Zhang, Chao [1 ]
Huo, Tian [1 ]
Hou, Xinlan [1 ]
Guo, Dandan [1 ]
Zhang, Huiming [1 ]
Xia, Daohong [1 ]
机构：
[1] China Univ Petr East China, Coll Chem Engn, State Key Lab Heavy Oil Proc, Qingdao 266580, Peoples R China
来源：
JOURNAL OF MATERIALS RESEARCH | 2021年 / 36卷 / 14期
基金：
中国国家自然科学基金;
关键词：
Zirconium-based porphyrin MOFs; TiO2; Visible light; Photocatalyst; Dye degradation; METAL-ORGANIC FRAMEWORKS; ACTIVE-SITE; NANOPARTICLES; NANOCOMPOSITES; PERFORMANCE; EFFICIENCY; TITANIA; MODEL; ZR;
D O I：
10.1557/s43578-021-00303-5
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The zirconium-based porphyrin MOFs sensitized TiO2 (PCN224-TiO2) was synthesized in situ by self-assembly of porphyrin, ZrCl4 with nano TiO2. The composite catalyst was determined by detailed structural and photoelectrochemical characterization. The UV-Vis absorption and fluorescence spectrum confirm that PCN224 and TiO2 are coupled. The PCN224-TiO2 had significant absorption of visible light and the PCN224-TiO2 had the largest photo-generated current, which proved the porphyrin MOFs material has good internal conductivity and has a close combination with TiO2. Compared with carboxyphenyl porphyrin sensitized TiO2 (HTCPP-TiO2), mixture of TCPP and TiO2 (TCPP/TiO2) and PCN224, the PCN224-TiO2 showed better removal performance of methylene blue under visible light. Under low-power xenon lamp irradiation, the removal rate of PCN224-TiO2 (1:3) on methylene blue reached 93.2% in 4 h. And PCN224-TiO2 had stable cycling catalytic performance. The PCN224-TiO2 promoted the degradation process by strengthening the adsorption of organic pollutants, thus improving the removal performance. Graphic abstract
引用
收藏
页码：2961 / 2972
页数：12
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