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A 3d/0d cobalt-embedded nitrogen-doped porous carbon/supramolecular porphyrin magnetic-separation photocatalyst with highly efficient pollutant degradation and water oxidation performance

引用

Journal of Materials Science & Technology 2022年第29期124卷 53-64页

作者： Lufang Ning Jing Xu Yang Lou Chengsi Pan Zhouping Wang Yongfa Zhu State Key Laboratory of Food Science and Technology Jiangnan UniversityWuxi 214122China School of Food Science and Technology Jiangnan UniversityWuxi 214122China International Joint Laboratory on Food Safety Jiangnan UniversityWuxi 214122China Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province Jiangnan UniversityWuxi 214122China Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxi 214122China National Engineering Research Center for Functional Food Jiangnan UniversityWuxi 214122China Key Laboratory of Meat Processing of Sichuan Chengdu UniversityChengdu 610106China department of Chemistry Tsinghua UniversityBeijing 100084China

A 3d/0d cobalt-embedded nitrogen-doped porous carbon nanocubes(Co-N-C)/supramolecular tetra(4-carboxylphenyl)porphyrin nanocrystals(SA-TCPP)photocatalyst was successfully self-assembled viaπ–πinteraction,hydrogen bonding,and chemical ***-N-C/SA-TCPP heterostructure exhibited satisfactory visible photocatalytic oxidation performance on pollutant degradation and water *** degradation rates of Co-N-C/ST(30%)composite towards 2,4-dichlorophenol,ofloxacin,and ethylene were10.9,7.2,and 2.1 times faster than SA-TCPP,*** oxygen evolution efficiency was 1.9 times higher than *** remarkably improved oxidation activities of Co-N-C/SA-TCPP were mainly ascribed to the following reasons:(1)Co-N-C could enhance the light absorption ability of SA-TCPP to produce more photoinduced carriers.(2)The well-developed porosity of Co-N-C could optimize the dispersibility of SA-TCPP to provide more reactive sites and charge separation channels.(3)Theπ–πinteraction between SA-TCPP and Co-N-C was beneficial to interlayer charge mobility,while the embedded cobalt nanoparticles(Co NPs)and N-doped carbon matrix could serve as electron traps to accelerate interfacial electron ***,the ferromagnetic Co NPs endowed Co-N-C/SA-TCPP with magnetic-separation function to promote recyclability in practical application.

关键词： Visible-light photocatalysis Supramolecular porphyrin ZIF-67 derived co-catalyst 3d/0d heterostructure Magnetic-separation

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