resumo
The construction of visible-light catalysts to degrade water pollutants is significant in environmental governance and solar energy conversion. In this work, a novel Zn-MOF with unsaturated coordination sites was constructed using 1-(Carboxymethyl)-pyrazole-4-carboxylic acid as the organic ligand. Its crystal structure was studied through single crystal X-ray diffraction. To enhance visible light catalytic performance, ZnFe-MOF/AgCl-x Zscheme heterojunction composites were constructed. The optimized ZnFe-MOF/AgCl-50 material exhibits excellent photocatalytic performance, which can degrade 90.33 % of levofloxacin in 21 min. The results indicate that Fe doping and the construction of the ZnFe-MOF/AgCl-x Z-scheme heterojunction not only broaden the responsive range to visible light, but also effectively promote the internal and interfacial charges transfer efficiency, leading to a superior catalytic performance. In addition, the Ag nanoparticles (NPs) generated during the photocatalytic process can serve as a bridge, achieving rapid charge transfer in Z-scheme heterojunction. This work can offer an innovative perspective for the development of novel and efficient MOF-based Z-scheme heterojunction photocatalysts for wastewater treatment applications.
palavras-chave
EFFICIENT; PHOTODEGRADATION; NANOPARTICLES; CONSTRUCTION; PERFORMANCE; NANOTUBE; SYSTEM
categoria
Chemistry; Materials Science; Physics
autores
Chen, J; Zhang, SY; Xu, YF; Cai, JN; Yang, Y; Wang, X; Chen, CY; Wei, JM; Fu, LS; Yang, TH
nossos autores
Lianshe Fu
Investigador Júnior
Tinghai Yang
Bolseiro de pós-DoutoramentoProjectos
Nano-argilas para remoção/captura de fosfatos (P) e sua reutilização como fertilizante (NATURAL)
agradecimentos
This work was supported by the National Natural Science Foundation of China (No. 51972173) , the Natural Science Foundation of the Jiangsu Higher Education Institutions of China (No. 23KJA430007) , the Changzhou Sci & Tech Program (CZ20240030) and the Postgraduate Research & Practice Innovation Program of Jiangsu Province (SJCX23_1648) . This work was also developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020 & UIDP/50011/2020, financed by National funds through the Foundation for Science and Technology/MCTES.