期刊
CHEMOSPHERE
卷 243, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2019.125334
关键词
Metalloporphyrin; Porous organic polymer; Photo-Fenton catalyst; Methylene blue degradation; Wastewater treatment
资金
- National Natural Science Foundation of China [21977064, 21472117]
- major research and development plan in Shandong Province
- Scientific and Technological Projects of Shandong Province [2019GHY112028]
- Open Project of State Key Laboratory of Infrared Physics [M201701]
Developing novel heterogeneous photo-Fenton catalysts with high efficiency and stability, driven by visible-light rather ultraviolet light at neutral pH has been a major challenge for degradation of organic pollutants. In this work, we successfully synthesized a metalloporphyrin-based porous organic polymer (FePPOP-1) by the Sonogashira cross-coupling reaction. UV-vis absorption spectra showed FePPOP-1 exhibits a significant coverage of the natural solar irradiance spectrum. As a result, the prepared FePPOP-1 has a significantly enhanced photocatalytic activity for the visible-light-driven degradation of methylene blue. By using only 4 mg of FePPOP-1 as a catalyst, it was found that 50 mL of organic wastewater containing 70 ppm MB could be totally degraded in 80 min even at neutral pH. The effects of the initial MB, H2O2 concentrations, pH value and common ions on MB degradation were studied in detail. Both the catalytic mechanism of FePPOP-1 and the degradation route of MB were also proposed. (C) 2019 Elsevier Ltd. All rights reserved.
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