A Sustainable Wood‐Based Iron Photocatalyst for Multiple Uses with Sunlight: Water Treatment and Radical Photopolymerization

A sustainable photocatalyst for use with multiple purpose comprising demethylated lignin (Fe3O4@D‐wood) was made by treatment of wood and iron oxide. Characterization followed by XRD, UV/Vis, photo‐current studies, and electrochemical measurements. This material became subject of photocatalytic expl...

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Published in:Angewandte Chemie International Edition 2023-07, Vol.62 (27), p.e202301242-n/a
Main Authors: Guo, Xiaolin, Zhao, Xinpeng, Luo, Xiongfei, Pang, Yulian, Tian, Bing, Liu, Shouxin, Li, Shujun, Li, Jian, Strehmel, Bernd, Chen, Zhijun
Format: Article
Language:English
Subjects:
Cumene
Cumene hydroperoxide
Electrochemistry
Hydrogen peroxide
Iron oxides
Oxidation
Photo-Fenton
Photocatalysis
Photocatalyst
Photocatalysts
Photochemicals
Photopolymerization
Radicals
Reactive oxygen species
Sunlight
Sustainability
Water Cleaning
Water reuse
Water treatment
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Summary:A sustainable photocatalyst for use with multiple purpose comprising demethylated lignin (Fe3O4@D‐wood) was made by treatment of wood and iron oxide. Characterization followed by XRD, UV/Vis, photo‐current studies, and electrochemical measurements. This material became subject of photocatalytic explorations for water treatment and material synthesis by radical photopolymerization. Exposure of Fe3O4@D‐wood with artificial sunlight showed an improved activity considering photochemical oxidation of organic pollutants in the presence of H2O2. The efficient generation of reactive radicals brought this system also to photopolymerization. Here, radicals based on reactive oxygen species (ROS) generated in the catalytic cycle can be seen as the dominating species to initiate radical polymerization. A mixture of UDMA and TPGDA showed good reactivity with cumene hydroperoxide (CHP). Photocatalyst used for water treatment facilitates reuse for photopolymerization. A photocatalyst was made from demethylated lignin as sustainable source and Fe3O4. It can be used in environmental sciences to clean wastewater and in material sciences as a radical photoinitiator, resulting in crosslinking of vinyl monomers by radical photopolymerization. Films obtained showed good water repelling and no tackiness even in an aerobic surrounding.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.202301242