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Ambient Preparation of Benzoxazine-based Phenolic Resins Enables Long-term Sustainable Photosynthesis of Hydrogen Peroxide |
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| Authors: | Xinyao Wang Dr Xiaowei Yang Chen Zhao Yutong Pi Prof Xiaobo Li Prof Zhongfan Jia Prof Si Zhou Prof Jijun Zhao Prof Limin Wu Prof Jian Liu |
| Institution: | 1. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 China
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049 P. R. China;2. Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology, Ministry of Education, Dalian, 116024 China;3. College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, 321004 China;4. Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University, Sturt Road, Bedford Park, South Australia, 5042 Australia;5. Inner Mongolia University, Hohhot, Inner Mongolia, 010021 P. R. China;6. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 China |
| Abstract: | Rational design of polymer structures at the molecular level promotes the iteration of high-performance photocatalyst for sustainable photocatalytic hydrogen peroxide (H2O2) production from oxygen and water, which also lays the basis for revealing the reaction mechanism. Here we report a benzoxazine-based m-aminophenol-formaldehyde resin (APFac) polymerized at ambient conditions, exhibiting superior H2O2 yield and long-term stability to most polymeric photocatalysts. Benzoxazine structure was identified as the crucial photocatalytic active segment in APFac. Favorable adsorption of oxygen/intermediates on benzoxazine structure and commendable product selectivity accelerated the reaction kinetically in stepwise single-electron oxygen reduction reaction. The proposed benzoxazine-based phenolic resin provides the possibility of production in batches and industrial application, and sheds light on the de novo design and analysis of metal-free polymeric photocatalysts. |
| Keywords: | Benzoxazine Structure H2O2 Photosynthesis Heterogeneous Photocatalysis Oxygen Intermediate Adsorption Phenolic Resin |