二维sp2碳共价有机框架及高效光催化制氢(英文) |
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作者姓名: | 刘辉 王丹博 于泽芳 陈雅静 李旭兵 张瑞玲 陈雄 吴骊珠 丁乃秀 王元成 赵英杰 |
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作者单位: | 1. College of Polymer Science and Engineering, Qingdao University of Science and Technology;2. Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences;3. Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University;4. Key Laboratory of Molecule Synthesis and Function Discovery(Fujian Province University), State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University |
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基金项目: | financially supported by the National Natural Science Foundation of China (31202117 and 51972185);;the Natural Science Foundation of Shandong Province (ZR2020ZD38); |
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摘 要: | 本文设计合成了两种具有不同连接方式(亚胺键和sp2-C-CN键)的三嗪基共价有机框架(COFs)材料.连接单元的微小变化导致可见光驱动制氢性能的巨大差异.具有sp2碳连接方式的全π共轭二维COFs在450 nm波长处表现出13.48%的外量子效率,优于已报道的COFs光催化剂.而亚胺键的二维COFs几乎没有光活性.借助光电化学研究和量子化学计算进一步研究了二维COFs的催化机理,为太阳能转化高性能有机光催化剂的制备提供了新的见解.
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