二维共价有机框架材料的可控合成及其光催化应用研究进展

通过模拟自然界光合作用, 将太阳能转化为方便存储的化学能是缓解未来能源短缺和环境污染问题的理想途径之一. 二维共价有机框架材料(2D COFs)是近年来发展起来的一类新型有机半导体材料, 具有结晶度高、结构精确以及化学组分灵活可调等优势, 在光催化领域展现出巨大应用潜力, 受到了研究者们的广泛关注. 对2D COFs的可控制备以及电子结构调控方法进行了系统总结, 并重点介绍了它们在光催化水分解、CO₂还原以及H₂O₂合成领域的最近研究进展, 讨论了材料结构和催化性能之间的关系, 最后对2D COFs在光催化应用领域存在的机遇和挑战进行了展望.     

Femtosecond-laser-induced backward transfer of fluorinated ethylene propylene for fabrication of “lotus effect” surfaces

“Lotus effect” glass surfaces with fluorinated ethylene propylene were successfully fabricated by using a femtosecond laser-induced backward transfer(LIBT) method. By space-selectively modifying both the surface morphology and surface chemistry in a single step, LIBT provides a convenient and flexible route to fabricate superhydrophobic surfaces with ultralow adhesion. A systematic mechanism responsible for the anisotropic wetting behaviors and adhesion modulation was proposed with a combination...