Hu Jundie, Chen Dongyun, Li Najun, Xu Qingfeng, Li Hua, He Jinghui, Lu Jianmei
College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, China.
Small. 2018 May;14(19):e1800416. doi: 10.1002/smll.201800416. Epub 2018 Apr 10.
3D materials are considered promising for photocatalytic applications in air purification because of their large surface areas, controllability, and recyclability. Here, a series of aerogels consisting of graphitic-carbon nitride (g-C N ) modified with a perylene imide (PI) and graphene oxide (GO) are prepared for nitric oxide (NO) removal under visible-light irradiation. All of the photocatalysts exhibit excellent activity in NO removal because of the strong light absorption and good planarity of PI-g-C N coupled with the favorable charge transport properties of GO, which slow the recombination of electron-hole pairs. The aerogel containing thiophene displays the most efficient NO removal of the aerogel series, with a removal ratio of up to 66%. Density functional theory calculations are conducted to explain this result and recycling experiments are carried out to verify the stability and recyclability of these photocatalysts.
由于具有大表面积、可控性和可回收性，3D材料被认为在空气净化的光催化应用中具有前景。在此，制备了一系列由苝酰亚胺（PI）和氧化石墨烯（GO）改性的石墨相氮化碳（g-C₃N₄）组成的气凝胶，用于在可见光照射下去除一氧化氮（NO）。所有光催化剂在NO去除方面均表现出优异的活性，这归因于PI-g-C₃N₄的强吸光性和良好平面性，以及GO良好的电荷传输特性，后者减缓了电子-空穴对的复合。含噻吩的气凝胶在该气凝胶系列中表现出最有效的NO去除效果，去除率高达66%。进行了密度泛函理论计算以解释该结果，并开展了循环实验以验证这些光催化剂的稳定性和可回收性。
