Novel composite photocatalysts MIL-100 (Fe) modified with carbon quantum dots (CQDs) were prepared via a simple one-step hydrothermal method. The photocatalytic performances were indagated through the gas phase NO removal experiment under visible-light illumination. Compared with the pure MIL-100 (Fe), the CQDs@MIL-100 (Fe) material showed excellent photocatalytic performance, with a maximum of 70% NO removal efficiency. The composite photocatalysts were systematically characterized with SEM, XRD, BET, DRS, PL, and FTIR. The results showed that CQDs were successfully coupled with the MIL-100 (Fe) via the C-O bond. The introduction of CQDs enhanced the utilization of sunlight and photoexcited-charge utilization efficiency, which in turn promoted the conversion of NO to NO${}_3^{-}$.

通过简单的一步水热法制备了用碳量子点 (CQDs) 改性的新型复合光催化剂 MIL-100 (Fe)。通过可见光照射下的气相NO去除实验来验证光催化性能。与纯 MIL-100 (Fe) 相比，CQDs@MIL-100 (Fe) 材料表现出优异的光催化性能，最高可达 70% 的 NO 去除效率。用SEM、XRD、BET、DRS、PL和FTIR系统地表征了复合光催化剂。结果表明，CQDs 通过 CO 键成功地与 MIL-100 (Fe) 偶联。CQDs的引入增强了阳光的利用和光激发电荷的利用效率，进而促进了NO向NO的转化${}_3^{-}$.