Ou Man, Tu Wenguang, Yin Shengming, Xing Weinan, Wu Shuyang, Wang Haojing, Wan Shipeng, Zhong Qin, Xu Rong
School of Chemical & Biomedical Engineering, Nanyang Technology University, 62 Nanyang Drive, Singapore, 637459, Singapore.
School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu, 210094, P. R. China.
Angew Chem Int Ed Engl. 2018 Oct 8;57(41):13570-13574. doi: 10.1002/anie.201808930. Epub 2018 Sep 17.
Halide perovskite quantum dots (QDs) have great potential in photocatalytic applications if their low charge transportation efficiency and chemical instability can be overcome. To circumvent these obstacles, we anchored CsPbBr QDs (CPB) on NH -rich porous g-C N nanosheets (PCN) to construct the composite photocatalysts via N-Br chemical bonding. The 20 CPB-PCN (20 wt % of QDs) photocatalyst exhibits good stability and an outstanding yield of 149 μmol h g in acetonitrile/water for photocatalytic reduction of CO to CO under visible light irradiation, which is around 15 times higher than that of CsPbBr QDs. This study opens up new possibilities of using halide perovskite QDs for photocatalytic application.
如果能够克服卤化物钙钛矿量子点（QDs）电荷传输效率低和化学稳定性差的问题，它们在光催化应用中具有巨大潜力。为了克服这些障碍，我们通过N-Br化学键将CsPbBr量子点（CPB）锚定在富含NH的多孔g-CN纳米片（PCN）上，构建复合光催化剂。20% CPB-PCN（量子点质量分数为20 wt %）光催化剂在可见光照射下，于乙腈/水中光催化将CO还原为CO时，表现出良好的稳定性，产率高达149 μmol h g，约为CsPbBr量子点的15倍。这项研究为卤化物钙钛矿量子点用于光催化应用开辟了新的可能性。
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