Son Ye Rim, Kwak Minseok, Lee Songyi, Kim Hyun Sung
Department of Chemistry, Pukyong National University, Busan 48513, Korea.
Department of Industry 4.0 Convergence Bionics Engineering, Pukyong National University, Yongso-ro, Nam-gu, Busan 48513, Korea.
Nanomaterials (Basel). 2020 Dec 12;10(12):2498. doi: 10.3390/nano10122498.
Encapsulating CdS quantum dots (QDs) into zeolitic imidazole framework-8 (ZIF-8) can offer several advantages for photocatalysis. Various types of capping agents have been used to encapsulate QDs into ZIF-8 nanopores. An effective method for encapsulating CdS QDs into ZIF-8 is to use 2-mercaptoimidazole as the capping agent. This is because 2-mercaptoimidazole is similar to the imidazolate ligands of ZIFs and can used for capping active species with simultaneous encapsulation during the crystal growth of ZIF-8. Compared to other widely used capping agents such as polyvinylpyrrolidone (PVP), using 2-mercaptoimidazole for encapsulating CdS QDs into ZIF-8 revealed photocatalytic effects along with the molecular sieving effect when using differently sized molecular redox mediators such as methyl viologen (MV) and diquat (DQ).
将硫化镉量子点（QDs）封装到沸石咪唑框架-8（ZIF-8）中可为光催化带来诸多优势。已使用各种类型的封端剂将量子点封装到ZIF-8纳米孔中。将硫化镉量子点封装到ZIF-8中的一种有效方法是使用2-巯基咪唑作为封端剂。这是因为2-巯基咪唑与ZIFs的咪唑配体相似，并且可用于在ZIF-8晶体生长过程中同时封装来封端活性物种。与其他广泛使用的封端剂如聚乙烯吡咯烷酮（PVP）相比，使用2-巯基咪唑将硫化镉量子点封装到ZIF-8中，当使用不同尺寸的分子氧化还原介质如甲基紫精（MV）和敌草快（DQ）时，显示出光催化效果以及分子筛分效果。
