61409-76-5Relevant academic research and scientific papers
Encapsulating Perovskite Quantum Dots in Iron-Based Metal–Organic Frameworks (MOFs) for Efficient Photocatalytic CO2 Reduction
Wu, Li-Yuan,Mu, Yan-Fei,Guo, Xiao-Xuan,Zhang, Wen,Zhang, Zhi-Ming,Zhang, Min,Lu, Tong-Bu
, p. 9491 - 9495 (2019)
Improving the stability of lead halide perovskite quantum dots (QDs) in a system containing water is the key for their practical application in artificial photosynthesis. Herein, we encapsulate low-cost CH3NH3PbI3 (MAPbI3) perovskite QDs in the pores of earth-abundant Fe-porphyrin based metal organic framework (MOF) PCN-221(Fex) by a sequential deposition route, to construct a series of composite photocatalysts of MAPbI3?PCN-221(Fex) (x=0–1). Protected by the MOF the composite photocatalysts exhibit much improved stability in reaction systems containing water. The close contact of QDs to the Fe catalytic site in the MOF, allows the photogenerated electrons in the QDs to transfer rapidly the Fe catalytic sites to enhance the photocatalytic activity for CO2 reduction. Using water as an electron source, MAPbI3?PCN-221(Fe0.2) exhibits a record-high total yield of 1559 μmol g?1 for photocatalytic CO2 reduction to CO (34 %) and CH4 (66 %), 38 times higher than that of PCN-221(Fe0.2) in the absence of perovskite QDs.
Confinement of Fe-Al-PMOF catalytic sites favours the formation of pyrazoline from ethyl diazoacetate with an unusual sharp increase of selectivity upon recycling
Abeykoon, Brian,Devic, Thomas,Grenèche, Jean-Marc,Fateeva, Alexandra,Sorokin, Alexander B.
supporting information, p. 10308 - 10311 (2018/09/21)
The catalytic properties of a chemically stable iron porphyrin MOF were evaluated in a reaction with ethyl diazoacetate. In contrast to its homogeneous counterpart, an Fe-porphyrin-MOF features a different reaction pathway leading to the formation of pyrazoline due to the confinement of catalytic sites within the MOF network. Unexpectedly, a sharp increase of the selectivity from 35% (run 1) to 86% (run 5) occurs upon catalyst recycling.
