scholarly journals Direct evidence of charge separation in a metal–organic framework: efficient and selective photocatalytic oxidative coupling of amines via charge and energy transfer

2018 ◽  
Vol 9 (12) ◽  
pp. 3152-3158 ◽  
Author(s):  
Caiyun Xu ◽  
Hang Liu ◽  
Dandan Li ◽  
Ji-Hu Su ◽  
Hai-Long Jiang

For the first time, the photoexcited charge separation in a metal–organic framework has been evidenced with clear ESR signals, based on efficient and selective photocatalytic oxidative coupling of amines.

2019 ◽  
Author(s):  
Timothée Stassin ◽  
Ivo Stassen ◽  
Joao Marreiros ◽  
Alexander John Cruz ◽  
Rhea Verbeke ◽  
...  

A simple solvent- and catalyst-free method is presented for the synthesis of the mesoporous metal-organic framework (MOF) MAF-6 (RHO-Zn(eIm)2) based on the reaction of ZnO with 2-ethylimidazole vapor at temperatures ≤ 100 °C. By translating this method to a chemical vapor deposition (CVD) protocol, mesoporous crystalline films could be deposited for the first time entirely from the vapor phase. A combination of PALS and Kr physisorption measurements confirmed the porosity of these MOF-CVD films and the size of the MAF-6 supercages (diam. ~2 nm), in close agreement with powder data and calculations. MAF-6 powders and films were further characterized by XRD, TGA, SEM, FTIR, PDF and EXAFS. The exceptional uptake capacity of the mesoporous MAF-6 in comparison to the microporous ZIF-8 is demonstrated by vapor-phase loading of a molecule larger than the ZIF-8 windows.


Nanoscale ◽  
2022 ◽  
Author(s):  
Bingbing Cui ◽  
Guo-Dong Fu

The fossil-fuel shortage and severe environmental issues have posed ever-increasing demands on clean and renewable energy sources, for which the exploration of electrocatalysts has been in a big challenge toward...


2022 ◽  
Author(s):  
Hikaru Sakamoto ◽  
Akitaka Ito ◽  
Masataka Ohtani

We demonstrate that the nanosize effect appears to affect the properties of dye molecules encapsulated in the pores of a metal–organic framework (dye@MOF). The emissive properties of the nanosized dye@MOF...


2019 ◽  
Vol 10 (18) ◽  
pp. 2263-2272 ◽  
Author(s):  
Huaizhi Liu ◽  
Hao Peng ◽  
Yumeng Xin ◽  
Jiuyang Zhang

We reported for the first time using metal–organic framework (MOF) nanoparticles as effective nanofillers to significantly enhance the mechanical performance of hydrogels. The MOF hydrogels have been developed for drug delivery materials with high loading capacity and much extended drug releasing profiles.


2019 ◽  
Vol 6 (7) ◽  
pp. 1433-1437 ◽  
Author(s):  
Ziming Wang ◽  
Xingtao Xu ◽  
Jeonghun Kim ◽  
Victor Malgras ◽  
Ran Mo ◽  
...  

Metal–organic framework/polypyrrole hybrids are synthesized and directly used in capacitive deionization for the first time.


2014 ◽  
Vol 136 (10) ◽  
pp. 3776-3779 ◽  
Author(s):  
Himanshu Aggarwal ◽  
Prashant M. Bhatt ◽  
Charl X. Bezuidenhout ◽  
Leonard J. Barbour

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