Pore engineering via controlled decomposition of counter cations in an anion-based metal-organic framework (IMAGE)
Caption
Schematic illustration of the pore engineering strategy in Y-ebdc. In its initial state, dimethylamine (DMA) cations within the pores of Y-ebdc act as "gatekeepers," effectively blocking C3H8 while allowing C3H6 to pass, thus exhibiting high selectivity. However, the occupation of pore volume by DMA also limits its adsorption capacity. Following the partial removal of DMA via controlled thermal decomposition, the material's aperture size and pore volume are enlarged. This optimized pore structure maintains the original high selectivity while significantly accelerating C3H6 adsorption, ultimately leading to a remarkable enhancement in its dynamic uptake capacity.
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Nano Research, Zhengzhou University
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