Hello,
I need to impregnate the pores of a MOF with cu(acac)2, which I will then reduce under vacuum to copper nanoparticles. I plan on using the incipient wetness approach to do so. However, my MOF will not be in a powder form, but rather a self supported, fibrous mat form (Article Flexible Self-Supported Metal-Organic Frameworks Membranes w...
). According to my current research, the solid support catalyst (MOF) is typically stirred as the metal precursor solution in chloroform (or other solvent) is added to it, yielding a paste. However, I cannot stir my fibrous mat. Will simple immersion of my mat in the metal precursor solution be sufficient to impregnate the pores of the MOF with the precursor? Or would a drop-wise method of adding my solution work without stirring the MOF? Is there another way around this issue?Thank you for any answers!
Claire Boyer I think that simply soaking the fibrous mat in a solution of Cu(acac)2 in dichloromethane over night will be sufficient to impregnate the pores of the MOF with the copper precursor. As suggested earlier, use dichloromethane instead of chloroform to dissolve you Cu(acac)2.
P.S. When other RG members help you by answering your questions, it is polite and a good practice on RG to recommend their answers.... 😎
Claire Boyer I think that simply soaking the fibrous mat in a solution of Cu(acac)2 in dichloromethane over night will be sufficient to impregnate the pores of the MOF with the copper precursor. As suggested earlier, use dichloromethane instead of chloroform to dissolve you Cu(acac)2.
P.S. When other RG members help you by answering your questions, it is polite and a good practice on RG to recommend their answers.... 😎
I agree with the method suggested by Frank T. Edelmann . You can even have excess liquid/copper solution and, given enough impregnation time, the diffusion of copper acetate should fully impregnate the MOF. You can determine the actual metal loading by measuring the copper concentration of the liquid before and after impregnation and calculate the loading by material balance.
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