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Chapter 2 21
metal-precursors are employed to react with the organic linkers during the synthesis
(Figure 2.14). For instance, partial substitution of Cu 2+ by Ru 3+[134] and Zn 2+[133] in the PWs
of HKUST-1 were obtained by mixing the Cu-salt with the corresponding Ru-salt and Znsalt
directly during the synthesis, respectively. Orcajo et al. prepared Co-doped MOF-5 via
co-assembly of Co(NO3)2·6H2O, Zn(NO3)2·4H2O and H2bdc during the synthesis. This
obtained material exhibited enhanced adsorption capacities for H2, CO2, and CH4 at high
pressure in comparison with Co-free MOF-5.
Figure 2.13. Schematic representation of MTV-MOF-5 structures containing up to eight different
functionalities distributed in one phase. From H. Deng, C. J. Doonan, H. Furukawa, R. B. Ferreira, J.
Towne, C. B. Knobler, B. Wang and O. M. Yaghi, Science, 2010, 327, 846-850. [123] Reprinted with
permission from AAAS.