Figure 2: Physical characterization of the representative MOAs. | Nature Communications

Figure 2: Physical characterization of the representative MOAs.

From: A synthetic route to ultralight hierarchically micro/mesoporous Al(III)-carboxylate metal-organic aerogels

Figure 2

(a) SEM of AlBTC-1:1-0.40 (bar width=500 nm). (b) TEM of AlBTC-3:2-0.075 (scale bar, 100 nm; the insert shows digital photograph of gel before subcritical extraction). (c) PXRD patterns of AlBDC-3:2-0.15 wet gel obtained in EtOH at 353 K (I), AlBDC-3:2-0.15 aerogel (II), intermediate obtained from AlBDC-3:2-0.15 reaction systems in EtOH at 333 K (III) and 323 K (IV), and simulation from the single-crystal data of MIL-53(Al) in its LP form (V). (d) 27Al MAS NMR spectral ex situ monitoring of AlBDC-3:2-0.15 system at different gelation times in comparison with pure Al(NO3)3·9H2O, MIL-53(Al) solid in LP form and their mixtures.

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