Figure 1: Transformation of CuBTC to MIL-100.
From: Transformation of metal-organic frameworks for molecular sieving membranes
(a) SEM image of as-synthesized octahedron CuBTC crystal. Scale bar, 10 μm. (b) Transformation procedure in metal centre and second building unit of CuBTC and MIL-100. The Cu and Fe coordination polyhedra are represented in blue and green, respectively, whereas the BTC links are depicted by sticks. (c) XRD patterns of CuBTC/MIL-100 with different transformation time. (d) CuBTC structure viewed at different facet. (e) Peak intensity ratios of {200}/{222} and {220}/{222} with the transformation time increasing. (f) SEM images of CuBTC/MIL-100 with different transformation time. The octahedron CuBTC crystal (bottom, 1 h) transformed into nanoparticle MIL-100 crystal (top,12 h). Scale bar, 200 nm (left); 20 μm (right).
