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. 2020 Aug 21;25(17):3814. doi: 10.3390/molecules25173814

Figure 1.

Figure 1

Transmission electron microscopy (TEM) images for calcined Mobil Crystalline Materials or Mobil Composition of Matter (MCM)-41 (a), MCM-48 (b), and Santa Barbara amorphous (SBA)-15 (c). Reprinted from an open access source [40].