Figure 2.

XRD patterns and TEM images (inset) of as-synthesized MCM-41 nanomaterials synthesized from three subsequent cycles. (a) M-1, (b) M-2, and (c) M-3. Scale bar = 50 nm.

Ng et al. Nanoscale Research Letters 2013 8:120   doi:10.1186/1556-276X-8-120
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