Figure 4.

XRD patterns of the products. Products synthesized at various HCl concentrations: (a) 0, (b) 0.45, (c) 0.68, (d) 1.12, and (e) 1.35 M.

Zhou et al. Nanoscale Research Letters 2012 7:217   doi:10.1186/1556-276X-7-217
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