Figure 2.

Nanoparticles size distribution for water containing 0.1 wt.% TiO2 dispersed by means of the sonication method. At (thick line) day 1, (dashed line) day 4 and (dashed-dotted line) day 15.

Fedele et al. Nanoscale Research Letters 2011 6:300   doi:10.1186/1556-276X-6-300
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