Figure 5.

Nanoparticles mean diameter. Diameter in relation to the time elapsed from the day of preparation, for water containing (a) 0.01 wt.% TiO2 + 0.02 wt.% PEG: (filled square) static, (open square) shaken; (b) 0.1 wt.% TiO2 + 0.2 wt.% PEG: (filled triangle) static, (empty triangle) shaken; (c) 1 wt.% TiO2 + 2 wt.% PEG: (filled circle) static, (open circle) shaken.

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