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Table 3 Nanoparticles mean diameters and standard deviations at different days from their preparation by means of the homogenization method

From: Experimental stability analysis of different water-based nanofluids

  Day from preparation Diameter peak 1 (nm) S.D. peak 1 Diameter peak 2 (nm) S.D. peak 2
TiO2/PEG (wt.%)
0.01/0.02 1 198 0.8   
  5 166 3   
  15 268 6   
  16 159 1   
0.1/0.2 1 161 2   
  4 130 1   
  16 81 0.7   
1/2 1 132 0.7   
  5 123 1   
  15 88 0.5   
  16 86 0.4   
SWCNH/SDS (wt.%)
0.01/0.01 1 109 0.6   
  5 131 2   
  15 106 1.4   
0.01/0.03 1 129 7   
  5 105 0.3   
  15 131 0.6 4358 427
0.1/0.1 1 101 0.4   
  5 106 0.9   
  15 115 0.6   
1/1 1 183 5   
  5 293 105 4312 158
  15 261 18 3678 1503
  1. All the values are related to the static measurements and at most two peaks are identified