Table 2

Orthogonal arrays for statistical experiment and results
No. Experiment conditions Results
Ethanol (ml) Temperature (°C) TEOS (g) NH3· H2O (g) Time (h) Average particle size (nm)
1 100 30 0.3 (1) 0.6 (1) 4 (1) 50
2 100 30 0.3 (1) 1.2 (2) 6 (2) 120
3 100 30 0.3 (1) 1.8 (3) 8 (3) 140
4 100 30 0.6 (2) 0.6 (1) 6 (2) 100
5 100 30 0.6 (2) 1.2 (2) 8 (3) 240
6 100 30 0.6 (2) 1.8 (3) 4 (1) 170
7 100 30 0.9 (3) 0.6 (1) 8 (3) 130
8 100 30 0.9 (3) 1.2 (2) 4 (1) 160
9 100 30 0.9 (3) 1.8 (3) 6 (2) 280

Li et al.

Li et al. Nanoscale Research Letters 2014 9:172   doi:10.1186/1556-276X-9-172

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