Table 1 The input variables and experimental design.
Sample | Amount of titanium tetrachloride (ml) | Amount of isopropanol (ml) | Sonication time (h) |
---|---|---|---|
1 | 10 | 6 | 0.5 |
2 | 6 | 4 | 3 |
3 | 2 | 2 | 0.5 |
4 | 6 | 4 | 4 |
5 | 6 | 2 | 3 |
6 | 10 | 2 | 4 |
7 | 2 | 6 | 4 |
8 | 6 | 6 | 2 |
9 | 10 | 6 | 2 |
10 | 6 | 4 | 1 |
11 | 6 | 4 | 2 |
12 | 2 | 4 | 1 |
13 | 6 | 4 | 3 |
14 | 6 | 4 | 1 |
15 | 2 | 6 | 0.5 |
16 | 2 | 2 | 4 |
17 | 6 | 4 | 2 |
18 | 10 | 4 | 3 |
19 | 6 | 4 | 1 |
20 | 10 | 2 | 0.5 |