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Table 1 Experiment design of RSM for 3 operating independent variables affecting TiO2 NPs size

From: Biosynthesis, characterization and optimization of TiO2 nanoparticles by novel marine halophilic Halomonas sp. RAM2: application of natural dye-sensitized solar cells

Run

Reaction conditions

Response

 

A

B

C

TiO2 Size (nm)

Conc. (M)

pH

Time (min)

Observed

Predicted

1

0.028

7

90

16.73

17.17

2

0.028

7

90

18.31

17.17

3

0.014

8.2

72

19.48

19.49

4

0.028

7

90

17.88

17.17

5

0.028

7

90

16.87

17.17

6

0.014

8.2

108

17.64

17.77

7

0.028

9

90

18.39

18.28

8

0.028

5

90

15.45

15.57

9

0.005

7

90

18.66

18.60

10

0.041

5.8

108

16.75

16.74

11

0.028

7

120

17.00

17.13

12

0.028

7

60

19.00

18.87

13

0.041

8.2

72

19.22

19.42

14

0.041

8.2

108

18.11

17.96

15

0.041

5.8

72

17.22

17.08

16

0.028

7

90

17.00

17.17

17

0.050

7

90

18.36

18.42

18

0.014

5.8

72

17.35

17.49

19

0.028

7

90

16.20

17.17

20

0.014

5.8

108

17.07

16.88