Research Article

Surfactant-Free Microwave-Assisted Synthesis of Fe-Doped ZnO Nanostars as Photocatalyst for Degradation of Tropaeolin O in Water under Visible Light

Table 4

Range analysis result for the photocatalytic degradation of Tropaeolin O.

Value nameFactor
Catalyst loading Temperature Light distance Initial pH Irradiation time

108.6 159.7 312.1 186.1 143.7
199.0 211.1 201.5 204.5 179.3
234.6 193.4 147.4 215.6 225.2
248.4 226.4 129.6 184.4 242.4

27.2 39.9 78.0 46.5 35.9
49.8 52.8 50.4 51.1 44.8
58.7 48.4 36.9 53.9 56.3
62.1 56.6 32.4 46.1 60.6
Range value (max–min)35.0 16.7 45.6 7.8 24.7