Table 1: Parameters and their values corresponding to their levels to be studied in experiments.

Control factorLevel
1234

(A) Light sourceUVUV/LED
(B) Catalyst typeTiO20.005 wt.% Pt/TiO20.025 wt.% Pt/TiO20.2 wt.% Pt/TiO2
(C) Concentration (ppmv) 50 100 200 300
(D) Retention time (sec) 40 60 80 100
(E) Photointention (Mw cm−2) 1.55 1.62 2.1 2.4
(F) Relative humidity (%) 0 5 15 45