An efficient green protocol for photo-degradation of bromophenol blue dye

Microwave‐mediated One‐step Synthesis of CeVO4‐rGO Composites with Enhanced Photocatalytic Activity under Visible Light

“…The terms k app , C and C t are respectively the apparent first‐order rate constant in min −1 , dye concentration at zero time and at time t, expressed in mg/L. The −ln(C/C 0 ) vs time plots for both the dyes (Figure 9a and Figure 9b) are found to be linear indicating the degradation process followed pseudo first‐order kinetics as also observed in previous studies [29–35] . The derived rate constant (k) for BRB degradation with r‐GO, CeVO 4 , CeVO 4 ‐rGO‐1, CeVO 4 ‐rGO‐2 and CeVO 4 ‐rGO‐3 are 0.0052, 0.0077, 0.0123, 0.0213 and 0.0172 min −1 , respectively.…”

“…The À ln(C/C 0 ) vs time plots for both the dyes (Figure 9a and Figure 9b) are found to be linear indicating the degradation process followed pseudo firstorder kinetics as also observed in previous studies. [29][30][31][32][33][34][35] The derived rate constant (k) for BRB degradation with r-GO, CeVO 4 , CeVO 4 -rGO-1, CeVO 4 -rGO-2 and CeVO 4 -rGO-3 are 0.0052, 0.0077, 0.0123, 0.0213 and 0.0172 min À 1 , respectively. For EY degradation, the calculated rate constant values for r-GO, CeVO 4 , CeVO 4 -rGO-1, CeVO 4 -rGO-2 and CeVO 4 -rGO-3 are 0.0085, 0.0115, 0.0153, 0.0503 and 0.0275 min À 1 , respectively.…”

“…It is worth noting that the derived rate constants with different catalysts under study follow a similar trend as that of percentage of degradation and also the magnitude of these values are comparable with values reported for degradation of similar dyes using different catalytic systems. [29][30][31][32][33][34][35] The reusability of a catalyst is a necessary criterion for its possible practical applications. As such, the recyclability of the most active catalyst (CeVO 4 -rGO-2) was tested for four consecutive catalytic runs.…”

Synthesis and Characterization of Hematite-Based Nanocomposites as Promising Catalysts for Indigo Carmine Oxidation

“…From this point of view, many studies report data concerning the hematite-based (HB) catalyst’s abilities to eliminate organic and inorganic pollutants from water. Hence, the HB systems are used alone or with oxidants such as ozone, hydrogen peroxide, or persulfate for organic pollutants elimination in water decontamination and disinfection processes [ 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ]. Good results were obtained for eliminating various organic drugs such as ciprofloxacin [ 2 ], acetaminophen [ 3 ], diclofenac [ 4 ], and sulfasalazine [ 5 ] from wastewaters.…”

“…Good results were obtained for eliminating various organic drugs such as ciprofloxacin [ 2 ], acetaminophen [ 3 ], diclofenac [ 4 ], and sulfasalazine [ 5 ] from wastewaters. Moreover, a wide range of recalcitrant organic chemical pollutants such as benzene [ 6 ], toluene [ 7 ], phenols [ 6 , 8 ], rhodamine B [ 9 , 10 , 11 ], methylene blue [ 11 , 12 ], and bromophenol blue dyes [ 13 ] was also efficiently removed from wastewater using such catalysts.…”