Photocatalytic destruction of Congo red dye in wastewater using a novel Ag2WO4/Bi2S3 nanocomposite decorated g-C3N4 nanosheet as ternary S-scheme heterojunction: Improving the charge transfer efficiency

Integrated Ozonation Ni-NiO/Carbon/g-C3N4 Nanocomposite-Mediated Catalytic Decomposition of Organic Contaminants in Wastewater under Visible Light

“…On the other hand, in the ozonation process, the percentages of CR and ARS degradations initially were also high, and while increasing the initial concentrations, CR and ARS subsequently molecules increased in the solution, but the competition of • OH radicals and the shortage of • OH production from O 3 depletion was influenced the CR and ARS degradation capacity. The same behaviour was also reported in a previous study [51].…”

“…Moreover, higher • OH radicals are produced in the basic medium due to the − OH ions. Therefore, a better decomposition of the dye molecules was observed in the basic medium [ 51 ].…”

Recent Development of Photocatalytic Application Towards Wastewater Treatment

“…In response to the visible light, the photoexcited electrons from the CB of the semiconductor having lower Fermi level travel to the VB of the semiconductor having a higher Fermi level within the internal electron field, which leads to the effective implementation of photogenerated electrons and holes over CB and VB of both the semiconductors respectively [17,28]. For instance, Jabbar et al [29] developed a novel dual S scheme g-C3N4/Ag2WO4/Bi2S3 heterojunction nanostructure to completely decompose Congo red dye under visible light irradiation. In such a scheme, the stacked electrons in the CB of g-C3N4 migrated to the VB of Ag2WO4 and Bi2S3 semiconductors and recombined with their stacked holes.…”

Enhancing the adsorption–photocatalytic efficiency of BiOBr for Congo red degradation by tuning the surface charge and bandgap via an Y3+–I− co-doping strategy

“…24,25 Congo red (CR), a water-soluble anionic dye, has many adverse impacts such as respiratory infections, allergic dermatitis and carcinogenicity. 26 Thus, sufficient removal of CR is of vital importance. Besides using polymer-based adsorbents, 24 the CR degradation behavior of the afore-listed photocatalysts, including oxides, 10,24 sulfides and g-C 3 N 4 , 26 has been investigated.…”

“…26 Thus, sufficient removal of CR is of vital importance. Besides using polymer-based adsorbents, 24 the CR degradation behavior of the afore-listed photocatalysts, including oxides, 10,24 sulfides and g-C 3 N 4 , 26 has been investigated.…”