A comparative study on the photo-removal of a few selected priority organic pollutants in aqueous suspension using vanadium-doped-ZnO/MWCNT

Abstract

The highly efficient Vanadium doped ZnO nano-rod supported with MWCNT (V@ZnO/MWCNT) has been fabricated using a convenient sol-gel impregnation method. The techniques such as FTIR, XRD, UV-Vis DRS, TEM, and...

Fabrication of Direct Z-Scheme CoNiWO4/Ph-gC3N4 Heterocomposites: Enhanced Photodegradation of Bisphenol A and Anticancer Activity

“…44 From the figure, it is evident that Ph-gC 3 N 4 and CoNiWO 4 exhibit a strong PL signal, whereas the composites exhibit relatively low PL signals, and 20CoNiWO 4 / reactive oxygen species, thereby improving photocatalytic redox reactions. 45 4.4. Photostability.…”

“…The findings show that adding CoNiWO 4 to Ph-gC 3 N 4 improves charge carrier separation. It can be said that photoinduced charge carriers may migrate quickly and recombine at a reduced rate, providing enough time for e – and h + to produce reactive oxygen species, thereby improving photocatalytic redox reactions …”

La/Fe bimetallic MOF-derived p-LaFeO3/n-CdS heterojunction: efficient photocatalytic degradation of organic contaminants and adsorption isotherms

“…27,29 Unfortunately, these materials’ intrinsic shortcomings such as their high rate of photogenerated electron–hole pair recombination and lack of solar light absorption restrict their application in photocatalysis. 30 CdS experiences changes such as heterojunction formation and metal/non-metal deposition in order to improve the photocatalytic reaction and lower the rate of electron–hole pair recombination. 31 A few studies on the construction of heterojunctions have been reported in the literature like heterojunctions include p-MoS 2 /n-rGO 32 and p-LaFeO 3 /n-Fe 2 O 3 .…”

Vanadium promoted ZnO films: Effects on optical and photocatalytic properties

“…Studies regarding the effect of transition metal doping on the photoelectrochemical properties of metal oxide films have been widely available in literature, some of which indicate that vanadium (V) doping improves the UV sensibility and photoresponse of ZnO, TiO 2 , and α-Fe 2 O 3 metal oxides by increasing the rate of visible light absorption, leading to increased photocatalytic activity [38][39][40][41][42]. Photocatalytic degradation studies of organic dyes [43][44][45] and synthesis/characterization studies of vanadium doped ZnO nanostructures [46][47][48] have been reported, however there is a gap about a comparative study regarding the influence of various oxidation states of vanadium. Vanadium has oxidation states from +2 to +5 and its nanocomposites with ZnO exhibit excellent photocatalytic activity [49][50][51].…”