Engineering S-scheme CuO/ZnO heterojunctions sonochemically for eradicating RhB dye from wastewater under solar radiation

Abstract

In this research, S-scheme heterojunctions composed of different concentrations of CuO and ZnO nanoparticles are fabricated for eradicating rhodamine B dye under solar radiation.

Photoactivation of peroxymonosulfate (PMS) over a CuO–ZnO p–n heterojunction for the selective C2 trimerization of indoles

“…8b). 51 Concurrently, the upward bending of the CB and VB of CuO and the downward bending of the CB and VB of ZnO favoured the elimination of useless electrons in the CB of ZnO and holes in the VB of CuO through their recombination. This, in turn, left free photogenerated electrons in the CB of RP and holes in the VB of OP (Fig.…”

Cationic and oxygen defect modulation for tailoring the bandgap and room temperature ferromagnetism of CuO via multiple d-block cations

“…The demand for metal oxide (MO) nanostructures is growing and has attracted noticeable research interest due to their alluring fundamental properties like structural, optical, and magnetic properties, which enable their multidisciplinary implementation in various sensors, supercapacitors, solar cells, catalysis, photocatalysis, spintronic devices, and so on. [1][2][3][4][5][6][7] Particularly, p-type cupric oxide (CuO) semiconducting nanocrystals (NCs) are receiving more attention as multifunctional materials because of their fundamental properties, i.e., narrow bandgap (1.2-1.8 eV) and room-temperature ferromagnetism (RTFM). 8 CuO also possesses environmental compatibility, non-toxicity, eco-friendliness, high theoretical capacity, and increasing susceptibility at low temperatures, which make it a potential contender for the energy domain, antibacterial applications, light-emitting diodes (LEDs), and degradation of organic pollutants.…”

“…The demand for metal oxide (MO) nanostructures is growing and has attracted noticeable research interest due to their alluring fundamental properties like structural, optical, and magnetic properties, which enable their multidisciplinary implementation in various sensors, supercapacitors, solar cells, catalysis, photocatalysis, spintronic devices, and so on. 1–7 Particularly, p-type cupric oxide (CuO) semiconducting nanocrystals (NCs) are receiving more attention as multifunctional materials because of their fundamental properties, i.e. , narrow bandgap (1.2–1.8 eV) and room-temperature ferromagnetism (RTFM).…”

Rational sonochemical engineering of Ag2CrO4/g-C3N4 heterojunction for eradicating RhB dye under full broad spectrum

“…Biological treatment, ion-exchange, adsorption and reverse osmosis processes are high cost, energy consumer and still embedded secondary generation of pollutants that require additional treatment [ [1] , [2] , [3] , [4] , [5] ]. The expelling of toxic organic pollutants from wastewater under solar radiations is required for environmental purposes [ [6] , [7] , [8] , [9] , [10] ]. Photocatalysis green technology required a low cost semiconductor and available light source [ [11] , [12] , [13] , [14] , [15] ].…”