Enhanced photocatalytic degradation of Rhodamine B employing transition metal (Fe, Cu, Co) doped ZnO/rGO nanostructures synthesized by electrospinning-hydrothermal technique

Enhanced photocatalytic efficiency of porous ZnO coral-like nanoplates for organic dye degradation

“…This underscores the substantial normalized PL intensity observed for the coral-like porous ZnO nanosheet sample, consistent with pure n-type semiconductor properties, distinguishing it from previous reports involving precious metal-decorated samples. 26 Additionally, the third emission band at around 568 nm, attributed to a blue band indicative of Zn vacancies, reveals their presence within the ZnO crystal structure. Similar to oxygen vacancies, zinc vacancies introduce defect levels in the bandgap, affecting the material's electronic structure and optical properties.…”

Synthesis and Characterization of a Photocatalytic Material from TiO2 Nanoparticles Supported on Zeolite Obtained from Ignimbrite Residue Used in Decolorization of Methyl Orange

“…This simple yet potent method has shown a high potential for reducing organic pollution by facilitating an absolute decrease in toxic substances [6]. Several photocatalyst materials have been described, such as ZnO, CuO, TiO 2 , WO 3 , Fe 2 O 3 , and CuO [7][8][9]; among them, titanium dioxide (TiO 2 ) stands out, especially due to its properties such as low cost, nontoxicity, and high stability in aqueous media and its safe handling [10,11]. However, the high aggregation tendency, low adsorption capacity, and difficult recovery of TiO 2 limit its application in water treatment [12,13]; therefore, many researchers have focused on the immobilization of TiO 2 on suitable support materials to alleviate the recovery efficiency of TiO 2 .…”

Synthesis of Fe-doped ZnO/biochar nanocomposites for acid orange 7 photodegradation and antibacterial activity under visible light region

“…The introduction of a dopant into the structure is one such method [22]. The doping of transition metal ions into the ZnO crystal lattice is a promising technique for enhancing photocatalytic activity by introducing new energy levels within the bandgap, primarily improving the electron-hole pair separation efficiency by forming electron traps [23]. Among the transition metals, iron (Fe) is preferred as a dopant because its d-orbitals easily overlap with the valence band of ZnO [24].…”