Surface modification of ZnO with Ag improves its photocatalytic efficiency and photostability

Effect of calcination temperature on structural properties and photocatalytic activity of Mn-C-codoped TiO2

“…The PL emission spectra has been widely used to disclose the efficiency of charge carrier trapping, immigration, and transfer, and to understand the fate of electrons and holes in semiconductor since PL emission results from the recombination of free carriers [34][35][36][37] . Fig.…”

Effect of the interface on UV–vis–IR photodetection performance of PbS/ZnO nanocomposite photocatalysts

“…The obtained PbS/ZnO nanocomposites is denoted as PbS/ZnO-B. [33,35]. Raman peaks at 135, 181, 271, and 451 cm −1 are attributed to the combination of longitudinal and transverse acoustic modes of PbS [36], a longitudinal optical phonon mode, a two-phonon process, and a 2 longitudinal optical phonon mode, respectively [37].…”

“…For example, Choi et al reported that tailoring the PbS/metal interface by the simple oxidation of PbS QDs greatly improved photovoltaic performance [28]. On the other hand, ZnO as wide bandgap semiconductor (3.37 eV) has been extensively investigated for many applications such as UV photodetection, photocatalytic purification [29][30][31][32][33][34][35]. The conduction band edge and valence band edge of ZnO are lower than the corresponding that of narrow band PbS.…”

Zinc oxide-palladium material an efficient solar-light driven photocatalyst for degradation of congo red

“…The metal support with ZnO to increase the photoexcited electrons-hole charge separation, transfer process and decreases the electron-hole recombination rate. Moreover, metal increases the adsorption of pollutant on catalyst surfaces afterwards improved its photocatalytic oxidation and reduction process [10,11]. Once the ZnO-Pd nanocomposite material was prepared, it was characterized and its photocatalyic activity was investigated by degradation of Congo red dye under solar light.…”