Mohamed Taha's research while affiliated with Cairo University and other places

... The phase identification and the line profile analysis were performed using the High score plus software. The obtained patterns for g-C 3 N 4 , Ag/AgBr and their nanocomposites are shown in Fig. 2. For g-C 3 N 4 the peak at 27.36° is the characteristic peak for (002) orthorhombic plane assigned to the stacking of conjugated aromatic planes in g-C 3 N 4 42 meanwhile, the peak at 13.7° attributed to (100) hexagonal plane of g-C 3 N 4 , which represented an in-plane structural packing motif with a period of 0.675 nm (JCPDS card No. 87-1526) 43,44 . All the diffraction peaks for the pure Ag/AgBr and SG1, SG2, and SG3 samples were matched to the polycrystalline AgBr phase with a Cubic Face centered structure of space group Fm-3m (ICDD card no.01-079-0149). ...

... Core-shell nanomaterials with magnetic Fe 3 O 4 nanoparticles as the core have been successfully synthesized previously, such as Fe 3 O 4 @TiO 2 [11], Fe 3 O 4 @Ag [12], and Fe 3 O 4 @ZnO [13] using hydrothermal techniques; Fe 3 O 4 @SiO 2 was carried out using the Stöber method [14]. The core-shell nanoparticles showed superparamagnetic behavior at room temperature, and their toxicity was evaluated using hepatocellular carcinoma liver tumor cells. ...

... Given that the CB position of ZnO (− 4.05 eV) is higher than the work function of rGO (− 4.42 eV), the photogenerated electrons may continue to transfer to rGO. This microscopic electron transfer process effectively suppresses electron-hole recombination, promoting the generation of additional photogenerated electrons and holes to generate active oxidative free radicals (such as •OH and •OH 2 − ) for the degradation of organic compounds [26,27]. Furthermore, on the basis of the XRD, Raman, and PL experimental results presented above, the stress interaction between ZnO and graphene can be concluded to lead to an increase in intrinsic defect oxygen vacancies in ZnO. ...