Manda, Abdullah A.Elsayed, KhaledGaya, Umar İbrahimHaladu, Shamsuddeen A.Ercan, İsmailErcan, FilizAlheshibri, Muidh2023-07-262023-07-2620220030-39921879-2545https://doi.org/10.1016/j.optlastec.2022.108430https://hdl.handle.net/20.500.12684/12354The low conductivity and high combination rate of photogenerated electrons (e-) and photogenerated holes (h+) are the real challenges of photocatalysis. These problems could be mitigated by the synthesis of heterostructured nanocomposites (NCs). In this study, Bi@CNT-Fe2O3 nanocomposite was fabricated via pulsed laser ablation in liquid and characterized by UV-Vis spectroscopy, photoluminescence (PL), X-ray diffraction (PXRD) and field scanning electron microscopy (FESEM). These techniques revealed successfully the formation of CNT-alpha-Fe2O3 and Bi@CNT-alpha-Fe2O3 nanocomposites. The photocatalytic activities of the Fe2O3, CNT-alpha-Fe2O3, and Bi@CNT-Fe2O3 photocatalysts were evaluated by the degradation of methylene blue (MB) dye under ultraviolet (UV) light irradiation in the presence of a very low concentration of hydrogen peroxide (H2O2) as an oxidizing agent. The results show that the Bi@CNT-alpha-Fe2O3 NC has the highest photocatalytic degradation efficiency of MB which completes in 20 min of UV light irradiation. In addition, the obtained rate constants (min-1) of Bi@CNT-alpha-Fe2O3 NC were 1.3 and 3.4 times higher than those of CNT-alpha-Fe(2)O(3 )and alpha-Fe2O3. nanocatalysts, respectively.en10.1016/j.optlastec.2022.108430info:eu-repo/semantics/closedAccessPulsed Laser Ablation; Photocatalysis; Methylene Blue; Bismuth Nps; Fe-2 O-3 Nps; Cnt; NanocompositeNano-Particles; Tio2Article1552-s2.0-85133407142WOS:000827583800002Q1Q1