Fabrication of heterojunction MnTiO₃–TiO₂-decorated carbon nanofibers via electrospinning as an effective multifunctional photocatalyst

Abstract In this paper, we successfully synthesized heterojunction manganese titanate/titanate nanoparticles (MnTiO 3 –TiO 2 NPs)-decorated carbon nanofibers (CNFs) employing the electrospinning process. The morphology, crystallinity, and chemical composition of MnTiO /TiO -decorated CNFs is characterized via SEM, FESEM, STEM, TEM EDX, XRD techniques. nanocomposite exhibits good performance for photodegradation methylene blue (MB) dye hydrolysis ammonia–borane complex hydrogen releasing experiment in a batch reactor under visible light. A mathematical model was developed to predict photocatalytic activity produced with various parameters. operational parameters include effect initial concentration, catalyst dosage, light intensity, reaction temperature, which are studied validate model. rate constant MB found be 0.0153 min −1 an concentration 5 mg·L catalytic dosage 200 at temperature 25°C intensity 25 W·m −2 . Similarly, H generation TiO @CNFs irradiation observed 0.31 mol 2.95 mol, respectively, corresponding exposure 10 min. We also demonstrated that yield increases compared 1.51 darkness. Finally, comparisons were made between experimental model-predicted values final concentrations. Theoretical data agreement @CNFs.