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Core-shell nanocomposite of superparamagnetic Fe3O4 nanoparticles with poly(m-aminobenzenesulfonic acid) for polymer solar cells
摘要： Superparamagnetic Fe3O4 nanoparticles play a significant role in enhancing the performance and efficiency of polymer-based solar cells using nanocomposites. For the first time in this study, a novel superparamagnetic core-shell nanocomposite of poly(m-aminobenzenesulfonic acid) (PABS) and Fe3O4 was synthesized by in-situ polymerization of m-ABS as a monomer in the presence of FeCl3.6H2O as oxidant under solid-state conditions. The poly(m-aminobenzenesulfonic acid) (PABS)-Fe3O4 nanocomposite (NCPABS-Fe3O4) was characterized using scanning electron microscopy (SEM) and transmission electron microscopy (TEM) that revealed a core-shell morphology. Under simulated solar irradiation, the photovoltaic cell characteristics were measured. Based on our results, the polymer-hybrid solar cell was fabricated using FTO/TiO2/NCPABS-Fe3O4/Al and demonstrated a power conversion efficiency (PCE or η) 4.24% that was approximately 660% higher than those obtained from FTO/TiO2/(PABS)/Al. We have also proposed a new mechanism for the 660% enhanced efficiency. To the best of our knowledge, this is the highest enhancement reported in the literature. Our results showed that the polymer-hybrid solar cell was completely efficient with a high η in comparison with similar ones reported in literature, and also had less fabrication costs using green synthesis conditions with a simple structure and displayed resistance to oxidation with high stability.
关键词： conductive polymers,Fe3O4 nanoparticles,Solar cell,photovoltaics,core-shell nanocomposite
更新于2025-09-16 10:30:52
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Synthesis of N-doped TiO <sub/>2</sub> /SiO <sub/>2</sub> /Fe <sub/>3</sub> O <sub/>4</sub> magnetic nanocomposites as a novel purple LED illumination-driven photocatalyst for photocatalytic and photoelectrocatalytic degradation of naproxen: optimization and different scavenger agents study
摘要： N-doped TiO2/SiO2/Fe3O4 as a new magnetic photocatalyst that is active in visible light has been prepared by simple sol–gel method. The prepared samples were characterized by XRD, FESEM, EDX, TEM, BET, BJH, VSM, XPS, FT-IR, and DRS–UV/Vis analysis. The photocatalytic effect of synthesized samples on naproxen degradation was studied. The operational parameters were optimized through central composite design to achieve maximum efficiency. The optimum values for maximum efficiency were obtained at pH of 4.29, catalyst mass of 0.06 g, naproxen concentration of 9.33 mg L(cid:1)1, and irradiation time of 217.06 min. At these optimum conditions, the maximum photocatalytic degradation percentages of naproxen were found to be 96.32% at desirability function value of 1.0. Coupling the electrical current with the photocatalytic process proved that the electrical current was considerably efficient in decreasing the degradation time of removing the naproxen from aqueous solutions. The photocatalytic activity of the nanoparticles was also studied under sunlight. Considering the results provided by UV–Vis spectrophotometry and total organic carbon, it was found that the prepared samples are extraordinarily efficient to degrade naproxen under both purple LED and solar lights. Furthermore, the effect of different scavenger agents on naproxen degradation has been studied.
关键词： pharmaceutical compound,experimental design,Photodegradation,core–shell nanocomposite,titanium dioxide
更新于2025-09-16 10:30:52