Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(21), P. 21360 - 21370

Published: Oct. 25, 2024

Hybrid photocatalytic systems have drawn significant attention to produce renewable hydrogen from water splitting. High performances of hybrid catalysts depend upon synergism and effective charge transfer, specifically during the photoreaction. In this work, Cu–Fe-loaded dual-doped Si–gC3N4/Al–rTiO2 been synthesized introduced. Cu–Fe cocatalysts were deposited by coprecipitation chemical reduction, whereas Si Al doping was in situ achieved on hydrothermal reactions. Catalysts abbreviated as Cu–Fe@Si–CN/Al–TO, where CN = gC3N4 TO rTiO2. Morphology optical characteristics evaluated X-ray diffraction (XRD), Raman, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), atomic force (AFM), UV–vis/drs, photoluminescence (PL), dispersive (EDX), photoelectron (XPS), electrochemical response has justified via impedance (EIS) technique. All photoreactions performed a quartz reactor (150 mL/Velp-UK), evolution activities monitored gas chromatograph (GC–TCD/Shimadzu-Japan). Results depict that existence dopants reduced band gap rTiO2 extended its photon/light absorption capability. The sheets enhance overall transfer contributing relatively higher induction active sites. It predicted Cu generates high-energy electrons (i.e., surface plasmon resonance, SPR-induced charges) progressively Si–gC3N4, they are dragged Al–rTiO2 Fe act an mediator. Although there many challenges ahead, aforementioned catalyst potential replace costly conventional priorly used for generation technologies.

Language: Английский