Abstract:
The rutile seeding free host-guest BiVO4@Fe-TiO2 1D NRs were synthesized for the testing of
photoelectrochemical (PEC) water oxidation proficiency. The prepared nanorods were
systematically characterized by X ray diffraction(XRD), scanning electron microscopy(SEM),
Raman spectroscopy, UV visible diffuse reflectance spectrometry (UV, DRS) & reflectance
emission spectroscopy by using photoluminescence(PL). The study thoroughly shown that TiO2
NRs surface decoration and doping have been performed by successful one-step hydrothermal
method with good interfacial interaction, stable heterojunction boundary and resistive charges
recombination that directly improve the electron conductivity with current efficiency 3 folds of
pristine TiO2. The remarkable activity was attributed to decreased band gap from 3.02eV to 2.1
eV of bilayer heterojunction with type II band alignment which facilitated the separation of charge
carriers and profound photocatalysis. The photoelectrochemical activities were evaluated by
performing LSV, CA, EIS & Mott Schottky under illumination of visible filtered light of
100mW/cm2. The findings elucidate the homogenous deposition of guest material on modified
host TiO2 NRs has enhanced PEC performance with maximum electron agility and enhanced hole
reducing window which is in feasibility for hydrogen-fuel based devices as a sustainable energy
source.
