Abstract
Solar-driven photocatalytic water splitting has a great promising impact and versatile green approach to producing hydrogen gas from solar energy for future energy storage devices. Furthermore, noble metal free catalysts have significant benefits in photon induced charge carrier transfer and faradic reaction for photocatalytic water splitting. Herein, we successfully synthesized the garlic peel-derived activated carbon sphere (ACS) and nanocomposite with TiO2 nanoparticles (NPs) using a facile hydrothermal technique for photocatalytic water splitting. The surface morphology, optical property and photocatalytic water splitting activity of prepared hybrid nanocomposite are thoroughly investigated with respect to the different ratios of ACS. In photocatalyst water splitting analysis, the optimal hybrid catalyst of ACS (6 % wt) with TiO2 NPs shows enhanced photocatalytic performance with the hydrogen production rate of 203 μmol g−1 h−1 under solar irradiation. The excellent solar driven water splitting performance of optimal hybrid catalyst has been owing to the enhanced photon harvesting ability and formation of the favorable pathway to effective charge separation and migration on TiO2/ACS surface. Thus, the proposed biomass supported nanocomposite scheme as a hybrid photocatalyst represents to develop the effective bio-mass assisted photocatalyst for solar water splitting process.
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