Virtual Booth

The global energy crisis, driven by fossil fuel depletion and climate change, necessitates a transition to clean energy sources. Hydrogen is a promising alternative that can decarbonize key sectors, including industrial manufacturing, transportation, and power generation. Among green hydrogen technologies, photoelectrochemical (PEC) water splitting offers a sustainable solution by utilizing sunlight to produce hydrogen. However, conventional TiO2-based photoanodes suffer from large bandgaps (~3.2 eV), limiting their efficiency. This study presents a novel CQD-embedded Fe/Ni-doped TiO2 photoanode designed to overcome these limitations. The synthesized photoanodes, developed via TiO2 film deposition, Fe/Ni doping, and CQD incorporation, achieved a reduced bandgap of 1.89 eV, enhancing visible-light absorption and charge carrier dynamics. PEC performance evaluations demonstrated that the optimized 0.07 % (w/v) CQD-Fe/Ni-TiO2 photoanode exhibited a high photocurrent density of 4.50 mA/cm² at 1.23 V vs. V RHE and a hydrogen production rate of 4837 μmol/g·h. Additionally, it maintained efficiency even under low electrolyte concentrations, highlighting its potential for cost-effective and sustainable hydrogen production.