TY - JOUR AU - Nguyen, Van Nghia AU - Nguyen, Manh Son AU - Doan, Minh Thuy PY - 2020/06/22 Y2 - 2024/03/29 TI - Fabrication CdS/Au/TiO2 sandwich nanofibers for enhanced photoelectrochemical water-splitting efficiency JF - Hue University Journal of Science: Natural Science JA - hueuni-jns VL - 129 IS - 1B SE - DO - 10.26459/hueuni-jns.v129i1B.5763 UR - https://jos.hueuni.edu.vn/index.php/hujos-ns/article/view/5763 SP - 15-23 AB - <p>The sandwich-structured CdS/Au/TiO<sub>2 </sub>nanofibers (NFs) act as a photoanode in the photoelectrochemical cell (PEC) for hydrogen generation by splitting water. The gold nanoparticles sandwiched between the TiO<sub>2 </sub>nanofibers and the CdS quantum dots (QDs) layers play an important role in enhancing the solar-to-chemical-energy conversion efficiency. The structure and morphology of the materials were characterized by using field-emission scanning electron microscopy (FE–SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The surface plasmon resonance (SPR) of the Au nanoparticles was investigated by using ultraviolet-visible (UV–Vis) diffuse reflectance spectroscopy. The PEC properties of the photoanode were measured on a three-electrode electrochemical analyzer. The obtained photoconversion efficiency of the CdS/Au/TiO<sub>2</sub> NFs is 4.1% under simulated-sunlight illumination with a 150 W xenon lamp. Working photoelectrode stability was tested, and the mechanism of the enhanced PEC performance was discussed.</p> ER -