Abstract
Bismuth (Bi) is a semimetal, which has proved particular behavior as a plasmonic photocatalyst/co-catalyst. In the present work, we for the first time successfully synthesized Bi/α- Bi2O3 with a porous nanodendritic morphology on TiO2 nanotubes (TiNT) using a one-step electrodeposition process to achieve both efficient surface plasmon resonance (SPR) effect enhancement and high specific surface area.Scanning electron microscopy (SEM) and X-ray diffraction (XRD) characterizations were employed to evaluate the physico-chemical and surface characterization of the materials. Electrochemical impedance spectroscopy (EIS) was performed to evaluate the electronic properties and charge transport of the considered materials. The photoelectrochemical characterizations of the composite were carried out through linear sweep voltammetry (LSV). LSV and UV–Vis diffuse reflectance spectroscopy demonstrate that the incorporated Bi significantly enhances light absorption in the UV and visible spectral. Significant improvement in photocurrent density, up to 5mAcm−2 at 1.5V vs SCE, and a low onset potential, −0.4V vs. SCE were found. The photoelectrochemical activity improvement can be attributed to enhanced absorption in the UV and visible light regions due to the presence of semimetallic Bi NPs with plasmon resonance (SPR) effect, more efficient charge separation/transportation due to the high specific surface area.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
