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Chemistry An Asian Journal - 2025 - Khan - Enhanced Photoelectrochemical Water Splitting Using Bismuth Bismuth Selenide11.60 MB
Published VersionCC BY-NC V4.0, Open Access
Journal article
Enhanced Photoelectrochemical Water Splitting Using Bismuth/Bismuth Selenide Nanocomposites
Chemistry: An Asian Journal, Vol.20(6), pp.1-12
2025
PMID: 39976241
Abstract
Solar-driven photoelectrochemical water splitting is a promising method for generating renewable and sustainable energy, as it effectively harnesses sunlight to convert it into chemical bonds. Among the many materials explored for photoelectrochemical water oxidation, metal selenides stand out because of their narrow band gaps. In this study, we successfully developed a high-performance heterojunction nanostructure comprising a p-type Bi/Bi2Se3 photocathode using a facile solvothermal method for efficient water splitting. Various characterization techniques confirmed the structural and optical properties of the fabricated Bi/Bi2Se3 nanocomposite. X-ray diffraction (XRD) patterns along with Transmission Electron Microscopy (TEM) images, indicated a single-phase rhombohedral Bi2Se3 crystal structure, along with Bi nanoparticles, confirmed the formation of a Bi/Bi2Se3 nanocomposite, while X-ray photoelectron spectroscopy (XPS) and energy dispersive X-ray (EDX) demonstrated the successful formation of heterojunctions. The as-prepared photocatalyst exhibited an impressive photocurrent density of 395 μAcm−2 at 0 V versus RHE, which is approximately eight times superior to Bi2Se3. Detailed electrochemical characterization revealed that the high photocurrent density of Bi/Bi2Se3 is due to improved light harvesting capability, enhanced charge separation, and a suppressed water oxidation back reaction. This innovative approach represents a significant advancement in solar-driven photoelectrochemical water splitting for sustainable energy production.
Details
- Title
- Enhanced Photoelectrochemical Water Splitting Using Bismuth/Bismuth Selenide Nanocomposites
- Authors
- Sumayyah Khan - National University of Sciences and TechnologyManzar Sohail (Corresponding Author) - National University of Sciences and TechnologyGeoffrey Will - University of the Sunshine Coast, Queensland, School of Science, Technology and EngineeringAnthony O' Mullane - Queensland University of TechnologyAhmed Abdala - Hamad bin Khalifa UniversityMd A Wahab (Corresponding Author) - Queensland University of Technology
- Publication details
- Chemistry: An Asian Journal, Vol.20(6), pp.1-12
- Publisher
- Wiley-VCH Verlag GmbH & Co. KGaA
- Date published
- 2025
- DOI
- 10.1002/asia.202400858
- ISSN
- 1861-471X; 1861-4728
- PMID
- 39976241
- Copyright note
- © 2025 The Author(s). Chemistry - An Asian Journal published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
- Data Availability
- The data that support the findings of this study are available from the corresponding author upon reasonable request.
- Grant note
- The Higher Education Commission. Grant Number: HEC-NRPU 15745
- Organisation Unit
- School of Science, Technology and Engineering
- Language
- English
- Record Identifier
- 991105711702621
- Output Type
- Journal article
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web Of Science research areas
- Chemistry, Multidisciplinary