Self-Improvement of Ti:Fe2O3 Photoanodes: Photoelectrocatalysis Improvement after Long-Term Stability Testing in Alkaline Electrolyte
Source abstract
Abstract
Hematite photoanode is a widely accepted stable photoelectrode in a strong alkali solution, such as NaOH aqueous solution. However, no one systematically investigates the photoelectrochemical stability of hematite-based photoanodes. More importantly, there are some contradictory results about the stability of hematite photoanodes in the literature. Herein we investigate the long-term stability of a Ti doped hematite (Ti:Fe2O3) photoanode in 1.0 M NaOH under visible light. Ti:Fe2O3 photoanode exhibits the significant photocurrent enhancement and the cathodic shift of the onset potential after long-term working in a strong alkali solution. Detailed characterizations reveal that an FeOOH layer, which serves as cocatalyst for self-improvement of Ti:Fe2O3 photoanodes, is formed at the interface of the Ti:Fe2O3/electrolyte junction.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Iron oxide chemistry and applications · Advanced Photocatalysis Techniques · Arsenic contamination and mitigation
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Materials Science and Devices, Suzhou University of Science and Technology, Kerui Road, Suzhou 215009, People’s Republic of China
Institute for Clean Energy & Advanced Materials, Faculty of Materials and Energy, Southwest University, Tiansheng Road, Chongqing 400715, People’s Republic of China
Funding
China Postdoctoral Science Foundation · National Natural Science Foundation of China
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