Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 6, Issue 46, Pages 23478-23485Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ta07832g
Keywords
-
Funding
- National Natural Science Foundation of China [21872066]
- Fundamental Research Funds for the Central Universities [lzujbky-2017-kb11]
- Natural Science Foundation of Gansu [17JR5RA213]
- Key Laboratory of Catalytic Engineering of Gansu Province and Resources Utilization, Gansu Province
Ask authors/readers for more resources
Hematite is a prototypical photoanode material that has recently piqued great interest, but fails to deliver the expected performance. The most pronounced disadvantage that plagues the promises held by hematite is its low charge separation efficiency and poor conductivity. In this study, we constructed an efficient hole migration pathway by integrating the co-catalyst (NiOOH) onto the homojunction structured Fe2O3 coating on F-doped -Fe2O3 nanorods (NiOOH/Fe2O3/F-Fe2O3 NRs). The resulting photoanode exhibited higher photocurrent density (3.4-fold higher than pristine Fe2O3) and lower onset potential (0.61 V-RHE) than most reported hematite-based photoanodes. Detailed physical characterization and electrochemical experiments results reveal that the origin of such superior photoelectrochemical water oxidation performance is due to F-doping, built-in field formation and efficient hole extraction. This newly designed photoanode fulfils the requirements of low surface trapping sites, high conductivity, efficient charge separation and injection efficiency. These findings may open a new avenue of fabricating various efficient homojunction photoanodes for practical PEC water splitting.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available