Abstract
The exploration of efficient alkaline hydrogen evolution photocatalysts is very meaningful in overall water splitting due to the fact that the high O2 evolution performance is usually obtained under alkaline conditions. Herein, we successfully prepared a kind of photocatalysts with excellent H2 production activity in an alkaline environment by combining Lindqvist-type polyoxoniobate K7HNb6O19 with Co3O4. The hydrogen production performance of the optimal sample could reach 5394.17 μmol g−1 under highly alkaline conditions. The superior H2 evolution activity is mainly endowed by p-n heterojunction creating an internal-built electric field on the interface of the two semiconductors, which realizes the effective spatial separation of electron-hole pairs. Simultaneously, the increased oxygen vacancies and lamellar structure of catalysts also respectively endow samples with a high H2O adsorption capacity and efficient photoinduced carrier separation rate. The work will be instructive for designing high-efficiency and stable HER catalyst in alkaline conditions for practical applications.
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.
