Citation: Juan WANG, Zhongqiu WANG, Qin SHANG, Guohong WANG, Jinmao LI. NiS and Pt as dual co-catalysts for the enhanced photocatalytic H₂ production activity of BaTiO₃ nanofibers[J]. Chinese Journal of Inorganic Chemistry, ;2024, 40(9): 1719-1730. doi: 10.11862/CJIC.20240102 shu

NiS and Pt as dual co-catalysts for the enhanced photocatalytic H₂ production activity of BaTiO₃ nanofibers

Hubei Key Laboratory of Pollutant Analysis and Reuse Technology, College of Chemistry and Chemical Engineering, Hubei Normal University, Huangshi, Hubei 435002, China

Corresponding author: Juan WANG, wangjuan830508@163.com Jinmao LI, jemolee@126.com
Received Date: 28 March 2024
Revised Date: 12 July 2024

Figures(9)

A BaTiO₃/Pt/NiS double heterojunction photocatalyst with Pt and NiS as co-catalysts was prepared using electrostatic spinning, hydrothermal, and photo-deposition methods. The optimized BaTiO₃/Pt/NiS sample showed the highest hydrogen production rate of 489 μmol·h^-1·g^-1, which is 2.5 times higher than that of pure BaTiO₃. Exper-imental results and density functional theory (DFT) calculations have demonstrated the construction of a p-n junction between BaTiO₃ and NiS, which efficiently facilitates the transfer of photogenerated holes from BaTiO₃ to NiS. Additionally, the Schottky junction formed between BaTiO₃ and Pt promotes the migration of photogenerated electrons from BaTiO₃ to Pt. The opposite transfer routes of photogenerated electrons and holes naturally inhibit their recombination, resulting in a higher rate of hydrogen evolution. These results were further validated by photoelectro-chemical testing. The highest photocurrent density and smallest electrochemical impedance of the optimized BaTiO₃/Pt/NiS sample convincingly proved its fastest separation of photogenerated electrons and holes, thus displaying the highest activity for hydrogen production.
- BaTiO₃/Pt/NiS,
- nanofiber,
- dual co-catalyst,
- photocatalytic hydrogen production
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NiS and Pt as dual co-catalysts for the enhanced photocatalytic H2 production activity of BaTiO3 nanofibers

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NiS and Pt as dual co-catalysts for the enhanced photocatalytic H₂ production activity of BaTiO₃ nanofibers