Abstract
It has been a fascinating and significant topic that how the chemical composition and surface structure of nanomaterials govern the catalytic performance. In this paper, we deliberately design molybdenum phosphosulfide nanoparticles anchored on the carbon nanotubes (CNTs) and systematically study the correlation between structure/surface composition and the electrochemical hydrogen evolution reaction (HER) activity and stability. We discover that the HER activities show significant enhancement with the incorporation of P in the molybdenum disulfide structure (MoS2|P/CNT) or S in the molybdenum phosphide structure (MoP|S/CNT). The stability of the MoS2|P/CNT catalyst exhibits high stability which is consistent with the pristine MoS2/CNT, while the stability of the MoP/CNT sample is enhanced after the introduction of the S element. The density function theory (DFT) results indicate that the doped P atoms in the MoS2 structure provide more enhanced active sites, leading to promoted HER activity. For the MoP|S/CNT samples, the doped S site is calculated to be less active for HER yet can greatly enhance P site to present better activity. The anion doping effect unveiled here provides insights into molybdenum phosphosulfides for HER and may also be expanded to broad catalyst design for energy related 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.
