Synergistic Pt doping and phase conversion engineering in two-dimensional MoS2 for efficient hydrogen evolution

Simple item page
dc.contributor.authorLi, Yen_AU
dc.contributor.authorGu, QFen_AU
dc.contributor.authorJohannessen, Ben_AU
dc.contributor.authorZheng, Zen_AU
dc.contributor.authorLi, Cen_AU
dc.contributor.authorLuo, Yen_AU
dc.contributor.authorZhang, ZYen_AU
dc.contributor.authorZhang, Qen_AU
dc.contributor.authorFan, Hen_AU
dc.contributor.authorLuo, WBen_AU
dc.contributor.authorLiu, Ben_AU
dc.contributor.authorDou, SXen_AU
dc.contributor.authorLiu, HKen_AU
dc.date.accessioned2025-02-28T00:46:58Zen_AU
dc.date.available2025-02-28T00:46:58Zen_AU
dc.date.issued2021-06en_AU
dc.date.statistics2025-02-19en_AU
dc.description.abstractMolybdenum disulphide (MoS2) is proven to be a promising catalyst for hydrogen evolution reaction (HER), but the HER performance of reported MoS2-based catalysts is still limited by its poor conductivity and low density of active sites. Herein, a Pt-doped MoS2 (Pt@MoS2) catalyst is synthesized by a potential-cycling method, which introduces the Pt dopant into the MoS2 lattice and achieves partial 2H to 1T phase conversion of MoS2 simultaneously. Benefitting from the optimized geometric and electronic structure of MoS2, the Pt@MoS2 exhibits a low overpotential of 88.43 mV at 10 mA cm−2, which is decreased by two-thirds as compared to that of the pristine MoS2. A comprehensive study reveals the position and the contribution of Pt atom in electronic structure modulation of MoS2. Theoretical calculations further reveal that the S atom adjacent to the Pt in MoS2 acts as the most active site for HER, and possesses a small hydrogen adsorption free energy (∆GH*) of ~ 0.04 eV, similar to the benchmark Pt catalyst. This study opens up a new avenue for designing MoS2 and other transition metal dichalcogenide-based electrocatalysts with enhanced HER performance, as well as providing in-depth understanding on the HER mechanism in external metal-activated MoS2 catalyst. © 2021 Elsevier Ltd.en_AU
dc.description.sponsorshipThis work has been financially supported by Australian Research Council (ARC DP160102627, ARC DP170101467, LE120100104 and LE0237478), the China Scholarship Council (CSC), the National Science Foundation of Zhejiang Province (LY18E020007), the Bureau of Industry and Information Technology of Shenzhen for the “2017 Graphene Manufacturing Innovation Center Project” (No. 201901171523), and the Shenzhen Basic Research Project (Nos. JCYJ20200109144620815 and JCYJ20200109144616617). We sincerely thank the Australian Synchrotron Facility and ANSTO for conducting the XAS testing. We also thank Dr. Qiangmin Yu for discussion and inputs to this work. The authors would like to also thank Dr. Stephen Bewlay for critical reading of the manuscript, and also acknowledge the use of the facilities in the UOW Electron Microscopy Centre, with particular thanks to Dr. Gilberto Casillas-Garcia. This manuscript was written through the contributions of all the authors. All the authors have given approval to the final version of the manuscript.en_AU
dc.identifier.articlenumber105898en_AU
dc.identifier.citationLi, Y., Gu, Q., Johannessen, B., Zheng, Z., Li, C., Luo, Y., Zhang, Z., Zhang, Q., Fan, H., Luo, W., Liu, B., Dou, S., & Liu, H. (2021). Synergistic Pt doping and phase conversion engineering in two-dimensional MoS2 for efficient hydrogen evolution. Nano Energy, 84, 105898. doi:10.1016/j.nanoen.2021.105898en_AU
dc.identifier.issn2211-2855en_AU
dc.identifier.journaltitleNano Energyen_AU
dc.identifier.urihttps://doi.org/10.1016/j.nanoen.2021.105898en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/16003en_AU
dc.identifier.volume84en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectPlatinumen_AU
dc.subjectHydrogenen_AU
dc.subjectEngineeringen_AU
dc.subjectMolybdenumen_AU
dc.subjectDoped materialsen_AU
dc.subjectCatalystsen_AU
dc.subjectSynthesisen_AU
dc.subjectDisulfidesen_AU
dc.subjectEnergyen_AU
dc.subjectRenewable energy sourcesen_AU
dc.titleSynergistic Pt doping and phase conversion engineering in two-dimensional MoS2 for efficient hydrogen evolutionen_AU
dc.typeJournal Articleen_AU
Files
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.66 KB
Format:
Plain Text
Description:
Download
Collections
Journal Articles