A General Method for the Synthesis of Hybrid Nanostructures Using MoSe2 Nanosheet-Assembled Nanospheres as Templates
| Autor: | Ye Chen, Chaoliang Tan, Shikui Han, Qinglang Ma, Hua Zhang, Yifu Yu, Kai Zhou, Junze Chen, Weijia Zhou, Hongfei Cheng, Ying Huang |
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| Přispěvatelé: | School of Materials Science and Engineering, Centre for Programmable Materials |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Multidisciplinary
Nanostructure General method Materials science Materials [Engineering] 010405 organic chemistry Science Composite number Electrocatalysts Nanotechnology Overpotential 010402 general chemistry 01 natural sciences 0104 chemical sciences Catalysis Template Transition metal Catalyst Nanosheet |
| Zdroj: | Research, Vol 2019 (2019) |
| ISSN: | 2639-5274 |
| Popis: | The layered transition metal dichalcogenides (TMDs) and transition metal phosphides are low-cost, earth-abundant, and robust electrocatalysts for hydrogen evolution reaction (HER). Integrating them into hybrid nanostructures is potentially promising to further boost the catalytic activity toward HER based on their synergistic effects. Herein, we report a general method for the synthesis of a series of MoSe2-based hybrid nanostructures, including MoSe2-Ni2P, MoSe2-Co2P, MoSe2-Ni, MoSe2-Co, and MoSe2-NiS, by postgrowth of Ni2P, Co2P, Ni, Co, and NiS nanostructures on the presynthesized MoSe2 nanosheet-assembled nanospheres, respectively, via a colloidal synthesis method. As a proof-of-concept application, the as-synthesized hybrid nanostructures are used as electrocatalysts for HER, exhibiting high activity and stability in acidic media. Among them, the MoSe2-Co2P composite shows the highest HER activity with an overpotential of 167 mV at 10 mA cm-2. Ministry of Education (MOE) Nanyang Technological University Published version This work was supported by MOE under AcRF Tier 2 (ARC 19/15; Nos. MOE2014-T2-2-093, MOE2015-T2-2-057, MOE2016-T2-2-103, and MOE2017-T2-1-162) and AcRF Tier 1 (2016-T1-001-147, 2016-T1-002-051, 2017-T1-001-150, and 2017-T1-002-119) and Nanyang Technological University under the Start-Up Grant (M4081296.070.500000) in Singapore. S.H. thanks the support from the Fundamental Research Funds for the Central Universities (No. PA2018GDQT0013) in China. We would like to acknowledge the Facility for Analysis, Characterization, Testing and Simulation, Nanyang Technological University, Singapore, for use of their electron microscopy (and/or X-ray) facilities. H.Z. thanks the support from the Innovation and Technology Commission via the Hong Kong Branch of National Precious Metals Material Engineering Research Center and the Start-Up Grant from the City University of Hong Kong. |
| Databáze: | OpenAIRE |
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