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WS2–WC–WO3 nano-hollow spheres as an efficient and durable catalyst for hydrogen evolution reaction

Nano Convergence, 2021, 8(28), , pp.1-12 [Peer Reviewed Journal]

The Author(s) 2021 ;The Author(s) 2021. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;ISSN: 2196-5404 ;EISSN: 2196-5404 ;DOI: 10.1186/s40580-021-00278-3 ;PMID: 34542727

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Title:
WS2–WC–WO3 nano-hollow spheres as an efficient and durable catalyst for hydrogen evolution reaction
Author: Van Nguyen, Tuan ; Do, Ha Huu ; Tekalgne, Mahider ; Van Le, Quyet ; Nguyen, Thang Phan ; Hong, Sung Hyun ; Cho, Jin Hyuk ; Van Dao, Dung ; Ahn, Sang Hyun ; Kim, Soo Young
Subjects: Catalysts ; Chemical bonds ; Chemical composition ; Chemistry and Materials Science ; Composite materials ; Electrical resistivity ; Electrocatalysts ; Electron transfer ; Emission analysis ; Energy conversion ; Energy storage ; Field emission microscopy ; Field emission spectroscopy ; HER ; Hydrogen evolution ; Low cost ; Materials Science ; Metal carbides ; Morphology ; Nano hollow sphere ; Nanoscale Science and Technology ; Nanotechnology ; Nanotechnology and Microengineering ; Photoelectrons ; Raman spectroscopy ; Spectrum analysis ; Stability ; Synergistic effect ; Synthesis ; TMC ; TMD ; TMO ; Transition metal compounds ; Transition metal oxides ; Tungsten oxides ; WS2–WC–WO3composite ; X ray spectroscopy ; 고분자공학
Is Part Of: Nano Convergence, 2021, 8(28), , pp.1-12
Description: Transition metal dichalcogenides (TMDs), transition metal carbides (TMCs), and transition metal oxides (TMOs) have been widely investigated for electrocatalytic applications owing to their abundant active sites, high stability, good conductivity, and various other fascinating properties. Therefore, the synthesis of composites of TMDs, TMCs, and TMOs is a new avenue for the preparation of efficient electrocatalysts. Herein, we propose a novel low-cost and facile method to prepare TMD–TMC–TMO nano-hollow spheres (WS 2 –WC–WO 3 NH) as an efficient catalyst for the hydrogen evolution reaction (HER). The crystallinity, morphology, chemical bonding, and composition of the composite material were comprehensively investigated using X-ray diffraction, Raman spectroscopy, field emission scanning electron microscopy, and X-ray photoelectron spectroscopy. The results confirmed the successful synthesis of the WS 2 –WC–WO 3 NH spheres. Interestingly, the presence of nitrogen significantly enhanced the electrical conductivity of the hybrid material, facilitating electron transfer during the catalytic process. As a result, the WS 2 –WC–WO 3 NH hybrid exhibited better HER performance than the pure WS 2 nanoflowers, which can be attributed to the synergistic effect of the W–S, W–C, and W–O bonding in the composite. Remarkably, the Tafel slope of the WS 2 –WC–WO 3 NH spheres was 59 mV dec −1 , which is significantly lower than that of the pure WS 2 NFs (82 mV dec −1 ). The results also confirmed the unprecedented stability and superior electrocatalytic performance of the WS 2 –WC–WO 3 NH spheres toward the HER, which opens new avenues for the preparation of low-cost and highly effective materials for energy conversion and storage applications.
Publisher: Singapore: Springer Singapore
Language: English
Identifier: ISSN: 2196-5404
EISSN: 2196-5404
DOI: 10.1186/s40580-021-00278-3
PMID: 34542727
Source: PubMed Central
SpringerOpen website
ROAD: Directory of Open Access Scholarly Resources
ProQuest Central
DOAJ Directory of Open Access Journals

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WS2–WC–WO3 nano-hollow spheres as an efficient and durable catalyst for hydrogen evolution reaction

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