Molybdenum disulfide and Au ultrasmall nanohybrids as highly active electrocatalysts for hydrogen evolution reaction

Zhang, Jinxuan; Wang, Tanyuan; Liu, Lu; Du, Kuangzhou; Liu, Wanglian; Zhu, Zhiwei; Li, Meixian

doi:10.1039/c6ta10385e

Cited by 42 publications

(29 citation statements)

References 50 publications

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“…[58] In addition to anion doping, cationic doping can also achieve defective MoS 2 catalysts. [60,61] Xu's group synthesized Zn-doped MoS 2 with S-vacancies (Zn@MoS 2 ) at high-temperature and allowed V S % to be tuned from 7.8% to 20.3% by the zinc dosage. [56] Chen et al hydrothermally synthesized Zndoped MoS 2 (ZnÀ MoS 2 ), [62] whose catalytic performance was improved via the synergy of electronic and morphological effects instead of defects.…”

Section: Heteroatom Dopingmentioning

confidence: 99%

Defects Enhance the Electrocatalytic Hydrogen Evolution Properties of MoS₂‐based Materials

Cheng

Song

et al. 2020

Chemistry An Asian Journal

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MoS 2 have recently emerged as alternatives to noble metals as electrocatalysts for the hydrogen evolution reaction (HER) owing to their abundance and low cost. Considering the shortcomings of MoS 2 , including insufficient active sites, inert basal plane, and poor conductivity, the electrocatalytic hydrogen evolution properties of MoS 2 can be improved in three ways: activating the inert basal plane to improve intrinsic activity, increasing active edge sites, and improving the conductivity. Defects can adjust the surface electronic structure of the crystal to bring the hydrogen adsorption free energy closer to zero. Therefore, current research has mainly used S-vacancies to activate the inert basal surface of MoS 2 ; used edge defects to increase the number of active sites; and used defective conductive carbon supports to improve the conductivity of MoS 2-based catalysts. This review introduces researches on improving the performance of MoS 2 for HER by considering the purpose, characterization, and preparation of defects.

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Section: Heteroatom Dopingmentioning

confidence: 99%

Defects Enhance the Electrocatalytic Hydrogen Evolution Properties of MoS₂‐based Materials

Cheng

Song

et al. 2020

Chemistry An Asian Journal

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“…[15][16][17][18][19][20] Decorating MoS 2 with foreign materials, such as Pt, Pd and metal oxide particles, has been shown to be an effective method to accelerate HER catalytic performance due to the activation of the basal plane via synergistic effect between MoS 2 and the decorating materials. [21][22][23][24][25] However, most of the currently reported decorating materials refer to metal particles, quite often of expensive noble metals whilst other more abundant metals suffered from instability under acidic conditions. [26,27] To date, efforts to develop low-cost MoS 2 -based HER catalysts with efficient and stable performance, in both acidic and alkaline conditions have faltered.…”

Section: Introductionmentioning

confidence: 99%

Design of active nickel single-atom decorated MoS2 as a pH-universal catalyst for hydrogen evolution reaction

et al. 2018

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“…The W 4f and O 1s binding energies of Ag/WO 3− x all show negatively shifted, compared with those of the WO 3− x (Figure b and c). Besides, compared to Ag nanoparticles, there is a positively binding energy shifted for Ag 3d in Ag/WO 3− x heterostructures (Figure d), which verifies the fast electron transfer between Ag nanoparticles and WO 3− x nanosheets and the enhancement of the surface electron density of WO 3− x owning to Ag doping …”

Section: Resultsmentioning

confidence: 65%

“…More importantly, porous structure that formed during CV cycles can facilitate the electrolyte diffusion. Besides, the doped Ag nanoparticles can effectively improve the conductivity of the Ag/WO 3− x …”

Section: Resultsmentioning

confidence: 99%

Ultrathin, Porous and Oxygen Vacancies‐Enriched Ag/WO_3−x Heterostructures for Electrocatalytic Hydrogen Evolution

Ren

Chen

2019

Chemistry An Asian Journal

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Exploring advanced electrocatalysts for electrocatalytic hydrogen evolution is highly desired but remains a challenge due to the lack of an efficient preparation method and reasonable structural design. Herein, we deliberately designed novel Ag/WO3−x heterostructures through a supercritical CO2‐assisted exfoliation‐oxidation route and the subsequent loading of Ag nanoparticles. The ultrathin and oxygen vacancies‐enriched WO3−x nanosheets are ideal substrates for loading Ag nanoparticles, which can largely increase the active site density and improve electron transport. Besides, the resultant WO3−x nanosheets with porous structure can form during the electrochemical cycling process induced by an electric field. As a result, the exquisite Ag/WO3−x heterostructures show an enhanced hydrogen evolution reaction (HER) activity with a low onset overpotential of ≈30 mV, a small Tafel slope of ≈40 mV dec−1 at 10 mA cm−2, and as well as long‐term durability. This work sheds light on material design and preparation, and even opens up an avenue for the development of high‐efficiency electrocatalysts.

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Molybdenum disulfide and Au ultrasmall nanohybrids as highly active electrocatalysts for hydrogen evolution reaction

Abstract: MoS2–Au nanohybrids prepared from MoS2 nanoparticles with gold nanoclusters by a solvothermal method showed outstanding electrocatalytic activity toward HER.

Cited by 42 publications

References 50 publications

Defects Enhance the Electrocatalytic Hydrogen Evolution Properties of MoS₂‐based Materials

Defects Enhance the Electrocatalytic Hydrogen Evolution Properties of MoS₂‐based Materials

Design of active nickel single-atom decorated MoS2 as a pH-universal catalyst for hydrogen evolution reaction

Ultrathin, Porous and Oxygen Vacancies‐Enriched Ag/WO_3−x Heterostructures for Electrocatalytic Hydrogen Evolution

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Molybdenum disulfide and Au ultrasmall nanohybrids as highly active electrocatalysts for hydrogen evolution reaction

Abstract: MoS2–Au nanohybrids prepared from MoS2 nanoparticles with gold nanoclusters by a solvothermal method showed outstanding electrocatalytic activity toward HER.

Cited by 42 publications

References 50 publications

Defects Enhance the Electrocatalytic Hydrogen Evolution Properties of MoS2‐based Materials

Defects Enhance the Electrocatalytic Hydrogen Evolution Properties of MoS2‐based Materials

Design of active nickel single-atom decorated MoS2 as a pH-universal catalyst for hydrogen evolution reaction

Ultrathin, Porous and Oxygen Vacancies‐Enriched Ag/WO3−x Heterostructures for Electrocatalytic Hydrogen Evolution

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Product

Resources

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Defects Enhance the Electrocatalytic Hydrogen Evolution Properties of MoS₂‐based Materials

Defects Enhance the Electrocatalytic Hydrogen Evolution Properties of MoS₂‐based Materials

Ultrathin, Porous and Oxygen Vacancies‐Enriched Ag/WO_3−x Heterostructures for Electrocatalytic Hydrogen Evolution