Biomass-derived carbon nanosheets coupled with MoO2/Mo2C electrocatalyst for hydrogen evolution reaction

Chen, Xiaojun; Sun, Jingjing; Guo, Tianyu; Zhao, Ruihua; Liu, Lu; Liu, Bichan; Wang, Yating; Li, Jinping; Du, Jianping

doi:10.1016/j.ijhydene.2021.12.173

Cited by 20 publications

(9 citation statements)

References 39 publications

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“…After continuous electrolysis in alkaline solution for 10 h, the slight decrease in the stability of the 2.0-MCC is due to corrosion by the alkaline electrolyte. 45 The catalytic activity of the n-MCC materials in acidic solution was further studied, and the HER results are shown in Fig. 5.…”

Section: Resultsmentioning

confidence: 99%

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Engineering micro/nanostructures of Mo₂C/porous nanocarbon for enhanced hydrogen production

Liu

et al. 2023

New J. Chem.

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Section: Resultsmentioning

confidence: 99%

“…After continuous electrolysis in alkaline solution for 10 h, the slight decrease in the stability of the 2.0-MCC is due to corrosion by the alkaline electrolyte. 45…”

Section: Resultsmentioning

confidence: 99%

Engineering micro/nanostructures of Mo₂C/porous nanocarbon for enhanced hydrogen production

Liu

et al. 2023

New J. Chem.

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“…65-8766). [22,24] Notably, adding amount of melamine has obvious effect on peak intensity and full width at half maximum (line b, c, and d), suggesting there are a significant impact on the crystalline grain size and dispersion of Mo 2 C. Raman spectroscopy was used to study the structure of carbon-based Mo 2 C materials (Figure 1c). The peak at 819 cm −1 can be attributed to formation of molybdenum carbide.…”

Section: Resultsmentioning

confidence: 99%

“…[20] Similarly, molybdenum carbide NPs were anchored on the N-doped carbon nanosheets by designing a Mo-involved precursor and displayed high activity in HER. [21] Chen et al [22] prepared the carbon nanosheets coupled with MoO 2 /Mo 2 C electrocatalyst by one-step solid-state method, and proved that the MoO 2 /Mo 2 C interface promoted electron transfer and molecular diffusion in electrocatalysis, thereby improving the…”

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Controllable N Doped in Carbon Nanolayers@Mo₂C Nanodots as Electrocatalyst Boosts High‐Efficient Hydrogen Production

Mao

Wang

et al. 2022

Part & Part Syst Charact

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Mo2C is one of the promising alternatives to the precious metal catalyst for hydrogen evolution reaction (HER). However, it is still challenging to prepare highly dispersed Mo2C and prevent nanoparticles (NPs) from sintering during high‐temperature carbonization. Herein, a strategy is proposed to realize dual purposes that confine the coalescence of Mo2C NPs and redistribute charge density by regulating N‐doped contents. As‐synthesized molybdenum carbide nanodots are well dispersed on the N‐doped carbon nanolayers, and the size of Mo2C is uniform and less than 5 nm. The HER tests reveal that as‐prepared Mo2C nanodots exhibit excellent electrocatalytic activity for HER and long‐term stability. Theory calculation proves that optimizing N doping amount can tune hydrogen adsorption free energies and redistribute charge density. The present study provides insight into the impact of nitrogen doped in C/Mo2C and also a synthetic route to achieve heteroatom doping and size control for the synthesis of nanocatalysts beyond Mo2C.

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“…(d) measured capacitive currents at 0.2 V (vs. RHE) as a function of scan rate; Table S1: Element contents of lignosulfonate; Table S2: The amounts of each element for Mo 2 C/N,S-C and Mo 2 C/S-C; Table S3: Comparison of HER performance in alkaline media with various reported biomass-derived molybdenum carbide-based catalysts. References [ 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 ].…”

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Molybdenum Carbide Anchored on N,S Co-Doped Carbon Composite Derived from Lignosulfonate as a High Performance Electrocatalyst for Hydrogen Evolution Reaction

Park

Hwang

et al. 2022

Nanomaterials

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A composite of Mo2C nanoparticles dispersed onto a nitrogen and sulfur co-doped carbon scaffold (Mo2C/N,S-C) was prepared by a simple and environmentally friendly method of one-pot annealing of MoCl5, urea, and lignosulfonate under a N2 atmosphere at 700 °C. Lignosulfonate, a by-product of the sulfite pulping process, was employed as a feedstock to fabricate the S-doped carbon scaffold and carbide simultaneously, and urea acted as a nitrogen source for N-doping to carbon. The as-prepared Mo2C/N,S-C catalyst showed high performance for the hydrogen evolution reaction (HER), with a small overpotential of 105 mV at 10 mAcm−2, and good stability for 3000 cycles. The improved HER performance of the Mo2C/N,S-C originated from the interplay between the highly active Mo2C nanoparticles and the N,S co-doped carbon scaffold with its high electrical conductivity and large surface area. Furthermore, N,S co-doping to carbon improved the hydrophilicity of the catalyst surface, thus further enhancing the HER activity.

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Biomass-derived carbon nanosheets coupled with MoO2/Mo2C electrocatalyst for hydrogen evolution reaction

Cited by 20 publications

References 39 publications

Engineering micro/nanostructures of Mo₂C/porous nanocarbon for enhanced hydrogen production

Engineering micro/nanostructures of Mo₂C/porous nanocarbon for enhanced hydrogen production

Controllable N Doped in Carbon Nanolayers@Mo₂C Nanodots as Electrocatalyst Boosts High‐Efficient Hydrogen Production

Molybdenum Carbide Anchored on N,S Co-Doped Carbon Composite Derived from Lignosulfonate as a High Performance Electrocatalyst for Hydrogen Evolution Reaction

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Biomass-derived carbon nanosheets coupled with MoO2/Mo2C electrocatalyst for hydrogen evolution reaction

Cited by 20 publications

References 39 publications

Engineering micro/nanostructures of Mo2C/porous nanocarbon for enhanced hydrogen production

Engineering micro/nanostructures of Mo2C/porous nanocarbon for enhanced hydrogen production

Controllable N Doped in Carbon Nanolayers@Mo2C Nanodots as Electrocatalyst Boosts High‐Efficient Hydrogen Production

Molybdenum Carbide Anchored on N,S Co-Doped Carbon Composite Derived from Lignosulfonate as a High Performance Electrocatalyst for Hydrogen Evolution Reaction

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Engineering micro/nanostructures of Mo₂C/porous nanocarbon for enhanced hydrogen production

Engineering micro/nanostructures of Mo₂C/porous nanocarbon for enhanced hydrogen production

Controllable N Doped in Carbon Nanolayers@Mo₂C Nanodots as Electrocatalyst Boosts High‐Efficient Hydrogen Production