MoS2-supported on free-standing TiO2-nanotubes for efficient hydrogen evolution reaction

Komba, Nathanael; Zhang, Gaixia; Pu, Zonghua; Wu, Mingjie; Rosei, Federico; Sun, Shuhui

doi:10.1016/j.ijhydene.2019.12.044

Cited by 15 publications

(4 citation statements)

References 64 publications

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“…Figure 6b demonstrates that the MoS2@PVA/TNAs@140 has the smallest Tafel slope value of 140.6 mV/decade, while TNAs and MoS2 have 169.4 mV/decade and 1849 mV/decade, respectively. MoS2@PVA/TNAs@140 shows a similar result to previous studies on MoS2/TiO2 materials synthesized by other methods [39]. These results indicate that the MoS2/TNAs could be easily synthesized by combining MosS2 with TNAs with a cPVA binding agent.…”

Section: Resultssupporting

confidence: 87%

Thermal Treatment of Polyvinyl Alcohol for Coupling MoS2 and TiO2 Nanotube Arrays toward Enhancing Photoelectrochemical Water Splitting Performance

et al. 2021

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Solar-driven photoelectrochemical (PEC) water splitting, using semiconductor photoelectrodes, is considered a promising renewable energy source and solution for environmental sustainability. Herein, we report polyvinyl alcohol (PVA) as a binder material for combining MoS2 and TiO2 nanotube arrays (TNAs) to improve PEC water splitting ability. By a thermal treatment process, the formation of the π conjunction in the PVA structure enhanced the PEC performance of MoS2/TNAs, exhibiting linear sweeps in an anodic direction with the current density over 65 μA/cm2 at 0 V vs. Ag/AgCl. Besides, the photoresponse ability of MoS2/TNAs is approximately 6-fold more significant than that of individual TNAs. Moreover, a Tafel slope of 140.6 mV/decade has been obtained for the oxygen evolution reaction (OER) of MoS2/TNAs materials.

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Section: Resultssupporting

confidence: 87%

Thermal Treatment of Polyvinyl Alcohol for Coupling MoS2 and TiO2 Nanotube Arrays toward Enhancing Photoelectrochemical Water Splitting Performance

et al. 2021

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“…In photocatalysis, the product separation is required. Nowadays, researchers are putting great effort into maximizing the production of hydrogen by water splitting with the eventual aim to generate hydrogen through sustainable ways [13,[118][119][120].…”

Section: Hydrogen Evolution Reactionsmentioning

confidence: 99%

Recent Progress and Approaches on Transition Metal Chalcogenides for Hydrogen Production

et al. 2021

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Development of efficient and affordable photocatalysts is of great significance for energy production and environmental sustainability. Transition metal chalcogenides (TMCs) with particle sizes in the 1–100 nm have been used for various applications such as photocatalysis, photovoltaic, and energy storage due to their quantum confinement effect, optoelectronic behavior, and their stability. In particular, TMCs and their heterostructures have great potential as an emerging inexpensive and sustainable alternative to metal-based catalysts for hydrogen evolution. Herein, the methods used for the fabrication of TMCs, characterization techniques employed, and the different methods of solar hydrogen production by using different TMCs as photocatalyst are reviewed. This review provides a summary of TMC photocatalysts for hydrogen production.

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“…Various nickel-based or molybdenum-based metals, oxides, phosphides, and sulfides have been reported to have good HER and HOR performances in alkaline electrolytes. − Optimizing the electrocatalytic activity of nonprecious metals is crucial in the development and commercialization of fuel cells. Changing the material structure to optimize the catalytic performance has received extensive attention, especially heterostructures .…”

Section: Introductionmentioning

confidence: 99%

Electron Density Modulation of MoO₂/Ni to Produce Superior Hydrogen Evolution and Oxidation Activities

Liang

Dong

et al. 2021

ACS Appl. Mater. Interfaces

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Hydrogen evolution reaction (HER) and hydrogen oxidation reaction (HOR) have aroused great interest, but the high price of platinum group metals (PGMs) limits their development.The electronic reconstruction at the interface of a heterostructure is a promising strategy to enhance their catalytic performance. Here, MoO 2 /Ni heterostructure was synthesized to provide effective HER in an alkaline electrolyte and exhibit excellent HOR performance. Theoretical and experimental analyses prove that the electron density around the Ni atom is reduced. The electron density modulation optimizes the hydrogen adsorption and hydroxide adsorption free energy, which can effectively improve the activity of both HER and HOR. Accordingly, the prepared MoO 2 /Ni@NF catalyst reveals robust HER activity (η 10 = 50.48 mV) and HOR activity (j 0 = ∼1.21 mA cm −2 ). This work demonstrates an effective method to design heterostructure interfaces and tailor the surface electronic structure to improve HER/HOR performance.

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MoS2-supported on free-standing TiO2-nanotubes for efficient hydrogen evolution reaction

Cited by 15 publications

References 64 publications

Thermal Treatment of Polyvinyl Alcohol for Coupling MoS2 and TiO2 Nanotube Arrays toward Enhancing Photoelectrochemical Water Splitting Performance

Thermal Treatment of Polyvinyl Alcohol for Coupling MoS2 and TiO2 Nanotube Arrays toward Enhancing Photoelectrochemical Water Splitting Performance

Recent Progress and Approaches on Transition Metal Chalcogenides for Hydrogen Production

Electron Density Modulation of MoO₂/Ni to Produce Superior Hydrogen Evolution and Oxidation Activities

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MoS2-supported on free-standing TiO2-nanotubes for efficient hydrogen evolution reaction

Cited by 15 publications

References 64 publications

Thermal Treatment of Polyvinyl Alcohol for Coupling MoS2 and TiO2 Nanotube Arrays toward Enhancing Photoelectrochemical Water Splitting Performance

Thermal Treatment of Polyvinyl Alcohol for Coupling MoS2 and TiO2 Nanotube Arrays toward Enhancing Photoelectrochemical Water Splitting Performance

Recent Progress and Approaches on Transition Metal Chalcogenides for Hydrogen Production

Electron Density Modulation of MoO2/Ni to Produce Superior Hydrogen Evolution and Oxidation Activities

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Product

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Electron Density Modulation of MoO₂/Ni to Produce Superior Hydrogen Evolution and Oxidation Activities