Tetra-carboxylic acid based metal-organic framework as a high-performance bifunctional electrocatalyst for HER and OER

Qiu, Qi; Wang, Tao; Jing, Lin‐Hai; Huang, Kun; Qin, Da‐Bin

doi:10.1016/j.ijhydene.2020.02.033

Cited by 49 publications

(26 citation statements)

References 77 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To date, platinum (Pt)-based materials have been considered as the most active and stable HER catalysts in the commercial electrolyzer cells, but their scarcity and high cost hamper the scaling up for practical hydrogen production (7,8). Therefore, it is highly urgent to seek active, stable, and earth-abundant alternatives to Pt-based catalysts toward efficient electrochemical hydrogen evolution in alkaline media (9)(10)(11)(12).…”

Section: Introductionmentioning

confidence: 99%

Exposing unsaturated Cu ₁ -O ₂ sites in nanoscale Cu-MOF for efficient electrocatalytic hydrogen evolution

et al. 2021

View full text Add to dashboard Cite

Conductive metal-organic framework (MOF) materials have been recently considered as effective electrocatalysts. However, they usually suffer from two major drawbacks, poor electrochemical stability and low electrocatalytic activity in bulk form. Here, we have developed a rational strategy to fabricate a promising electrocatalyst composed of a nanoscale conductive copper-based MOF (Cu-MOF) layer fully supported over synergetic iron hydr(oxy)oxide [Fe(OH)x] nanoboxes. Owing to the highly exposed active centers, enhanced charge transfer, and robust hollow nanostructure, the obtained Fe(OH)x@Cu-MOF nanoboxes exhibit superior activity and stability for the electrocatalytic hydrogen evolution reaction (HER). Specifically, it needs an overpotential of 112 mV to reach a current density of 10 mA cm−2 with a small Tafel slope of 76 mV dec−1. X-ray absorption fine structure spectroscopy combined with density functional theory calculations unravels that the highly exposed coordinatively unsaturated Cu1-O2 centers could effectively accelerate the formation of key *H intermediates toward fast HER kinetics.

show abstract

Section: Introductionmentioning

confidence: 99%

Exposing unsaturated Cu ₁ -O ₂ sites in nanoscale Cu-MOF for efficient electrocatalytic hydrogen evolution

et al. 2021

View full text Add to dashboard Cite

show abstract

“…, has been regarded as one of the most ideal energy sources. 1–3 Currently, hydrogen production by industrial means, such as steam reforming, not only consumes a lot of fossil fuels but also releases a lot of greenhouse gases. 4,5 In sharp contrast, electrochemical water splitting to molecular hydrogen via the hydrogen evolution reaction (HER) provides an attractive solution for environmentally friendly production of high-purity hydrogen.…”

Section: Introductionmentioning

confidence: 99%

“…Precious Pt or Pt-based materials have been developed as effective electrocatalysts to reduce energy barriers and increase the speed of the process. 1,12,17–20 Unfortunately, limited global supplies and high market prices hinder the large-scale application of precious metal materials. In order to find substitutes for precious metal catalysts, many non-noble three-dimensional transition metal compounds (such as compounds of Fe, Co, Ni, etc. )…”

Section: Introductionmentioning

confidence: 99%

Two Co(ii)/Ni(ii) complexes based on nitrogenous heterocyclic ligands as high-performance electrocatalysts for the hydrogen evolution reaction

Zhang

Hong

et al. 2022

Dalton Trans.

View full text Add to dashboard Cite

show abstract

“…Also, modifying organic ligands or grafting organic functional groups with diversified functions is another method to achieve the desired surface area and special structure. Although solvothermal/hydrothermal, [4,39] ultrasound-assisted, [40] electrospinning, [41] microwave-assisted, [42] spray-drying synthesis [43] methods, etc. have been widely reported for synthesizing MOFs, the hydrothermal/solvothermal techniques are still the mainstay in sewage treatment applications.…”

Section: Synthesis Methods Of Mofsmentioning

confidence: 99%

Applications of Metal‐Organic Frameworks in Water Treatment: A Review

Yang

Kai-liang

et al. 2021

Small

124

View full text Add to dashboard Cite

ions, synthetic dyes, antibiotics, and other substances in groundwater and wastewater discharged from factories have caused serious harm to the environment and human health. Therefore, it is vital to develop efficient water pollution treatment methods.The heavy metal ions discharged from factories into rivers and lakes can cause diffusion and pollution. Highly toxic heavy metal ions are easy to accumulate in organisms because they are not biodegradable. [1] Organic dyes and radioactive pollutants produced in industrial production will diffuse into soil and water resources, endangering the safety of animals, plants and human life. [2] The leakage of antibiotics in the fields of biology and medicine will destroy the balance and stability of the ecosystem. [3] An enormous number of pollutants are persistent and difficult to degrade. Scientists have been committed to developing various technologies and materials for removing pollutants from water environment. Nevertheless, effectively purifying sewage still remains a tough challenge.Various techniques are used for sewage purification to remove pollutants in the environment. Common methods include separation, [4] absorption, [5] photocatalytic degradation, [6] and membrane filtration. [7] However, traditional absorbents and catalysts such as zeolites, activated carbons, organic resins, etc. have poor pollutant removal capabilities. [8] Traditional adsorbents, such as carbons and clay minerals, exhibit weak ionic affinity and low adsorption efficiency for metals. [9] Furthermore, partial catalysts possess inferior charge separation efficiency, recyclability, and chemical stability, which is likely to cause secondary pollution to water sources, and does not meet the requirements of green, energy saving, and renewable in the field of modern environment protection. [10] Therefore, researchers have been trying to exploit an efficient and economical composite material with superb specific surface area, high separation and strong reusability. [11] Metal-organic framework (MOF) is a new type of composite material self-assembled by metal ions or metal clusters and organic linkers. [12] As a novel type porous material, MOF has adjustable pore size, superior specific surface area and excellent porosity, and its performance is more superiority than traditional materials such as zeolite and clay. [13] They have raisedThe ever-expanding scale of industry and agriculture has led to the gradual increase of pollutants (e.g., heavy metal ions, synthetic dyes, and antibiotics) in water resources, and the ecology and wastewater are grave problems that need to be solved urgently and has attracted widespread attention from the research community and industry in recent years. Metal-organic frameworks (MOFs) are a type of organic-inorganic hybrid material with a distinctive 3D network crystal structure. Lately, MOFs have made striking progress in the fields of adsorption, catalytic degradation, and biomedicine on account of their large specific surface and well-developed pore structure. This...

show abstract

Tetra-carboxylic acid based metal-organic framework as a high-performance bifunctional electrocatalyst for HER and OER

Cited by 49 publications

References 77 publications

Exposing unsaturated Cu ₁ -O ₂ sites in nanoscale Cu-MOF for efficient electrocatalytic hydrogen evolution

Exposing unsaturated Cu ₁ -O ₂ sites in nanoscale Cu-MOF for efficient electrocatalytic hydrogen evolution

Two Co(ii)/Ni(ii) complexes based on nitrogenous heterocyclic ligands as high-performance electrocatalysts for the hydrogen evolution reaction

Applications of Metal‐Organic Frameworks in Water Treatment: A Review

Contact Info

Product

Resources

About

Tetra-carboxylic acid based metal-organic framework as a high-performance bifunctional electrocatalyst for HER and OER

Cited by 49 publications

References 77 publications

Exposing unsaturated Cu 1 -O 2 sites in nanoscale Cu-MOF for efficient electrocatalytic hydrogen evolution

Exposing unsaturated Cu 1 -O 2 sites in nanoscale Cu-MOF for efficient electrocatalytic hydrogen evolution

Two Co(ii)/Ni(ii) complexes based on nitrogenous heterocyclic ligands as high-performance electrocatalysts for the hydrogen evolution reaction

Applications of Metal‐Organic Frameworks in Water Treatment: A Review

Contact Info

Product

Resources

About

Exposing unsaturated Cu ₁ -O ₂ sites in nanoscale Cu-MOF for efficient electrocatalytic hydrogen evolution

Exposing unsaturated Cu ₁ -O ₂ sites in nanoscale Cu-MOF for efficient electrocatalytic hydrogen evolution