Ag‐Nanoparticle‐Anchored rGO‐Coated MIL‐88B(Fe) Hybrids as Robust Electrocatalysts for the Highly Efficient Oxygen Evolution Reaction at Neutral pH

Islam, Dewan Azharul; Barman, Koushik; Jasimuddin, Sk.; Acharya, H. N.

doi:10.1002/celc.201700883

Cited by 36 publications

(19 citation statements)

References 62 publications

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“…Bubbles that are generated continuously in the OER test impact the catalyst that is attached to the surface of the electrode and cause partial detachment, which may affect the catalyst performance. Problems faced by such post‐prepared electrodes are unavoidable . Therefore, it is necessary to develop in situ methods for preparing catalysts on highly active and stable conductive substrates.…”

Section: Introductionmentioning

confidence: 99%

High Efficiency FeNi‐Metal‐Organic Framework Grown In‐situ on Nickel Foam for Electrocatalytic Oxygen Evolution

et al. 2019

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Efficient and stable electrocatalysts are important for mitigating the energy crisis. Metal‐organic frameworks have attracted increased attention as a new type of electrocatalytic material. Here, a self‐assembled three‐dimensional FeNi‐metal‐organic framework electrode was synthesized in situ on a nickel foam by a solvent‐thermal method, which is used directly in the oxygen‐evolution reaction. The internal porous structure and synergy between the Fe and Ni metals enhance OER activity. Fe introduction enhanced the Ni electron density, increased the active sites and yielded excellent electrocatalytic performance. A low peak potential that started at 1.36 V was observed. The overpotential was only 190 mV at a current density of 10 mA cm−2, which corresponded to a small Tafel slope of 27.6 mV dec−1. The overpotential was only 223 mV at a current density of 100 mA cm−2. The stability of the electrode that was prepared in situ was improved significantly. No significant decrease in performance resulted during the 16‐h stability test.

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Section: Introductionmentioning

confidence: 99%

High Efficiency FeNi‐Metal‐Organic Framework Grown In‐situ on Nickel Foam for Electrocatalytic Oxygen Evolution

et al. 2019

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“…Transition metal silver (Ag) has good redox property and has been applied for visible light‐driven enhanced water splitting . However, there are few works on its electrocatalytic water oxidation , . Ag nanoparticle‐anchored rGO coating MIL‐88B(Fe) hybrid has been reported as a robust and efficient electrocatalyst during OER at neutral pH owing to effective interfacial interaction and electron transport .…”

Section: Introductionmentioning

confidence: 99%

“…However, there are few works on its electrocatalytic water oxidation , . Ag nanoparticle‐anchored rGO coating MIL‐88B(Fe) hybrid has been reported as a robust and efficient electrocatalyst during OER at neutral pH owing to effective interfacial interaction and electron transport . Therefore, it is of significance to obtain a good Ag‐based water oxidation catalyst by further improving the dispersion and charge transmission of Ag nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Keggin‐Type Polyoxometalate Modified Ag/Graphene Composite Materials for Electrocatalytic Water Oxidation

Chang

Sang

et al. 2019

Eur J Inorg Chem

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Here, two new polyoxometalate (POM)-based biimidazole (H 2 biim) complexes formulated as [Ag(H 2 biim) 2 ] 2 [Ag 4 -(H 2 biim) 4 ][(PW 12 O 40 ) 2 ] (1) and [Ag(H 3 biim) 2 ][PW 12 O 40 ]·4H 2 O (2) were synthesized by a hydrothermal method, and their structures were determined by single-crystal X-ray diffraction and other physico-chemical and spectroscopic methods. Furthermore, by using 1 and 2 as precursors, graphene as a carrier and N,N-dimethylformamide (DMF) as a reducing agent, two kinds of POM and Ag nanoparticle with high dispersion loaded graphene composite materials (denoted as PW 12 /Ag/graphene-[a] Figure 2. SEM image (a), TEM image (b), EDS elemental mapping (c), HRTEM image (d) of PW 12 /Ag/graphene-a.

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“…Recently, graphene based metal oxide hybrid material has emerged as a promising candidate in supercapacitor applications. Particularly, graphene have been chosen as matrices for metals and metal oxides due to its high electrical conductivity, thermal stability and mechanical flexibility . The high specific surface area of graphene helps to control the morphology of electrochemically active nanomaterials and increase their stability by restricting pulverization of the electrodes over cycling .…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Graphene‐Oxide (GO)‐Supported Sheet‐Like CuO Nanostructures Derived from a Metal‐Organic‐Framework Template for High‐Performance Hybrid Supercapacitors

et al. 2018

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In this report, graphene oxide (GO)-supported sheet-like CuO nanostructures have been fabricated through a novel room temperature method using copper-based metal-organic framework (MOF)-anchored graphene oxides. Copper terephthalate metal-organic framework (Cu-(BDC)-MOF) crystals were synthesized onto the surfaces of exfoliated graphene layers via coordination of the metallic centers with the oxygen functionalities of graphene oxides and terephthalate linkers. The alkaline ageing of the MOF supported graphene oxides in NaOH at ambient temperature leads to the GO/CuO hybrid nanostructures. The morphology and structure of the synthesized materials are examined by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscope (TEM) and selected area electron diffraction (SAED). The well-dispersed sheet-like CuO nanostructures on graphene oxides show excellent performance in supercapacitor applications.The GO/CuO hybrid nanostructures are capable of delivering a high specific capacitance of 606 F g À 1 at scan rate of 2 mV s -1 with excellent cycling stability over 93% retention of initial capacitance.

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Ag‐Nanoparticle‐Anchored rGO‐Coated MIL‐88B(Fe) Hybrids as Robust Electrocatalysts for the Highly Efficient Oxygen Evolution Reaction at Neutral pH

Cited by 36 publications

References 62 publications

High Efficiency FeNi‐Metal‐Organic Framework Grown In‐situ on Nickel Foam for Electrocatalytic Oxygen Evolution

High Efficiency FeNi‐Metal‐Organic Framework Grown In‐situ on Nickel Foam for Electrocatalytic Oxygen Evolution

Keggin‐Type Polyoxometalate Modified Ag/Graphene Composite Materials for Electrocatalytic Water Oxidation

Fabrication of Graphene‐Oxide (GO)‐Supported Sheet‐Like CuO Nanostructures Derived from a Metal‐Organic‐Framework Template for High‐Performance Hybrid Supercapacitors

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