Electrocatalytic oxidation of formaldehyde on nanoporous nickel phosphate modified electrode

Touny, Ahmed H.; Tammam, Reham H.; Saleh, Mahmoud M.

doi:10.1016/j.apcatb.2017.11.031

Cited by 37 publications

(17 citation statements)

References 63 publications

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“…prepared Ni 3 (PO 4 ) 2 with Ag 3 PO 4 as the electrode that presented an outstanding capacity 478 C g –1 at 1 A g –1 . Various reported transition metal phosphates demonstrate that nickel-based phosphates possessing open frameworks and varied structures facilitate ion migration and cause volume expansion, and optimizing the morphological and porous features is acknowledged as the domain strategy to improve their electrochemical performances. − …”

Section: Introductionmentioning

confidence: 99%

Conversion of Amorphous MOF Microspheres into a Nickel Phosphate Battery-Type Electrode Using the “Anticollapse” Two-Step Strategy

et al. 2021

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Metal–organic frameworks (MOFs) have attracted great attention as templates for preparation of functional porous materials owing to their adjustable structures, rich porosity, and controllable components. However, collapsed templates during the conversion process hinder their application and synthesis of derivatives. In this study, we demonstrate a novel two-step etching strategy during which amorphous MOF microspheres are initially transformed into nickel hydroxide and then subsequently transformed into microspherical nickel phosphates. Through this strategy, the prepared nickel phosphates maintain the microspherical morphology of MOFs but with no MOF residuals, exhibiting ultrahigh specific surface area, uniform pore size, and good structural robustness. Examined as a supercapacitor electrode, they show an outstanding specific capacity of 820 C g–1 at 0.5 A g–1 and remarkable cycling stability of 88% capacity retention after 10 000 cycles. Moreover, an asymmetric supercapacitor constructed utilizing reduced graphene cross-linked with p-phenylenediamine oxide (PPD-rGO) as the cathode displays a preeminent energy density of 64.56 Wh kg–1 at a power density of 507 W kg–1. This strategy has important significance in guiding the preparation of high-performance MOF-derived electrodes.

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Section: Introductionmentioning

confidence: 99%

Conversion of Amorphous MOF Microspheres into a Nickel Phosphate Battery-Type Electrode Using the “Anticollapse” Two-Step Strategy

et al. 2021

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“…The electrocatalytic oxidation of urea at the nickel phosphate anode can be considered as an electrochemical‐catalytic mechanism which is explained as following:

true Ni (OH)_{2} (s) + OH^{-} \to NiOOH (s) + normalH_{2} normalO (l) + normale^{-}

true 6 NiOOH (s) + CO (NH_{2})_{2} (aq) + normalH_{2} normalO (l) \to 6 Ni (OH)_{2} (s) + normalN_{2} (g) + CO_{2} (g)

…”

Section: Resultsmentioning

confidence: 99%

Self‐Assembly Assisted Fabrication of Nanoporous Nickel (II) Phosphate Octahydrate Microspheres Catalyst with Orange Peel Surface toward Urea Oxidation

Imani

Oveisi

2019

ChemistrySelect

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Herein, we report an easy one‐step approach for the synthesis of nickel (II) phosphate octahydrate nanoporous microspheres catalyst (NiP) with orange peel surface under one‐pot hydrothermal single‐source precursor. The morphology and the particle size of the NiP materials were switched by tuning the parameters of the hydrothermal procedure. The materials were formed in a single phase of Ni3(PO4)2⋅8H2O with a monoclinic crystal lattice. The resulting self‐supported NiP/GC (glassy carbon) electrode exhibited superior activity, remarkable stability, and high electrochemical performance (680 mA.cm−2.mg−1 & 0.33 V oxidation potential) towards urea oxidation reaction in aqueous alkaline medium.

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“…NiPh material was synthesized by simple co-precipitation under mild conditions using a reflux system. The full description of the preparative approach can be found in the following ref. 59 .…”

Section: Methodsmentioning

confidence: 99%

“… 25 Consequently, the outstanding properties of nickel phosphate materials enable them to be commonly used for a variety of applications, including supercapacitors, 26 LIB, 27 and non-enzymatic sensors. 28 Moreover, nickel phosphate (NiPh) electrocatalyst has been capable of catalysing and improving the performance of urea oxidation, 29 methanol, 30 glucose, 31 formaldehyde in alkaline medium, 32 and glycerol in the neutral medium. 33 The activity of the NiPh electrocatalyst is attributed to the flexible and stable structural properties, chemical and thermal stability, and its multiple oxidation states.…”

Section: Introductionmentioning

confidence: 99%

Bimetallic nickel/manganese phosphate–carbon nanofiber electrocatalyst for the oxidation of formaldehyde in alkaline medium

et al. 2022

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Electrocatalytic oxidation of formaldehyde on nanoporous nickel phosphate modified electrode

Cited by 37 publications

References 63 publications

Conversion of Amorphous MOF Microspheres into a Nickel Phosphate Battery-Type Electrode Using the “Anticollapse” Two-Step Strategy

Conversion of Amorphous MOF Microspheres into a Nickel Phosphate Battery-Type Electrode Using the “Anticollapse” Two-Step Strategy

Self‐Assembly Assisted Fabrication of Nanoporous Nickel (II) Phosphate Octahydrate Microspheres Catalyst with Orange Peel Surface toward Urea Oxidation

Bimetallic nickel/manganese phosphate–carbon nanofiber electrocatalyst for the oxidation of formaldehyde in alkaline medium

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