Nickel-Cerium Layered Double Hydroxide as Electrocatalyst for Glycerol Oxidation

Assis, Geovanne L. de; Gonçalves, Josué M.; Bernardes, Juliana S.; Araki, Koji

doi:10.21577/0103-5053.20200131

Cited by 2 publications

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“…The suspensions of α-Ni(OH) 2 and the unprecedented Ni 1-xy V x Ce y -LDH NPs (x y 0.05 or 0.10) were prepared as reported previously (Assis et al, 2020;Azeredo et al, 2021) by dissolving the total of 4.82 mmol of the metal acetates (or metal chloride, in the case of vanadium ions) in 25 ml of glycerin at 50 °C. After the dissolution of the metal salts, 9.64 mmol of KOH dissolved in 25 ml of anhydrous n-butanol was added dropwise into the stirred solution at room temperature.…”

Section: Methodsmentioning

confidence: 99%

“…The formation of LDHs by the incorporation of Ce 3+ has also been a strategy in the development of sensors (Gonçalves et al, 2017;Azeredo et al, 2021) and electrocatalysts for oxidation reactions (Assis et al, 2020). For instance, Gonçalves et al (2017) developed nickel-based hydroxide nanoparticles (NPs) with enhanced electrocatalytic activity and stability by incorporation of 20 atom% of Ce 3+/4+ ions (Ni 0.8 Ce 0.2 -LDH).…”

Section: Introductionmentioning

confidence: 99%

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NiVCe-Layered Double Hydroxide as Multifunctional Nanomaterials for Energy and Sensor Applications

et al. 2021

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Multifunctional nanomaterials have been attracting increasing attention as solutions to the existing challenges in energy systems and sensing technologies. In this regard, multifunctional NiVCe-layered double hydroxide (NiVCe-LDH) nanoparticles were synthesized by the modified sol-gel method. The analysis of this material demonstrated excellent potential for its utilization as electrode materials for hybrid supercapacitor, oxygen evolution reaction (OER), and sensor applications. The NiVCe-LDH nanoparticles delivered a specific charge of 740 C g−1 at 10 A g−1 and decent rate performance (charge retention of 68.7% at 100 A g−1), showing excellent prospects as electrode material for hybrid energy storage devices. In addition, NiVCe-LDH nanoparticles have also been successfully applied as a proof-of-concept for OER, as confirmed by their low Tafel slope of 47 mV dec−1. Finally, trimetallic NiVCe-LDH-based screen-printed electrodes were developed for the sensing of hydrogen peroxide directly in a real complex mouthwash sample, achieving a satisfactory recovery value of around 98% using a fast and simple batch injection analysis procedure. These results allow us to predict the great potential of this trimetallic hydroxide for building electrochemical sensors with good perspectives as electroactive material for OER processes and energy storage technologies.

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Section: Methodsmentioning

confidence: 99%