Boosting the electrocatalytic activity of ZrO2/MWCNT supported PdPt bi-metallic electrocatalyst towards ethanol oxidation reaction by electrochemical activation process and modeling by artificial neural network approach

Dabirifar, Zeynab; Khadempir, Sara; Kardan, Alireza; Karaman, Ceren

doi:10.1016/j.cherd.2022.02.009

Cited by 19 publications

(4 citation statements)

References 60 publications

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“…It is anticipated that fuel cell technologies will significantly diminish the utilization of oil and the emission of pollutants, including greenhouse gases, in comparison to traditional power generation technologies reliant on combustion. There are many distinct types of fuel cells, which are categorized based on the combination of fuel and oxidant [ 2 , 3 ]. Among these types, direct ethanol fuel cells (DEFCs) have gained significant attention due to the advantageous properties of ethanol as a liquid fuel.…”

Section: Introductionmentioning

confidence: 99%

“…The composites showed enhanced electron transfer and reaction kinetics, which resulted in a peak current density of 15.94 mA/cm 2 at a peak potential of 0.43 V. In another study, Chemcoub et al [9] focused on the development of an electrocatalyst that is both cost-effective and efficient, utilizing poly-pyrrole (PPy) and nickel nanoparticles (NiNPs) through galvanostatic and potentiostatic methods by investigating the effect of NiNPs content. The optimized composition of the electrocatalyst was achieved at 6 mM NiNPs content, resulting in a significant increase in anodic current density from 3.58 mA/cm 2 to 20.1 mA/cm 2 . It is found that the presence of an excessive quantity of nickel particles results in a reduction in the active sites of the material, leading to sluggishness in the electron transfer pathway.…”

Section: Introductionmentioning

confidence: 99%

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Candle Soot as a Novel Support for Nickel Nanoparticles in the Electrocatalytic Ethanol Oxidation

Mansor,

Budiman,

Zainoodin

et al. 2024

Nanomaterials

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The enhancement of carbon-supported components is a crucial factor in augmenting the interplay between carbon-supported and metal-active components in the utilization of catalysts for direct ethanol fuel cells (DEFCs). Here, we propose a strategy for designing a catalyst by modifying candle soot (CS) and loading nickel onto ordered carbon soot. The present study aimed to investigate the effect of the Ni nanoparticles content on the electrocatalytic performance of Ni–CS, ultimately leading to the identification of a maximum composition. The presence of an excessive quantity of nickel particles leads to a decrease in the number of active sites within the material, resulting in sluggishness of the electron transfer pathway. The electrocatalyst composed of nickel and carbon support, with a nickel content of 20 wt%, has demonstrated a noteworthy current activity of 18.43 mA/cm2, which is three times that of the electrocatalyst with a higher nickel content of 25 wt%. For example, the 20 wt% Ni–CS electrocatalytic activity was found to be good, and it was approximately four times higher than that of 20 wt% Ni–CB (nickel–carbon black). Moreover, the chronoamperometry (CA) test demonstrated a reduction in current activity of merely 65.80% for a 20 wt% Ni–CS electrocatalyst, indicating electrochemical stability. In addition, this demonstrates the great potential of candle soot with Ni nanoparticles to be used as a catalyst in practical applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Candle Soot as a Novel Support for Nickel Nanoparticles in the Electrocatalytic Ethanol Oxidation

Mansor,

Budiman,

Zainoodin

et al. 2024

Nanomaterials

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“…ZrO 2 and NiO as catalysts in the form of composites with other materials (both expensive catalysts such as platinum and palladium and other inexpensive materials and substrates, including metal oxides and sulfides or conductive polymers) have been studied for the oxidation of alcohols [ 22 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 ]. However, catalysts including both ZrO 2 and NiO have not been tested in the oxidation of methanol and ethanol alcohols.…”

Section: Introductionmentioning

confidence: 99%

Methanol and Ethanol Electrooxidation on ZrO2/NiO/rGO

2023

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Recently, transition metal oxides have been considered for various applications due to their unique properties. We present the synthesis of a three-component catalyst consisting of zirconium oxide (ZrO2), nickel oxide (NiO), and reduced graphene oxide (rGO) in the form of ZrO2/NiO/rGO by a simple one-step hydrothermal method. X-ray powder diffraction (XRD), scanning electron microscope (SEM), and bright-field transmission electron microscopy (BF-TEM) analyses were performed to accurately characterize the catalysts. Cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and linear sweep voltammetry (LSV) analyses were also carried out to investigate the methanol and ethanol alcohol electrooxidation ability of the synthesized nanocatalysts. Inspired by the good potential of metal oxides in the field of catalysts, especially in fuel-cell anodes, we investigated the capability of this catalyst in the methanol oxidation reaction (MOR) and ethanol oxidation reaction (EOR). After proving the successful synthesis and examining the surface morphology of these materials, detailed electrochemical tests were performed to show the outstanding capability of this new nanocatalyst for use in the anode of alcohol fuel cells. ZrO2/NiO/rGO indicated a current density of 26.6 mA/cm2 at a peak potential of 0.52 V and 99.5% cyclic stability in the MOR and a current density of 17.3 mA/cm2 at a peak potential of 0.52 V and 98.5% cyclic stability in the EOR (at optimal concentration/scan rate 20 mV/s), representing an attractive option for use in the anode of alcoholic fuel cells.

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“…The physical and chemical properties of metal oxide nanostructures are known to depend on several design parameters such as particle size, morphology, interparticle distances and the dielectric constant of the surrounding medium. Moreover, the metal oxide nanostructures exhibit several unique features such as functional biocompatibility, biosafety, chemical stability and improved catalytic properties which are essential characteristics for various applications such as fuel cell[ 13 ], energy storage[ 14 , 15 ], and sensors[ 16 – 19 ]. In particular, the advent of nanomaterials enabled the discovery of a number of electrochemical sensors with high performance.…”

Section: Introductionmentioning

confidence: 99%

Rapid detection of gingerol and thymol in medicinal foods based on Fe2O3 nanoparticles modified glassy carbon electrode

2022

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Ginger and Ajwain are used extensively in food products, natural medicine to treat certain common diseases and as an immunity booster against viral infections. In this work, we report the fabrication of a novel electrochemical sensor based on α-Fe 2 O 3 nanoparticles for detection and quantification of [6]-Gingerol (GIN) and Thymol (THY) which are water soluble phytochemicals derived from edible herbs Ginger and Ajwain respectively. The α-Fe 2 O 3 nanoparticles were synthesised by sol-gel method and its structure and composition were confirmed by powder X-ray diffraction and photoelectron spectroscopy studies. The α-Fe 2 O 3 NPs modified glassy carbon electrode (GCE) exhibited an excellent electrocatalytic activity towards the oxidation of GIN and THY in phosphate buffer saline at pH 7. The α-Fe 2 O 3 modified GCE exhibited the lowest detection limits of 35.2 nM and 24 nM for GIN and THY respectively over the corresponding dynamic ranges of 55.6 nM to 118 µM and 27.8 nM to 56 µM. Detailed interference study confirmed the potential anti-interference ability of the fabricated sensor against a number of potential interfering compounds. Cyclic stability study yielded relative standard deviation (RSD) values of 9.9% and 9.18% for GIN and THY respectively, demonstrating excellent stability of the sensor. Reproducibility of the α-Fe 2 O 3 /GCE was investigated by testing a number of electrodes which yielded RSD values of 1.08% and 0.97%, for GIN and THY respectively. These promising characteristic features of the proposed sensor make it suitable for quick and precise detection of GIN and THY in food and natural medicines. Graphical Abstract

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Boosting the electrocatalytic activity of ZrO2/MWCNT supported PdPt bi-metallic electrocatalyst towards ethanol oxidation reaction by electrochemical activation process and modeling by artificial neural network approach

Cited by 19 publications

References 60 publications

Candle Soot as a Novel Support for Nickel Nanoparticles in the Electrocatalytic Ethanol Oxidation

Candle Soot as a Novel Support for Nickel Nanoparticles in the Electrocatalytic Ethanol Oxidation

Methanol and Ethanol Electrooxidation on ZrO2/NiO/rGO

Rapid detection of gingerol and thymol in medicinal foods based on Fe2O3 nanoparticles modified glassy carbon electrode

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