Synergistic impact of Ni–Cu hybrid oxides deposited on ordered mesoporous carbon scaffolds as non-noble catalyst for methanol oxidation

Theres, G. Sonia; Velayutham, G.; Krishnan, P. Santhana; Shanthi, K.

doi:10.1007/s10853-018-2884-1

Cited by 21 publications

(7 citation statements)

References 57 publications

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“…This can be ascribed to the increasing availability of MeOH to be adsorbed on the abundant active sites. However, beyond 1M MeOH concentration, there exists no more additional unoccupied active sites as well as the reaction intermediates and unreacted methanol tend to accumulate, thereby decreasing the current density [35]. In order to ensure that the presence of Ni ions is responsible for methanol oxidation catalytic activity, CV was carried out for UiO-66-NH 2 @MWCNTs under similar conditions.…”

Section: Metalation Ofmentioning

confidence: 99%

Metal-Organic Framework Mediated Ni-deposition on MWCNTs for Direct Methanol Fuel Cell Catalysis

Shams-Eldin

Ali

Hani

et al. 2023

Preprint

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Herein, we present the utilization of Ni2+-doped amine-functionalized UiO-66-NH2 metal-organic framework (MOF) nanoparticles deposited onto multi-walled carbon nanotubes (MWCNTs) as a precursor for electrocatalytically active catalyst towards methanol (MeOH) oxidation. The electrode material displayed an onset potential of 0.42 V (vs Hg/HgO) with maximum activity at 1 M MeOH concentration (143 mA.cm− 2 current density at 0.6 V vs Hg/HgO). The catalyst also demonstrated adequate stability, where 93.5% of its current density was retained after performing chronoamperometry for 1 hr.

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Section: Metalation Ofmentioning

confidence: 99%

Metal-Organic Framework Mediated Ni-deposition on MWCNTs for Direct Methanol Fuel Cell Catalysis

Shams-Eldin

Ali

Hani

et al. 2023

Preprint

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“…Table 1 shows the previously reported NiCu nanocomposite-based electrocatalysts for methanol electrooxidation and the values of their key performance indicators. [31][32][33][34][35][36] This research seeks to develop and express a more efficient, cheaper, and novel electrocatalyst using Cu, Ni, and GO or rGO as replacements for Pt. Here, NiCu, NiCu/GO, and NiCu/rGO nanocomposites are hydrothermally synthesized, characterized, and examined as electrocatalysts for alcohols electro-oxidation in an alkaline medium to explore the role of GO and rGO as supports for the NiCu composite.…”

Section: Introductionmentioning

confidence: 99%

“…Table 1 shows the previously reported NiCu nanocomposite-based electrocatalysts for methanol electrooxidation and the values of their key performance indicators. 31–36…”

Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of NiCu/GO and NiCu/rGO nanocomposites for fuel cell application

Mohamed,

Shaban,

Kordy

et al. 2024

RSC Adv.

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“…Similarly, oxides of Cu and Cr have demonstrated exceptional methanol oxidation in an alkaline medium using various fabrication methods and morphologies [25,26]. As a result, the mixed metal oxides of Ni, Cu, and Cr oxides are expected to possess a high electrocatalytic activity and stability in alkaline DMFCs for methanol oxidation.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Metal (Cu and Cr) Incorporated Nickel Oxide Films for Electrochemical Oxidation of Methanol

et al. 2021

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Methanol electrochemical oxidation in a direct methanol fuel cell (DMFC) is considered to be an efficient pathway for generating renewable energy with low pollutant emissions. NiO−CuO and Ni0.95Cr0.05O2+δ thin films were synthesized using a simple dip-coating method and tested for the electro-oxidation of methanol. These synthesized electrocatalysts were characterized by X-ray diffraction spectroscopy (XRD), X-ray photoelectron spectroscopy (XPS), Scanning electron microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDS), and Raman spectroscopy. Different electrochemical techniques were used to investigate the catalytic activity of these prepared electrocatalysts for methanol oxidation, including linear sweep voltammetry (LSV), electrochemical impedance spectroscopy (EIS), and chronoamperometry (CA). In the presence of 0.3 M methanol, the current densities of NiO−CuO and Ni0.95Cr0.05O2+δ thin films were found to be 12.2 mA·cm−2 and 6.5 mA·cm−2, respectively. The enhanced catalytic activity of NiO−CuO and Ni0.95Cr0.05O2+δ thin films may be a result of the synergistic effect between different metal oxides. The Chronoamperometry (CA) results of the mixed metal oxide thin films confirmed their stability in basic media. Furthermore, the findings of electrochemical impedance spectroscopy (EIS) of mixed metal oxide thin films demonstrated a lower charge transfer resistance as compared to the pure NiO, CuO, and Cr2O3 thin films.

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Synergistic impact of Ni–Cu hybrid oxides deposited on ordered mesoporous carbon scaffolds as non-noble catalyst for methanol oxidation

Cited by 21 publications

References 57 publications

Metal-Organic Framework Mediated Ni-deposition on MWCNTs for Direct Methanol Fuel Cell Catalysis

Metal-Organic Framework Mediated Ni-deposition on MWCNTs for Direct Methanol Fuel Cell Catalysis

Fabrication and characterization of NiCu/GO and NiCu/rGO nanocomposites for fuel cell application

Fabrication of Metal (Cu and Cr) Incorporated Nickel Oxide Films for Electrochemical Oxidation of Methanol

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