Cu(OH)2-Ni(OH)2 engulfed by zeolite-Y hydroxyl nest and multiwalled carbon nanotube for effective methanol oxidation reaction

Hoque, Nazimul; Baruah, Manash J.; Lee, Seonghwan; Park, Hyung Wook; Dutta, Rupjyoti; Roy, Subhasish; Bania, Kusum K.

doi:10.1016/j.electacta.2021.139313

Cited by 22 publications

(54 citation statements)

References 103 publications

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“…Although the DMFC technology has able to attract the eyes of the scientific community buts its commercialization is restricted by certain challenges involve in the methanol oxidation process. Among which the CO poisoning, methanol tolerance, slow kinetics, need of metal catalyst with high cost like Pt and Pd are major problems associated with methanol oxidation reaction (MOR) [22–24] …”

Section: Introductionmentioning

confidence: 99%

“…The electrocatalytic oxidation of methanol can be carried out in both alkaline and acidic media [25,26] . The recent studies however have provided an understanding that the MOR process is beneficial in alkaline media with faster kinetics, less poisoning and corrosion effect [24,27] . So far different metal catalysts have been employed for MOR, but the success to overcome the activity more than that of platinum (Pt) and palladium (Pd) based catalyst is still under study.…”

Section: Introductionmentioning

confidence: 99%

“…Pt‐based catalysts have certain drawbacks like high cost, abundance, and low CO tolerance capability [28] . The increasing price in Pt and Pd have therefore pushed the researchers to explore electrocatalytically active materials of other non‐noble transition metals that can show activity comparable to those of Pt and Pd [24,29,30] . Apart from Pt and Pd, Rh also shows excellent MOR activity in alkaline solution [31–33] .…”

Section: Introductionmentioning

confidence: 99%

“…Apart from Pt and Pd, Rh also shows excellent MOR activity in alkaline solution [31–33] . Very recently we reported Cu(OH) 2 −Ni(OH) 2 ‐Y/MWCNT and RhO x −Ni(OH) 2 ‐Y/rGO catalysts to be an effective catalyst for MOR [24,34] . Among many other metals, the electrocatalyst of Ni are studied extensively for MOR and for H 2 ‐fuel production [24,29,30] .…”

Section: Introductionmentioning

confidence: 99%

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Dual Matrix Influence on Ni(II) Rich Hybrid Catalyst for Electrochemical Methanol Oxidation Reaction

et al. 2022

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The influence of two different surface matrices, that is, zeolite‐Y and multi‐walled carbon nanotubes (MWCNTs), on the electrocatalytic ability of Ni(OH)2 combined with MnO2 has been studied. The Ni and Mn loaded in different ratio exhibited different current density with respect to the change in the nature of support. The MnO2−Ni(OH)2 catalyst decorated like a fish in a net‐stock at the interface of the zeolite‐Y and the MWCNT with high Ni(II) content provided the highest current density of 3.8 Amg−1 and 3.6 Amg−1 with platinum and graphitic rod as counter electrode, respectively. The study revealed that both the concentration of the Ni(II) as well as the nature of the support influenced the electrochemical behaviour of MnO2−Ni(OH)2. The electrochemical surface area as well as the durability of the catalyst having two different supports showed higher values in comparison to those in single matrix. The plot of current density vs. square root of scan rate showed diffusion control methanol oxidation process. The results predicted that the MnO2−Ni(OH)2 catalyst containing both zeolite‐Y and MWCNT surface indicated that under the highly basic condition it can withstand for long period without significant loss in current density during the methanol oxidation reaction process.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dual Matrix Influence on Ni(II) Rich Hybrid Catalyst for Electrochemical Methanol Oxidation Reaction

et al. 2022

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“…[5][6][7][8][9] However, the high cost, CO self-poisoning effect, and slow MOR kinetics of PGMs still remain as unsolved dilemmas, hindering their practical applications. 10,11 Great efforts have been devoted to seeking substitutable non-PGM electrocatalysts as efficient anode materials for the MOR. 12 Alternatively, Ni-based catalysts have been considered as promising candidates under alkaline conditions owing to their relatively low onset potentials, cheap prices, and high abundance in the Earth's crust.…”

Section: Introductionmentioning

confidence: 99%

l-Lysine derived fabrication of Cu@Ni core–satellite nanoassemblies as efficient non-Pt catalysts for the methanol oxidation reaction

et al. 2022

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May PdCu@f‐MWCNT NPs be an ecotoxicologic risk?

Alak

Yeltekin

Köktürk

et al. 2023

Applied Organom Chemis

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The mechanisms of various metal nanoparticles (NPs) are still a matter of debate in aquatic toxicology. In order to close this gap, the number of studies on this subject is increasing. The aims of this study are to explore the interactions of PdCu@f-MWCNT NPs with zebrafish and get to know if it has an ecotoxicological risk. In this study, we synthesized, characterized PdCu@f-MWCNT NPs, and investigated its ecotoxicological effects. The chemical and morphological structures of PdCu@f-MWCNT nanomaterials were elucidated with advanced analysis techniques such as scanning electron microscope (SEM), X-ray spectrophotometer (EDX), transmission electron microscope (TEM), and X-ray diffraction (XRD) analyses. The ecotoxicological risks were investigated by conducting biochemical analyses and malformation defects in zebrafish. The results were obtained using multiple marker applications including oxidative stress parameters, proinflammatory cytokine expressions, DNA damage, and apoptosis markers. The obtained findings showed embryonic development, survival rate, and incidence of malformation increasing in parallel with the dose increase in zebrafish exposed to PdCu@f-MWCNT NPs at 10-1000 μg/L levels. Despite the observed decreases in antioxidant enzyme activities, GSH level, AChE activity, and NRF-2 level, inductions in malondialdehyde (MDA) level, IL-6, TNF-α, NF-kB, DNA damage, and apoptosis levels were observed with increasing dose. Considering these findings, it has been determined that there are toxic effects in zebrafish at all levels above the concentration that we examine as a safe dose (10 μg/L). The effects of all studied concentrations of this NP above the safe dosage, especially on oxidative stress, malformation, and immune system, were found to be quite significant. The more widespread use of nanotechnology in the future will mean more contact of aquatic organisms with NPs. As a result, it is clearly seen that these organisms, which form the important link of the food chain, and the aquatic environment are living at risk conditions.

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Cu(OH)2-Ni(OH)2 engulfed by zeolite-Y hydroxyl nest and multiwalled carbon nanotube for effective methanol oxidation reaction

Cited by 22 publications

References 103 publications

Dual Matrix Influence on Ni(II) Rich Hybrid Catalyst for Electrochemical Methanol Oxidation Reaction

Dual Matrix Influence on Ni(II) Rich Hybrid Catalyst for Electrochemical Methanol Oxidation Reaction

l-Lysine derived fabrication of Cu@Ni core–satellite nanoassemblies as efficient non-Pt catalysts for the methanol oxidation reaction

May PdCu@f‐MWCNT NPs be an ecotoxicologic risk?

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