Highly active and stable bimetallic Ir/Fe-USY catalysts for direct and NO-assisted N2O decomposition

Shen, Qun; Li, Landong; Hao, Zhixin; Xu, Zhi Ping

doi:10.1016/j.apcatb.2008.05.026

Cited by 26 publications

(2 citation statements)

References 34 publications

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“…Ir as one kind of transition metal is rich in d-orbital electrons. When combined with Ni, the d band center of Ir will be raised and the transmission efficiency of electrons can be improved [47,48]. In addition, the Ni contained in the bimetallic IrNi provides united active sites via weak interaction with NiCo2O4.…”

Section: Resultsmentioning

confidence: 99%

IrNi nanoparticle-decorated flower-shaped NiCo2O4 nanostructures: controllable synthesis and enhanced electrochemical activity for oxygen evolution reaction

et al. 2016

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In this work, we demonstrated the enhanced oxygen evolution reaction (OER) activity of flower-shaped cobalt-nickel oxide (NiCo2O4) decorated with iridium-nickel bimetal as an electrode material. The samples were prepared by carefully depositing pre-synthesized IrNi nanoparticles on the surfaces of the NiCo2O4 nano-flowers. Compared with bare NiCo2O4, IrNi, and IrNi/Co3O4, the IrNi/NiCo2O4 exhibited significantly enhanced electrocatalytic activity in the OER, including a lower overpotential of 210 mV and a higher current density at an overpotential of 540 mV. We found that the IrNi/NiCo2O4 showed more efficient electron transport behavior and reduced polarization because of its bimetal IrNi modification by analyzing its Tafel slope and turnover frequency. Furthermore, the electrocatalytic mechanism of IrNi/NiCo2O4 in the OER was studied, and it was found that the combined active sites of the composite effectively improved the rate determining step. The synergic effect of the bimetal and metal oxide plays an important role in this reaction, enhancing the transmission efficiency of electrons and providing more active sites for the OER. The results reveal that IrNi/NiCo2O4 is an excellent electrocatalyst for OER.

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Section: Resultsmentioning

confidence: 99%

IrNi nanoparticle-decorated flower-shaped NiCo2O4 nanostructures: controllable synthesis and enhanced electrochemical activity for oxygen evolution reaction

et al. 2016

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“…Ohnishi et al [31] reported that Ir supported on γ-alumina had high initial activity, while Zhu et al [32] found that Ir-substituted hexaaluminate catalysts demonstrated remarkable performance. Shen et al showed that Ir/Fe-USY-0.1% had high stability for N 2 O decomposition due to the electronic synergy between Ir and Fe sites, as well as the good dispersion of these metals within the zeolite framework [72]. Recently, Hinokuma et al [73] studied the effects of various supports on catalytic N 2 O decomposition reactions.…”

Section: Ir-based Catalystsmentioning

confidence: 99%

Advances in Catalytic Decomposition of N2O by Noble Metal Catalysts

et al. 2023

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Nitrous oxide (N2O) is an environmental pollutant that has a significant greenhouse effect and contributes to the depletion of the ozone layer. To address the issues caused by N2O, direct catalytic decomposition of N2O to N2 and O2 has been demonstrated as one of the most efficient methods for its removal. Various metals, particularly noble metals, including Rh, Ru, Pd, Pt, Au, and Ir, have been widely used and investigated as catalysts to facilitate this transformation. Therefore, this review aims to provide an overview of the advances in noble metal-based catalysts studied in recent years. The comprehensive discussion includes the influence of multiple factors, such as catalyst supports, preparation methods, additives, and impurity gases (such as O2, H2O, SO2, NO, and CO2) on the performance of versatile catalysts. Furthermore, this review offers insights into the future trends of catalyst systems for the direct catalytic decomposition of N2O.

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Non-thermal Plasma Synergizes High-Alkalinity Hydroxyapatite Supported RhFe Bimetallic Catalyst for Direct Catalytic Decomposition of N2O at Low Temperature

et al. 2023

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Highly active and stable bimetallic Ir/Fe-USY catalysts for direct and NO-assisted N2O decomposition

Cited by 26 publications

References 34 publications

IrNi nanoparticle-decorated flower-shaped NiCo2O4 nanostructures: controllable synthesis and enhanced electrochemical activity for oxygen evolution reaction

IrNi nanoparticle-decorated flower-shaped NiCo2O4 nanostructures: controllable synthesis and enhanced electrochemical activity for oxygen evolution reaction

Advances in Catalytic Decomposition of N2O by Noble Metal Catalysts

Non-thermal Plasma Synergizes High-Alkalinity Hydroxyapatite Supported RhFe Bimetallic Catalyst for Direct Catalytic Decomposition of N2O at Low Temperature

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