Cu-MOF@Co-MOF derived Co–Cu alloy nanoparticles and N atoms co-doped carbon matrix as efficient catalyst for enhanced oxygen reduction

Zhou, Yali; Tang, Bing; Wang, Senkang; Long, Jilan

doi:10.1016/j.ijhydene.2020.04.049

Cited by 34 publications

(9 citation statements)

References 47 publications

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“…12 Oxygen reduction reaction (ORR) indicated that better catalytic performance could be achieved by MOF derivatives than by precious metal Pt/C catalysts. 13 Besides, the metal ions and organic ligands in MOFs are linked by coordination bonds and these relatively weak chemical bonds may break under proper conditions. 14−17 This property can promote the continuous release of metal ions in MOFs to the environment, which provides a prerequisite for the preparation of metal nanoparticles in liquid-phase systems with MOFs as metal sources.…”

Section: Introductionmentioning

confidence: 99%

“…Calcination of MOFs to obtain carbon- and nitrogen-doped metal nanoparticles is the classic preparation method for MOF derivatives. , The MOF-derived nanoparticles by calcination still have a porous structure and exhibit high electrical conductivity with excellent electron transport behavior due to the doping of nitrogen atoms, which could promote electrocatalysis . Oxygen reduction reaction (ORR) indicated that better catalytic performance could be achieved by MOF derivatives than by precious metal Pt/C catalysts . Besides, the metal ions and organic ligands in MOFs are linked by coordination bonds and these relatively weak chemical bonds may break under proper conditions. − This property can promote the continuous release of metal ions in MOFs to the environment, which provides a prerequisite for the preparation of metal nanoparticles in liquid-phase systems with MOFs as metal sources.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Catalytic Performance of a Membrane Microreactor by Immobilizing ZIF-8-Derived Nano-Ag via Ion Exchange

Chen

Fan

Qiu

et al. 2020

Ind. Eng. Chem. Res.

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A catalytic membrane microreactor (CMMR) was fabricated by immobilizing ZIF-8-derived nano-Ag in membrane pores via ion exchange. ZIF-8 was first in situ assembled in polyethersulfone (PES) membrane pores with polydopamine modification. The Zn–N bond disappeared and Ag–N bond appeared after ion exchange by a AgNO3 solution. Besides, the X-ray diffraction (XRD) characteristic peaks of ZIF-8 transformed into those of the Ag–MI coordination compounds. The Ag–N bond disappeared and the characteristic peaks of Ag appeared after reduction by a NaBH4 solution. It could be observed by transmission electron microscopy (TEM) that the size of nano-Ag was 4.55 ± 1.67 nm, which was one-fifth of that without ZIF-8 as a precursor. The inductively coupled plasma emission spectroscopy (ICP-OES) test revealed that the loading capacity of nano-Ag in PES membrane pores was 31.33%. The degradation of p-nitrophenol (p-NP) was applied to test the catalytic performance of the CMMR, and the apparent reaction rate constant could be increased by 2 orders of magnitude.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhanced Catalytic Performance of a Membrane Microreactor by Immobilizing ZIF-8-Derived Nano-Ag via Ion Exchange

Chen

Fan

Qiu

et al. 2020

Ind. Eng. Chem. Res.

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“…The binary/ternary alloy nanostructures based on Ni, Co, Fe, Mn, etc., are also known to catalyze ORR and OER in alkaline pH and have been successfully utilized for ZAB applications. − For instance, Zhao et al demonstrated the ORR activity and the PZAB performance of a two-dimensional leaflike CoFe bimetallic alloy electrocatalyst derived from a ZIF precursor . Although the ORR limiting current density is less than 6 mA/cm 2 at 1600 rpm, a specific capacity >800 mAh g –1 Zn is claimed .…”

Section: Emerging Non-pt Electrocatalysts For Orr and Pzabmentioning

confidence: 99%

“…However, PZAB showed a stable discharge performance at different current densities (Figure ). In a recent study, the ORR activity of Co–Cu alloy nanoparticle encapsulated inside nitrogen-doped carbon synthesized by the pyrolysis of Cu-MOF@Co-MOF is demonstrated . The authors showed that the ORR activity of the alloy catalyst originates from the synergistic effect between the alloy nanoparticle and the heteroatom.…”

Section: Emerging Non-pt Electrocatalysts For Orr and Pzabmentioning

confidence: 99%

“…In a recent study, the ORR activity of Co−Cu alloy nanoparticle encapsulated inside nitrogen-doped carbon synthesized by the pyrolysis of Cu-MOF@Co-MOF is demonstrated. 38 The authors showed that the ORR activity of the alloy catalyst originates from the synergistic effect between the alloy nanoparticle and the heteroatom. Although the involvement of the metal active site is demonstrated with an acid-treated catalyst, the contribution of the alloy or the role of the metal/nitrogen is not known.…”

Section: Emerging Non-pt Electrocatalysts Formentioning

confidence: 99%

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Advanced Oxygen Electrocatalyst for Air-Breathing Electrode in Zn-Air Batteries

Kundu

Mallick

Ghora

et al. 2021

ACS Appl. Mater. Interfaces

123

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The electrochemical reduction of oxygen to water and the evolution of oxygen from water are two important electrode reactions extensively studied for the development of electrochemical energy conversion and storage technologies based on oxygen electrocatalysis. The development of an inexpensive, highly active, and durable nonprecious-metal-based oxygen electrocatalyst is indispensable for emerging energy technologies, including anion exchange membrane fuel cells, metal-air batteries (MABs), water electrolyzers, etc. The activity of an oxygen electrocatalyst largely decides the overall energy storage performance of these devices. Although the catalytic activities of Pt and Ru/Ir-based catalysts toward an oxygen reduction reaction (ORR) and an oxygen evolution reaction (OER) are known, the high cost and lack of durability limit their extensive use for practical applications. This review article highlights the oxygen electrocatalytic activity of the emerging non-Pt and non-Ru/Ir oxygen electrocatalysts including transition-metal-based random alloys, intermetallics, metal-coordinated nitrogen-doped carbon (M–N–C), and transition metal phosphides, nitrides, etc., for the development of an air-breathing electrode for aqueous primary and secondary zinc-air batteries (ZABs). Rational surface and chemical engineering of these electrocatalysts is required to achieve the desired oxygen electrocatalytic activity. The surface engineering increases the number of active sites, whereas the chemical engineering enhances the intrinsic activity of the catalyst. The encapsulation or integration of the active catalyst with undoped or heteroatom-doped carbon nanostructures affords an enhanced durability to the active catalyst. In many cases, the synergistic effect between the heteroatom-doped carbon matrix and the active catalyst plays an important role in controlling the catalytic activity. The ORR activity of these catalysts is evaluated in terms of onset potential, number of electrons transferred, limiting current density, and durability. The bifunctional oxygen electrocatalytic activity and ZAB performance, on the other hand, are measured in terms of potential gap between the ORR and OER, ΔE = E j10 OER – E 1/2 ORR, specific capacity, peak power density, open circuit voltage, voltaic efficiency, and charge–discharge cycling stability. The nonprecious metal electrocatalyst-based ZABs are very promising and they deliver high power density, specific capacity, and round-trip efficiency. The active site for oxygen electrocatalysis and challenges associated with carbon support is briefly addressed. Despite the considerable progress made with the emerging electrocatalysts in recent years, several issues are yet to be addressed to achieve the commercial potential of rechargeable ZAB for practical applications.

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Tuning the functionality of metal–organic frameworks (MOFs) for fuel cells and hydrogen storage applications

Wong

Sudarsono

et al. 2023

J Mater Sci

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Cu-MOF@Co-MOF derived Co–Cu alloy nanoparticles and N atoms co-doped carbon matrix as efficient catalyst for enhanced oxygen reduction

Cited by 34 publications

References 47 publications

Enhanced Catalytic Performance of a Membrane Microreactor by Immobilizing ZIF-8-Derived Nano-Ag via Ion Exchange

Enhanced Catalytic Performance of a Membrane Microreactor by Immobilizing ZIF-8-Derived Nano-Ag via Ion Exchange

Advanced Oxygen Electrocatalyst for Air-Breathing Electrode in Zn-Air Batteries

Tuning the functionality of metal–organic frameworks (MOFs) for fuel cells and hydrogen storage applications

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