CuCr Bimetallic Catalyst for Selective Electrooxidation of Ammonia at Room Temperature

Cleetus, Annie; Teller, Hanan; Schechter, Alex

doi:10.1002/cctc.202300035

Cited by 5 publications

(2 citation statements)

References 41 publications

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“…Obviously, GO had a sharp diffraction peak at 11.6°, which corresponds to its typical (001) crystal plane [ 32 ]. As for Cu 2 O@rGO nanoparticles, some characteristic peaks at 29.7°, 36.5°, 42.4°, 61.4°, and 73.6° were observed, which were attributed to the (110), (111), (200), (220), and (311) crystal planes of Cu 2 O, respectively [ 33 ]. The diffraction peak of rGO could not be found, which might be due to the fact that the insertion of Cu 2 O led to a decrease in the interlayer spacing of graphite and prevented GO re-accumulation [ 34 ].…”

Section: Resultsmentioning

confidence: 99%

A Photochemically Active Cu2O Nanoparticle Endows Scaffolds with Good Antibacterial Performance by Efficiently Generating Reactive Oxygen Species

He,

Zan,

et al. 2024

Nanomaterials

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Cuprous oxide (Cu2O) has great potential in photodynamic therapy for implant-associated infections due to its good biocompatibility and photoelectric properties. Nevertheless, the rapid recombination of electrons and holes weakens its photodynamic antibacterial effect. In this work, a new nanosystem (Cu2O@rGO) with excellent photodynamic performance was designed via the in situ growth of Cu2O on reduced graphene oxide (rGO). Specifically, rGO with lower Fermi levels served as an electron trap to capture photoexcited electrons from Cu2O, thereby promoting electron-hole separation. More importantly, the surface of rGO could quickly transfer electrons from Cu2O owing to its excellent conductivity, thus efficiently suppressing the recombination of electron-hole pairs. Subsequently, the Cu2O@rGO nanoparticle was introduced into poly-L-lactic acid (PLLA) powder to prepare PLLA/Cu2O@rGO porous scaffolds through selective laser sintering. Photochemical analysis showed that the photocurrent of Cu2O@rGO increased by about two times after the incorporation of GO nanosheets, thus enhancing the efficiency of photogenerated charge carriers and promoting electron-hole separation. Moreover, the ROS production of the PLLA/Cu2O@rGO scaffold was significantly increased by about two times as compared with that of the PLLA/Cu2O scaffold. The antibacterial results showed that PLLA/Cu2O@rGO possessed antibacterial rates of 83.7% and 81.3% against Escherichia coli and Staphylococcus aureus, respectively. In summary, this work provides an effective strategy for combating implant-related infections.

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Section: Resultsmentioning

confidence: 99%

A Photochemically Active Cu2O Nanoparticle Endows Scaffolds with Good Antibacterial Performance by Efficiently Generating Reactive Oxygen Species

He,

Zan,

et al. 2024

Nanomaterials

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“…This modification leads to the generation and exposure of a greater number of real active species on the electrode surface, thereby creating favorable ammonia adsorption sites. In addition to NiCu, other alloys, such as CuCr and CuCo, also have the synergistic functions. Moreover, the reaction selectivity can be adjusted via tuning the composition of the alloy.…”

Section: Catalystsmentioning

confidence: 99%

Minireview on the Electrocatalytic Ammonia Oxidation Reaction for Hydrogen Production and Sewage Treatment

Liu,

Xu,

Guan

et al. 2023

Energy Fuels

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Ammonia electrolysis represents an advanced and promising approach for both hydrogen production and sewage treatment. Nevertheless, they confront a significant obstacle in the form of the electrocatalytic ammonia oxidation reaction (AOR), mainly attributable to the sluggish reaction kinetics. This minireview comprehensively discusses the intricate mechanisms and critical parameters that govern the AOR for hydrogen production and sewage treatment. Various influential factors, including pH levels, voltage, and temperature, are systematically discussed, shedding light on their vital roles in modulating the AOR. Additionally, catalysts, such as pure metals, alloys, metal hydroxides, and metal oxides, are comprehensively reviewed, with the goal of elevating the efficiency of ammonia electrooxidation. On the basis of current research, prospects of electrolyte optimizations and catalyst improvements are systematically discussed.

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A perspective into recent progress on the tailored cationic group-based polymeric anion exchange membranes intended for electrochemical energy applications

Thomas,

Thomas

et al. 2024

Materials Today Chemistry

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CuCr Bimetallic Catalyst for Selective Electrooxidation of Ammonia at Room Temperature

Cited by 5 publications

References 41 publications

A Photochemically Active Cu2O Nanoparticle Endows Scaffolds with Good Antibacterial Performance by Efficiently Generating Reactive Oxygen Species

A Photochemically Active Cu2O Nanoparticle Endows Scaffolds with Good Antibacterial Performance by Efficiently Generating Reactive Oxygen Species

Minireview on the Electrocatalytic Ammonia Oxidation Reaction for Hydrogen Production and Sewage Treatment

A perspective into recent progress on the tailored cationic group-based polymeric anion exchange membranes intended for electrochemical energy applications

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