4.8 Article

Identification and manipulation of dynamic active site deficiency-induced competing reactions in electrocatalytic oxidation processes

Related references

Note: Only part of the references are listed.
Article Chemistry, Multidisciplinary

Unveiling the Electrooxidation of Urea: Intramolecular Coupling of the N-N Bond

Wei Chen et al.

Summary: This study delves into the crucial role of nitrogenous nucleophile electrooxidation reaction (NOR) in the degradation and transformation of available nitrogen, particularly focusing on the transformation mechanism mediated by the beta-Ni(OH)(2) electrode. The study proposes the role of proton-coupled electron transfer (PCET) in bridging the electrocatalytic dehydrogenation and spontaneous nucleophile dehydrogenative oxidation reaction, with a specific focus on the urea oxidation reaction (UOR). Through both operando tracing and theoretical calculations, a mechanism for UOR involving intramolecular coupling of the N-N bond, accompanied by PCET, hydration, and rearrangement processes, is proposed to achieve high performance and approximately 100% N-2 selectivity. These findings shed light on the evolution of nitrogenous molecules during NOR, as well as fundamental aspects of electrocatalysis involving nitrogen-containing species.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Chemistry, Multidisciplinary

Regulating the Local Charge Distribution of Ni Active Sites for the Urea Oxidation Reaction

Liping Wang et al.

Summary: A tungsten-doped nickel catalyst (Ni-WOx) was developed with superior activity towards the urea oxidation reaction, accelerating the reaction kinetics and increasing the turnover frequency. Experimental results demonstrated that tungsten doping led to the formation of Ni3+ sites with superior activity, facilitating the catalytic reaction.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Chemistry, Multidisciplinary

Deciphering and Suppressing Over-Oxidized Nitrogen in Nickel-Catalyzed Urea Electrolysis

Jianan Li et al.

Summary: Urea electrolysis is a promising technology for simultaneous H-2 production and nitrogen suppression in water energy production. However, prevalent nickel-based catalysts may over-oxidize urea into NO2- products, posing potential environmental hazards. Through experiments and calculations, a nitrogen-fate network was derived, leading to the development of a polyaniline-coating strategy to increase N-2 production. These findings offer insights into nitrogen fate in water-energy systems.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2021)

Article Energy & Fuels

Nickel ferrocyanide as a high-performance urea oxidation electrocatalyst

Shi-Kui Geng et al.

Summary: Researchers have found that the nickel ferrocyanide catalyst can drive the urea oxidation reaction with higher activity and stability. Moreover, the catalyst appears to operate via a different pathway, which facilitates the efficiency of ammonia production.

NATURE ENERGY (2021)

Article Multidisciplinary Sciences

Lattice oxygen activation enabled by high-valence metal sites for enhanced water oxidation

Ning Zhang et al.

NATURE COMMUNICATIONS (2020)

Article Chemistry, Physical

Oxysulfide photocatalyst for visible-light-driven overall water splitting

Qian Wang et al.

NATURE MATERIALS (2019)

Editorial Material Chemistry, Physical

Platinum group metal-free catalysts boost cost competitiveness of fuel cell vehicles

Simon T. Thompson et al.

NATURE CATALYSIS (2019)

Article Chemistry, Multidisciplinary

A Lattice-Oxygen-Involved Reaction Pathway to Boost Urea Oxidation

Longsheng Zhang et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2019)

Article Chemistry, Physical

Ni-foam supported Co(OH)F and Co-P nanoarrays for energy-efficient hydrogen production via urea electrolysis

Min Song et al.

JOURNAL OF MATERIALS CHEMISTRY A (2019)

Article Chemistry, Multidisciplinary

Atomic interface effect of a single atom copper catalyst for enhanced oxygen reduction reactions

Zhuoli Jiang et al.

ENERGY & ENVIRONMENTAL SCIENCE (2019)

Article Chemistry, Multidisciplinary

Highly Branched Metal Alloy Networks with Superior Activities for the Methanol Oxidation Reaction

Xun Cui et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2017)

Article Chemistry, Physical

Nanostructured LaNiO3 Perovskite Electrocatalyst for Enhanced Urea Oxidation

Robin P. Forslund et al.

ACS CATALYSIS (2016)

Article Chemistry, Multidisciplinary

Theoretical Investigation of the Activity of Cobalt Oxides for the Electrochemical Oxidation of Water

Michal Bajdich et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2013)

Article Instruments & Instrumentation

ATHENA, ARTEMIS, HEPHAESTUS:: data analysis for X-ray absorption spectroscopy using IFEFFIT

B Ravel et al.

JOURNAL OF SYNCHROTRON RADIATION (2005)

Article Chemistry, Physical

Origin of the overpotential for oxygen reduction at a fuel-cell cathode

JK Norskov et al.

JOURNAL OF PHYSICAL CHEMISTRY B (2004)