Bifunctional transition-metal catalysts for energy-saving hydrogen generation from nitrogenous wastewater

Chemical Communications, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Wastewater from industrial chemical synthesis, agricultural activities, and domestic sewage usually contains high levels of nitrogenous compounds, endangering environmental health human well-being. Nitrogenous wastewater electrolysis (NWE), despite its ecological merits, is inherently hampered by sluggish kinetics. To improve process efficiency, lower costs, avoid cross-contamination between the anode cathode, a range bifunctional transition-metal catalysts capable efficient operation at both electrodes have recently been developed. This review outlines progress in these for energy-saving production hydrogen wastewater, including urea, hydrazine, ammonia. It highlights their dual role degrading pollutants generating energy. The meticulously introduces key performance metrics NWE system surveys latest advancements catalysts, along with catalytic mechanisms. culminates detailed summary comparative analysis representative emphasizing electricity consumption efficiency. Lastly, existing challenges research prospects are thoroughly discussed.

Language: Английский

Rhodium Metallene With Wrinkle‐Induced Lattice Strain for Acetonitrile Electroreduction Related Energy Conversion

Carbon Energy, Journal Year: 2025, Volume and Issue: unknown

Published: April 23, 2025

ABSTRACT Metallene has been widely considered as an advanced electrocatalytic material due to its large specific surface area and highly active reaction sites. Herein, we design synthesize ultrathin rhodium metallene (Rh ML) with abundant wrinkles supply surface‐strained Rh sites for driving acetonitrile electroreduction ethylamine (AER). The electrochemical tests indicate that ML shows yield rate of 137.1 mmol g cat −1 h in acidic solution, stability lasting up 200 h. Theoretical calculations reveal wrinkle‐induced compressive strain not only a lower energy barrier the rate‐determining step but also facilitates desorption process compared wrinkle‐free commercial black. assembled electrolyzer bifunctional electrolysis voltage 0.41 V at 10 mA cm −2 , enabling simultaneous production hydrazine waste treatment. Furthermore, hybrid zinc–acetonitrile battery can effectively drive this achieve dual AER process. This study provides guidance improving catalytic efficiency atoms two‐dimensional materials, well synthesis technology series‐connected battery–electrolyzer systems.

Language: Английский

Heterogeneous Engineering of Ni–Co–S Nanosheets for Efficient Urea Electrolysis

The Journal of Physical Chemistry C, Journal Year: 2025, Volume and Issue: unknown

Published: April 24, 2025

Language: Английский