Bioinspired Oxygen-Evolution Reaction: Achieving Oxygen-Evolution Reaction on Layered Manganese-Oxide Surface with Extremely Low Overpotential

ACS Applied Energy Materials, Journal Year: 2024, Volume and Issue: 7(21), P. 10081 - 10091

Published: Oct. 24, 2024

Despite the common belief that manganese (hydr)oxides in absence of other metal ions require high overpotential to catalyze oxygen-evolution reaction (OER) alkaline conditions, our study has uncovered surprising results. Layered oxide demonstrates noteworthy OER activity at Mn(III) Mn(IV) oxidation peak following charge accumulation. This is achieved with remarkably low (120 mV) a 1.0 M KOH solution. Initially, Faraday efficiency modest 20%, which can be attributed initial storage. However, as continues (200 s), significantly increases over 80%. We also propose detailed mechanism for this low-overpotential regime, supported by situ visible and Raman spectroscopies surrounding region. By examining amount oxygen generated concentrations redox-active Mn near redox peak, turnover frequency 3.8 × 10–3 s–1 1.35 V was calculated. The reduced observed during complex interplay between process accumulation it nature, these factors collectively enabling notably overpotential. These findings provide significant insights design development highly efficient stable electrocatalysts water-splitting applications, potentially revolutionizing approaches energy conversion Our have implications applications.

Language: Английский

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Photoreforming of Plastic Waste to Sustainable Fuels and Chemicals: Waste to Energy

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 17, 2024

The extensive accumulation of plastic waste has given rise to severe environmental pollution issues. Contemporary conventional recycling methods, such as incineration and landfilling, contribute significantly pollutant emissions carbon footprints, against the principles sustainable development. Leveraging renewable solar energy transform plastics into high-value chemicals green fuels offers a more promising approach managing resources. This comprehensive review centers on recent advancements in photoreforming, categorizing them based types end products. Particular emphasis is placed evolving research landscape surrounding conversion through well economic considerations for large-scale photoreforming production. analysis conducted here reveals key pathways emerging trends that are poised shape trajectory enhanced photoconversion, ultimately influencing realization carbon-neutral future.

Language: Английский

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Layered double hydroxide modified bismuth vanadate as an efficient photoanode for enhancing photoelectrochemical water splitting

Materials Horizons, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

This review highlights the functions of layered double hydroxide-modified bismuth vanadate photoanodes in solar water splitting. Future outlook on photoanode is also summarized.

Language: Английский

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Prussian blue analog derived carbon-rich FeS2@CoS2 nano composites as bifunctional electrocatalyst for water splitting

Materials Science in Semiconductor Processing, Journal Year: 2025, Volume and Issue: 189, P. 109287 - 109287

Published: Jan. 15, 2025

Language: Английский

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Interface-induced Fe-rich NixFe3-xO4 electrode for efficient oxygen evolution at high current densities

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160173 - 160173

Published: Feb. 1, 2025

Language: Английский

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