Stability of photoelectrochemical cells based on colloidal quantum dots

Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

This review gives systematic analysis of degradation reasons QD-based PEC cell and strategies improving stability from aspects including band structure, shapes, ligands QDs, QDs’ matrix, co-catalysts, encapsulation counter-electrodes.

Language: Английский

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Surface Engineered BiVO₄ for Photoelectrochemical Alkene Epoxidation via Bromine Mediation

ACS Energy Letters, Journal Year: 2025, Volume and Issue: unknown, P. 2026 - 2034

Published: March 31, 2025

Language: Английский

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Photoelectrochemical comproportionation of pre-treated PET plastics and CO₂ to formate

Energy & Environmental Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Pairing plastic waste reforming and carbon dioxide (CO2) utilisation to produce chemical energy carriers provides an attractive means mitigate create value, but challenges persist in achieving selective product formation, separation overall device integration. Herein, we present organic-inorganic photoelectrochemical (PEC) tandem that enables the solar-powered comproportionation of CO2 into a single product, formate. The hematite photoanode achieves continuous oxidation alkaline pre-treated polyethylene terephthalate (PET) plastics formate, while organic semiconductor photocathode coupled biocatalyst photoreduction formate under neutral pH conditions. integrated PEC operates without external voltage input achieve simultaneous reduction, leading near-200% Faradaic efficiency average production rate 11 μmol cm-2 h-1 for 10 h simulated AM1.5G irradiation at room temperature. This work introduces strategy visible-light promoted processing two distinct streams thereby enhancing formation rates, reducing limitations arising from advancing efforts toward sustainable circular industry.

Language: Английский

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Photoelectrocatalytic activation of C–H bond in toluene by titanium dioxide‐supported sub‐nanometric PtO x clusters

Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown

Published: May 5, 2025

Selective oxidation of C(sp3)─H bonds via photoelectrocatalytic (PEC) strategy provides a promising approach to synthesize valuable oxygenates, but the efficiency this process is still unsatisfactory due stable nature hydrocarbon molecules. Herein, we report PEC toluene benzaldehyde (BA) over subnanometric PtOx cluster-loaded TiO2 (PtOx/TiO2) photoanode, achieving BA production rate 1.75 µmol cm‒2 h‒1 with selectivity 83.5% in aqueous medium, which 4.4-fold higher than that pristine TiO2. The also effective for selective derivatives. As proof-of-concept, fabricate self-powered tandem device S-shaped flow channels toluene, producing productivity ∼170 under light irradiation. Experimental studies combined density functional theory (DFT) results demonstrate PtOx/TiO2 photoanode follow an electrophilic hydroxyl species (OH*)-mediated pathway, can suppress over-oxidation BA. Moreover, reveal clusters promote adsorption and OH* generation, leading high oxidation. This work expected broaden avenue toward activation bond mild conditions solution sustainable way.

Language: Английский

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Highly selective photoreforming of plastic waste into pyruvate and coupled with hydrogen production from seawater on the defect-rich 2D/2D Cd0.5Zn0.5S/NiPS3

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 117199 - 117199

Published: May 1, 2025

Language: Английский

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