Revealing the Mechanism of Exciton Spontaneous Separation at Room Temperature for Efficient Photocatalytic Hydrogen Peroxide Synthesis DOI Creative Commons
Pan Jiang, Yuyan Huang,

Xiangqiong Jiang

et al.

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: May 19, 2025

Abstract The photocatalytic synthesis of hydrogen peroxide (H 2 O ) at room temperature has garnered significant attention as an environmentally friendly alternative to traditional anthraquinone oxidation processes. However, the low exciton dissociation efficiency often hinders performance. In this study, it is demonstrated that tuning substitution sites electron donors in Donor‐Acceptor (D‐A) conjugated polymers can significantly enhance by reducing activation energy, which facilitates spontaneous separation excitons temperature. For comparison, materials with energies ≈89 meV exhibit a production rate 2692 µmol·g −1 ·h . contrast, main material developed work, O‐PTAQ, demonstrates substantially lower energy 22 meV, resulting 4989 under ambient conditions, outperforming most reported organic semiconductors. This enhancement attributed increased delocalization donors, lowers promote efficient separation. findings highlight critical role molecular‐level structural enhancing dissociation, providing promising strategy for development high‐efficiency photocatalysts sustainable H production.

Language: Английский

Revealing the Mechanism of Exciton Spontaneous Separation at Room Temperature for Efficient Photocatalytic Hydrogen Peroxide Synthesis DOI Creative Commons
Pan Jiang, Yuyan Huang,

Xiangqiong Jiang

et al.

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: May 19, 2025

Abstract The photocatalytic synthesis of hydrogen peroxide (H 2 O ) at room temperature has garnered significant attention as an environmentally friendly alternative to traditional anthraquinone oxidation processes. However, the low exciton dissociation efficiency often hinders performance. In this study, it is demonstrated that tuning substitution sites electron donors in Donor‐Acceptor (D‐A) conjugated polymers can significantly enhance by reducing activation energy, which facilitates spontaneous separation excitons temperature. For comparison, materials with energies ≈89 meV exhibit a production rate 2692 µmol·g −1 ·h . contrast, main material developed work, O‐PTAQ, demonstrates substantially lower energy 22 meV, resulting 4989 under ambient conditions, outperforming most reported organic semiconductors. This enhancement attributed increased delocalization donors, lowers promote efficient separation. findings highlight critical role molecular‐level structural enhancing dissociation, providing promising strategy for development high‐efficiency photocatalysts sustainable H production.

Language: Английский

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