Graphene-Based Organic Semiconductor Film for Highly Selective Photocatalytic CO2 Reduction DOI Creative Commons

Yanghong Xu,

Haichao Tang, Yifei Wang

et al.

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(9), P. 677 - 677

Published: April 29, 2025

Mimicking artificial photosynthesis utilizing solar energy for the production of high-value chemicals is a sustainable strategy to tackle fossil fuel-based crisis and mitigate greenhouse effect. In this study, we developed two-dimensional (2D) graphene oxide (GO)–diketopyrrolopyrrole (DPP) film photocatalyst. GO nanosheets facilitate uniform dispersion DPP nanoparticles (~5 nm) while simultaneously constructing an efficient charge transport network carrier recombination. Under visible-light irradiation in aqueous solution without sacrificial agents, optimized GO–DPP50 catalyst exhibited exceptional performance, achieving CO rate 32.62 μmol·g⁻1·h⁻1 with nearly 100% selectivity. This represents 2.77-fold 3.28-fold enhancements over pristine (8.65 μmol·g−1·h−1) bare (7.62 μmol·g−1·h−1), respectively. Mechanistic analysis reveals synergistic mechanism. The 2D framework not only serves as high-surface-area substrate anchoring, but also substantially suppresses recombination through rapid electron channels. Concurrently, uniformly distributed improve absorption efficiency effective photogenerated excitation. work establishes novel paradigm integration nanomaterials organic semiconductors, providing critical design principles developing high-performance film-based photocatalysts selectivity control CO2 reduction applications.

Language: Английский

Graphene-Based Organic Semiconductor Film for Highly Selective Photocatalytic CO2 Reduction DOI Creative Commons

Yanghong Xu,

Haichao Tang, Yifei Wang

et al.

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(9), P. 677 - 677

Published: April 29, 2025

Mimicking artificial photosynthesis utilizing solar energy for the production of high-value chemicals is a sustainable strategy to tackle fossil fuel-based crisis and mitigate greenhouse effect. In this study, we developed two-dimensional (2D) graphene oxide (GO)–diketopyrrolopyrrole (DPP) film photocatalyst. GO nanosheets facilitate uniform dispersion DPP nanoparticles (~5 nm) while simultaneously constructing an efficient charge transport network carrier recombination. Under visible-light irradiation in aqueous solution without sacrificial agents, optimized GO–DPP50 catalyst exhibited exceptional performance, achieving CO rate 32.62 μmol·g⁻1·h⁻1 with nearly 100% selectivity. This represents 2.77-fold 3.28-fold enhancements over pristine (8.65 μmol·g−1·h−1) bare (7.62 μmol·g−1·h−1), respectively. Mechanistic analysis reveals synergistic mechanism. The 2D framework not only serves as high-surface-area substrate anchoring, but also substantially suppresses recombination through rapid electron channels. Concurrently, uniformly distributed improve absorption efficiency effective photogenerated excitation. work establishes novel paradigm integration nanomaterials organic semiconductors, providing critical design principles developing high-performance film-based photocatalysts selectivity control CO2 reduction applications.

Language: Английский

Citations

0