H2 production by solar photoreforming of plastic materials using SiC-g-C3N4composites

Iapichino, Maria Teresa Armeli; Fiorenza, Roberto; Patamia, Vincenzo; Floresta, Giuseppe; Gulino, Antonino; Condorelli, Marcello; Impellizzeri, Giuliana; Compagnini, Giuseppe; Sciré, Salvatore

doi:10.1016/j.catcom.2024.106850

“…This is in line with previous findings. [87,91,115,158,159] According to the proposed mechanisms (Figure 5d), the EG of PET is oxidized to glycoaldehyde, subsequently forming glyoxal, glycolate, glyoxylate, oxalate, formate, and finally CO 3 2-, while the lactate of PLA is oxidized to formate, acetate, and other unidentified products. [50] The system continued to operate after 8 days, suggesting that larger H 2 conversion could be achieved over longer periods of time.…”

Section: Progress Of Photocatalyst Designmentioning

confidence: 99%

From Plastic Waste to Green Hydrogen and Valuable Chemicals Using Sunlight and Water

Anh Nguyen,

Trần‐Phú,

Daiyan

et al. 2024

Angewandte Chemie

0

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Over 79% of 6.3 billion tonnes of plastics produced from 1950 to 2015 have been disposed in lanfills or found their way to the oceans, where they will reside for up to hundreds of years before being decomposed bringing upon significant dangers to our health and ecosystems. Plastic photoreforming offers an appealing alternative by using solar energy and water to transform plastic waste into value‐added chemical commodities, while simultaneously producing green hydrogen via the hydrogen evolution reaction. This review aims to provide an overview of the underlying principles of emerging plastic photoreforming technologies, highlight the challenges associated with experimental protocols and performance assessments, discuss recent global breakthroughs on the photoreforming of plastics, and propose perspectives for future research. A critical assessment of current plastic photoreforming studies shows a lack of standardised conditions, hindering comparison amongst photocatalyst performance. Guidelines to establish a more accurate evaluation of materials and systems are proposed with the aim to facilitate the translation of promising fundamental discovery in photocatalysts design.

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From Plastic Waste to Green Hydrogen and Valuable Chemicals Using Sunlight and Water

Anh Nguyen,

Trần‐Phú,

Daiyan

et al. 2024

Angew Chem Int Ed

1

0

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Over 79% of 6.3 billion tonnes of plastics produced from 1950 to 2015 have been disposed in lanfills or found their way to the oceans, where they will reside for up to hundreds of years before being decomposed bringing upon significant dangers to our health and ecosystems. Plastic photoreforming offers an appealing alternative by using solar energy and water to transform plastic waste into value‐added chemical commodities, while simultaneously producing green hydrogen via the hydrogen evolution reaction. This review aims to provide an overview of the underlying principles of emerging plastic photoreforming technologies, highlight the challenges associated with experimental protocols and performance assessments, discuss recent global breakthroughs on the photoreforming of plastics, and propose perspectives for future research. A critical assessment of current plastic photoreforming studies shows a lack of standardised conditions, hindering comparison amongst photocatalyst performance. Guidelines to establish a more accurate evaluation of materials and systems are proposed with the aim to facilitate the translation of promising fundamental discovery in photocatalysts design.

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Gas‐Phase Photocatalytic Coprocessing of CO₂ – H₂O_(v) to Energy Products Promoted by the n,n‐Junction In₂O₃@g‐C₃N₄ under VIS‐Light

Baran,

Aresta,

Comparelli

et al. 2024

ChemSusChem

0

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Carbon dioxide capture and utilization is a strategic technology for moving away from fossil‐C. The conversion of CO2 into fuels demands energy and hydrogen that cannot be sourced from fossil‐C. Co‐processing of CO2 and water under solar irradiation will have a key role in the long‐term for carbon‐recycling and energy products production. This article discusses the synthesis, characterization and application of the two‐phase composite photocatalyst, In2O3@g‐C3N4, formed by thermal condensation of melamine in the presence of indium(III)nitrate. The composite exhibits a n,n‐heterojunction between two n‐type semiconductors, g‐C3N4 and In2O3, leading to a more efficient charge separation. The composite has a flat band potential enabling it to effectively catalyze the reduction of CO2 in the gas phase to produce CO, CH4 and CH3OH. While the composite's overall photocatalytic efficiency is comparable to that of neat g‐C3N4, its ability to promote multielectron‐transfer and Proton Coupled to Electron Transfer (PCET) suggests that there is a potential for further optimization of its properties. The use of labelled 13CO2 has allowed us to clearly exclude that the reduced species are derived from the photocatalyst decomposition or the degradation of contaminants.

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H2 production by solar photoreforming of plastic materials using SiC-g-C3N4composites

Cited by 5 publications

References 66 publications

From Plastic Waste to Green Hydrogen and Valuable Chemicals Using Sunlight and Water

From Plastic Waste to Green Hydrogen and Valuable Chemicals Using Sunlight and Water

From Plastic Waste to Green Hydrogen and Valuable Chemicals Using Sunlight and Water

Gas‐Phase Photocatalytic Coprocessing of CO₂ – H₂O_(v) to Energy Products Promoted by the n,n‐Junction In₂O₃@g‐C₃N₄ under VIS‐Light

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H2 production by solar photoreforming of plastic materials using SiC-g-C3N4composites

Cited by 5 publications

References 66 publications

From Plastic Waste to Green Hydrogen and Valuable Chemicals Using Sunlight and Water

From Plastic Waste to Green Hydrogen and Valuable Chemicals Using Sunlight and Water

From Plastic Waste to Green Hydrogen and Valuable Chemicals Using Sunlight and Water

Gas‐Phase Photocatalytic Coprocessing of CO2 – H2O(v) to Energy Products Promoted by the n,n‐Junction In2O3@g‐C3N4 under VIS‐Light

Contact Info

Product

Resources

About

Gas‐Phase Photocatalytic Coprocessing of CO₂ – H₂O_(v) to Energy Products Promoted by the n,n‐Junction In₂O₃@g‐C₃N₄ under VIS‐Light