Selective Degradation of Polyethylene Terephthalate Plastic Waste Using Iron Salt Photocatalysts DOI

Shaokai Jiang,

Miao Wang, Yahao Huang

et al.

ChemSusChem, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 7, 2024

Abstract Plastic pollution poses a significant challenge to environmental conservation. Efficient recycling of plastic is key strategy address this issue. Polyethylene terephthalate (PET), commonly found in bottles, represents substantial portion waste. Consequently, the efficient degradation and PET crucial for sustainable development society. However, implementation methods depolymerization typically necessitates alkaline/acidic pre‐treatment energy input heating. Here, we propose gentle, highly photocatalysis approach selectively degrading waste into terephthalic acid (TPA) high yield (up 99 %) using cost‐effective iron salts. Notably, method achieved excellent selectivity with TON TOF values, applying oxygen or air as environmentally friendly oxidants. In addition, solvent can be recycled without compromising TPA yield, large‐scale reactions performed smoothly.

Language: Английский

Nitrogenative Degradation of Polystyrene Waste DOI

Ganfei Zeng,

Yanming Su,

Jianwei Jiang

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 8, 2025

Owing to massive production and poor end-of-life management, plastic waste pollution has become one of the most pressing environmental crises. In response mounting crisis, past several decades have witnessed development numerous methods technologies for recycling. However, current recycling often produce low-quality or low-value products, making it difficult recover operating costs. To this end, we report a novel preoxygenation-induced strategy nitrogenative degradation real-life polystyrene plastics into high-value aromatic nitrogen compounds in cost-effective manner. Thus, expensive highly demanding benzonitrile as well benzamide were obtained up 74% overall isolated yield from by using CuBr catalyst, O2 oxidant, CH3CN source. Detailed mechanistic investigations indicate that hydroxyl radicals activation play role selective aerobic process. Furthermore, multiple reaction pathways contribute formation benzamide.

Language: Английский

Citations

3
Photochemical upcycling of polymers via visible light-driven C−H bond activation DOI
Yi Wei, Jing Liu, Xiao‐Qiang Hu

et al.

Chemical Communications, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

This mini-review highlights the scientific breakthroughs in photochemical upcycling polymers through oxidative degradation and post-polymerization modification via visible light-driven C–H bond activation.

Language: Английский

Citations

3
Electrochemical analysis of PET microplastics and detection of elements in PET bottles DOI
Özge Sürücü

Microchemical Journal, Journal Year: 2024, Volume and Issue: 208, P. 112422 - 112422

Published: Dec. 12, 2024

Language: Английский

Citations

1
Selective Degradation of Polyethylene Terephthalate Plastic Waste Using Iron Salt Photocatalysts DOI

Shaokai Jiang,

Miao Wang, Yahao Huang

et al.

ChemSusChem, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 7, 2024

Abstract Plastic pollution poses a significant challenge to environmental conservation. Efficient recycling of plastic is key strategy address this issue. Polyethylene terephthalate (PET), commonly found in bottles, represents substantial portion waste. Consequently, the efficient degradation and PET crucial for sustainable development society. However, implementation methods depolymerization typically necessitates alkaline/acidic pre‐treatment energy input heating. Here, we propose gentle, highly photocatalysis approach selectively degrading waste into terephthalic acid (TPA) high yield (up 99 %) using cost‐effective iron salts. Notably, method achieved excellent selectivity with TON TOF values, applying oxygen or air as environmentally friendly oxidants. In addition, solvent can be recycled without compromising TPA yield, large‐scale reactions performed smoothly.

Language: Английский

Citations

0