Plastic waste has caused severe global environmental pollution and health issues due to the high production rate and lack of proper disposal technology. Traditional methods to deal with plastic waste, such as incineration and landfilling, are deemed unsustainable and energy-intensive. A promising alternative is the photocatalytic conversion of plastic waste, using sunlight as a sustainable and carbon-neutral energy source to break down plastic waste under ambient pressure and low temperatures. This review aims to provide a comprehensive summary of recent advancements in plastic photoconversion, with an emphasis on the catalysts and reaction pathways. The mechanisms and reaction routes are first reviewed, followed by a detailed discussion of strategies to design catalysts for improved performance in photoconversion. Then, examples of photothermal degradation processes are presented. Finally, current strategies, challenges, and possible future directions of plastic photoconversion are summarized and discussed.
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http://dx.doi.org/10.1002/cssc.202401700 | DOI Listing |
Environ Technol
January 2025
China State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou, Zhejiang Province, People's Republic of China.
The study investigated the chlorine and fluorine contents in three types of industrial solid waste: textile, plastic, and paper waste, utilizing various analytical methods. Significant variations in the proportions of organic and inorganic chlorine were observed among the waste types. During heat treatment, the majority of chlorine converts to a volatile state, with fixed chlorine content showing a correlation with organic chlorine.
View Article and Find Full Text PDFNat Commun
January 2025
Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore, Singapore.
Photocatalytic conversion has emerged as a promising strategy for harnessing renewable solar energy in the valorization of plastic waste. However, research on the photocatalytic transformation of plastics into valuable nitrogen-containing chemicals remains limited. In this study, we present a visible-light-driven pathway for the conversion of polylactic acid (PLA) into alanine under mild conditions.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
College of Textile Science and Engineering, Zhejiang Sci-Tech University, Zhejiang, China. Electronic address:
The development of degradable food packaging materials with hydrophobic and oleophobic properties is a key to focus in reducing plastic waste. Chitosan is gaining interest for its versatility and easy modification, but its application is limited by the poor hydrophobicity and oleophobicity. Using polymers to modify chitosan films has been shown as a promising approach to solve this issue.
View Article and Find Full Text PDFChemistry
January 2025
Centre CEA Paris-Saclay: Commissariat a l'Energie Atomique et aux Energies Alternatives Centre de Saclay, IRAMIS Institute, CEA - Saclay, 91190, Gif-Sur-Yvette, FRANCE.
The Schwartz's reagent Cp2Zr(H)Cl is a well known stoichiometric reagent for the reduction of unsaturated organic molecules but it has rarely been used in catalytic transformations. Herein, we describe the reduction of a variety of organic carbonates using the catalyst Cp2Zr(H)Cl in combination with Me(MeO)2SiH (DMMS) as reductant. This method was further applied to the reductive depolymerization of some polycarbonate materials and yielded silylated alcohols and diols in mild conditions.
View Article and Find Full Text PDFBull Environ Contam Toxicol
January 2025
Department of Microbiology, Faculty of Allied Health Sciences, Shree Guru Gobind Singh Tricentenary (SGT) University, Gurugram, Haryana, 122505, India.
Accumulation of plastic waste is an alarming environmental concern across globe. For which, microbial degradation offers an efficient ecofriendly solution. Thus, the present study focuses on the exploration of new bacterium that can grow on and utilize polyethylene.
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