Plasma-Enabled Process with Single-Atom Catalysts for Sustainable Plastic Waste Transformation
Abstract
The escalating issue of plastic waste generation has prompted the search for an effective solution to address these challenges. In this study, we present a novel plasma‐enabled strategy for the rapid breakdown of various types of plastic wastes, including mixtures, into high‐value carbon nanomaterials and hydrogen. The H2 yield and selectivity achieved through the implemented catalyst‐free plasma‐enabled strategy are 14.2 and 5.9 times higher, respectively, compared to those obtained with conventional thermal pyrolysis under similar conditions. It is noteworthy that this catalyst‐free plasma alone approach yields a significantly higher energy yield of H2 (gH2/kWh) compared to other pyrolysis processes. By coupling plasma pyrolysis with thermal catalytic process, employing of 1 wt . % M/CeO2 (M=Fe, Co, and Ni) atomically dispersed catalysts can further enhance hydrogen production. Specifically, the 1 wt . % Co/CeO2 catalyst demonstrated excellent catalytic performance throughout the 10 cycles of plastic waste decomposition, achieving the highest H2 yield of 46.7 mmol/gplastic (equivalent to 64.4 % of theoretical H2 production) and nearly 100 % hydrogen atom recovery efficiency at the 7th cycle. Notably, the H2 yield achieved over the atomically dispersed Fe on CeO2 surface (1 wt . % Fe/CeO2) in the integrated plasma‐thermal catalytic process is comparable to that obtained with Fe particles on CeO2 surface (10 wt . % Fe/CeO2). This outcome, demonstrated with single‐atom catalysts, offers a promising avenue for cost‐effective and efficient chemical plastic recycling. Through a combination of experimental and computational efforts, we have provided an in‐depth understanding of the catalytic mechanisms of the investigated single atom catalysts in the developed plasma‐enabled process. This innovative and straightforward approach provides a promising and expedient strategy for continuously converting diverse plastic waste streams, including mixed and contaminated sources, into high‐value products conducive to a circular plastic economy.
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BibTeX
@article{yu2026plasmaenabled,
title = {{Plasma-Enabled Process with Single-Atom Catalysts for Sustainable Plastic Waste Transformation}},
author = {Xiao Yu and Zhiqiang Rao and Guoxing Chen and Yuantao Yang and Songhak Yoon and Lina Liu and Zeai Huang and Marc Widenmeyer and Heng Guo and Gert Homm and Ulrike Kunz and Xingmin Liu and Emanuel Ionescu and Leopoldo Molina-Luna and Xin Tu and Ying Zhou and Anke Weidenkaff},
journal = {Angewandte Chemie - International Edition},
year = {2026},
month = oct,
doi = {10.1002/anie.202404196},
url = {https://hal.science/hal-05789814v1},
note = {CC BY-NC},
}
RIS
TY - JOUR
TI - Plasma-Enabled Process with Single-Atom Catalysts for Sustainable Plastic Waste Transformation
AU - Xiao Yu
AU - Zhiqiang Rao
AU - Guoxing Chen
AU - Yuantao Yang
AU - Songhak Yoon
AU - Lina Liu
AU - Zeai Huang
AU - Marc Widenmeyer
AU - Heng Guo
AU - Gert Homm
AU - Ulrike Kunz
AU - Xingmin Liu
AU - Emanuel Ionescu
AU - Leopoldo Molina-Luna
AU - Xin Tu
AU - Ying Zhou
AU - Anke Weidenkaff
PY - 2026
DA - 2026/10/09
JO - Angewandte Chemie - International Edition
DO - 10.1002/anie.202404196
UR - https://hal.science/hal-05789814v1
AB - The escalating issue of plastic waste generation has prompted the search for an effective solution to address these challenges. In this study, we present a novel plasma‐enabled strategy for the rapid breakdown of various types of plastic wastes, including mixtures, into high‐value carbon nanomaterials and hydrogen. The H2 yield and selectivity achieved through the implemented catalyst‐free plasma‐enabled strategy are 14.2 and 5.9 times higher, respectively, compared to those obtained with conventional thermal pyrolysis under similar conditions. It is noteworthy that this catalyst‐free plasma alone approach yields a significantly higher energy yield of H2 (gH2/kWh) compared to other pyrolysis processes. By coupling plasma pyrolysis with thermal catalytic process, employing of 1 wt . % M/CeO2 (M=Fe, Co, and Ni) atomically dispersed catalysts can further enhance hydrogen production. Specifically, the 1 wt . % Co/CeO2 catalyst demonstrated excellent catalytic performance throughout the 10 cycles of plastic waste decomposition, achieving the highest H2 yield of 46.7 mmol/gplastic (equivalent to 64.4 % of theoretical H2 production) and nearly 100 % hydrogen atom recovery efficiency at the 7th cycle. Notably, the H2 yield achieved over the atomically dispersed Fe on CeO2 surface (1 wt . % Fe/CeO2) in the integrated plasma‐thermal catalytic process is comparable to that obtained with Fe particles on CeO2 surface (10 wt . % Fe/CeO2). This outcome, demonstrated with single‐atom catalysts, offers a promising avenue for cost‐effective and efficient chemical plastic recycling. Through a combination of experimental and computational efforts, we have provided an in‐depth understanding of the catalytic mechanisms of the investigated single atom catalysts in the developed plasma‐enabled process. This innovative and straightforward approach provides a promising and expedient strategy for continuously converting diverse plastic waste streams, including mixed and contaminated sources, into high‐value products conducive to a circular plastic economy.
ER -