Solar energy paper index
The role of nanosized iron oxides in the carbon dioxide-assisted pyrolysis of polypropylene for production of syngas and persulfate activator
One-line summary
A solar energy research paper on The role of nanosized iron oxides in the carbon dioxide-assisted pyrolysis of polypropylene for production of syngas and persulfate activator.
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Chinese explanation / 中文解读
中文解读待补充：本站会优先为光伏效率、钙钛矿太阳能电池、储能技术、太阳能热利用、BIPV、并网技术等高价值论文补充中文说明。
Original abstract
Plastic waste posed a significant environmental challenge due to its non-biodegradable nature and inefficient waste treatment, necessitating innovative recycling solutions. This study investigated the co-pyrolysis of polypropylene (PP) with nanosized iron oxides (γ-Fe 2 O 3 , Fe 3 O 4 , FeOOH, α-Fe 2 O 3 ) under varying CO 2 concentrations to achieve dual objectives: syngas production and the synthesis of persulfate activators for the oxidative degradation of organic pollutant. Results demonstrated that co-pyrolysis of PP with maghemite (γ-Fe 2 O 3 ) under a 20% CO₂ atmosphere at a 1:5 PP-to-iron oxide ratio generated syngas (H 2 : 3.4 mol%, CO: 2.3 mol%), driven by enhanced catalytic activity and hydrocarbon decomposition. The resulting iron-carbon-based composites, characterized by high surface area and Fe 3 O 4 phase transformation, exhibited superior persulfate activation, achieving up to 84.1% removal of 2,4-dichlorophenoxyacetic acid (2,4-D) with 2 mM sodium persulfate. Quenching experiments revealed the critical role of SO 4 •, •OH, and O 2 • radicals in pollutant degradation. This integrated approach offer a sustainable strategy for plastic waste management, energy recovery, and water remediation.
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