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Co-integration of phosphates and triazines in designing novel covalent organic polymers (COPs) for efficient iodine vapor and carbon dioxide capture

リン酸塩とトリアジンの統合による新規共有結合有機ポリマーの設計:効率的なヨウ素蒸気および二酸化炭素捕捉 (AI 翻訳)

Prashant Yevale, Devendra Khade, Vaishnavi Naik, Purav Badani, A V S S Narayana Rao, Satyajit Saha

Chemical Engineering Journal Green and Sustainable📚 査読済 / ジャーナル2026-07-01#CCUS対象セクター: power
DOI: 10.1016/j.cejgas.2026.100096
原典: https://doi.org/10.1016/j.cejgas.2026.100096

🤖 gxceed AI 要約

日本語

本論文では、リン酸エステル結合を導入した3種のトリアジン系共有結合有機ポリマー(COP)を合成。MPO-COPが75℃で410 wt%のヨウ素蒸気吸着能を示し、CO2吸着でも42 cm³/g(0.03 bar, 273 K)の性能を達成。繰り返し使用可能で、核廃棄物処理やCO2回収への応用が期待される。

English

This study synthesizes three triazine-based covalent organic polymers (COPs) with phosphate ester linkages. MPO-COP achieves exceptional iodine vapor uptake of 410 wt% at 75°C and CO2 uptake of 42 cm³ g⁻¹ at 0.03 bar/273 K, with excellent recyclability. These materials show promise for nuclear waste management and post-combustion carbon capture.

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

📝 gxceed 編集解説 — Why this matters

日本のGX文脈において

日本の原子力発電所からの放射性ヨウ素捕捉や、CCSに資する新しい多孔質材料の設計手法を提供する。

In the global GX context

This work advances porous organic polymers for dual iodine and CO2 capture, relevant to nuclear waste management and post-combustion carbon capture globally.

👥 読者別の含意

🔬研究者:This paper presents novel COPs with high iodine and CO2 capture capacities, offering insights into material design for nuclear waste and carbon capture applications.

📄 Abstract(原文)

Nuclear energy is a reliable low-carbon solution for meeting surging global electricity demand. Nevertheless, uranium-235 fission releases volatile radioactive iodine isotopes ( 129 I and 131 I) that are difficult to manage because of their high mobility, water solubility, and strong tendency to accumulate in the thyroid gland. Efficient, reusable sorbents are therefore essential for safe nuclear waste handling and environmental protection. In this work, we have designed and synthesized three new triazine-based covalent organic polymers (COPs) incorporating phosphate ester linkages, namely PPO-COP , MPO-COP , and OPO-COP, through a simple condensation approach. The resulting nitrogen- and phosphorus-rich networks exhibited high thermal and chemical stability along with porous architectures. Among them, MPO-COP delivered an exceptional iodine vapor uptake of 410 wt% at 75 °C, while OPO-COP and PPO-COP reached 290 wt% and 252 wt%, respectively. These values surpass those of many previously reported porous organic adsorbents. Additionally, MPO-COP achieved a CO₂ uptake of 42 cm 3 g −1 at 0.03 bar and 273 K with fully reversible isotherms. This represents one of the highest low-pressure capacities reported for phosphate-based covalent organic polymers and a potential porous material for the efficient capture of CO 2 from post-combustion flue gas or direct-air streams. These polymers are straightforward to prepare, scalable, and maintain excellent performance over multiple adsorption-desorption cycles. The superior capacity originated from co -operative charge-transfer and Lewis acid-base interactions between molecular iodine and the electron-rich phosphate oxygen atoms and triazine units within the polymer backbone.

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