Coordination‐Regulated Single‐Atom Evolution from Iron‐Conditioned Waste Activated Sludge for Low‐Carbon Fenton‐Like Water Purification
鉄コンディショニング廃活性汚泥からの配位制御単一原子進化による低炭素フェントン様水浄化 (AI 翻訳)
Sai Bai, Xiang Pei, Yuan‐bo Zhou, G. Chen, Fan Dong, Jin Qian
🤖 gxceed AI 要約
日本語
廃活性汚泥を前駆体とした鉄系単一原子触媒を開発。最適条件下で高い選択性と長寿命を実現。ライフサイクル評価により、従来比40分の1の運転コストを達成。
English
This study develops Fe-based single-atom catalysts from waste activated sludge for low-carbon Fenton-like water purification. The system shows high selectivity and stability over 120 hours. LCA confirms 40-fold reduction in operating costs compared to benchmarks.
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
日本でも下水汚泥の資源化は課題。低コストな触媒プロセスは排水処理の脱炭素に貢献し得る。
In the global GX context
The 'in-plant circular catalysis' concept aligns with global circular economy goals. The cost reduction demonstrated is significant for industrial wastewater treatment.
👥 読者別の含意
🔬研究者:Demonstrates a scalable synthesis route for single-atom catalysts using waste sludge, with coordinated tuning of active sites.
🏢実務担当者:Potential for cost-effective and low-carbon wastewater treatment for factories with sludge generation.
🏛政策担当者:Highlights a path to valorize waste sludge into high-value catalysts, supporting circular economy policies.
📄 Abstract（原文）
ABSTRACT Single‐atom catalysts (SACs) design remains constrained by the inability to integrate atomic‐level coordination control with mass transport and scalable synthesis. Herein, we address this challenge by developing a self‐templated heterogeneous matrix that couples coordination regulation with hierarchical accessibility within a scalable platform. Using iron‐conditioned waste‐activated sludge (WAS) as a precursor, porously nanoconfined Fe‐based SACs is constructed. The system exhibits a volcano‐type dependence of catalytic activity on iron‐conditioning dosage, with peak performance at the single‐atom loading threshold (∼0.8 wt.% Fe, corresponding to 1 mg Fe per g dry WAS). Correlative XAS/EXAFS and DFT analysis pinpoint Fe‐N 3 O 1 as the prevailing coordination environment that modulates spin states and downshifts the d‐band center, thereby facilitating deprotonation‐assisted * O– * O scission and 1 O 2 ‐formation (∼95% selectivity). Broad‐spectrum abatement of electron‐rich pollutants was achieved that persists under complex matrices in column‐scale‐up application (remain 90% over 120 h reaction). System‐level LCA and TEA confirm markedly lower cradle‐to‐gate environmental impacts and a 40‐fold reduction in operating costs relative to ZIF‐derived Fe‐SACs baselines. This work establishes a generalizable framework for SAC design and defines an “in‐plant circular catalysis” paradigm for transforming iron‐conditioned waste‐activated sludge into high‐value catalysts, charting a sustainable route toward efficient and environmentally benign Fenton‐like wastewater purification.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1002/adfm.77264first seen 2026-07-24 05:45:19
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