Pr(OH)3 nanorods on Cu generates asymmetric active sites through interplay and geometric deformation for CO2 electroreduction
Cu上のPr(OH)3ナノロッドが相互作用と幾何学的変形により非対称活性サイトを生成しCO2電気還元を促進 (AI 翻訳)
曾尚红
🤖 gxceed AI 要約
日本語
本論文は、Pr(OH)3ナノロッドをCuナノシートに導入することで、CO2電気還元におけるCuの過還元を防止し、非対称活性サイトを生成する触媒を開発。12.7% Pr(OH)3/Cu触媒は、250 mA cm-2の工業的電流密度でC2H4のファラデー効率50.2%を達成。in situ分光法により、Pr3+/Pr4+とCu+/Cuの非対称モチーフがC2中間体生成を促進することを実証。
English
This paper introduces Pr(OH)3 nanorods onto Cu nanosheets to prevent Cu over-reduction during CO2 electroreduction, creating asymmetric active sites. The 12.7% Pr(OH)3/Cu catalyst achieves 50.2% Faradaic efficiency for C2H4 at an industrially relevant current density of 250 mA cm-2. In situ spectroscopy reveals that asymmetric Pr3+/Pr4+ and Cu+/Cu motifs synergistically promote C2 intermediate formation, offering a sustainable pathway for efficient CO2-to-C2 conversion.
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
本研究成果は、CO2を原料とする化学品製造（CCUS）の実用化に向けた重要な知見を提供。日本の化学産業におけるカーボンリサイクル技術の開発や、グリーンケミカルへの転換に寄与する可能性がある。
In the global GX context
This work advances the field of CO2 electroreduction for producing value-added chemicals like ethylene, which is crucial for global decarbonization efforts. The high Faradaic efficiency at industrially relevant current densities highlights its potential for commercial CCUS applications, aligning with net-zero targets.
👥 読者別の含意
🔬研究者:Provides a novel catalyst design strategy for asymmetric active sites in CO2 electroreduction, relevant to materials science and electrocatalysis.
🏢実務担当者:Offers insights into rare-earth hydroxide-modified Cu catalysts for efficient CO2-to-ethylene conversion, which could be explored for industrial carbon utilization.
🏛政策担当者:Demonstrates technological progress in CCUS, supporting policies for carbon capture and utilization infrastructure development.
📄 Abstract（原文）
Leveraging the asymmetric active motifs with high precision holds potential and presents substantial challenge due to design constraints and complex interphase. Herein, Pr(OH)3 nanorods are introduced onto Cu nanosheets to spontaneously regulate the interplay aiming to prevent Cu over-reduction during the CO2 electroreduction. Specifically, the 12.7% Pr(OH)3/Cu catalyst achieves a 50.2% Faradaic efficiency of C2H4 at industrially relevant current density of 250 mA cm-2. Complementary structural characterizations combined with in situ/operando spectroscopy studies prove that Pr(OH)3 incorporation facilitates the generation of asymmetric Pr3+/Pr4+ and Cu+/Cu motifs, synergizing the formation of C2 products-related intermediates through increasing the number of active sites on the Pr(OH)3/Cu+/Cu heterogeneous interphase. This work demonstrates that the introduction of rare earth hydroxide can activate the asymmetric active sites on Cu, providing a sustainable pathway for efficient CO2-to-C2 conversion.
🔗 Provenance — このレコードを発見したソース
- scidb https://doi.org/10.57760/sciencedb.cjcatal.00019first seen 2026-07-29 10:51:44
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