A single-Pt-atom-on-Ru-nanoparticle electrocatalyst for CO-resilient methanol oxidation,Nature Catalysis

当前位置： X-MOL 学术 › Nat. Catal. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

A single-Pt-atom-on-Ru-nanoparticle electrocatalyst for CO-resilient methanol oxidation
Nature Catalysis ( IF 42.8 ) Pub Date : 2022-03-25 , DOI: 10.1038/s41929-022-00756-9
Agus R. Poerwoprajitno ₁ , Lucy Gloag ₁ , Aaron Henson _{1,

2} , Peter B. O’Mara ₁ , Tania M. Benedetti ₁ , J. Justin Gooding _{1,

3} , Richard D. Tilley _{1,

4} , John Watt ₅ , Soshan Cheong ₄ , Xin Tan ₆ , Hassan A. Tahini ₆ , Sean C. Smith ₆ , Han Lei ₇ , Bijil Subhash ₈ , Nicholas M. Bedford ₈ , Benjamin K. Miller ₉ , Dale L. Huber ₁₀ , Wenhua Zhang ₁₁ , Wolfgang Schuhmann ₁₂

Affiliation

School of Chemistry, The University of New South Wales, Sydney, New South Wales, Australia
Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC, USA
Australian Research Council Centre of Excellence in Convergent Bio-Nano Science and Technology, University of New South Wales, Sydney, New South Wales, Australia
Mark Wainwright Analytical Centre, The University of New South Wales, Sydney, New South Wales, Australia
Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, NM, USA
Integrated Materials Design Laboratory, Department of Applied Mathematics, Research School of Physics, The Australian National University, Canberra, Australian Capital Territory, Australia
Department of Chemical Physics, University of Science and Technology of China, Hefei, China
School of Chemical Engineering, University of New South Wales, Sydney, New South Wales, Australia
Gatan, Pleasanton, CA, USA
Center for Integrated Nanotechnologies, Sandia National Laboratories, Albuquerque, NM, USA
Hefei National Laboratory for Physical Sciences at the Microscale, Synergetic Innovation Centre of Quantum Information and Quantum Physics, Department of Material Science and Technology, University of Science and Technology of China, Hefei, China
Analytical Chemistry – Center for Electrochemical Sciences, Faculty of Chemistry and Biochemistry, Ruhr-Universität Bochum, Bochum, Germany

Single Pt atom catalysts are key targets because a high exposure of Pt substantially enhances electrocatalytic activity. In addition, PtRu alloy nanoparticles are the most active catalysts for the methanol oxidation reaction. To combine the exceptional activity of single Pt atom catalysts with an active Ru support we must overcome the synthetic challenge of forming single Pt atoms on noble metal nanoparticles. Here we demonstrate a process that grows and spreads Pt islands on Ru branched nanoparticles to create single-Pt-atom-on-Ru catalysts. By following the spreading process by in situ TEM, we found that the formation of a stable single atom structure is thermodynamically driven by the formation of strong Pt–Ru bonds and the lowering of the surface energy of the Pt islands. The stability of the single-Pt-atom-on-Ru structure and its resilience to CO poisoning result in a high current density and mass activity for the methanol oxidation reaction over time.

中文翻译：

用于 CO 弹性甲醇氧化的单 Pt 原子钌纳米粒子电催化剂

单 Pt 原子催化剂是关键目标，因为 Pt 的高暴露显着提高了电催化活性。此外，PtRu合金纳米粒子是甲醇氧化反应最活跃的催化剂。为了将单 Pt 原子催化剂的卓越活性与活性 Ru 载体相结合，我们必须克服在贵金属纳米颗粒上形成单 Pt 原子的合成挑战。在这里，我们展示了一种在 Ru 支链纳米颗粒上生长和扩散 Pt 岛以创建单 Pt-atom-on-Ru 催化剂的过程。通过原位 TEM 跟踪扩散过程，我们发现稳定的单原子结构的形成是由强 Pt-Ru 键的形成和 Pt 岛表面能的降低在热力学上驱动的。

更新日期：2022-03-25

点击分享查看原文

点击收藏

阅读更多本刊最新论文