A single-Pt-atom-on-Ru-nanoparticle electrocatalyst for CO-resilient methanol oxidation
Agus R. Poerwoprajitno,Lucy Gloag,John Watt,Soshan Cheong,Xin Tan,H. Lei,Hassan A. Tahini,Aaron Henson,Bijil Subhash,Nicholas M. Bedford,Benjamin K. Miller,Peter B. O’Mara,Tania M. Benedetti,D. L. Huber,Wenhua Zhang,Sean C. Smith,J. Justin Gooding,Wolfgang Schuhmann,Richard D. Tilley +18 more
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In this article , the authors demonstrate a process that grows and spreads Pt islands on Ru branched nanoparticles to create single-Pt-atom-on-Ru catalysts.Abstract:
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. PtRu nanoparticles are the state-of-the-art catalysts for methanol electrooxidation—the anodic reaction in direct methanol fuel cells. Now, a method of dispersing single Pt atoms over Ru nanoparticles is presented and monitored in situ, thereby boosting the catalytic performance in the methanol oxidation reaction. read more
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Recent Advances of Single‐Atom‐Alloy for Energy Electrocatalysis
TL;DR: In this paper , the recent advances of SAAs in various electrochemical reactions are highlighted for further designing of highly effective electrocatalysts, and the challenges and suggestions for the future development of SAs in energy-conversion electrocatalysis are presented.
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Pt Atoms/Clusters on Ni-phytate-sensitized Carbon Nitride for Enhanced NIR-light-driven Overall Water Splitting beyond 800 nm.
TL;DR: In this article , the photogenerated electrons in a photosensitized system prepared by site-selective photodeposition of platinum single atoms/clusters (Pt-SACs) on Ni-phytate (PA-Ni)-sensitized polymeric carbon nitride (PCN).
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Platinum-Ruthenium Single Atom Alloy as a Bifunctional Electrocatalyst toward Methanol and Hydrogen Oxidation Reactions.
Ligang Chen,Xin Liang,Dingsheng Wang,Zuobo Yang,Chun-Ting He,Wei Zhao,Jiajing Pei,Yanrong Xue +7 more
TL;DR: In this article , a facile dual-regulation approach was developed to successfully synthesize Ru1Ptn single atom alloy (SAA) with atomic Ru dispersed in Pt nanocrystals.
Journal ArticleDOI
Introducing Stacking Faults into Three-Dimensional Branched Nickel Nanoparticles for Improved Catalytic Activity.
Zeno Rizqi Ramadhan,Agus R. Poerwoprajitno,Soshan Cheong,Richard D. Webster,Priyanka Kumari,Steffen Cychy,Lucy Gloag,Tania M. Benedetti,Christopher E. Marjo,Martin Muhler,Dawei Wang,J. Justin Gooding,Wolfgang Schuhmann,Richard D. Tilley +13 more
TL;DR: In this article , the authors demonstrate that varying the branch width by altering the size of the seed that the branch grows off is an effective method to precisely tune the stacking fault density in branched Ni nanoparticles.
Journal ArticleDOI
Engineering Support and Distribution of Palladium and Tin on MXene with the Modulation d-Band Center for CO-resilient Methanol Oxidation.
Shu Chen,Ning Liu,Junjie Zhong,Rongliang Yang,Bo Yan,Li Zhui Gan,Peng Yu,Xuchun Gui,Huanming Yang,Di You,Zhiping Zeng,Guo Long Yang +11 more
TL;DR: In this paper , a CO-resilient methanol oxidation reaction (MOR) catalyst of palladium-tin nano-alloy anchored on Se-doped MXene (PdSn 0.5 /Se-Ti 3 C 2 ) was presented.
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