A multimodal approach for platinum

IF 44.6 1区化学 Q1 CHEMISTRY, PHYSICAL

Nature Catalysis Pub Date : 2025-06-25 DOI:10.1038/s41929-025-01377-8

Marçal Capdevila-Cortada

引用次数: 0

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铂金的多模式方法

现在，Yasuhiro Iwasawa和他的同事们在电催化条件下进行了一项多模态研究，结合了一系列光谱和衍射技术，以阐明在PEMFC装置中Pt/C阴极催化剂上吸附的氧的作用。该技术包括时间分辨高能荧光探测x射线吸收近边缘结构（HERFD-XANES）、共振非弹性x射线散射（RIXS）、x射线衍射和快速x射线吸收精细结构，这些技术通过循环伏安法（CV）扫描获得，并与密度泛函理论计算和有限差分法近边缘结构模拟相补充。利用多模态方法，在每个给定的应用电位下，确定每种类型的氧、它们的吸附位点和覆盖范围——即角、边和（111）面位点上的O*和OH*物质——用于新鲜催化剂和经过1000和5000次加速耐久性测试（ADT）循环。在这些发现中，研究人员揭示了边缘位点在催化反应、涉及Pt-Pt配位数和无序变化的表面转化以及ADT循环后表面降解方面的作用更为突出。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nature Catalysis Chemical Engineering-Bioengineering

CiteScore

52.10

自引率

1.10%

发文量

140

期刊介绍： Nature Catalysis serves as a platform for researchers across chemistry and related fields, focusing on homogeneous catalysis, heterogeneous catalysis, and biocatalysts, encompassing both fundamental and applied studies. With a particular emphasis on advancing sustainable industries and processes, the journal provides comprehensive coverage of catalysis research, appealing to scientists, engineers, and researchers in academia and industry. Maintaining the high standards of the Nature brand, Nature Catalysis boasts a dedicated team of professional editors, rigorous peer-review processes, and swift publication times, ensuring editorial independence and quality. The journal publishes work spanning heterogeneous catalysis, homogeneous catalysis, and biocatalysis, covering areas such as catalytic synthesis, mechanisms, characterization, computational studies, nanoparticle catalysis, electrocatalysis, photocatalysis, environmental catalysis, asymmetric catalysis, and various forms of organocatalysis.