中国科学院金属研究所张炳森课题组的一项最新研究揭示了用电子能量损失谱法探测低原子序数催化剂的精细结构。该研究于2025年2月16日发表于国际一流学术期刊《颗粒学报》杂志上。

低原子序数催化剂由于具有成本效益和优异的化学稳定性，在环境管理、催化反应和能源转化等领域得到了广泛的应用。深入研究这些催化剂的复杂结构，建立其构效关系，揭示其催化机理，是开发新型高效催化剂的基础。电子能量损失光谱（EELS）是一种关键的电子显微镜技术，由于其高空间分辨率和对低原子序数元素的敏锐灵敏度，在解剖低原子序数催化剂的精细结构方面具有独特的优势。本文综述了EELS在探索低z催化剂精细结构中的作用，包括技术基础、优势和催化剂分析中的具体主题案例。EELS可以精确定位催化剂中低z元素的位置、化学环境和电子属性，为揭开催化机制的神秘面纱和制定创新催化剂提供了至关重要的见解。

此外，本文还对EELS技术在低原子序数催化剂的详细结构研究中的潜在进展进行了探讨，并对该研究领域的发展前景进行了展望。

附：英文原文

Title: Probing the fine structures of low atomic number catalysts by using electron energy loss spectroscopy

Author: Bingsen Zhang

Issue&Volume: 2025/02/16

Abstract: Low atomic number catalysts have gained widespread application in areas such as environmental management, catalytic reactions, and energy transformation, thanks to their cost-effectiveness and superior chemical stability. An in-depth exploration of the intricate structures of these catalysts, establishing their structure-activity relationships, and revealing their catalysis mechanisms are fundamental for developing novel and efficient catalysts. Electron energy loss spectroscopy (EELS), a pivotal electron microscopy technique, uniquely excels in dissecting the fine structures of low atomic number catalysts, since its high spatial resolution and acute sensitivity to elements with low atomic numbers. This review summarizes the role of EELS in probing the fine structures of low-Z catalysts, encompassing the technological underpinnings, advantages, and specific use cases in catalyst analysis. EELS can pinpoint the location, chemical surroundings, and electronic attributes of low-Z elements in catalysts, thus offering crucial insights for demystifying catalytic mechanisms and formulating innovative catalysts. Furthermore, this review delves into the potential advancements of EELS technology in the detailed structural study of low atomic number catalysts, hinting at a promising future for this research field.

DOI: 10.1016/j.partic.2025.01.015

Source: https://www.sciencedirect.com/science/article/abs/pii/S1674200125000318