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通过现场喷射促进2D MXene 膜的原子探测器断层扫描

Mathias Krämer¹, Bar Favelukis², Maxim Sokol²

¹Max Planck Institute for Sustainable Materials, Max-Planck-Straße 1, Düsseldorf 40237, Germany.

Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada

|May 20, 2024

概括

研究人员开发了一种新的方法来准备2D材料,如MXenes,用于原子探头断层扫描. 这种技术改善了分析它们的化学成分和性能,用于储能和催化应用.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
化学化学化学

背景情况:

包括MXenes在内的二维 (2D) 材料是储能和催化过程中至关重要的纳米材料.
湿化学合成MXenes的结果是不同的功能组,并需要介质像Li+进行脱皮.
了解合成的二维材料的精确化学成分对于将结构与属性关联起来至关重要.

研究的目的:

提出对2D材料原子探头断层扫描 (APT) 分析的修订样本制备方法.
为了能够对MXenes和类似的二维材料进行详细的化学成分分析.
促进研究先进纳米材料中的结构性质关系.

主要方法:

一种体Ti3C2Tz MXene溶液被加工成一种无添加剂的,独立的薄膜.
对APT的样本准备使用双光束扫描电子显微镜/聚焦离子束 (FIB-SEM) 进行.
用现场喷技术来机械稳定脆弱的标本.

主要成果:

该研究成功准备了适合APT分析的MXene标本.
修订后的方法允许对二维材料进行详细的化学成分确定.
该技术证明了分析成片加工的其他二维材料油墨的潜力.

结论:

这种样本制备方法对于推进2D材料的APT分析至关重要.
这种方法将增强对MXenes和其他2D纳米材料的组成-属性关系的理解.
该技术为储能和催化研究中的材料表征开辟了新的途径.

关键词:

在现场涂层.两维材料是二维材料.这就是MXenesenes.原子探头断层扫描 (tomography) 是一种原子探头.聚焦的离子束.

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