Unveiling High-Entropy Alloy Nanomaterials: A Quantum Leap in Catalysis
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摘要: 高熵合金是一种由5种或更多的金属元素以相等或接近相等的比例组成的新型合金,具有灵活可调的多元化结构和潜在的特性。随着合成技术的不断进步,让可控合成纳米尺度的高熵合金成为现实,因其独特的微观结构、优异的热稳定性,高熵合金纳米材料在电/热催化和清洁能源转换等方面表现出巨大应用潜力。本文主要介绍对高熵合金纳米材料的基本见解、先进的合成和表征技术并讨论其催化应用。
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图 2 长时间辐照下高熵合金表面原子变化(a‒c)和钯颗粒表面原子变化(d‒f)[4]
图 3 高熵合金FeCoNiCuPt氧化过程原位电镜研究[5]
图 5 碳热冲击法制备高熵合金纳米颗粒[7]
图 6 湿化学法合成高熵合金纳米线[9]
图 9 高熵合金纳米颗粒X射线衍射图[12]
图 10 高熵合金纳米颗粒扩展X射线吸收精细结构(EXAFS)谱[12]
图 11 原子分辨的高熵合金纳米颗粒STEM照片[12]
图 14 氨气在不同高熵合金表面上的吸附脱附能比较[14]
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