Wang Jie, Ye Jiang, Chen Sixuan, Zhang Qinyong
Key Laboratory of Fluid and Power Machinery of Ministry of Education, School of Materials Science and Engineering, Xihua University, Chengdu 610039, China.
Molecules. 2024 Apr 3;29(7):1617. doi: 10.3390/molecules29071617.
The crystal phase, alongside the composition, morphology, architecture, facet, size, and dimensionality, has been recognized as a critical factor influencing the properties of noble metal nanomaterials in various applications. In particular, unconventional crystal phases can potentially enable fascinating properties in noble metal nanomaterials. Recent years have witnessed notable advances in the phase engineering of nanomaterials (PEN). Within the accessible strategies for phase engineering, the effect of strain cannot be ignored because strain can act not only as the driving force of phase transition but also as the origin of the diverse physicochemical properties of the unconventional crystal phase. In this review, we highlight the development of unconventional crystal-phase noble metal nanomaterials within strain engineering. We begin with a short introduction of the unconventional crystal phase and strain effect in noble metal nanomaterials. Next, the correlations of the structure and performance of strain-engineered unconventional crystal-phase noble metal nanomaterials in electrocatalysis are highlighted, as well as the phase transitions of noble metal nanomaterials induced by the strain effect. Lastly, the challenges and opportunities within this rapidly developing field (i.e., the strain engineering of unconventional crystal-phase noble metal nanocatalysts) are discussed.
晶体相，连同组成、形态、结构、晶面、尺寸和维度，已被认为是影响贵金属纳米材料在各种应用中性能的关键因素。特别是，非常规晶体相有可能使贵金属纳米材料具有引人入胜的性能。近年来，纳米材料的相工程（PEN）取得了显著进展。在可实现的相工程策略中，应变的影响不容忽视，因为应变不仅可以作为相变的驱动力，还可以作为非常规晶体相各种物理化学性质的起源。在这篇综述中，我们重点介绍了应变工程中非常规晶体相贵金属纳米材料的发展情况。我们首先简要介绍了贵金属纳米材料中的非常规晶体相和应变效应。接下来，重点介绍了应变工程化非常规晶体相贵金属纳米材料在电催化中的结构与性能的相关性，以及应变效应引起的贵金属纳米材料的相变。最后，讨论了这个快速发展领域（即非常规晶体相贵金属纳米催化剂的应变工程）中的挑战和机遇。
