Probing and Leveraging the Structural Heterogeneity of Nanomaterials for Enhanced Catalysis

IF 4.8 Q2 NANOSCIENCE & NANOTECHNOLOGY
Rui Yang, Zhenghong Bao and Yifan Sun*, 
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引用次数: 1

Abstract

The marriage between nanoscience and heterogeneous catalysis has introduced transformative opportunities for accessing better nanocatalysts. However, the structural heterogeneity of nanoscale solids stemming from distinct atomic configurations makes it challenging to realize atomic-level engineering of nanocatalysts in the way that is attained for homogeneous catalysis. Here, we discuss recent efforts in unveiling and exploiting the structural heterogeneity of nanomaterials for enhanced catalysis. Size and facet control of nanoscale domains produce well-defined nanostructures that facilitate mechanistic studies. Differentiation of surface and bulk characteristics for ceria-based nanocatalysts guides new thoughts toward lattice oxygen activation. Manipulating the compositional and species heterogeneity between local and average structures allows regulation of catalytically active sites via the ensemble effect. Studies on catalyst restructurings further highlight the necessity to assess the reactivity and stability of nanocatalysts under reaction conditions. These advances promote the development of novel nanocatalysts with expanded functionalities and bring atomistic insights into heterogeneous catalysis.

Abstract Image

探索和利用纳米材料的结构非均质性增强催化
纳米科学和多相催化之间的结合为获得更好的纳米催化剂带来了变革性的机会。然而,源于不同原子构型的纳米级固体的结构异质性使得以均相催化的方式实现纳米催化剂的原子级工程具有挑战性。在这里,我们讨论了最近在揭示和利用纳米材料的结构异质性以增强催化方面所做的努力。纳米尺度域的尺寸和面控制产生了明确的纳米结构,有助于机理研究。二氧化铈基纳米催化剂表面和本体特性的差异引导了晶格氧活化的新思路。操纵局部结构和平均结构之间的组成和物种异质性允许通过系综效应调节催化活性位点。对催化剂结构的研究进一步强调了评估纳米催化剂在反应条件下的反应性和稳定性的必要性。这些进展促进了具有扩展功能的新型纳米催化剂的开发,并为多相催化带来了原子论的见解。
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来源期刊
ACS Nanoscience Au
ACS Nanoscience Au 材料科学、纳米科学-
CiteScore
4.20
自引率
0.00%
发文量
0
期刊介绍: ACS Nanoscience Au is an open access journal that publishes original fundamental and applied research on nanoscience and nanotechnology research at the interfaces of chemistry biology medicine materials science physics and engineering.The journal publishes short letters comprehensive articles reviews and perspectives on all aspects of nanoscience and nanotechnology:synthesis assembly characterization theory modeling and simulation of nanostructures nanomaterials and nanoscale devicesdesign fabrication and applications of organic inorganic polymer hybrid and biological nanostructuresexperimental and theoretical studies of nanoscale chemical physical and biological phenomenamethods and tools for nanoscience and nanotechnologyself- and directed-assemblyzero- one- and two-dimensional materialsnanostructures and nano-engineered devices with advanced performancenanobiotechnologynanomedicine and nanotoxicologyACS Nanoscience Au also publishes original experimental and theoretical research of an applied nature that integrates knowledge in the areas of materials engineering physics bioscience and chemistry into important applications of nanomaterials.
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