Colloid Science of Metal Nanoparticle Catalysts in 2D and 3D Structures. Challenges of Nucleation, Growth, Composition, Particle Shape, Size Control and Their Influence on Activity and Selectivity
Colloid Science of Metal Nanoparticle Catalysts in 2D and 3D Structures. Challenges of Nucleation, Growth, Composition, Particle Shape, Size Control and Their Influence on Activity and Selectivity
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DOI：
10.1007/s11244-008-9077-0
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发表时间：
2008-08-01
影响因子：
3.6
通讯作者：
Park, Jeong Y.
中科院分区：
文献类型：
--
作者：
Somorjai, Gabor A.;Park, Jeong Y.
纳米科学合成的最新突破已经实现了对纳米颗粒尺寸和形状的控制，这与催化剂设计有关。本文综述了纳米颗粒的合成、二维和三维模型催化剂体系的制备、表征以及活性和选择性的研究进展。合成尺寸为1-10纳米的单分散铂和铑纳米颗粒的能力使我们能够研究单分散金属纳米颗粒的组成、结构和动力学性质对化学反应性和选择性的影响。我们回顾了纳米颗粒的大小和形状在多路径反应中决定反应选择性的重要性。通过探测催化纳米二极管中金属-氧化物界面的热电子流动，研究了金属-载体相互作用的影响。还讨论了纳米颗粒催化体系的新设计。
Recent breakthroughs in the synthesis of nanosciences have achieved the control of size and shape of nanoparticles that are relevant for catalyst design. In this article, we review advances in the synthesis of nanoparticles, fabrication of two- and three-dimensional model catalyst systems, characterization, and studies of activity and selectivity. The ability to synthesize monodispersed platinum and rhodium nanoparticles 1-10 nm in size permitted us to study the influence of composition, structure, and dynamic properties of monodispersed metal nanoparticles on chemical reactivity and selectivity. We review the importance of the size and shape of nanoparticles to determine reaction selectivity in multi-path reactions. The influence of metal-support interaction has been studied by probing the hot electron flows through the metal-oxide interface in catalytic nanodiodes. Novel designs of nano-particle catalytic systems are also discussed.