Journal ArticleDOI
Control of Metal Nanocrystal Size Reveals Metal-Support Interface Role for Ceria Catalysts
Matteo Cargnello,Matteo Cargnello,Vicky V. T. Doan-Nguyen,Thomas R. Gordon,Rosa E. Diaz,Eric A. Stach,Raymond J. Gorte,Paolo Fornasiero,Christopher B. Murray +8 more
TLDR
Rate measurements are reported on samples in which the length of the ceria-metal interface was tailored by the use of monodisperse nickel, palladium, and platinum nanocrystals, and it is found that carbon monoxide oxidation inceria-based catalysts is greatly enhanced at the cia- metal interface sites for a range of group VIII metal catalysts.Abstract:
Interactions between ceria (CeO2) and supported metals greatly enhance rates for a number of important reactions However, direct relationships between structure and function in these catalysts have been difficult to extract because the samples studied either were heterogeneous or were model systems dissimilar to working catalysts We report rate measurements on samples in which the length of the ceria-metal interface was tailored by the use of monodisperse nickel, palladium, and platinum nanocrystals We found that carbon monoxide oxidation in ceria-based catalysts is greatly enhanced at the ceria-metal interface sites for a range of group VIII metal catalysts, clarifying the pivotal role played by the supportread more
Citations
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Metal Catalysts for Heterogeneous Catalysis: From Single Atoms to Nanoclusters and Nanoparticles.
Lichen Liu,Avelino Corma +1 more
TL;DR: This Review will compare the results obtained from different systems and try to give a picture on how different types of metal species work in different reactions and give perspectives on the future directions toward better understanding of the catalytic behavior of different metal entities in a unifying manner.
Journal ArticleDOI
Highly Crystalline Multimetallic Nanoframes with Three-Dimensional Electrocatalytic Surfaces
Chen Chen,Yijin Kang,Ziyang Huo,Ziyang Huo,Zhongwei Zhu,Zhongwei Zhu,Wenyu Huang,Wenyu Huang,Huolin L. Xin,Joshua Snyder,Dongguo Li,Jeffrey A. Herron,Manos Mavrikakis,Miaofang Chi,Karren L. More,Yadong Li,Nenad M. Markovic,Gabor A. Somorjai,Gabor A. Somorjai,Peidong Yang,Vojislav R. Stamenkovic +20 more
TL;DR: A highly active and durable class of electrocatalysts is synthesized by exploiting the structural evolution of platinum-nickel (Pt-Ni) bimetallic nanocrystals by exploitingThe starting material, crystalline PtNi3 polyhedra, transforms in solution by interior erosion into Pt3Ni nanoframes with surfaces that offer three-dimensional molecular accessibility.
Journal ArticleDOI
Fundamentals and Catalytic Applications of CeO2-Based Materials
TL;DR: This review has a wide view on all those aspects related to ceria which promise to produce an important impact on the authors' life, encompassing fundamental knowledge of CeO2 and its properties, characterization toolbox, emerging features, theoretical studies, and all the catalytic applications, organized by their degree of establishment on the market.
Journal ArticleDOI
Thermally stable single-atom platinum-on-ceria catalysts via atom trapping
John J. Jones,Haifeng Xiong,Andrew DeLaRiva,Eric J. Peterson,Hien N. Pham,Sivakumar R. Challa,Gongshin Qi,Se Oh,Michelle H. Wiebenga,Xavier Isidro Pereira Hernandez,Yong Wang,Yong Wang,Abhaya K. Datye +12 more
TL;DR: Performing synthesis at high temperatures ensures that only the most stable binding sites are occupied, yielding a sinter-resistant, atomically dispersed catalyst.
Journal ArticleDOI
State of the Art and Prospects in Metal-Organic Framework (MOF)-Based and MOF-Derived Nanocatalysis.
Qi Wang,Didier Astruc +1 more
TL;DR: This review first briefly summarizes this background of MOF nanoparticle catalysis and then comprehensively reviews the fast-growing literature reported during the last years.
References
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Journal ArticleDOI
Monodisperse FePt Nanoparticles and Ferromagnetic FePt Nanocrystal Superlattices
TL;DR: Thermal annealing converts the internal particle structure from a chemically disordered face- centered cubic phase to the chemically ordered face-centered tetragonal phase and transforms the nanoparticle superlattices into ferromagnetic nanocrystal assemblies that can support high-density magnetization reversal transitions.
Journal ArticleDOI
Single-atom catalysis of CO oxidation using Pt1/FeOx
Botao Qiao,Aiqin Wang,Xiaofeng Yang,Lawrence F. Allard,Zheng Jiang,Yi-Tao Cui,Jingyue Liu,Jingyue Liu,Jun Li,Tao Zhang +9 more
TL;DR: Density functional theory calculations show that the high catalytic activity correlates with the partially vacant 5d orbitals of the positively charged, high-valent Pt atoms, which help to reduce both the CO adsorption energy and the activation barriers for CO oxidation.
Journal ArticleDOI
Catalytic Properties of Ceria and CeO2-Containing Materials
TL;DR: A survey of the use of cerium oxide and CeO2-containing materials as oxidation and reduction catalysts is presented in this paper, with a special focus on catalytic interaction with small molecules such as hydrogen, carbon monoxide, oxygen, and nitric oxide.
Journal ArticleDOI
Formation of hollow nanocrystals through the nanoscale Kirkendall effect
Yadong Yin,Robert M. Rioux,Can K. Erdonmez,Steven Hughes,Gabor A. Somorjai,A. Paul Alivisatos +5 more
TL;DR: A simple extension of the process yielded platinum–cobalt oxide yolk-shell nanostructures, which may serve as nanoscale reactors in catalytic applications, and provides a general route to the synthesis of hollow nanostructureures of a large number of compounds.
Journal Article
Formation of hollow nanocrystals through the nanoscale kirkendall effect
Yadong Yin,Robert M. Rioux,Can K. Erdonmez,Steven Hughes,Gabor A. Somorjai,A. Paul Alivisatos +5 more
TL;DR: Alivisatos et al. as mentioned in this paper demonstrate that hollow nanocrystals can be synthesized through a mechanism analogous to the Kirkendall Effect, in which pores form due to the difference in diffusion rates between two components in a diffusion couple.