Journal ArticleDOI
Nanomaterials of high surface energy with exceptional properties in catalysis and energy storage
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TLDR
This critical review presents a review of the progress made for producing shape-controlled synthesis of nanomaterials of high surface energy using electrochemical and wet chemistry techniques and discusses important nanommaterials such as nanocrystal catalysts based on Pt, Pd, Au and Fe, metal oxides TiO(2) and SnO( 2), as well as lithium Mn-richMetal oxides.Abstract:
The properties of nanomaterials for use in catalytic and energy storage applications strongly depends on the nature of their surfaces. Nanocrystals with high surface energy have an open surface structure and possess a high density of low-coordinated step and kink atoms. Possession of such features can lead to exceptional catalytic properties. The current barrier for widespread industrial use is found in the difficulty to synthesise nanocrystals with high-energy surfaces. In this critical review we present a review of the progress made for producing shape-controlled synthesis of nanomaterials of high surface energy using electrochemical and wet chemistry techniques. Important nanomaterials such as nanocrystal catalysts based on Pt, Pd, Au and Fe, metal oxides TiO2 and SnO2, as well as lithium Mn-rich metal oxides are covered. Emphasis of current applications in electrocatalysis, photocatalysis, gas sensor and lithium ion batteries are extensively discussed. Finally, a future synopsis about emerging applications is given (139 references).read more
Citations
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Metal Catalysts for Heterogeneous Catalysis: From Single Atoms to Nanoclusters and Nanoparticles.
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Metal Oxides and Oxysalts as Anode Materials for Li Ion Batteries
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Metal–air batteries: from oxygen reduction electrochemistry to cathode catalysts
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Oxygen electrocatalysts in metal–air batteries: from aqueous to nonaqueous electrolytes
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Global life cycle releases of engineered nanomaterials
TL;DR: In this paper, the authors combined market information and material flow modeling to produce the first global assessment of the likely ENM emissions to the environment and landfills, estimating that 63-91% of over 260,000-309,000 metric tons of global ENM production in 2010 ended up in landfill, with the balance released into soils, water bodies, and atmosphere.
References
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Journal ArticleDOI
Platinum-based nanostructured materials: synthesis, properties, and applications.
Aicheng Chen,Peter Holt-Hindle +1 more
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Constructing Hierarchical Spheres from Large Ultrathin Anatase TiO2 Nanosheets with Nearly 100% Exposed (001) Facets for Fast Reversible Lithium Storage
Jun Song Chen,Yi Ling Tan,Chang Ming Li,Yan Ling Cheah,Deyan Luan,Srinivasan Madhavi,Freddy Yin Chiang Boey,Lynden A. Archer,Xiong Wen (David) Lou +8 more
TL;DR: This work shows that the high surface density of exposed TiO(2) (001) facets leads to fast lithium insertion/deinsertion processes in batteries that mimic features seen in high-power electrochemical capacitors.
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Catalysis of Gold Nanoparticles Deposited on Metal Oxides
TL;DR: The catalytic performance of Au nanoparticles is defined by three major factors: contact structure, support selection, and particle size, the first being the most important because the perimeter interfaces around Au particles act as the site for reaction as discussed by the authors.
Journal ArticleDOI
Li conductivity in lix mpo 4 ( m = mn , fe , co , ni ) olivine materials
TL;DR: In this article, activation barriers to Li ion motion are calculated and an estimate for Li diffusion constants, in the absence of electrical conductivity constraints, is made using first-principles methods.
Journal ArticleDOI
Tunable photocatalytic selectivity of hollow TiO2 microspheres composed of anatase polyhedra with exposed {001} facets.
TL;DR: The surface chemistry and the surface structure at the atomic level are key factors in tuning the adsorption selectivity and, consequently, photocatalytic selectivity of HTS toward azo dyes.