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
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Journal ArticleDOI
Pd Nanocrystals with Continuously Tunable High-Index Facets as a Model Nanocatalyst
Neng-Fei Yu,Neng-Fei Yu,Na Tian,Zhi-You Zhou,Tian Sheng,Wen-Feng Lin,Jin-Yu Ye,Shuo Liu,Hai-Bin Ma,Shi-Gang Sun +9 more
TL;DR: In this paper, the structure-reactivity relationship of catalysts is usually gained through using well-defined bulk single-crystal planes as model catalysts, however, there exists a huge gap between the knowledge of the structure and the reactivity relationship of these planes.
Journal ArticleDOI
Plasmon‐Mediated Synthesis of Silver Cubes with Unusual Twinning Structures Using Short Wavelength Excitation
TL;DR: A method is reported for controlling the twinning structure of silver nanoparticles, and consequently their shape, via the plasmon-mediated synthesis, solely by varying the excitation wavelength between 400, 450, and 500 nm, which modulates the rate of Ag⁺ reduction.
Journal ArticleDOI
Role of the Morphology and Surface Planes on the Catalytic Activity of Spinel LiMn1.5Ni0.5O4 for Oxygen Evolution Reaction
TL;DR: In this article, the electrocatalytic activity of spinel oxide LiMn1.5Ni0.5O4 with different morphologies (cubic, spherical, octahedral, and truncated) was investigated for the oxygen evolution reaction (OER) in alkaline solutions that is of interest for metal-air batteries.
Journal ArticleDOI
Tuning the structure and property of nanostructured cathode materials of lithium ion and lithium sulfur batteries
TL;DR: In this article, a review of the recent developments in structure-tuning of the most appealing cathode materials, including layered lithium metal oxides, olivine structured LiFePO4, spinel LiMn2O4 and LiNi0.5Mn1.5O4, as well as sulfur cathodes, is presented.
Journal ArticleDOI
Standing carbon-coated molybdenum dioxide nanosheets on graphene: morphology evolution and lithium ion storage properties
TL;DR: In this article, an unprecedented MoO2/carbon network, consisting of the standing carbon-coated MoO 2 nanosheets on graphene, was presented. But the performance of the network was not analyzed.
References
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Journal ArticleDOI
Gold nanoparticles: assembly, supramolecular chemistry, quantum-size-related properties, and applications toward biology, catalysis, and nanotechnology.
TL;DR: A review of gold nanoparticles can be found in this article, where the most stable metal nanoparticles, called gold colloids (AuNPs), have been used for catalysis and biology applications.
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Chemistry and properties of nanocrystals of different shapes.
TL;DR: The interest in nanoscale materials stems from the fact that new properties are acquired at this length scale and, equally important, that these properties are equally important.
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Shape‐Controlled Synthesis of Metal Nanocrystals: Simple Chemistry Meets Complex Physics?
TL;DR: A comprehensive review of current research activities that center on the shape-controlled synthesis of metal nanocrystals, including a brief introduction to nucleation and growth within the context of metal Nanocrystal synthesis, followed by a discussion of the possible shapes that aMetal nanocrystal might take under different conditions.
Journal ArticleDOI
Anatase TiO(2) single crystals with a large percentage of reactive facets
Hua Gui Yang,Chenghua Sun,Shi-Zhang Qiao,Jin Zou,Gang Liu,Sean C. Smith,Hui-Ming Cheng,Gao Qing Lu +7 more
TL;DR: This work synthesized uniform anatase TiO2 single crystals with a high percentage (47 per cent) of {001} facets using hydrofluoric acid as a morphology controlling agent and demonstrates that for fluorine-terminated surfaces this relative stability is reversed.
Journal ArticleDOI
Battery materials for ultrafast charging and discharging
Byoungwoo Kang,Gerbrand Ceder +1 more
TL;DR: It is shown that batteries which obtain high energy density by storing charge in the bulk of a material can also achieve ultrahigh discharge rates, comparable to those of supercapacitors.