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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The morphology evolution, tunable down-conversion luminescence, and energy transfer of [CaY]F2 crystals doped with Li+/Ce3+/Tb3.
TL;DR: Octahedral [CaY]F2 crystals with an average particle size of 1 μm were synthesized via a mild one-step hydrothermal route without employing any surfactants, resulting in the as-synthesized phosphors having great application potential in many optoelectronic device fields, such as in displays and multicolor lighting.
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Structural optimization and segregation behavior of quaternary alloy nanoparticles based on simulated annealing algorithm
TL;DR: In this article, the authors employ the simulated annealing algorithm to systematically explore the stable structure and segregation behavior of tetrahexahedral Pt-Pd-Cu-Au quaternary alloy nanoparticles.
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Synthesis and characterization of CuFeS 2 and Se doped CuFeS 2−x Se x nanoparticles
Huajian Yu,Jianhua Xu,Yanyan Hu,Huadi Zhang,Cong Zhang,Chengcheng Qiu,Xuping Wang,Bing Liu,Lei Wei,Jing Li +9 more
TL;DR: In this article, the influence of Se-doping on grain size, structure, morphology and energy gap of chalcopyrite nanoparticles was explored by XRD, FTIR, BET, SEM and DRUVS.
Journal ArticleDOI
The role of citric acid and ascorbic acid in morphology control of palladium nanocrystals: A molecular dynamics and density functional theory study
Jeffrey Yue,Zheng Du,Minhua Shao +2 more
TL;DR: In this paper, the effect of surfactants on the synthesis of shape-controlled palladium (Pd) nanocrystals was studied using computational simulation methods, and it was found that the functional groups in surfactant molecules played an important role in the specific adsorption on Pd surfaces.
Journal ArticleDOI
A Convenient and Sensitive Colorimetric Iodide Assay Based on Directly Inducing Morphological Transformation of Gold Nanostars
Rongju Zhou,Xiaohui Huang,Qingxiao An,Weizhen Xu,Yi LIu,Dong Xu,Suyan Wang,Qinlu Lin,Jianglin Zhang +8 more
TL;DR: In this paper, a colorimetric assay for highly sensitive detection of iodide by using gold nanostars (GNSs) as probes is proposed, which relies on that iodide directly changes the morphology of GNSs and alters their longitudinal localized surface plasmon resonance (LSPR) without surface modifications and the use of other reagents.
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.
Journal ArticleDOI
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.