Journal ArticleDOI
Nanomaterials of high surface energy with exceptional properties in catalysis and energy storage
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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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An overview: Facet-dependent metal oxide semiconductor gas sensors
Xing Gao,Tong Zhang +1 more
TL;DR: In this article, a review of recent efforts on engineering crystal structures with exposed high-energy facets of MOS nanomaterials and their improved gas-sensitive performance is provided, focusing on six kinds of common gas sensitive MOS including ZnO, SnO, TiO2, α-Fe2O3, NiO and Cu2O.
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Engineering Catalytic Active Sites on Cobalt Oxide Surface for Enhanced Oxygen Electrocatalysis
Xiaopeng Han,Guowei He,Yu He,Jinfeng Zhang,Xuerong Zheng,Lanlan Li,Cheng Zhong,Wenbin Hu,Yida Deng,Tianyi Ma,Tianyi Ma +10 more
TL;DR: In this article, a controllable synthesis of surface-tailored Co3O4 nanocrystals including nanocube (NC), nanotruncated octahedron (NTO), and nanopolyhedron anchored on nitrogen-doped reduced graphene oxide (N-rGO), through a facile and template-free hydrothermal strategy, is provided.
Journal ArticleDOI
Imaging the electrocatalytic activity of single nanoparticles.
Xiaonan Shan,Ismael Díez-Pérez,Ismael Díez-Pérez,Luojia Wang,Peter Wiktor,Ying Gu,Lihua Zhang,Wei Wang,Jin Lu,Jin Lu,Shaopeng Wang,Qihuang Gong,Jinghong Li,Nongjian Tao +13 more
TL;DR: It is shown that a plasmonic-based electrochemical current-imaging technique can simultaneously image and quantify the electrocatalytic reactions of an array of 1.6 × 10(5) platinum nanoparticles printed on an electrode surface, which could facilitate high-throughput screening of the catalytic activities of nanoparticles.
Journal ArticleDOI
Growth of metal-metal oxide nanostructures on freestanding graphene paper for flexible biosensors
TL;DR: In this article, a flexible electrochemical sensor fabricated by depositing high-density Pt nanoparticles on freestanding reduced graphene oxide paper (rGOP) carrying MnO2 nanowire networks is reported.
Journal ArticleDOI
Atomic layer deposition-Sequential self-limiting surface reactions for advanced catalyst "bottom-up" synthesis
TL;DR: In this article, a review of the surface chemistry and growth behavior of ALD on metal surfaces is presented, and the methods of tailoring the catalytic performance of metal catalysts including activity, selectivity and stability, through selective blocking of the low-coordination sites of metal nanoparticles, the confinement effect, and formation of new metal-oxide interfaces.
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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.