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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Ultrathin PtPd-Based Nanorings with Abundant Step Atoms Enhance Oxygen Catalysis.
Yingjun Sun,Yingjun Sun,Xu Zhang,Mingchuan Luo,Xu Chen,Lei Wang,Yingjie Li,Mingqiang Li,Yingnan Qin,Yingnan Qin,Chunji Li,Nuoyan Xu,Gang Lu,Peng Gao,Shaojun Guo +14 more
TL;DR: The theoretical calculations reveal that the oxygen adsorption energy can be optimized under the presence of step atoms exposed on the edge and ligand effect induced by Co, and the PtPdCo NRs are stable under ORR conditions with negligible changes after 30 000 cycles.
Journal ArticleDOI
Comparison Study on the Stability of Copper Nanowires and Their Oxidation Kinetics in Gas and Liquid
TL;DR: This work systematically study the stability of copper nanowires (CuNWs) in the liquid and gas phase by monitoring the change of morphology, phase, and valence state of CuNWs during storage.
Journal ArticleDOI
Electrochemical supercapacitor performance of SnO2 quantum dots
TL;DR: In this paper, the performance of small size quantum dots (QDs) was compared with larger size NPs of size 25-nm in terms of capacitance loss after 1000 cycles of charging discharging.
Journal ArticleDOI
Oxygen-induced doping on reduced PEDOT
Evangelia Mitraka,Mohammad Jafari,Mikhail Vagin,Xianjie Liu,Mats Fahlman,Thomas Ederth,Magnus Berggren,Magnus P. Jonsson,Xavier Crispin +8 more
TL;DR: The study demonstrates the decoupling of conductivity from electrocatalysis (as an extrinsic phenomenon) yielding the evidence of doping of the polymer by oxygen during ORR, ensuring PEDOT to act as an electrode for the ORR.
Journal ArticleDOI
High-efficiently visible light-responsive photocatalysts: Ag3PO4 tetrahedral microcrystals with exposed {111} facets of high surface energy
TL;DR: In this paper, a single-crystalline tetrahedral Ag3PO4 microcrystals with exposed {111} facets was successfully synthesized via a facile wet chemical method.
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.
Journal ArticleDOI
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.