Anomalous size effects in nanoporous materials induced by high surface energies

2019 ◽  
Vol 34 (13) ◽  
pp. 2337-2346 ◽  
Author(s):  
Justin W. Wilkerson
Keyword(s):  
Size Effects ◽  
High Surface ◽  
Nanoporous Materials ◽  
Surface Energies ◽  
Image Position

Abstract

scholarly journals Crystal structure and size effects on the performance of Li[Ni1/3Co1/3Mn1/3]O2 cathodes

2014 ◽  
Vol 30 (2) ◽  
pp. 286-294 ◽  
Author(s):  
Jianxin Zhu ◽  
Kevin Yoo ◽  
Akhila Denduluri ◽  
Wenting Hou ◽  
Juchen Guo ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Size Effects ◽  
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Abstract

scholarly journals Dealloyed nanoporous materials with interface-controlled behavior

MRS Bulletin ◽  
2018 ◽  
Vol 43 (1) ◽  
pp. 14-19 ◽  
Author(s):  
Jörg Weissmüller ◽  
Karl Sieradzki
Keyword(s):  
Nanoporous Materials ◽  
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Abstract

Synthesis of Nanoporous Materials Al-MCM-41 from Natural Halloysite

NANO ◽  
2015 ◽  
Vol 10 (01) ◽  
pp. 1550005 ◽  
Author(s):  
Yaling Xie ◽  
Aidong Tang ◽  
Huaming Yang
Keyword(s):  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Halloysite Nanotubes ◽  
Nanoporous Materials ◽  
Molar Ratio ◽  
Molar Ratios ◽  
Naoh Solution ◽  
The One ◽  
Mcm 41

Nanoporous materials Al -MCM-41 with varying Si / Al molar ratios have been successfully synthesized from natural clay mineral halloysite nanotubes (HNTs). Hydrothermal treatment of acid-pretreated HNTs and NaOH solution resulted in the one-step synthesis of final nanoporous products by using surfactant. The effects of Si / Al molar ratios (7.7, 61.0 and 176.5) on the surface area, porosity and degree of structural order of Al -MCM-41 materials have been investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), N 2 adsorption–desorption measurements and Fourier transform infrared (FTIR) spectra techniques. The results indicated that Si / Al molar ratio had important effect on the characteristics of nanoporous materials, and Al -MCM-41 with an intermediate Si / Al molar ratio of 61.0 exhibited excellent characteristics with high degree of order, high surface area (S BET ) of 1033 m2/g and pore volume of 0.92 mL/g.

Self-healing polymers with PEG oligomer side chains based on multiple H-bonding and adhesion properties

2015 ◽  
Vol 6 (28) ◽  
pp. 5086-5092 ◽  
Author(s):  
Dandan Zhu ◽  
Qiang Ye ◽  
Xuemin Lu ◽  
Qinghua Lu
Keyword(s):  
Ambient Temperature ◽  
High Surface ◽  
Side Chain ◽  
Side Chains ◽  
Self Healing ◽  
Adhesion Properties ◽  
Surface Energies

Copolymers with a PEG oligomer side chain present high surface energies and adhesion properties; they also can quickly self-heal the crack interfaces spontaneously at ambient temperature.

scholarly journals Synthesis of high surface area TiO2 coatings on stainless steel by electrophoretic deposition

2013 ◽  
Vol 28 (15) ◽  
pp. 2023-2030 ◽  
Author(s):  
Daniel Schiemann ◽  
Pierre Alphonse ◽  
Pierre-Louis Taberna
Keyword(s):  
Stainless Steel ◽  
Surface Area ◽  
Electrophoretic Deposition ◽  
High Surface ◽  
High Surface Area ◽  
Tio2 Coatings ◽  
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Abstract

scholarly journals Size effects in indentation of hydrated biological tissues

2011 ◽  
Vol 27 (1) ◽  
pp. 245-255 ◽  
Author(s):  
Michelle L. Oyen ◽  
Tamaryn A.V. Shean ◽  
Daniel G.T. Strange ◽  
Matteo Galli
Keyword(s):  
Size Effects ◽  
Biological Tissues ◽  
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Abstract

scholarly journals Thermomechanical behavior at the nanoscale and size effects in shape memory alloys

2011 ◽  
Vol 26 (19) ◽  
pp. 2461-2469 ◽  
Author(s):  
Jose San Juan ◽  
Maria L. Nó ◽  
Christopher A. Schuh
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Size Effects ◽  
Thermomechanical Behavior ◽  
Image Position

Abstract

Enhanced Specific Heat of Silica Nanofluid

2010 ◽  
Vol 133 (2) ◽  
Author(s):  
Donghyun Shin ◽  
Debjyoti Banerjee
Keyword(s):  
Electron Microscopy ◽  
Specific Heat ◽  
Unit Volume ◽  
High Surface ◽  
High Surface Area ◽  
Lithium Carbonate ◽  
Sem Image ◽  
Surface Energies ◽  
Transmission Electron ◽  
The Stability

Silica nanoparticles (1% by weight) were dispersed in a eutectic of lithium carbonate and potassium carbonate (62:38 ratio) to obtain high temperature nanofluids. A differential scanning calorimeter instrument was used to measure the specific heat of the neat molten salt eutectic and after addition of nanoparticles. The specific heat of the nanofluid was enhanced by 19–24%. The measurement uncertainty for the specific heat values in the experiments is estimated to be in the range of 1–5%. These experimental data contradict earlier experimental results reported in the literature. (Notably, the stability of the nanofluid samples was not verified in these studies.) In the present study, the dispersion and stability of the nanoparticles were confirmed by using scanning electron microscopy (SEM). Percolation networks were observed in the SEM image of the nanofluid. Furthermore, no agglomeration of the nanoparticles was observed, as confirmed by transmission electron microscopy. The observed enhancements are suggested to be due to the high specific surface energies that are associated with the high surface area of the nanoparticles per unit volume (or per unit mass).

scholarly journals Selective Electrochemical Detection of Epinephrine Using Gold Nanoporous Film

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Dina M. Fouad ◽  
Waleed A. El-Said
Keyword(s):  
Uric Acid ◽  
Gold Electrode ◽  
High Selectivity ◽  
High Surface ◽  
High Surface Area ◽  
Nanoporous Materials ◽  
Selective Determination ◽  
Sensing Applications ◽  
Other Substances

Epinephrine (EP) is one of the important catecholamine neurotransmitters that play an important role in the mammalian central nervous system. Therefore, it is necessary to determine the change of its concentrations. Nanoporous materials have wide applications that include catalysis, energy storages, environmental pollution control, wastewater treatment, and sensing applications. These unique properties could be attributable to their high surface area, a large pore volume, and uniform pore sizes. A gold nanoporous layer modified gold electrode was prepared and applied for the selective determination of epinephrine neurotransmitter at low concentration in the presence of several other substances including ascorbic acid (AA) and uric acid (UA). The constructed electrode was characterized using scanning electron microscopy and cyclic voltammetry. The resulting electrode showed a selective detection of epinephrine with the interferences of dopamine and uric acid over a wide linear range (from 50 μM to 1 mM). The coverage of gold nanoporous on the surface of gold electrode represents a promising electrochemical sensor with high selectivity and sensitivity.

scholarly journals Thermal anisotropy enhanced by phonon size effects in nanoporous materials

2017 ◽  
Vol 110 (9) ◽  
pp. 093104 ◽  
Author(s):  
Giuseppe Romano ◽  
Alexie M. Kolpak
Keyword(s):  
Size Effects ◽  
Nanoporous Materials ◽  
Thermal Anisotropy
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