نتایج جستجو برای: nano sio2

تعداد نتایج: 63621  

Journal: :Catalysts 2023

A nitrogen-doped TiO2@SiO2 core/shell nano-photocatalyst (N-TiO2@SiO2) was used as an additive in photocatalytic paint and applied for the degradation of gaseous acetaldehyde under light-emitting diode (LED) visible light irradiation. N-TiO2 synthesised via solvothermal method then encapsulated by SiO2 sol-gel method. The incorporation N atom into TiO2 structure observed X-ray photoelectron spe...

Journal: :Journal of Materials Engineering and Performance 2021

The interlayer adhesion in the multilayered micro-devices is of significant importance for their electronic properties. scratch test applied here using a micro-blade sliding under linearly increased load, combined with optical and SEM visualization, to study Al2O3/GR/SiO2/Si Al2O3/hBN/GR/SiO2/Si stacks. failure interlayers determined by critical load at which sudden change coefficient friction ...

Journal: :IEEJ Transactions on Fundamentals and Materials 2006

Journal: :iranian journal of oil & gas science and technology 2014
iman mirzaie goodarzi mansour farzam mohammad reza shishesaz davood zaarei

the influence of increasing the sio2/k2o molar ratio on the electrochemical action of a waterbornepotassium silicate zinc-rich coating was investigated by means of electrochemical impedancespectroscopy (eis) and corrosion potential (ecorr) measurements. the eis results showed thatincreasing the sio2/k2o molar ratio in the range of 3.135 to 5 by the addition of nano-sio2 to theresins improved th...

2010
Qiulin Ma Lei Huang Zhixiong Guo Tobias Rossmann

The spectral shift response of optical whispering-gallery modes due to the adsorption and desorption of water molecules into a SiO2 nano-coating is investigated. This coating is applied to a silica microsphere and optical-shift measurements are made at a very low humidity level (<10%). The micro-optical coupling system is incorporated into a sealed vacuum chamber for controlled humidity testing...

2014
Christian Westermeier Adrian Cernescu Sergiu Amarie Clemens Liewald Fritz Keilmann Bert Nickel

Controlling the domain size and degree of crystallization in organic films is highly important for electronic applications such as organic photovoltaics, but suitable nanoscale mapping is very difficult. Here we apply infrared-spectroscopic nano-imaging to directly determine the local crystallinity of organic thin films with 20-nm resolution. We find that state-of-the-art pentacene films (grown...

2003
A. Bahari M. Ghanbari

Some issues such as tunneling, leakage current and light atom penetration through the film are threatening the ultra thin SiO2 be as a good dielectric for future industrial and electronic devices. Moreover, ultra fine and pure ZrO2/CrO2 are also so important in ceramic technologies. We have demonstrated a series of experiments to synthesis ZrO2 as well as CrO2 at low temperature with using sol-...

2015
Huiqing Fan Biaolin Peng Qi Zhang

(111)-oriented and random oriented Pb0.8Ba0.2ZrO3 (PBZ) perovskite relaxor ferroelectric thin films were fabricated on Pt(111)/TiOx/SiO2/Si substrate by sol-gel method. Nano-scaled antiferroelectric and ferroelectric two-phase coexisted in both (111)-oriented and random oriented PBZ thin film. High dielectric tunability (i = 75%, E = 560 kV/ cm ) and figure-of-merit (FOM ~ 236) at room temperat...

Journal: :Dalton transactions 2015
Elizabeth Polido Legaria Seda Demirel Topel Vadim G Kessler Gulaim A Seisenbaeva

The binding and release of trivalent rare earth element (REE) cations (Dy(3+), Nd(3+) and La(3+)) from solutions by a new fully characterized magnetic nano adsorbent material, consisting of iminodiacetic acid ligand (H2IDA) grafted onto SiO2 covered γ-Fe2O3 nanoparticles, was investigated. The nano adsorbent revealed a slightly higher capacity towards heavier REE and appreciable selectivity, es...

2015
Ming Gao Liran Ma Yong Liang Yuan Gao Jianbin Luo

Nanoscale scientific issues have attracted an increasing amount of research interest due to their specific size-effect and novel structure-property. From macro to nano, materials present some unique chemical reactivity that bulk materials do not own. Here we introduce a facile method to generate silicate with nanoscale control based on the establishment of a confined space between a meso/nanosc...

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