نتایج جستجو برای: calcium titanate

تعداد نتایج: 170772  

Journal: :International Journal of Physical Sciences 2016

The effects of TiO2 addition on properties of alumina spinel refractory castables werer investigated in this research. For this purpose three different composition with 0, 6 and 9 perecent TiO2,  (SP), (SP-6T) and (SP-9T),  were preparedin order to test and measure the properties of the castables. Then the samples were sintered from 1000-1600ºC in an electric furnace. The characterization resul...

Journal: :Journal of metals, materials and minerals 2022

Calcium copper titanate (CaCu3Ti4O12, CCTO) has been synthesized utilizing eggshell waste as a source of calcium through the hydrothermal route, followed by annealing treatment at temperatures 950°C and 1050°C. The sample with 1050°C is named CTO-A CCTO-B, respectively. structure, microstructure, dielectric properties CCTO samples were investigated. X-ray diffraction analysis results confirmed ...

2016
Chapman Luo Lanagan Hopwood

Arrays of dielectric resonators—illuminated by an antenna—are used to ignite and sustain multiple microwave plasmas in parallel. Calcium titanate cylindrical resonators were arranged in a linear array with separation distances between 0.5 and 5 mm. The operating frequency was near the HEM111 resonance of 1.1 GHz. Paschen curves of the breakdown field and voltage in argon atmosphere are consiste...

Journal: :Chemical communications 2004
Hiromasa Tokudome Masahiro Miyauchi

Layer-by-layer growth of titanate nanotubes on glass substrates was achieved by alternate layer deposition using an aqueous solution of colloidal titanate nanotubes and that of a polycation. Even a single layer thin film of titanate nanotube shows high photoinduced hydrophilicity.

Journal: :Physical chemistry chemical physics : PCCP 2014
P Pusztai R Puskás E Varga A Erdőhelyi Á Kukovecz Z Kónya J Kiss

Gold nanoparticles were prepared and characterized on protonated (H-form) titanate nanotubes (TiONTs) and nanowires (TiONWs). The chemical nature and morphology of gold particles were monitored by X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, X-ray diffraction (XRD) and high resolution electron microscopy (HRTEM). The optical properties of Au-containing titanate nanowires were exp...

2018
Lawrence A. Crosby Bor-Rong Chen Robert M. Kennedy Jianguo Wen Kenneth R. Poeppelmeier Michael J. Bedzyk Laurence D. Marks

Through high-resolution electron microscopy, the surface structure of barium titanate and strontium titanate nanoparticles are found to be terminated by a TiO2 double layer. These results confirm prior observations of TiO2-rich surface reconstructions on strontium titanate nanoparticles made hydrothermally at high pH and single crystals prepared with wet chemical etching. Of all the reconstruct...

Journal: :Scientific reports 2016
Tae Woo Kim In Young Kim Dae-Hwan Park Jin-Ho Choy Seong-Ju Hwang

A universal technology for the encapsulative protection of unstable anionic species by highly stable layered metal oxide has been developed via the surface modification of a metal oxide nanosheet. The surface anchoring of (3-aminopropyl)triethoxysilane (APTES) on exfoliated titanate nanosheet yields a novel cationic metal oxide nanosheet, which can be universally used for the hybridization with...

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