نتایج جستجو برای: crystalline tio2

تعداد نتایج: 62003  

A sol-gel technique under ultrasonic irradiation was applied to synthesize ZrO2/TiO2/ZnOnanocomposites. X-ray diffraction analysis confirmed the successful synthesis of nanocomposites. The strain and crystalline size values of ZrO2/TiO2/ZnO nanocomposites are estimated to be 9.98×10-4 and 17.66 nm, respectively. The linear absorption coefficient of ZrO2/TiO2/ZnO nanocomposites was measure...

2016
Shuai Cao Ye Wang Lin Cao Yu Wang Bingpeng Lin Wei Lan Baocheng Cao

OBJECTIVE Different methods have been utilized to prevent enamel demineralization and other complications during orthodontic treatment. However, none of these methods can offer long-lasting and effective prevention of orthodontic complications or interventions after complications occur. Considering the photocatalytic effect of TiO2 on organic compounds, we hoped to synthesize a novel bracket wi...

2011
X. Feng X. Wang X. Chen Y. Yue

In this paper, anatase titanium dioxide (TiO2) thin films 60 lm thick are fabricated using the electrospinning technique. The prepared thin films are composed of interconnected anatase TiO2 nanofibers. The transient electro-thermal technique, combined with a temperature–resistance calibration procedure, provides a full spectrum study which examines the relationship between the film’s thermal di...

2015
Ahmed Al-Haddad Zhijie Wang Rui Xu Haoyuan Qi Ranjith Vellacheri Ute Kaiser Yong Lei

Instead of investigating the quantum effect that influences the absorption band edge of TiO2 nanostructures, herein we report that geometrical parameters can also be utilized to manipulate the optical band gap of the TiO2 nanotube arrays. Hexagonal arrays of TiO2 nanotubes with an excellent crystalline quality were fabricated by techniques combining anodic aluminum oxide templates and atomic la...

2016
S. Sharmila Juliet

Pure nanocrystalline titanium Oxide (TiO2) powder has been synthesized by the sol-gel technique using titanium tetra-isopropoxide as the starting precursor. As-prepared samples were calcined at different temperatures, 400, 600, 800 and 900°C. X-ray diffraction (XRD) analysis was used to find the crystalline structure and changes in the polymorphs with calcination. The as-synthesized TiO2 powder...

2015
Hao Wang Baoyuan Wang Jichao Yu Yunxia Hu Chen Xia Jun Zhang Rong Liu

The single-crystalline TiO2 nanorod arrays with rutile phase have attracted much attention in the dye sensitized solar cells (DSSCs) applications because of their superior chemical stability, better electron transport properties, higher refractive index and low production cost. However, it suffers from a low surface area as compared with TiO2 nanoparticle films. In order to enlarge the surface ...

2013
Xing Yi Ling Ruoxue Yan Sylvia Lo Dat Tien Hoang Chong Liu Melissa A. Fardy Sher Bahadar Khan Abdullah M. Asiri Salem M. Bawaked Peidong Yang

A novel Ag-alumina hybrid SERS platform has been designed for the spectroscopic detection of surface reactions in steady state. Single crystalline and faceted silver (Ag) nanoparticles with strong light scattering were prepared in large quantity, which enables their reproducible self-assembly into large scale monolayers of Raman sensor arrays by Langmuir-Blodgett technique. The close packed sen...

Journal: :Nanoscale 2014
Hao Wu Jing Geng Yuhang Wang Yanli Wang Zheng Peng Gengfeng Zheng

The conversion of solar energy with simultaneous electric energy storage provides a promising means for optimizing energy utilization efficiency and reducing device volume. In this paper, a 3-dimensional mesoporous carbon coated branched TiO2 nanowire composite is rationally designed for direct conversion and storage of solar energy as electric double-layer capacitive energy. The 1-dimensional,...

2016
Amandeep Singh Jorma Vihinen Erkka Frankberg Leo Hyvärinen Mari Honkanen Erkki Levänen

This paper aims to introduce small angle X-ray scattering (SAXS) as a promising technique for measuring size and size distribution of TiO2 nanoparticles. In this manuscript, pulsed laser ablation in liquids (PLAL) has been demonstrated as a quick and simple technique for synthesizing TiO2 nanoparticles directly into deionized water as a suspension from titanium targets. Spherical TiO2 nanoparti...

2003
Cristiane B. Rodella Valmor R. Mastelaro

The influence of the vanadium load and calcination temperature on the structural characteristics of the V2O5/TiO2 system was studied by X-ray diffraction and X-ray absorption spectroscopy (XAS) techniques. Samples of the V2O5/TiO2 system were prepared by the sol–gel method under acid conditions and calcined at different temperatures. The rutile phase was found to predominate in pure TiO2 calcin...

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