نتایج جستجو برای: titanum dioxide tio2

تعداد نتایج: 115387  

2015
Yukiko Yoshiura Hiroto Izumi Takako Oyabu Masayoshi Hashiba Tatsunori Kambara Yohei Mizuguchi Byeong Woo Lee Takami Okada Taisuke Tomonaga Toshihiko Myojo Kazuhiro Yamamoto Shinichi Kitajima Masanori Horie Etsushi Kuroda Yasuo Morimoto

In order to investigate the pulmonary toxicity of titanium dioxide (TiO2) nanoparticles, we performed an intratracheal instillation study with rats of well-dispersed TiO2 nanoparticles and examined the pulmonary inflammation and histopathological changes in the lung. Wistar Hannover rats were intratracheally administered 0.2 mg (0.66 mg/kg) and 1.0 mg (3.3 mg/kg) of well-dispersed TiO2 nanopart...

2014
N. M. Ganesan N. Muthukumarasamy R. Balasundaraprabhu T. S. Senthil

Titanium dioxide nanocrystals were synthesized by sol-gel method at room temperature. Titanium isoprophoxide and absolute ethanol were used as precursors to prepare the sol. The pH of the solution was adjusted by adding nitric acid and sodium hydroxide solution. The prepared TiO2 nanocrystals were annealed at 325°C, 425°C and 525°C respectively. The effect of pH on the surface morphology and st...

Journal: :Acta chimica Slovenica 2010
Opara Hočevar Marko Berginc Marko Topič

A novel titanium dioxide paste based on Pechini sol-gel method and nanocrystalline TiO2 powder has been successfully developed and tested. The paste enables the formation of sponge like structure of the TiO2 layer i.e. highly porous and at the same time well connected TiO2 network. The layers have been used to assemble dye sensitized solar cells (DSSC) with two ruthenium complex based dyes, N71...

Journal: :Journal of environmental biology 2010
Suja P Devipriya Suguna Yesodharan

Photocatalytic degradation of chemical pollutants in water was investigated using semiconductor oxide catalysts, zinc oxide (ZnO) and titanium dioxide (TiO2) and phenol as the substrate. Influence of various parameters such as characteristics of the catalyst, irradiation time, substrate and catalyst concentrations, pH etc. has been studied and optimum conditions for the complete degradation of ...

2017
Jie J. Yao Eric A. Lewallen William H. Trousdale Wei Xu Roman Thaler Christopher G. Salib Nicolas Reina Matthew P. Abdel David G. Lewallen Andre J. van Wijnen

We evaluated recently published articles relevant to the biological effects of titanium dioxide (TiO2) particles on local endogenous cells required for normal bone homeostasis, repair, and implant osseointegration. Structural characteristics, size, stability, and agglomeration of TiO2 particles alter the viability and behavior of multiple bone-related cell types. Resulting shifts in bone homeos...

2016
L. Q. Guo Y. W. Hu B. Yu E. Davis R. Irvin X. G. Yan D. Y. Li

Titanium dioxide (TiO2) nanotubes are promising for a wide variety of potential applications in energy, biomedical and environmental sectors. However, their low mechanical strength and wide band gap limit their widespread technological use. This article reports our recent efforts to increase the mechanical strength of TiO2 nanotubes with lowered band gap by immobilizing a peptide of D-amino K12...

2014
Gang Guo Qiwu Shi Yanbing Luo Rangrang Fan Liangxue Zhou Zhiyong Qian Jie Yu

This study investigated ageing-resistant properties of carboxyl-terminated polyester (polyethylene glycol terephthalate) composites modified with nanoscale titanium dioxide particles (nano-TiO2). The nano-TiO2 was pretreated by a dry coating method, with aluminate coupling agent as a functional grafting additive. The agglomeration resistance was evaluated, which exhibited significant improvemen...

2016
Yan Wang Changjiao Sun Xiang Zhao Bo Cui Zhanghua Zeng Anqi Wang Guoqiang Liu Haixin Cui

Nanometer-sized titanium dioxide (TiO2) is an environmentally friendly optical semiconductor material. It has wide application value in many fields due to its excellent structural, optical, and chemical properties. The photocatalytic process of nano-TiO2 converts light energy into electrical or chemical energy under mild conditions. In recent years, the study and application of nano-TiO2 in the...

2017
Sun-Hwa Nam Yu-Jin Shin Youn-Joo An

Zinc oxide nanoparticles (ZnO NPs) and titanium dioxide nanoparticles (TiO2 NPs) are well known as photoreactive nanoparticles (NPs). Various phototoxicities of ZnO NPs and TiO2 NPs were reported on several organisms. It was still necessary to evaluate the toxicity of photoreactive ZnO NPs and TiO2 NPs due to species-specific effects under various irradiation conditions. We compared the acute t...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید