نتایج جستجو برای: titanium dioxide tio2

تعداد نتایج: 144192  

Journal: :ACS applied materials & interfaces 2015
Cheng Li Nicholas S Colella James J Watkins

Highly transparent mesoporous titanium dioxide (TiO2; anatase) thin films were prepared at room temperature via ultraviolet (UV) irradiation of hybrid polymer-TiO2 nanoparticle thin films. This approach utilized a UV-curable polymer in conjunction with the photocatalytic activity of TiO2 to form and degrade the organic component of the composite films in one step, producing films with well-cont...

Journal: :Angewandte Chemie 2014
M Hannelore Rittmann-Frank Chris J Milne Jochen Rittmann Marco Reinhard Thomas J Penfold Majed Chergui

Titanium dioxide (TiO2) is the most popular material for applications in solar-energy conversion and photocatalysis, both of which rely on the creation, transport, and trapping of charges (holes and electrons). The nature and lifetime of electron traps at room temperature have so far not been elucidated. Herein, we use picosecond X-ray absorption spectroscopy at the Ti K-edge and the Ru L3-edge...

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...

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...

2013
Kui Liu Xialu Lin Jinshun Zhao

Due to their chemical stability and nonallergic, nonirritant, and ultraviolet protective properties, titanium dioxide (TiO2) nanoparticles (NPs) have been widely used in industries such as electronics, optics, and material sciences, as well as architecture, medicine, and pharmacology. However, increasing concerns have been raised in regards to its ecotoxicity and toxicity on the aquatic environ...

Journal: :Nanoscale 2014
Junchao Huo Yanjie Hu Hao Jiang Chunzhong Li

A novel one-step, vapor-fed aerosol flame synthetic process (VAFS) has been developed to prepare Ti(3+) self-doped titanium dioxide (TiO2). The freshly formed TiO2 was in situ surface hydrogenated during the condensation stage by introducing H2 above the flame, and Ti(3+) ions were created near the surface of TiO2. The relative content of Ti(3+) ions near the surface of TiO2 is estimated to be ...

2015
Huisu Jeong Hui Song Ryeri Lee Yusin Pak Yogeenth Kumaresan Heon Lee Gun Young Jung

We present a holey titanium dioxide (TiO2) film combined with a periodically aligned ZnO nanorod layer (ZNL) for maximum light utilization in dye-sensitized solar cells (DSCs). Both the holey TiO2 film and the ZNL were simultaneously fabricated by imprint technique with a mold having vertically aligned ZnO nanorod (NR) array, which was transferred to the TiO2 film after imprinting. The orientat...

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