نتایج جستجو برای: فتوکاتالیست tio2

تعداد نتایج: 22813  

2014
Raman Vedarajan Shoto Ikeda Noriyoshi Matsumi

TiO2/WOx nanotubes have unique photo-energy retention properties that have gathered scientific interest. Herein, we report the synthesis, morphological characterization, and the electrochemical characterization of TiO2/WOx nanotubes compared with pure TiO2 nanotubes, prepared by anodization technique. Significant structural differences were not observed in TiO2/WOx nanotubes as observed by usin...

2007
Ajay K. Baranwal Naotaka Fujikawa Terumi Nishimura Takuya Morimoto Yuhei Ogomi K Asagoe

TiO2 anatase nanowires have been prepared by a hydrothermal process followed by post-heat treatment in air. TiO2 nanoparticle/TiO2 nanowire composite electrodes were prepared for dye-sensitized solar cells (DSC) in order to improve light-to-electricity conversion efficiency. The TiO2 NP/TiO2 NW composite cells showed higher DSC performance than ordinary nanoparticle cells and fully nanowire cel...

2013
James C. Bonner Rona M. Silva Alexia J. Taylor Jared M. Brown Susana C. Hilderbrand Vincent Castranova Dale Porter Alison Elder Günter Oberdörster Jack R. Harkema Lori A. Bramble Terrance J. Kavanagh Dianne Botta Andre Nel Kent E. Pinkerton

BACKGROUND Engineered nanomaterials (ENMs) have potential benefits, but they also present safety concerns for human health. Interlaboratory studies in rodents using standardized protocols are needed to assess ENM toxicity. METHODS Four laboratories evaluated lung responses in C57BL/6 mice to ENMs delivered by oropharyngeal aspiration (OPA), and three labs evaluated Sprague-Dawley (SD) or Fish...

Journal: :Physical chemistry chemical physics : PCCP 2015
Libin Yang Xiaoyu Qin Xin Jiang Mengdi Gong Di Yin Yingjiu Zhang Bing Zhao

In this paper, TiO2 nanoparticles (NPs) with different crystallinity served as SERS-active substrates for SERS detection of ciprofloxacin (CIP) drug molecules for the first time. CIP is close to the surface of the TiO2 substrate through the carboxyl group. The mutual SERS enhancement behaviors between CIP molecules and TiO2 NPs were discovered, which are attributed to the contribution of the Ti...

2017
Jiao-xia Zhang Si Liu Chao Yan Xiao-jing Wang Lei Wang Ya-ming Yu Shi-yun Li

Considering the excellent solubility of pyrrolidone ring organic compounds, the synthesized N(trimethoxysilyl) propyl-N-methyl-2-pyrrolidone chlorides was tethered onto titanium dioxide (TiO2) nanoparticles to improve dispersion of TiO2, and then polyethylene oxide (PEO) oligomer through ion exchange embraced the tethered TiO2 to obtain a novel self-suspended hairy TiO2 nanomaterials without an...

2016
Dejian Chen Liling Zou Shunxing Li Fengying Zheng

Modification of titanium dioxide (TiO2) for H2 generation is a grand challenge due to its high chemical inertness, large bandgap, narrow light-response range and rapid recombination of electrons and holes. Herein, we report a simple process to prepare nanospherical like reduced graphene oxide (NS-rGO) decorated TiO2 nanoparticles (NS-rGO/TiO2) as photocatalysts. This modified TiO2 sample exhibi...

2015
Muhammad Wajid Shah Yunqing Zhu Xiaoyun Fan Jie Zhao Yingxuan Li Sumreen Asim Chuanyi Wang

A facile hydrothermal approach has been developed to prepare defective TiO2-x nanocrystals using Ti(III)-salt as a precursor and L-ascorbic acid as reductant and structure direction agent. The prepared TiO2-x nanocrystals are composed of a highly crystallized TiO2 core and a disordered TiO2-x outer layer, possessing high surface area, controlled oxygen vacancy concentration and tunable bandgap ...

Journal: :Ultrasonics sonochemistry 2015
Alireza Khataee Mohsen Sheydaei Aydin Hassani Mojtaba Taseidifar Semra Karaca

The sonocatalytic performance of the synthesized TiO2/Montmorillonite K10 (TiO2/MMT) nanocomposite was studied in removal of Basic Blue 3 (BB3) from water. The TiO2/MMT nanocomposite was prepared by hydrothermal method. Scanning electron microscope, X-ray diffraction and Fourier transform infrared were used to characterize the synthesized nanocomposite. The average size of TiO2 nanoparticles de...

Journal: :Nanoscale research letters 2018
Yulong Liao Botao Yuan Dainan Zhang Xiaoyi Wang Yuanxun Li Qiye Wen Huaiwu Zhang Zhiyong Zhong

In this paper, a facile method was proposed to load CeO2 nanoparticles (NPs) on anodic TiO2 nanotube (NT) arrays, which leads to a formation of CeO2/TiO2 heterojunctions. Highly ordered anatase phase TiO2 NT arrays were fabricated by using anodic oxidation method, then these individual TiO2 NTs were used as tiny "nano-containers" to load a small amount of Ce(NO3)3 solutions. The loaded anodic T...

ژورنال: :فصلنامه علمی- پژوهشی آب و فاضلاب 2012
پویا ارباب محسن سعیدی حسین فخرایی

در این تحقیق تجزیه ترکیب ارگانوفسفره تری اتیل فسفات با استفاده از نانوفتوکاتالیست دی اکسید تیتانیوم و به کارگیری اشعه فرابنفش بررسی شد. به این منظور تأثیر پارامترهایی از قبیل غلظت آلودگی، غلظت نانوکاتالیست، ph محلول و شدت تابش فرابنفش به ترتیب در بازه های 10 تا 50 میلی گرم در لیتر، 0 تا 100 میلی گرم در لیتر، 2 تا 12 و 30 تا 90 وات بر فرایند فتوکاتالیست مورد مطالعه قرار گرفت. همچنین جذب نانوفتوک...

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