نتایج جستجو برای: tio2 fe nanoparticles

تعداد نتایج: 201267  

2014
Saeedeh Hemmati Borji Simin Nasseri Amir Hossein Mahvi Ramin Nabizadeh Amir Hossein Javadi

In this study Fe (III)-doped TiO2 nanoparticles were synthesized by sol-gel method at two atomic ratio of Fe/Ti, 0.006 and 0.034 percent. Then the photoactivity of them was investigated on degradation of phenol under UV (<380 nm) irradiation and visible light (>380 nm). Results showed that at appropriate atomic ratio of Fe to Ti (% 0.034) photoactivity of Fe(III)-doped TiO2 nanoparticles increa...

Journal: :international journal of nanoscience and nanotechnology 2015
m. ramazani m. farahmandjou t.p. firoozabadi

nano-sized titanium dioxide tio2 powder was prepared by new wet chemical route from its precursor titanium (iv) chloride (ticl4) as precursor with isopropoxy alcohol in presence of nitric acid under ambient condition. their morphologies, phase compositions and components of the tio2 nanoparticles were characterized by transmission electron microscopy (tem), field emission scanning electron micr...

2016
Yeonwoo Kim Sena Yang Eun Hee Jeon Jaeyoon Baik Namdong Kim Hyun Sung Kim Hangil Lee

To design a high-performance photocatalytic system with TiO2, it is necessary to reduce the bandgap and enhance the absorption efficiency. The reduction of the bandgap to the visible range was investigated with reference to the surface distortion of anatase TiO2 nanoparticles induced by varying Fe doping concentrations. Fe-doped TiO2 nanoparticles (Fe@TiO2) were synthesized by a hydrothermal me...

2017
Sena Yang Hangil Lee

The modified TiO2 nanoparticles (NPs) to enhance their catalytic activities by doping them with the five transition metals (Cr, Mn, Fe, Co, and Ni) have been investigated using various surface analysis techniques such as scanning electron microscopy (SEM), Raman spectroscopy, scanning transmission X-ray microscopy (STXM), and high-resolution photoemission spectroscopy (HRPES). To compare cataly...

2015
Xiaoling Yang Wei Chen Jianfei Huang Ying Zhou Yihua Zhu Chunzhong Li

Herein, a ternary nanocomposite with TiO2 nanoparticles anchored on reduced graphene oxide (rGO)-encapsulated Fe3O4 spheres (Fe3O4@rGO@TiO2) is presented as a high efficient heterogeneous catalyst for photo-Fenton degradation of recalcitrant pollutants under neutral pH. Fe3O4@rGO@TiO2 was synthesized by depositing TiO2 nanoparticles on the surface of the Fe3O4 spheres wrapped by graphene oxide ...

زارع, محمد, ندافی, کاظم,

Background and Aim: Specific and unique characteristics of nanoparticles may entail specific and unique hazards. In addition, they may also exhibit toxicity under certain conditions. This study was conducted to investigate the toxicity of phenol-exposed and phenol-unexposed nano-TiO2 and nano-Fe/TiO2 particles. Materials and Methods: Stock solutions of the afore-mentioned nanoparticles were pr...

Journal: :Environmental science & technology 2007
Jeongsoo Choi Oksun Kim Seung-Yeop Kwak

This paper presents an approach to the suppression of the emission of dioxin and its precursors as a result of the co-incineration of poly (vinyl chloride) (PVC) with TiO2-encapsulating polystyrene (TEPS), in which TiO2 nanoparticles with the capacity to adsorb dioxin and its precursors are encapsulated without significant agglomeration. Field-emission scanning electron microscopy (FE-SEM) and ...

ژورنال: سلامت و محیط زیست 2011
جوادی, امیر حسین, محوی, امیر حسین, ناصری, سیمین, نبی زاده, رامین, همتی برجی, سعیده,

Backgrounds and Objectives: Phenol and phenolic compounds are widely used in industry and daily liFe, and are of high interest due to stability in the environment, dissolution ability in water and health problems. In this regard, phenol removal from water is of high importance. The purpose of this study was to investigate the efficiency of photodegradation process for removal of phenol from aqu...

Journal: :analytical and bioanalytical chemistry research 0
morteza akhond professor massoumi laboratory, department of chemistry, faculty of sciences, shiraz university, shiraz 71454, iran ghodratollah absalan professor massoumi laboratory, department of chemistry, faculty of sciences, shiraz university, shiraz 71454, iran ameneh tafakori professor massoumi laboratory, department of chemistry, faculty of sciences, shiraz university, shiraz 71454, iran hamid ershadifar professor massoumi laboratory, department of chemistry, faculty of sciences, shiraz university, shiraz 71454, iran

a carbon ionic liquid electrode (cile) modified with tio2-fe nanoparticles was constructed by incorporating tio2-fe nanoparticles into the paste matrix. under the optimized experimental conditions, using differential pulse voltammetry (dpv), the oxidation of thiocyanate and oxalate were occurred at potentials of 0.740 v and 1.010 v, respectively, at the surface of the modified electrode. observi...

2016
M. Akhond

A carbon ionic liquid electrode (CILE) modified with TiO2-Fe nanoparticles was constructed by incorporating TiO2-Fe nanoparticles into the paste matrix. Under the optimized experimental conditions, using differential pulse voltammetry (DPV), the oxidation of thiocyanate and oxalate were occurred at potentials of 0.740 V and 1.010 V, respectively, at the surface of the modified electrode. Observ...

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