نتایج جستجو برای: doped tio2 nanophotocatalyst

تعداد نتایج: 68880  

2015
Ren Ren Zhenhai Wen Shumao Cui Yang Hou Xiaoru Guo Junhong Chen

Photocatalysts show great potential in environmental remediation and water splitting using either artificial or natural light. Titanium dioxide (TiO2)-based photocatalysts are studied most frequently because they are stable, non-toxic, readily available, and highly efficient. However, the relatively wide band gap of TiO2 significantly limits its use under visible light or solar light. We herein...

Journal: :Nanoscale 2014
Wenguang Wang Haiyan Zhang Rong Wang Ming Feng Yiming Chen

A TiO2 film photoanode with gradient structure in nanosheet/nanoparticle concentration on the fluorine-doped tin oxide glass from substrate to surface was prepared by a screen printing method. The as-prepared dye-sensitized solar cell (DSSC) based on the gradient film electrode exhibited an enhanced photoelectric conversion efficiency of 6.48%, exceeding that of a pure nanoparticle-based DSSC w...

Journal: :Nanoscale 2014
Jung Tae Park Won Seok Chi Harim Jeon Jong Hak Kim

TiO2 nanoparticles are surface-modified via atom transfer radical polymerization (ATRP) with a hydrophilic poly(oxyethylene)methacrylate (POEM), which can coordinate to the Ag precursor, i.e. silver trifluoromethanesulfonate (AgCF3SO3). Following the reduction of Ag ions, a Nb2O5 doping process and calcination at 450 °C, bi-functional Nb-doped TiO2/Ag ternary nanostructures are generated. The r...

2016
Temesgen Achamo O. P. Yadav

Photocatalytic oxidation using semiconductor nanoparticles is an efficient, eco-friendly, and cost-effective process for the removal of organic pollutants, such as dyes, pesticides, phenols, and their derivatives in water. In the present study, nanosize Ag-N-P-tridoped titanium(IV) oxide (TiO2) was prepared by using sol-gel-synthesized Ag-doped TiO2 and soybean (Glycine max) or chickpea (Cicer ...

Journal: :Nanoscale 2015
Wei Cheng Felix Rechberger Darinka Primc Markus Niederberger

TiO2 has been considered as a promising anode material for lithium ion batteries. However, its poor rate capability originating from the intrinsically low lithium ion diffusivity and its poor electronic conductivity hampers putting such an application into practice. Both issues can be addressed by nanostructure engineering and conductive surface coating. Herein, we report a template-assisted sy...

2002
S. I. Shah W. Li C.-P. Huang O. Jung

The metallorganic chemical vapor deposition method was successfully used to synthesize pure TiO2 and Nd3 -, Pd2 -, Pt4 -, and Fe3 -doped TiO2 nanoparticles. Polycrystalline TiO2 structure was verified with x-ray diffraction, which showed typical characteristic anatase reflections without any separate dopant-related peaks. Transmission electron microscopy observations confirmed the existence of ...

اسرافیلی, علی, بشام, محمد, جنیدی جعفری, احمد, کرمانی, مجید,

Background and purpose: Phenol is amongst the dangerous environmental pollutants with wide applications in today’s life and industry. Nanoparticles have recently received attention for decomposition of these organic compounds. The aim of this study was to evaluate the efficiency of silver doped titanium dioxide stabilized on concrete bed via photocatalytic process Ag-TiO2/UV in removal of...

Journal: :Physical chemistry chemical physics : PCCP 2013
Penelope Carmichael David Hazafy Davinder S Bhachu Andrew Mills Jawwad A Darr Ivan P Parkin

Boron-doped titanium dioxide (B-TiO2) films were deposited by atmospheric pressure chemical vapour deposition of titanium(iv) chloride, ethyl acetate and tri-isopropyl borate on steel and fluorine-doped-tin oxide substrates at 500, 550 and 600 °C, respectively. The films were characterised using powder X-ray diffraction (PXRD), which showed anatase phase TiO2 at lower deposition temperatures (5...

Journal: :journal of nanostructures 2015
m. behpour m. mehrzad s. m. hosseinpour-mashkani

in this research, the thin films of n-s doped titanium dioxide (tio2) were successfully prepared by simple sol-gel method in the presence of tetrabutylorthotitanate as a starting reagent. furthermore, titanium dioxide (tio2) was functionalized with thiourea. furthermore, n-s doped titanium dioxides (nsto) were fixed on glass balls by glass balls fixed-bed reactor system. besides, the effect of ...

Journal: :Dalton transactions 2014
Jony Saha Anuradha Mitra Anirban Dandapat Goutam De

Titanium dioxide (TiO2) incorporated ordered 2D hexagonal mesoporous silica (SiO2) films on a glass substrate were fabricated for use as a catalytic nanoreactor. Films were prepared using a tetraethyl orthosilicate (TEOS) derived SiO2 sol and a commercially available dispersion of TiO2 nanoparticles (NPs) in the presence of pluronic P123 as the structure directing agent. The effect of TiO2 dopi...

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