Preparation and optical properties of iron-modified titanium dioxide obtained by sol–gel method

Hreniak, Agnieszka; Gryzło, K.; Boharewicz, Bartosz; Sikora, Andrzej; Chmielowiec, J.; Iwan, Agnieszka

doi:10.1016/j.optmat.2015.03.053

Cited by 17 publications

(9 citation statements)

References 38 publications

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“…Magnetic force microscopy study illustrates the ferromagnetic nature of observed particles. The SEM images confirm the nanostructure of the catalysts [24]. Ranjit and Viswanathan [25] showed that doping TiO 2 with Fe(III) enhances its photocatalytic activity.…”

Section: Introductionmentioning

confidence: 62%

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Surface investigation and catalytic activity of iron-modified TiO2

Sohrabi

Akhlaghian

2015

J Nanostruct Chem

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Section: Introductionmentioning

confidence: 62%

“…The measurements showed that magnetic properties are more related to the nanopowders preparation method than to their grain size [23]. Hreniak et al [24] investigated the optical properties of iron-modified titanium dioxide. Titanium dioxide nanoparticles with different amount of Fe were synthesized by a sol-gel method.…”

Section: Introductionmentioning

confidence: 99%

Surface investigation and catalytic activity of iron-modified TiO2

Sohrabi

Akhlaghian

2015

J Nanostruct Chem

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“…Similar to the XRD results obtained for TiO 2 :Ag powder [38], we did not observe XRD characteristic peaks for the 3 and 5% w/w silver in TiO 2 layers. Small diffraction peak at the angle of 52.08°, coming from Ag in TiO 2 , was only observed in the case of powder with 10% w/w of Ag in titanium dioxide [45].…”

Section: Resultsmentioning

confidence: 92%

Polymer solar cells with a TiO₂:Ag layer

Iwan

Boharewicz

Hreniak

et al. 2014

Journal of Modern Optics

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Photovoltaic (PV) polymer solar cells with Ag and titanium dioxide were fabricated to improve the PV performance by increasing the amount of Ag in TiO 2 (by 3, 5, 7, and 10%). Sol-gel method was used to obtain amorphous or crystalline form of titanium dioxide layers. The solar cells with poly(3-hexylthiophene) and [6,6]-phenyl-C61-butyric acid methyl ester active layer in two various positions of titanium dioxide in device were tested. Higher PV performance was received by introducing TiO 2 with 5% of Ag between ITO and PEDOT:PSS in device and by heating the layer at 130°C. The viscosity of applied PEDOT:PSS strongly influences the values of power conversion efficiency of the constructed polymer devices with titanium dioxide.

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“…TiO 2 powder was prepared via the sol–gel technique using titanium(IV) isopropoxide (TIPO) as a precursor as was fully described in our previous paper [ 34 ]. The obtained TiO 2 powder exhibited an anatase form, which was confirmed from X-ray diffraction (XRD) experiments [ 34 ].…”

Section: Resultsmentioning

confidence: 99%

“…Titanium dioxide, due to its suitable band position, non-toxicity, low cost, and simple synthesis, is an appropriate material for modification of various metals. Its chemical stability and biocompatibility plays an important role in various applications such as gas sensors, photocatalytic hydrogen generation, photovoltaic and photo-electrochemical cells, and environmental photocatalysis [ 34 – 43 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of two new TiO₂-containing benzothiazole-based imine composites for organic device applications

Różycka¹,

Iwan²,

Bogdanowicz³

et al. 2018

Beilstein J. Nanotechnol.

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The effect of the presence of titanium dioxide in two new imines, (E,E)-(butane-1,4-diyl)bis(oxybutane-4,1-diyl) bis(4-{[(benzo[d][1,3]thiazol-2-yl)methylidene]amino}benzoate) (SP1) and (E)-N-[(benzo[d][1,3]thiazol-2-yl)methylidene]-4-dodecylaniline (SP2), on the properties and stability of imine:TiO2 composites for organic device applications were examined. The investigated titanium dioxide (in anatase form, obtained via the sol–gel method) exhibited a surface area of 59.5 m2/g according to Brunauer–Emmett–Teller theory, and its structure is a combination of both meso- and microporous. The average pore diameter calculated by the Barrett–Joyner–Halenda method was 6.2 nm and the cumulative volume of pores was 0.117 m3/g. The imine SP1 exhibited columnar organization (Col), while SP2 revealed a hexagonal columnar crystalline phase (Colhk). The imine:TiO2 mixtures in various weight ratio (3:0, 3:1, 3:2, 3:3) showed a lower energy gap and HOMO–LUMO energy levels compared to pure TiO2. This implies that TiO2 provides not only a larger surface area for sensitizer adsorption and good electron collection, but also causes a shift of the imine energy levels resulting from intermolecular interaction. Also the temperature of the phase transition was slightly affected with the increase of TiO2 concentration in imine-based composites. The changes observed in the Fourier transform middle-infrared absorption (FT-MIR) spectra confirmed the significant influence of TiO2 on structural properties of both investigated imines. Similar interactions of oxygen vacancies existing on the TiO2 surface with SP1 and SP2 were observed. The imine:TiO2 mixtures showed good air stability and reusability, which demonstrates its potential for organic device applications.

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Preparation and optical properties of iron-modified titanium dioxide obtained by sol–gel method

Cited by 17 publications

References 38 publications

Surface investigation and catalytic activity of iron-modified TiO2

Surface investigation and catalytic activity of iron-modified TiO2

Polymer solar cells with a TiO₂:Ag layer

Synthesis and characterization of two new TiO₂-containing benzothiazole-based imine composites for organic device applications

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Preparation and optical properties of iron-modified titanium dioxide obtained by sol–gel method

Cited by 17 publications

References 38 publications

Surface investigation and catalytic activity of iron-modified TiO2

Surface investigation and catalytic activity of iron-modified TiO2

Polymer solar cells with a TiO2:Ag layer

Synthesis and characterization of two new TiO2-containing benzothiazole-based imine composites for organic device applications

Contact Info

Product

Resources

About

Polymer solar cells with a TiO₂:Ag layer

Synthesis and characterization of two new TiO₂-containing benzothiazole-based imine composites for organic device applications