Fe(<scp>iii</scp>) induced structural, optical, and dielectric behavior of cetyltrimethyl ammonium bromide stabilized strontium stannate nanoparticles synthesized by a facile wet chemistry route

Kumar, Astakala Anil; Кумар, Ашок; Quamara, J. K.; Dillip, G.R.; Joo, Sang Woo; Kumar, Jitendra

doi:10.1039/c4ra16775a

Cited by 37 publications

(24 citation statements)

References 38 publications

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“…These were dissolved in de‐ionized water separately and mixed afterwards, which presumably led to the formation of hydroxide. Subsequently, surfactant CTAB (cetyltrimethylammonium bromide, C 16 H 33 N(CH 3 ) 3 Br) solution was added to the former solution, which stabilizes the grown nanoparticles as discussed before in our previous study on SrSnO 3 . The resultant solution is stirred around 100 °C for 4 h to obtain the gel and is dried at 120 °C for 2 h. These powders were then rinsed several times with de‐ionized water and were decomposed at 630 °C for 2 h in air to get the La (0, 2, 4, 6, and 8 at.%) containing BaSnO 3 (BSO) nanoparticles.…”

Section: Methodsmentioning

confidence: 99%

Cetyltriammonium Bromide Assisted Synthesis of Lanthanum Containing Barium Stannate Nanoparticles for Application in Dye Sensitized Solar Cells

Kumar

Кумар

Quamara

2018

Physica Status Solidi (a)

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In present work, correlation of structural and optical behavior of pristine and lanthanum containing barium stannate nanoparticles (synthesized via cetyltriammonium bromide (CTAB) assisted facile wet chemical route), and its effect on photovoltaic properties of dye-sensitized solar cell are reported. Thermo-gravimetric analysis of the dried compound presumably BaSn(OH) 6 , leads to the formation of BaSnO 3 nanoparticles through three endothermic decomposition processes, via liberation of one mole of water in each step, together with removal of remaining CTAB in initial cycle. The X-ray diffraction patterns reveal that substitution of Ba 2þ lattice sites by La 3þ (upto %6 at.%), the lattice retains its cubic Pm3m symmetry, however, unit cell contracts. The dye sensitized solar cells are fabricated using pristine and La-containing BaSnO 3 as photo anode; platinum coated FTO as counter electrode, N719 dye as sensitizer and I À /I 3 À as electrolyte. These show the highest power conversion efficiency (%9.2%) at the La content of 6 at.% which is about threefold increase in efficiency in comparison to pristine BaSnO 3 . The electron transport properties of these DSSC devices are investigated by electro chemical impedance spectroscopy.

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Section: Methodsmentioning

confidence: 99%

Cetyltriammonium Bromide Assisted Synthesis of Lanthanum Containing Barium Stannate Nanoparticles for Application in Dye Sensitized Solar Cells

Kumar

Кумар

Quamara

2018

Physica Status Solidi (a)

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“…The formation of the cubic BaSnO 3 (Pm3m) was observed at 600°C besides a small amount of SnO 2 and BaCO 3 , which is in agreement with the TG/ DTG analysis shown in figure 1. This crystallization temperature below 600°C is quite low compared with other synthesis methods as solid state reaction [30][31][32][33] . No significant change was observed with temperature increase from 600 to 800 °C.…”

Section: Synthesis and Characterization Of Fe-dopedmentioning

confidence: 99%

Effect of Fe3+ Doping in the Photocatalytic Properties of BaSnO3 Perovskite

et al. 2017

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In the last ten years, stannates with perovskite structure have been tested as photocatalysts. In spite of the ability of perovskite materials to accommodate different cations in its structure, evaluation of doped stannates is not a common task in the photocatalysis area. In this work, Fe 3+ doped BaSnO 3 was synthesized by the modified Pechini method, with calcination between 300 and 800°C/4 h. The powder precursor was characterized by thermogravimetry after partial elimination of carbon. Characterization after the second calcination step was done by X-ray diffraction, Raman spectroscopy and UV-visible spectroscopy. Materials were tested in the photocatalytic discoloration of the Remazol Golden Yellow azo dye under UVC irradiation. Higher photocatalytic efficiency was observed under acid media. As no meaningful adsorption was observed at this condition we believe that an indirect mechanism prevails. Fe 3+ doping decreased the band gap and favored the photocatalytic reaction, which may be assigned to the formation of intermediate levels inside the band gap.

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“…The sol-gel method used for this study was based on Kumar et al [8]. Reagent grade strontium nitrate with 99% purity (Sr(NO 3 ) 2 ), tin chloride with 98% purity (SnCl 2 ) and CTAB with >99% purity were obtained from Sigma Aldrich and added to 30 mL of deionized water.…”

Section: No Autoclave Route (Sol-gel)mentioning

confidence: 99%

“…The precursors and are surfactant stirred, heated and then dried before calcination. Kumar et al synthesized Fe-doped SrSnO 3 by the sol-gel method and calcined at 650˚C for 2 hours [8]. This method requires a much lower calcination temperature for formation of SrSnO 3 , but requires a more complicated synthesis [4].…”

Section: Introductionmentioning

confidence: 99%

SYNTHESIS AND CHARACTERIZATION OF SrSnO3 USING DIFFERENT SYNTHESIS METHODS

2019

MJAS

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Perovskites are materials that have many potential applications, such as humidity sensors, transparent conductive oxides, photocatalysts and capacitors. Strontium stannate (SrSnO 3) is a perovskite semiconductor material with a wide band gap. Several synthesis methods are commonly used to form SrSnO 3 , including solid-state reaction (SSR), sol-gel and hydrothermal. The SSR method requires high temperature calcination. On the other hand, sol-gel and hydrothermal methods merely need a lower calcination temperature to form perovskite materials. The sol-gel methods were done by adding a surfactant to Sr(NO 3) 2 and SnCl 2 solution in water before calcination. The autoclave approach was used in the hydrothermal method prior to calcination to form SrSnO 3. The objective of this study was to determine the morphological and optical properties of SrSnO 3 synthesized by sol-gel, hydrothermal and SSR. The band gap was calculated via Kubelka-Munk relations and were found to be 4.05 eV (hydrothermal), 5.50 eV (sol-gel) and 3.95 eV (SSR). Sol-gel methods showed the widest band gap for SrSnO 3. Optical results showed that there is a difference in terms of band gap for a perovskite synthesized by the different methods. Mass reduction analysis by TGA showed a sol-gel has mass loss of approximately 58% due to dehydration, which is more than for hydrothermally synthesized SrSnO 3. This reduction is higher than for SrSnO 3 synthesized by hydrothermal method. It was observed that different synthesis methods impact the optical properties and morphology of SrSnO 3 powders.

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Fe(iii) induced structural, optical, and dielectric behavior of cetyltrimethyl ammonium bromide stabilized strontium stannate nanoparticles synthesized by a facile wet chemistry route

Abstract: Correlation between the structural, optical and dielectric behavior of Fe doped perovskite strontium stannate nanoparticles synthesized by a facile wet chemistry route.

Cited by 37 publications

References 38 publications

Cetyltriammonium Bromide Assisted Synthesis of Lanthanum Containing Barium Stannate Nanoparticles for Application in Dye Sensitized Solar Cells

Cetyltriammonium Bromide Assisted Synthesis of Lanthanum Containing Barium Stannate Nanoparticles for Application in Dye Sensitized Solar Cells

Effect of Fe3+ Doping in the Photocatalytic Properties of BaSnO3 Perovskite

SYNTHESIS AND CHARACTERIZATION OF SrSnO3 USING DIFFERENT SYNTHESIS METHODS

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