Synthesis and behavior of cetyltrimethyl ammonium bromide stabilized Zn1+xSnO3+x (0 ≤ x ≤ 1) nano-crystallites

Astrid Placke, Ashok Kumar, Shashank Priya

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Abstract

We report synthesis of cetyltrimethyl ammonium bromide (CTAB) stabilized Zn1+xSnO3+x (0 ≤ x ≤ 1) nano-crystallites by facile cost-effective wet chemistry route. The X-ray diffraction patterns of as-synthesized powders at the Zn/Sn ratio of 1 exhibited formation of ZnSn(OH)6. Increasing the Zn/Sn ratio further resulted in the precipitation of an additional phase corresponding to Zn(OH)2. The decomposition of these powders at 650°C for 3h led to the formation of the orthorhombic phase of ZnSnO3 and tetragonal SnO2-type phase of Zn2SnO4 at the Zn/Sn ratio of 1 and 2, respectively, with the formation of their mixed phases at intermediate compositions, i.e., at Zn/Sn ratio of 1.25, 1.50 and 1.75, respectively. The lattice parameters of orthorhombic and tetragonal phases were a ∼ 3.6203 Å, b ∼ 4.2646 Å and c ∼ 12.8291Å (for ZnSnO3) and a = b ∼ 5.0136 Å and c ∼ 3.3055Å (for Zn2SnO4). The transmission electron micrographs revealed the formation of nano-crystallites with aspect ratio ∼ 2; the length and thickness being 24, 13 nm (for ZnSnO3) and 47, 22 nm (for Zn2SnO4), respectively. The estimated direct bandgap values for the ZnSnO3 and Zn2SnO4 were found to be 4.21 eV and 4.12 eV, respectively. The ac conductivity values at room temperature (at 10 kHz) for the ZnSnO3 and Zn2SnO4 samples were 8.02 × 10-8 Ω-1 cm-1 and 6.77 × 10-8 Ω-1 cm-1, respectively. The relative permittivity was found to increase with increase in temperature, the room temperature values being 14.24 and 25.22 for the samples ZnSnO3 and Zn2SnO4, respectively. Both the samples, i.e., ZnSnO3 and Zn2SnO4, exhibited low values of loss tangent up to 300 K, the room temperature values being 0.89 and 0.72, respectively. A dye-sensitized solar cell has been fabricated using the optimized sample of zinc stannate photo-anode, i.e., Zn2SnO4. The cyclic voltammetry revealed oxidation and reduction around 0.40 V (current density ∼ 11.1 mA/cm2) and 0.57 V (current density- 11.7 mA/cm2) for Zn2SnO4 photo-anode in presence of light.

Original languageEnglish (US)
Article numbere0156246
JournalPloS one
Volume11
Issue number5
DOIs
StatePublished - May 1 2016

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bromides
Crystallites
ambient temperature
Temperature
synthesis
Powders
powders
Anodes
Electrodes
Current density
photovoltaic cells
sampling
X-ray diffraction
X-Ray Diffraction
Diffraction patterns
Cyclic voltammetry
Lattice constants
Oxidation-Reduction
dyes
Zinc

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

Cite this

@article{7f597236b3c047b8a53d46d9c5b9d2f6,
title = "Synthesis and behavior of cetyltrimethyl ammonium bromide stabilized Zn1+xSnO3+x (0 ≤ x ≤ 1) nano-crystallites",
abstract = "We report synthesis of cetyltrimethyl ammonium bromide (CTAB) stabilized Zn1+xSnO3+x (0 ≤ x ≤ 1) nano-crystallites by facile cost-effective wet chemistry route. The X-ray diffraction patterns of as-synthesized powders at the Zn/Sn ratio of 1 exhibited formation of ZnSn(OH)6. Increasing the Zn/Sn ratio further resulted in the precipitation of an additional phase corresponding to Zn(OH)2. The decomposition of these powders at 650°C for 3h led to the formation of the orthorhombic phase of ZnSnO3 and tetragonal SnO2-type phase of Zn2SnO4 at the Zn/Sn ratio of 1 and 2, respectively, with the formation of their mixed phases at intermediate compositions, i.e., at Zn/Sn ratio of 1.25, 1.50 and 1.75, respectively. The lattice parameters of orthorhombic and tetragonal phases were a ∼ 3.6203 {\AA}, b ∼ 4.2646 {\AA} and c ∼ 12.8291{\AA} (for ZnSnO3) and a = b ∼ 5.0136 {\AA} and c ∼ 3.3055{\AA} (for Zn2SnO4). The transmission electron micrographs revealed the formation of nano-crystallites with aspect ratio ∼ 2; the length and thickness being 24, 13 nm (for ZnSnO3) and 47, 22 nm (for Zn2SnO4), respectively. The estimated direct bandgap values for the ZnSnO3 and Zn2SnO4 were found to be 4.21 eV and 4.12 eV, respectively. The ac conductivity values at room temperature (at 10 kHz) for the ZnSnO3 and Zn2SnO4 samples were 8.02 × 10-8 Ω-1 cm-1 and 6.77 × 10-8 Ω-1 cm-1, respectively. The relative permittivity was found to increase with increase in temperature, the room temperature values being 14.24 and 25.22 for the samples ZnSnO3 and Zn2SnO4, respectively. Both the samples, i.e., ZnSnO3 and Zn2SnO4, exhibited low values of loss tangent up to 300 K, the room temperature values being 0.89 and 0.72, respectively. A dye-sensitized solar cell has been fabricated using the optimized sample of zinc stannate photo-anode, i.e., Zn2SnO4. The cyclic voltammetry revealed oxidation and reduction around 0.40 V (current density ∼ 11.1 mA/cm2) and 0.57 V (current density- 11.7 mA/cm2) for Zn2SnO4 photo-anode in presence of light.",
author = "Astrid Placke and Ashok Kumar and Shashank Priya",
year = "2016",
month = "5",
day = "1",
doi = "10.1371/journal.pone.0156246",
language = "English (US)",
volume = "11",
journal = "PLoS One",
issn = "1932-6203",
publisher = "Public Library of Science",
number = "5",

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Synthesis and behavior of cetyltrimethyl ammonium bromide stabilized Zn1+xSnO3+x (0 ≤ x ≤ 1) nano-crystallites. / Placke, Astrid; Kumar, Ashok; Priya, Shashank.

In: PloS one, Vol. 11, No. 5, e0156246, 01.05.2016.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Synthesis and behavior of cetyltrimethyl ammonium bromide stabilized Zn1+xSnO3+x (0 ≤ x ≤ 1) nano-crystallites

AU - Placke, Astrid

AU - Kumar, Ashok

AU - Priya, Shashank

PY - 2016/5/1

Y1 - 2016/5/1

N2 - We report synthesis of cetyltrimethyl ammonium bromide (CTAB) stabilized Zn1+xSnO3+x (0 ≤ x ≤ 1) nano-crystallites by facile cost-effective wet chemistry route. The X-ray diffraction patterns of as-synthesized powders at the Zn/Sn ratio of 1 exhibited formation of ZnSn(OH)6. Increasing the Zn/Sn ratio further resulted in the precipitation of an additional phase corresponding to Zn(OH)2. The decomposition of these powders at 650°C for 3h led to the formation of the orthorhombic phase of ZnSnO3 and tetragonal SnO2-type phase of Zn2SnO4 at the Zn/Sn ratio of 1 and 2, respectively, with the formation of their mixed phases at intermediate compositions, i.e., at Zn/Sn ratio of 1.25, 1.50 and 1.75, respectively. The lattice parameters of orthorhombic and tetragonal phases were a ∼ 3.6203 Å, b ∼ 4.2646 Å and c ∼ 12.8291Å (for ZnSnO3) and a = b ∼ 5.0136 Å and c ∼ 3.3055Å (for Zn2SnO4). The transmission electron micrographs revealed the formation of nano-crystallites with aspect ratio ∼ 2; the length and thickness being 24, 13 nm (for ZnSnO3) and 47, 22 nm (for Zn2SnO4), respectively. The estimated direct bandgap values for the ZnSnO3 and Zn2SnO4 were found to be 4.21 eV and 4.12 eV, respectively. The ac conductivity values at room temperature (at 10 kHz) for the ZnSnO3 and Zn2SnO4 samples were 8.02 × 10-8 Ω-1 cm-1 and 6.77 × 10-8 Ω-1 cm-1, respectively. The relative permittivity was found to increase with increase in temperature, the room temperature values being 14.24 and 25.22 for the samples ZnSnO3 and Zn2SnO4, respectively. Both the samples, i.e., ZnSnO3 and Zn2SnO4, exhibited low values of loss tangent up to 300 K, the room temperature values being 0.89 and 0.72, respectively. A dye-sensitized solar cell has been fabricated using the optimized sample of zinc stannate photo-anode, i.e., Zn2SnO4. The cyclic voltammetry revealed oxidation and reduction around 0.40 V (current density ∼ 11.1 mA/cm2) and 0.57 V (current density- 11.7 mA/cm2) for Zn2SnO4 photo-anode in presence of light.

AB - We report synthesis of cetyltrimethyl ammonium bromide (CTAB) stabilized Zn1+xSnO3+x (0 ≤ x ≤ 1) nano-crystallites by facile cost-effective wet chemistry route. The X-ray diffraction patterns of as-synthesized powders at the Zn/Sn ratio of 1 exhibited formation of ZnSn(OH)6. Increasing the Zn/Sn ratio further resulted in the precipitation of an additional phase corresponding to Zn(OH)2. The decomposition of these powders at 650°C for 3h led to the formation of the orthorhombic phase of ZnSnO3 and tetragonal SnO2-type phase of Zn2SnO4 at the Zn/Sn ratio of 1 and 2, respectively, with the formation of their mixed phases at intermediate compositions, i.e., at Zn/Sn ratio of 1.25, 1.50 and 1.75, respectively. The lattice parameters of orthorhombic and tetragonal phases were a ∼ 3.6203 Å, b ∼ 4.2646 Å and c ∼ 12.8291Å (for ZnSnO3) and a = b ∼ 5.0136 Å and c ∼ 3.3055Å (for Zn2SnO4). The transmission electron micrographs revealed the formation of nano-crystallites with aspect ratio ∼ 2; the length and thickness being 24, 13 nm (for ZnSnO3) and 47, 22 nm (for Zn2SnO4), respectively. The estimated direct bandgap values for the ZnSnO3 and Zn2SnO4 were found to be 4.21 eV and 4.12 eV, respectively. The ac conductivity values at room temperature (at 10 kHz) for the ZnSnO3 and Zn2SnO4 samples were 8.02 × 10-8 Ω-1 cm-1 and 6.77 × 10-8 Ω-1 cm-1, respectively. The relative permittivity was found to increase with increase in temperature, the room temperature values being 14.24 and 25.22 for the samples ZnSnO3 and Zn2SnO4, respectively. Both the samples, i.e., ZnSnO3 and Zn2SnO4, exhibited low values of loss tangent up to 300 K, the room temperature values being 0.89 and 0.72, respectively. A dye-sensitized solar cell has been fabricated using the optimized sample of zinc stannate photo-anode, i.e., Zn2SnO4. The cyclic voltammetry revealed oxidation and reduction around 0.40 V (current density ∼ 11.1 mA/cm2) and 0.57 V (current density- 11.7 mA/cm2) for Zn2SnO4 photo-anode in presence of light.

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