Characterization of TiO2 nanoparticles prepared using different surfactants by sol–gel method

Dastan, Davoud; Londhe, Priyanka U.; Chaure, Nandu B.

doi:10.1007/s10854-014-2041-9

Cited by 83 publications

(34 citation statements)

References 25 publications

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“…Prior to incremental addition of titanium isopropoxide (TIP), oley amine (OM) was added dropwise to absolute ethanol and the solution was under moderate stirring for 1 h at ambient condition. These chemicals were used with molar ratio 0.2:9:1 for OM/ethanol/TIP [3]. FTO substrates were washed in acetone, methanol, and double distilled water prior to the deposition of TiO 2 .…”

Section: Preparation Of Titania Thin Films Using Dip-coating Methodsmentioning

confidence: 99%

“…The average crystallite size calculated for anatase titania using the above expression was almost 25 nm. The crystallite size normally increases when the annealing temperature increases due to the aggregation and recrystallization of TiO 2 after heat treatment [3]. Figure 2 shows absorption and transmission spectra of pristine and calcinated titania thin films at ambient condition.…”

Section: Structural Propertiesmentioning

confidence: 99%

“…The former is likely due to the agglomeration of particles on the surface or phase transformation from amorphous to anatase and the later is due to the increase in surface scattering owing to the surface roughness [3,27,31]. These information regarding the optical characteristics, the energy band gap and transmittance, are particularly significant, for instance, a reduction in the band gap and high transparency are fruitful for the applications such as photocatalytic and optoelectronic devices, respectively [3,19,27,31]. The absorption coefficients (a) of the samples were calculated using the following formula:…”

Section: Structural Propertiesmentioning

confidence: 99%

“…It also has an excellent physical, optical, and chemical characteristics. Titania has large band gap, high thermal and chemical stability, high transmittance in the visible spectral range, high dielectric constant, and can be easily doped with active ions [1][2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…The amorphous and anatase phases of titania are normally observed at temperatures lower than 300°C and the range from 350 to 700°C, respectively. Anatase phase has excellent chemical and physical properties for air and water purification [3,[10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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Characterization of titania thin films grown by dip-coating technique

Dastan

Panahi

Chaure

2016

J Mater Sci: Mater Electron

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108

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A dip-coating technique was employed to prepare anatase phase of titania thin films. Fluorine doped tin oxide substrates were used to prepare titania thin films. The samples were annealed at 550°C for 18 h. X-ray diffraction results revealed the amorphous and anatase phases of TiO 2 for as-synthesized and annealed samples, respectively. The crystallite size of anatase TiO 2 thin films was almost 25 nm for annealed samples. UV-visible confirmed the energy band gap 3.86 and 3.64 eV for as-prepared and calcinated titania thin films. The reduction in the energy band gap could be due to the change in crystallization and agglomeration of small grains after calcination. The morphology of the prepared films was investigated by field emission scanning electron microscopy which demonstrated the agglomeration of spherical particles of TiO 2 with average particle size of about 30 nm. The molecular properties (chemical bonding) of the samples were investigated by means of Fourier Transform Infrared (FTIR) spectroscopy. FTIR analysis exhibited the formation of titania, functional group OH, hydroxyl stretching vibrations of the C-OH groups, bending vibration mode of H-O-H, alkyl C-H stretch, stretching band of Ti-OH, CN asymmetric band stretching, and C=O saturated aldehyde.

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Section: Preparation Of Titania Thin Films Using Dip-coating Methodsmentioning

confidence: 99%

Section: Structural Propertiesmentioning

confidence: 99%

Section: Structural Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Characterization of titania thin films grown by dip-coating technique

Dastan

Panahi

Chaure

2016

J Mater Sci: Mater Electron

Self Cite

108

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One‐Step Fabrication of Nanocrystalline Nanonetwork SnO₂ Gas Sensors by Integrated Multilaser Processing

Lei

Zhang

Zhao

et al. 2020

Adv Materials Technologies

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An integrated multilaser process is developed to fabricate nanocrystalline nanonetwork SnO2 gas sensors in one integrated procedure, which combines electrodes fabrication, nanomaterials deposition, and postannealing. Interdigit electrodes are fabricated on an Au‐coated fused silica substrate using a picosecond (ps) laser, which ablates the Au coating from the back of the substrate to pattern the electrodes. A novel transmitted Ps laser deposition (TPLD) process is designed to deposit SnO2 nanonetwork on the interdigit electrodes with precise deposition area control under a close target‐to‐substrate distance. The obtained SnO2 nanonetwork is in situ postannealed by a CO2 laser to improve the crystallinity, while the nano morphology and grain size keep intact. To investigate the morphology and formation process of the nanonetwork, the microstructure of the laser‐deposited SnO2 layer is characterized. The crystallization control of CO2 laser annealing is investigated through analyzing the Raman spectrum, X‐ray diffraction (XRD) patterns, and lattice structures of the samples. By exposed to H2 atmosphere, the fabricated gas sensor is demonstrated for H2 monitoring.

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Mild Microfluidic Approaches to Oxide Nanoparticles Synthesis

Zardi

Carofiglio

Maggini

2021

Chemistry A European J

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Oxide nanoparticles (oxide NPs) are advanced materials with a wide variety of applications in different fields. The use of continuous flow methods is particularly appealing for their synthesis due to the high control achieved over the reaction conditions and the easy process scalability. The present review focuses on the preparation of oxide NPs using microfluidic setups at low temperature (� 80 °C), since the employment of mild reaction conditions is crucial for developing sustainable and cost-effective processes. A particular emphasis will be put on the improvement over the final product features (e. g., size, shape, and size distribution) given by flow methods with respect to conventional batch procedures. The main issues that arise by treating NPs suspensions in microfluidic systems are product deposition or channel clogging; mitigation strategies to overcome these drawbacks will also be presented and discussed.

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Characterization of TiO2 nanoparticles prepared using different surfactants by sol–gel method

Cited by 83 publications

References 25 publications

Characterization of titania thin films grown by dip-coating technique

Characterization of titania thin films grown by dip-coating technique

One‐Step Fabrication of Nanocrystalline Nanonetwork SnO₂ Gas Sensors by Integrated Multilaser Processing

Mild Microfluidic Approaches to Oxide Nanoparticles Synthesis

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Characterization of TiO2 nanoparticles prepared using different surfactants by sol–gel method

Cited by 83 publications

References 25 publications

Characterization of titania thin films grown by dip-coating technique

Characterization of titania thin films grown by dip-coating technique

One‐Step Fabrication of Nanocrystalline Nanonetwork SnO2 Gas Sensors by Integrated Multilaser Processing

Mild Microfluidic Approaches to Oxide Nanoparticles Synthesis

Contact Info

Product

Resources

About

One‐Step Fabrication of Nanocrystalline Nanonetwork SnO₂ Gas Sensors by Integrated Multilaser Processing