Surfactants assisted solvothermal derived titania nanoparticles: synthesis and simulation

Dastan, Davoud; Chaure, Nandu B.; Kartha, Moses J.

doi:10.1007/s10854-017-6474-9

Cited by 117 publications

(48 citation statements)

References 45 publications

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“…Semiconductor oxides nanostructures have attracted much attention due to their potential in nanoelectronics and optoelectronics [1][2][3][4][5]. Among semiconductor oxides, tungsten oxide with various oxidation states of WO 3−x has been recognized as one of the most impressive candidate compared with other electrochromic materials due to its fast optical response time.…”

Section: Introductionmentioning

confidence: 99%

“…However, most of the formed WO 3−x NWs are randomly dispersed, lacking substrate support with disordered distribution while for most applications, it is an important requisite to have the control on the orientation and position of WO 3−x NWs on proper substrates. Based on Dastan et al results, it has been shown that the methods and reactant materials for producing a nanostructures (such as TiO 2 nanoparticles) influences its morphological, structural, optical, molecular and thermal properties [4,5]. Therefore, many researchers have prepared vertically aligned tungsten oxide nanostructures, this is because the vertically aligned nanostructures increase the path-length of the light through material for efficient light absorption with scattering, and while maintaining the path lengths reasonably short for the photo-generated charges to travel [13,18,19].…”

Section: Introductionmentioning

confidence: 99%

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Effect of growth time on structural, morphological and electrical properties of tungsten oxide nanowire

et al. 2018

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In this work, tungsten oxide nanowires were grown directly on a tungsten substrate in 800 °C using thermal evaporation method in a horizontal tube furnace. The effect of growth time on structural, morphological, elemental composition and electrical properties of the tungsten oxide nanostructures was investigated using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS) technique and KIETHLEY 2361 system. Our experimental results show that tungsten oxide nanowires crystalline phase, electrical conductance and density on the substrate surface depend on the growth time. The XRD results showed that tungsten oxide nanowires are synthesized with a cubic WO 3 structure. Moreover, the lattice strain, grain size and dislocation density were obtained in three different growth time. It is noteworthy that by increasing the growth time the crystallinity increases. The FESEM images at different growth times showed that the nanowires on grains begin to germinate when the growth time increases to 6 h. At this time, nanowire structures with 1 µm in diameter and 40 µm in length were formed and continued to grow which caused a change in the morphology. In addition, the XPS results showed that the sample that has grown at longer growth time exhibit two asymmetric W4d5/2 and W4d3/2 peak at 252 and 263 eV which can be assigned to W5+ and W4+ species, respectively. Moreover, the linear I-V curves are obtained and it is found that by increasing the growth time, the conductivity of the sample increases due to increasing number of wires on the sample surface. Finally, the conditions and mechanism of WO 3 nanowire growth are discussed. The results can be used to guide a better understanding about the growth behavior of WO 3 nanowires and can contribute towards the development of novel nanodevices.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of growth time on structural, morphological and electrical properties of tungsten oxide nanowire

et al. 2018

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“…Figure shows the FTIR spectra of β‐CD, β‐CD‐MAH, non‐imprinted polymer and Cu(II)‐imprinted polymer. The FTIR spectra show a peak due to an asymmetrical stretching vibration between 3400 and 3500 cm −1 , which can be attributed to the O–H stretching vibration in β‐CD . After the reaction of β‐CD with MAH, a characteristic peak due to the symmetric stretching vibration of unsaturated carboxylic acid ester appeared at 1728 cm −1 , while the ring vibration peak was still present at 580 cm −1 .…”

Section: Resultsmentioning

confidence: 99%

“…It is evident from the figure that the adsorption capacity increased rapidly at first with increasing concentration of Cu 2+ . The adsorption capacity in the imprinted and non‐imprinted polymers reached a plateau at 28.89 and 4.45 mg g −1 , respectively, once all the imprinted sites and accessible interaction points were occupied . The concentration difference between the aqueous phase and polymers played a major role in attaining the plateau in the adsorption process.…”

Section: Resultsmentioning

confidence: 99%

“…The FTIR spectra show a peak due to an asymmetrical stretching vibration between 3400 and 3500 cm −1 , which can be attributed to the O-H stretching vibration in -CD. 29,30 After the reaction of -CD with MAH, a characteristic peak due to the symmetric stretching vibration of unsaturated carboxylic acid ester appeared at 1728 cm −1 , while the ring vibration peak was still present at 580 cm −1 . The peak at 940 cm −1 due to vibration of the backbone containing the -1,4 glycosidic bond was in agreement with the structure of -CD.…”

Section: Resultsmentioning

confidence: 99%

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Preparation and characterisation of a novel copper‐imprinted polymer based on β‐cyclodextrin copolymers for selective determination of Cu²⁺ions

Cao

Liu

et al. 2019

Polymer International

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A novel ion‐imprinted polymer (IIP) using (6‐O‐butene diacid ester)‐β‐cyclodextrin (β‐CD‐MAH) as the functional monomer and copper ions as the template was developed for Cu2+ sensing. First, reactive β‐cyclodextrin (β‐CD) monomers with vinyl carboxylic acid functional groups were synthesised and were co‐polymerised with styrene via radical polymerisation. Then, the β‐CD copolymers were complexed with Cu2+ in order to obtain the IIP. The imprinting effect was realised by removing the template ions from the imprinted polymer. The structure, composition and morphology of the IIP were characterised by Fourier transform IR spectroscopy, energy‐dispersive spectroscopy and field‐emission SEM. The adsorption capacity was investigated by UV–visible spectroscopy in batch operation mode. The maximum adsorption capacity for the Cu2+ template ions was 28.91 mg g−1, and the adsorption selectivity was clearly illustrated from the increased sorption affinity towards Cu2+ ions over other competing ions. The adsorption was affected by the pH of the aqueous medium, and enhanced adsorption capacity was observed at pH 5. The prepared IIP could be used 10 times after its regeneration without significant loss of the adsorption capacity. © 2018 Society of Chemical Industry

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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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Surfactants assisted solvothermal derived titania nanoparticles: synthesis and simulation

Cited by 117 publications

References 45 publications

Effect of growth time on structural, morphological and electrical properties of tungsten oxide nanowire

Effect of growth time on structural, morphological and electrical properties of tungsten oxide nanowire

Preparation and characterisation of a novel copper‐imprinted polymer based on β‐cyclodextrin copolymers for selective determination of Cu²⁺ions

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

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Surfactants assisted solvothermal derived titania nanoparticles: synthesis and simulation

Cited by 117 publications

References 45 publications

Effect of growth time on structural, morphological and electrical properties of tungsten oxide nanowire

Effect of growth time on structural, morphological and electrical properties of tungsten oxide nanowire

Preparation and characterisation of a novel copper‐imprinted polymer based on β‐cyclodextrin copolymers for selective determination of Cu2+ions

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

Contact Info

Product

Resources

About

Preparation and characterisation of a novel copper‐imprinted polymer based on β‐cyclodextrin copolymers for selective determination of Cu²⁺ions

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