Structural properties of TiO2 nanomaterials

Kusior, Anna; Banaś, J.; Trenczek-Zając, Anita; Zubrzycka, Paulina; Micek‐Ilnicka, A.; Radecka, M.

doi:10.1016/j.molstruc.2017.12.064

Cited by 65 publications

(28 citation statements)

References 41 publications

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“…Hence, the results of TEM were in accordance with the FESEM images. The HRTEM image ( Figure 3 b) presented well-defined lattice fringes with a difference in lattice spacing of 0.35 nm, that is promptly evidenced the typical lattice spacing of the (110) plane of anatase TiO 2 [ 40 , 41 ]. Figure 3 c depicts the selected area electron diffraction (SAED) patterns of as-synthesized TiO 2 nanoflowers.…”

Section: Resultsmentioning

confidence: 81%

Rapid Growth of TiO2 Nanoflowers via Low-Temperature Solution Process: Photovoltaic and Sensing Applications

et al. 2019

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This paper reports the rapid synthesis, characterization, and photovoltaic and sensing applications of TiO2 nanoflowers prepared by a facile low-temperature solution process. The morphological characterizations clearly reveal the high-density growth of a three-dimensional flower-shaped structure composed of small petal-like rods. The detailed properties confirmed that the synthesized nanoflowers exhibited high crystallinity with anatase phase and possessed an energy bandgap of 3.2 eV. The synthesized TiO2 nanoflowers were utilized as photo-anode and electron-mediating materials to fabricate dye-sensitized solar cell (DSSC) and liquid nitroaniline sensor applications. The fabricated DSSC demonstrated a moderate conversion efficiency of ~3.64% with a maximum incident photon to current efficiency (IPCE) of ~41% at 540 nm. The fabricated liquid nitroaniline sensor demonstrated a good sensitivity of ~268.9 μA mM−1 cm−2 with a low detection limit of 1.05 mM in a short response time of 10 s.

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Section: Resultsmentioning

confidence: 81%

Rapid Growth of TiO2 Nanoflowers via Low-Temperature Solution Process: Photovoltaic and Sensing Applications

et al. 2019

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“…Highly dispersed titanium dioxide-based materials for various applications on a laboratory scale are produced by such well-known wet chemistry methods as sol-gel, microemulsion, precipitation, hydrothermal, solvothermal, electrochemical, sonochemical and microwave [2][3][4][5][9][10][11]21,22,25,26,[37][38][39][40][41][42]. These methods allow fabricating TiO 2 nanostructures with different phase compositions and morphology, in particular as nanoparticles, nanorods, nanowires, nanotubes and mesoporous structures.…”

Section: Introductionmentioning

confidence: 99%

“…These methods allow fabricating TiO 2 nanostructures with different phase compositions and morphology, in particular as nanoparticles, nanorods, nanowires, nanotubes and mesoporous structures. The most promising and widely used method for producing TiO 2 is the sol-gel method [3][4][5]8,9,22,37,41,43], allowing obtaining TiO 2 powders with well-defined particle size and shape, excellent purity and homogeneity [37,43]. In the framework of the mentioned methods, inorganic salts (e.g., titanium tetrachloride TiCl 4 ) or organometallic compounds, such as metal alkoxides (e.g., titanium (IV) isopropoxide Ti[OCH(CH 3 ) 2 ] 4 ) are usually used as titanium-containing precursors.…”

Section: Introductionmentioning

confidence: 99%

Extraction–Pyrolytic Method for TiO2 Polymorphs Production

et al. 2021

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The unique properties and numerous applications of nanocrystalline titanium dioxide (TiO2) are stimulating research on improving the existing and developing new titanium dioxide synthesis methods. In this work, we demonstrate for the first time the possibilities of the extraction–pyrolytic method (EPM) for the production of nanocrystalline TiO2 powders. A titanium-containing precursor (extract) was prepared by liquid–liquid extraction using valeric acid C4H9COOH without diluent as an extractant. Simultaneous thermogravimetric analysis and differential scanning calorimetry (TGA–DSC), as well as the Fourier-transform infrared (FTIR) spectroscopy were used to determine the temperature conditions to fabricate TiO2 powders free of organic impurities. The produced materials were also characterized by X-ray diffraction (XRD) analysis and transmission electron microscopy (TEM). The results showed the possibility of the fabrication of storage-stable liquid titanium (IV)-containing precursor, which provided nanocrystalline TiO2 powders. It was established that the EPM permits the production of both monophase (anatase polymorph or rutile polymorph) and biphase (mixed anatase–rutile polymorphs), impurity-free nanocrystalline TiO2 powders. For comparison, TiO2 powders were also produced by the precipitation method. The results presented in this study could serve as a solid basis for further developing the EPM for the cheap and simple production of nanocrystalline TiO2-based materials in the form of doped nanocrystalline powders, thin films, and composite materials.

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“…In recent years, rutile nano-titanium dioxide (RNTD) have been widely employed in a variety of products (e.g., paints, cosmetics, optical component, biosensors and sunscreen) (Kusior et al, 2017). The rapid growth in TiO 2 production and its industrial applications may result in enhanced release into the environment and exposure to human (Danielsson et al, 2018; Liu, 2005).…”

Section: Introductionmentioning

confidence: 99%

Adsorption of thallium(I) on rutile nano-titanium dioxide and environmental implications

Zhang

Yang

Wang

et al. 2019

PeerJ

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Rutile nano-titanium dioxide (RNTD) characterized by loose particles with diameter in 20–50 nm has a very large surface area for adsorption of Tl, a typical trace metal that has severe toxicity. The increasing application of RNTD and widespread discharge of Tl-bearing effluents from various industrial activities would increase the risk of their co-exposure in aquatic environments. The adsorption behavior of Tl(I) (a prevalent form of Tl in nature) on RNTD was studied as a function of solution pH, temperature, and ion strength. Adsorption isotherms, kinetics, and thermodynamics for Tl(I) were also investigated. The adsorption of Tl(I) on RNTD started at very low pH values and increased abruptly, then maintained at high level with increasing pH >9. Uptake of Tl(I) was very fast on RNTD in the first 15 min then slowed down. The adsorption of Tl(I) on RNTD was an exothermic process; and the adsorption isotherm of Tl(I) followed the Langmuir model, with the maximum adsorption amount of 51.2 mg/g at room temperature. The kinetics of Tl adsorption can be described by a pseudo-second-order equation. FT-IR spectroscopy revealed that -OH and -TiOO-H play an important role in the adsorption. All these results indicate that RNTD has a fast adsorption rate and excellent adsorption amount for Tl(I), which can thus alter the transport, bioavailability and fate of Tl(I) in aqueous environment.

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Structural properties of TiO2 nanomaterials

Cited by 65 publications

References 41 publications

Rapid Growth of TiO2 Nanoflowers via Low-Temperature Solution Process: Photovoltaic and Sensing Applications

Rapid Growth of TiO2 Nanoflowers via Low-Temperature Solution Process: Photovoltaic and Sensing Applications

Extraction–Pyrolytic Method for TiO2 Polymorphs Production

Adsorption of thallium(I) on rutile nano-titanium dioxide and environmental implications

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