Fluorine doping of nanostructured TiO2 using microwave irradiation and polyvinylidene fluoride

Dwyer, Derek B.; Cooke, Daniel J.; Hidalgo, Marc Francis V.; Li, Boxiao; Stanton, Jacob; Omenya, Fred; Bernier, William E.; Jones, Wayne E.

doi:10.1016/j.jfluchem.2019.109375

Cited by 8 publications

(4 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Non‐metal doping can reduce the bandgap of nanoscale spherical TiO 2 , expand the absorption light from the ultraviolet region to the visible region, and improve the solar energy utilization of titanium dioxide. The non‐metallic elements commonly used to doping titanium dioxide are N, [ 132–134 ] C, [ 135 ] S, [ 136 ] F, [ 137 ] P, [ 138 ] and so on. Non‐metal doping potentially replaces the lattice position of some oxygen in TiO 2 , and may also form empty oxygen defects on the surface of nanoscale spherical TiO 2 .…”

Section: Different Types Of Nanoscale Spherical Tio2 Modificationmentioning

confidence: 99%

Progress on the nanoscale spherical TiO₂ photocatalysts: Mechanisms, synthesis and degradation applications

et al. 2020

View full text Add to dashboard Cite

Titanium dioxide (TiO2) has the advantages of strong photocatalytic activity, non‐toxicity, and low cost, and so on. It has always occupied a dominant position in many photocatalytic materials, especially nanoscale spherical TiO2 has the characteristics of high specific surface area and pore‐volume, and so on. Therefore, Degussa P25, as a typical representative of the nanoscale spherical structure, is currently the only material produced on a large scale. According to the structure, nanoscale spherical TiO2 can be divided into three types: solid, core‐shell, and hollow spheres. However, there is still a lack of the latest review on the synthetic doping and application of nanoscale spherical TiO2. Therefore, we first describe the degradation mechanism of nanoscale spherical TiO2 and summarize the latest progress of its synthesis strategy in this review, including doping and other modification techniques, and finally introduce the application of nanoscale spherical TiO2 photocatalytic degradation of volatile organic compounds, dye wastewater, antibiotics, pesticides, and oily wastewater. Through this review, it is helpful for researchers to further understand the synthesis and application of nanoscale spherical TiO2, hoping to continuously improve the disadvantages and photocatalytic activity of nanoscale spherical TiO2, and promote the widespread application of nanoscale spherical TiO2 on an industrial scale.

show abstract

Section: Different Types Of Nanoscale Spherical Tio2 Modificationmentioning

confidence: 99%

Progress on the nanoscale spherical TiO₂ photocatalysts: Mechanisms, synthesis and degradation applications

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Since Ti oxides and fluorides tend to convert one into the other, [3,4,[6][7][8][9][10][11] their properties turn out to be very sensitive to the conditions of synthesis. In the study of Astrova et al, [5] it has been shown that the presence of ≈ 16% TiF 3 in the oxyfluoride leads to an increase of electrode capacity from ≈350 to ≈400 mAh g À1 (current density 100 mA g À1 ), but the degradation is accelerated by ≈ 6 times.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Characteristics of Li‐Ion Battery Anodes Based on Titanium Oxyfluoride

Astrova,

Parfeneva,

et al. 2023

Energy Tech

View full text Add to dashboard Cite

The properties of titanium oxyfluoride‐based anodes are studied by galvanostatic cycling and galvanostatic intermittent titration technique in a TiOF2—Li half‐cells. This anode material is shown to have a high degradation resistance and a specific gravimetric capacity comparable to that of carbon and Li4Ti5O12. The chemical diffusion coefficient of Li+ in TiOF2 varies by two orders of magnitude in the range from 2.3 × 10−13 to 2.5 × 10−15 cm2 s−1 depending on the degree of lithiation and the direction of charge or discharge process. The electrode electrical resistance changes with cycling and its value is always lower in the lithiated state than in the delithiated state. The phenomenon of superreversibility inherent in this material has been studied. This phenomenon consists in the excess of the discharge capacity (Li extraction) over the charge capacity (Li insertion), that is, the Coulomb efficiency (CE) exceeds 100%. In the first few tens of cycles, the phenomenon is due to the extraction of excess lithium, which was previously stored in the electrode during the first cycle. On subsequent cycles, the CE stabilizes at a level above or below 100%, depending on the ratio between the charge and discharge currents, and is not related to the accumulation or spending of Li.

show abstract

“…TiO 2 nanoparticle is one of the most proper and popular semiconductors whose applications cover diverse industrial areas including photocatalysis [1,2], thin-lm, sunscreen, photovoltaic, electrodes [3,4], sensors [5,6], and drug delivery [7,8]. In this regard, TiO 2 nanoparticle have been prepared through different methods, including sol-gel [9], inverse micelle [10,11], hydrothermal [12], straight oxidation [13][14][15], chemical vapor deposition [16][17][18], physical vapor deposition [19][20][21], electrochemical accumulation [22][23][24], sonochemical [25], microwave [26][27][28], and organometallic complex compounds [29][30][31][32][33][34]. However, almost all of the mentioned methods require high temperature (usually more than 500) [35].…”

Section: Introductionmentioning

confidence: 99%

Investigation an environmentally friendly method under magnetic field as a green solvent for the synthesis of brookite phase nanoparticles at room temperature

Absalan

Gholizadeh

Kopylov³

et al. 2021

Preprint

View full text Add to dashboard Cite

TiO2 nanoparticles in the brookite phase were synthesized within an environmentally friendly method by magnetized water obtained by the US-patent magnetizing device (US10507450B2), which changes the properties of all types of the solvents with no limitation (protic or aprotic). Furthermore, this study is the first report on the synthesis of brookite TiO2 nanoparticle through magnetized water at room temperature. The procedure was tested by five different water; ordinary, 15, 30, 45, and 60min-magnetized water. The products were analyzed by various techniques including XRD, FESEM, ICP, BJH-plot, t-plot, Langmuir plot, BET, TEM, and FTIR. The result showed that the products obtained from 30 min-magnetized water were the most properly indexed TiO2 brookite phase with high surface activity. This sample could be a suitable green photocatalyst.

show abstract

Fluorine doping of nanostructured TiO2 using microwave irradiation and polyvinylidene fluoride

Cited by 8 publications

References 64 publications

Progress on the nanoscale spherical TiO₂ photocatalysts: Mechanisms, synthesis and degradation applications

Progress on the nanoscale spherical TiO₂ photocatalysts: Mechanisms, synthesis and degradation applications

Electrochemical Characteristics of Li‐Ion Battery Anodes Based on Titanium Oxyfluoride

Investigation an environmentally friendly method under magnetic field as a green solvent for the synthesis of brookite phase nanoparticles at room temperature

Contact Info

Product

Resources

About

Fluorine doping of nanostructured TiO2 using microwave irradiation and polyvinylidene fluoride

Cited by 8 publications

References 64 publications

Progress on the nanoscale spherical TiO2 photocatalysts: Mechanisms, synthesis and degradation applications

Progress on the nanoscale spherical TiO2 photocatalysts: Mechanisms, synthesis and degradation applications

Electrochemical Characteristics of Li‐Ion Battery Anodes Based on Titanium Oxyfluoride

Investigation an environmentally friendly method under magnetic field as a green solvent for the synthesis of brookite phase nanoparticles at room temperature

Contact Info

Product

Resources

About

Progress on the nanoscale spherical TiO₂ photocatalysts: Mechanisms, synthesis and degradation applications

Progress on the nanoscale spherical TiO₂ photocatalysts: Mechanisms, synthesis and degradation applications