Influence of nickel and lanthanum ions co-doping on photocatalytic properties of TiO2 for effective degradation of reactive yellow 145 in the visible region

Bashir, Amna; Bashir, Fatima; Sultan, Muhammad; Mubeen, Muhammad; Iqbal, Azhar; Akhter, Zareen

doi:10.1007/s10971-019-05162-5

Cited by 34 publications

(24 citation statements)

References 85 publications

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“…Hence, the conductivity of titanium dioxide increased by approximately 100-fold after the incorporation of nickel dopant. In accordance with [ 45 ], this can be explained by the generation of a localized Ni 3 d energy state within the TiO 2 (B) band structure. It is important to note that the electronic properties of titanium dioxide were improved steadily up to Ni/Ti = 0.05, while a subsequent extension in nickel content (Ni/Ti = 0.08) was accompanied by a decrease in conductivity.…”

Section: Resultssupporting

confidence: 83%

“…The data obviously reveal changes in the absorbance curve, with a shift in the absorption edge to the visible-light region for nickel-containing TiO2(B) nanobelts. According to previous reports [45,47], this red shift may be related to the appearance of Ni 3d energy levels in the middle of the TiO2 band gap. Furthermore, the spectrum of the TO-Ni-05 sample showed an absorption peak with a maximum at approximately 725 nm, the intensity of which strongly depended on nickel concentration (Figure S5, Supplementary Materials).…”

Section: Resultssupporting

confidence: 64%

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Enhancing Lithium and Sodium Storage Properties of TiO2(B) Nanobelts by Doping with Nickel and Zinc

et al. 2021

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Nickel- and zinc-doped TiO2(B) nanobelts were synthesized using a hydrothermal technique. It was found that the incorporation of 5 at.% Ni into bronze TiO2 expanded the unit cell by 4%. Furthermore, Ni dopant induced the 3d energy levels within TiO2(B) band structure and oxygen defects, narrowing the band gap from 3.28 eV (undoped) to 2.70 eV. Oppositely, Zn entered restrictedly into TiO2(B), but nonetheless, improves its electronic properties (Eg is narrowed to 3.21 eV). The conductivity of nickel- (2.24 × 10−8 S·cm−1) and zinc-containing (3.29 × 10−9 S·cm−1) TiO2(B) exceeds that of unmodified TiO2(B) (1.05 × 10−10 S·cm−1). When tested for electrochemical storage, nickel-doped mesoporous TiO2(B) nanobelts exhibited improved electrochemical performance. For lithium batteries, a reversible capacity of 173 mAh·g−1 was reached after 100 cycles at the current load of 50 mA·g−1, whereas, for unmodified and Zn-doped samples, around 140 and 151 mAh·g−1 was obtained. Moreover, Ni doping enhanced the rate capability of TiO2(B) nanobelts (104 mAh·g−1 at a current density of 1.8 A·g−1). In terms of sodium storage, nickel-doped TiO2(B) nanobelts exhibited improved cycling with a stabilized reversible capacity of 97 mAh·g−1 over 50 cycles at the current load of 35 mA·g−1.

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Section: Resultssupporting

confidence: 83%

Section: Resultssupporting

confidence: 64%

Enhancing Lithium and Sodium Storage Properties of TiO2(B) Nanobelts by Doping with Nickel and Zinc

et al. 2021

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“…The value of ν associated with Ti–O bond vibrations depends on the strength of the bond, as reflected by its force constant k , where the bond strength increases with increasing k . However, the introduction of Vo defects decreases the concentration of O atoms available for forming Ti–O bonds, which reduces the value of k . Accordingly, the shift, as observed in Figure b, can be correlated with the Ti–O bond strength, according to the following equation where μ is the reduced mass of the bond acting between the elements.…”

Section: Resultsmentioning

confidence: 99%

Colorless Chemical Substance Detection in the Degradation of Tetracycline Based on Operando ¹H Nuclear Magnetic Resonance Spectroscopy

Wei

Dong

et al. 2021

J. Phys. Chem. C

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The development of an efficient and durable photocatalyst is the key to the degradation of tetracycline (TC). However, the ability to monitor the concentration of TC accurately remains a significant challenge. The present work addresses this issue by applying an operando 1H NMR spectroscopy technology for monitoring the TC concentration using TiO2 photocatalysts with different oxygen vacancy concentrations. The application of operando NMR spectra compensates for the experimental error inherent in UV–vis spectrophotometry analyses caused by the destruction of the chromogenic group and thereby can accurately reflect the true degree of degradation. The TC degradation performances of the photocatalysts are evaluated systematically, and the obtained benzene ring concentrations are observed to contrast sharply with the corresponding TC concentration results obtained by UV–vis spectrophotometry. This research increases the availability, reliability, and accuracy of the test methods employed in TC degradation research and provides an experimental reference for the design of high-efficiency catalysts.

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“…The total effect of RGO in improving and reducing the photoactivity of Fe 3 O 4 –FeVO 4 can attributed to the following reasons: the improving resulted due to the effect of RGO in acceleration the transition of electrons to the catalyst surface leading inhibition of the photogeneration charges recombination 20 . Also, the addition of RGO facilitated the transition of electrons from VB to CB due to creation of new levels of energy through the E g of Fe 3 O 4 –FeVO 4 which in turn reduced the required energy for this transfer 53 . On the other hand, the reduction in the photoactivity of Fe 3 O 4 –FeVO 4 in the existence of high amount of RGO resulted from the shielding effect of RGO which restrained the absorption of incident photons to arrival at the active sites on the surface of Fe 3 O 4 –FeVO 4 20 .…”

Section: Resultsmentioning

confidence: 99%

One-step preparation of RGO/Fe3O4–FeVO4 nanocomposites as highly effective photocatalysts under natural sunlight illumination

Alsulami

Rajeh

Mannaa

et al. 2022

Sci Rep

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The study used a one-step hydrothermal method to prepare Fe3O4–FeVO4 and xRGO/Fe3O4–FeVO4 nanocomposites. XRD, TEM, EDS, XPS, DRS, and PL techniques were used to examine the structurally and morphologically properties of the prepared samples. The XRD results appeared that the Fe3O4–FeVO4 has a triclinic crystal structure. Under hydrothermal treatment, (GO) was effectively reduced to (RGO) as illustrated by XRD and XPS results. UV–Vis analysis revealed that the addition of RGO enhanced the absorption in the visible region and narrowed the band gap energy. The photoactivities of the prepared samples were evaluated by degrading methylene blue (MB), phenol and brilliant green under sunlight illumination. As indicated by all the nanocomposites, photocatalytic activity was higher than the pure Fe3O4–FeVO4 photocatalyst, and the highest photodegradation efficiency of MB and phenol was shown by the 10%RGO/Fe3O4–FeVO4. In addition, the study examined the mineralization (TOC), photodegradation process, and photocatalytic reaction kinetics of MB and phenol.

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Influence of nickel and lanthanum ions co-doping on photocatalytic properties of TiO2 for effective degradation of reactive yellow 145 in the visible region

Cited by 34 publications

References 85 publications

Enhancing Lithium and Sodium Storage Properties of TiO2(B) Nanobelts by Doping with Nickel and Zinc

Enhancing Lithium and Sodium Storage Properties of TiO2(B) Nanobelts by Doping with Nickel and Zinc

Colorless Chemical Substance Detection in the Degradation of Tetracycline Based on Operando ¹H Nuclear Magnetic Resonance Spectroscopy

One-step preparation of RGO/Fe3O4–FeVO4 nanocomposites as highly effective photocatalysts under natural sunlight illumination

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Influence of nickel and lanthanum ions co-doping on photocatalytic properties of TiO2 for effective degradation of reactive yellow 145 in the visible region

Cited by 34 publications

References 85 publications

Enhancing Lithium and Sodium Storage Properties of TiO2(B) Nanobelts by Doping with Nickel and Zinc

Enhancing Lithium and Sodium Storage Properties of TiO2(B) Nanobelts by Doping with Nickel and Zinc

Colorless Chemical Substance Detection in the Degradation of Tetracycline Based on Operando 1H Nuclear Magnetic Resonance Spectroscopy

One-step preparation of RGO/Fe3O4–FeVO4 nanocomposites as highly effective photocatalysts under natural sunlight illumination

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Product

Resources

About

Colorless Chemical Substance Detection in the Degradation of Tetracycline Based on Operando ¹H Nuclear Magnetic Resonance Spectroscopy