Influence of Gamma-Irradiation on Structural, Optical and Photocatalytic Performance of TiO2 Nanoparticles Under Controlled Atmospheres

Bourezgui, A.; Kacem, Imen; Daoudi, M.; El-Shazly, A.H.

doi:10.1007/s11664-019-07887-z

Cited by 34 publications

(9 citation statements)

References 58 publications

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“…The results of the present study revealed general decrease in the intensity of all peaks of FTIR in Group 2C. This could be attributed to the vibrations induced by the ionizing radiation (8) . Irradiation of polymer can produce radicals in the polymer chain by hydrogen abstraction and chain scission at any bond within the polymer chain (24) .…”

Section: Discussionsupporting

confidence: 57%

“…The effect of gamma irradiation on the features of pure magnesium oxide MgO, titanium oxide TiO 2 and MgO-TiO 2 binary oxides have been investigated using Fourier Transform Infrared spectroscopy showing slight shift in the transmittance spectra after irradiation (7) .The effect of gamma-rays on structural, optical and photocatalytic properties of MgO nanoparticles under controlled atmospheres showed that gamma radiation did not change the crystallinity of MgO nanostructures (8) .…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Surface Characteristic of Ti- Implant Coated with Nano-Ceramic and Chitosan after Sterilization by Gamma Irradiation

et al. 2022

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Section: Discussionsupporting

confidence: 57%

Section: Introductionmentioning

confidence: 99%

Evaluation of Surface Characteristic of Ti- Implant Coated with Nano-Ceramic and Chitosan after Sterilization by Gamma Irradiation

et al. 2022

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“…Additionally, peaks at around 1080 cm -1 and 850 cm -1 are attributed to C-N and N-H, and =C-H groups in both materials. 49,52,80,81 Using simulation software that has been broadly employed for its accurate outcomes is helpful for comparison of experimental data with calculated results, a theoretical calculation was performed using ORCA 4.0 to disclose the cause of the inherent similarity for the spectra. ORCA is a quantum chemical computation program developed by the Max Planck Institute, and it can perform density functional theory (DFT) and semi-empirical molecular orbital calculations with high accuracy.…”

Section: Removal Of Fluoride Ions From Solution By Poly(aniline-co-o-...mentioning

confidence: 99%

Highly Efficient Defluoridation of Water through Reusable poly(aniline-co-o-aminophenol) Copolymer Modified Electrode Using Electrochemical Quartz Crystal Microbalance

Unal

Hillman

Ryder

et al. 2021

J. Electrochem. Soc.

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Although the World Health Organization (WHO) recommends a limit of 1.5 mg l−1 fluoride ions in drinking water, this is not satisfied in many parts of the world. When this limit is exceeded, the electrochemically switched ion-exchange (ESIX) technique (mainly based on conductive polymers) has been identified as a promising method for removing the excess fluoride ions. The present study aimed to develop an efficient method based on the ESIX technique by using poly(aniline-co-o-aminophenol) copolymer to extract fluoride ions. Electrochemical quartz crystal microbalance (EQCM) and acoustic admittance data were utilized to assay the synthetic efficiency of copolymer deposition, and to evaluate the dependence of the defluoridation process on the proportions of the monomers in the copolymer matrix and on film thickness. The resulting films were characterised by Fourier transform infrared spectroscopy (FTIR) and scanning electrochemical microscopy (SEM) techniques. For optimized co-monomer ratio in the feedstock, poly(aniline-co-o-aminophenol) at an applied potential of 0.30 V showed excellent performance for fluoride removal from water at pH 6.6, to the extent of 20 (mg F−) (g polymer)−1. Comparison of the performance of ESIX using poly(aniline-co-o-aminophenol) with that of other techniques and materials reveal that it has significant potential for water defluoridation.

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“…In summary, we noted the highest photocatalytic efficiency for the Zn 0 Co 100 ZIF-8 metal-organic framework. The different molar ratio percentages of Zn 1-x Co x is known to produce catalyst surface oxygen vacancies that act as traps for electrons [49]. These defects were recorded to impact H and O 2 surface adsorption on Zn 1-x Co x and to facilitate the dissociation of H 2 O and hydroxy groups, thus speeding up the organic pollutant degradation process.…”

Section: Photocatalytic Testmentioning

confidence: 99%

Thermal Analysis of a Metal–Organic Framework ZnxCo1-X-ZIF-8 for Recent Applications

et al. 2021

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Zeolitic imidazolate frameworks (ZIFs) are interesting materials for use in several aspects: energy storage material, gas sensing, and photocatalysis. The thermal stability and pyrolysis process are crucial in determining the active phase of the material. A deep understanding of the pyrolysis mechanism is in demand. Therefore, the thermodynamics and combustion process with different heating rates was examined, and the kinetic parameters were computed employing thermogravimetric tests. Based on the TG analysis of combustion, pyrolysis moves to the high-temperature region with an increase in heating rate. The decomposition process can be separated into the dehydration (300–503 K) and the pyrolysis reaction (703–1100 K). Three points of the decomposition process are performed by dynamical analysis owing to shifts of slopes, but the combustion process has only one stage. The Zeolitic imidazolate framework’s structure properties were examined using TDDFT-DFT/DMOl3 simulation techniques. Dynamical parameters, for instance, the possible mechanism, the pre-exponential factor, and the apparent activation energy are obtained through comparison using the Kissinger formula. The thermodynamics analysis of the Zn1-xCox-ZIF-8 materials is an effective way to explore the temperature influence on the process of pyrolysis, which can benefit several environment purifications, photocatalyst, and recent applications.

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Influence of Gamma-Irradiation on Structural, Optical and Photocatalytic Performance of TiO2 Nanoparticles Under Controlled Atmospheres

Cited by 34 publications

References 58 publications

Evaluation of Surface Characteristic of Ti- Implant Coated with Nano-Ceramic and Chitosan after Sterilization by Gamma Irradiation

Evaluation of Surface Characteristic of Ti- Implant Coated with Nano-Ceramic and Chitosan after Sterilization by Gamma Irradiation

Highly Efficient Defluoridation of Water through Reusable poly(aniline-co-o-aminophenol) Copolymer Modified Electrode Using Electrochemical Quartz Crystal Microbalance

Thermal Analysis of a Metal–Organic Framework ZnxCo1-X-ZIF-8 for Recent Applications

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