Mechanical milling of hydrothermally obtained CaTiO3 powders—morphology and photocatalytic activity

Stoyanova, D.; Stambolova, I.; Blaskov, V.; Zaharieva, Katerina; Avramova, I.; Dimitrov, O.; Vassilev, Stanislav V.; Eliyas, A.; Nedyalkov, N.N.

doi:10.1016/j.nanoso.2019.100301

Cited by 19 publications

(4 citation statements)

References 57 publications

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“…There is great disagreement between studies concerning the role of this structure parameter in the dye photodegradation. The multiple data have revealed that highly crystalline materials are efficient photocatalysts [67], but some researchers have reported that the amorphous or poorly crystallized structure could promote the photocatalytic properties [68,69]. In our case, the best photocatalyst G2 (it exhibited the highest photocatalytic discoloration rate) had a two-phase crystalline structure: poorly crystallized wurtzite and almost amorphous hydrozincite.…”

Section: Samplementioning

confidence: 66%

Modified Approach Using Mentha arvensis in the Synthesis of ZnO Nanoparticles—Textural, Structural, and Photocatalytic Properties

et al. 2022

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Zinc oxide arouses considerable interest since it has many applications—in microelectronics, environmental decontaminations, biomedicine, photocatalysis, corrosion, etc. The present investigation describes the green synthesis of nanosized ZnO particles using a low-cost, ecologically friendly approach compared to the classical methods, which are aimed at limiting their harmful effects on the environment. In this study, ZnO nanoparticles were prepared using an extract of Mentha arvensis (MA) leaves as a stabilizing/reducing agent, followed by hydrothermal treatment at 180 °C. The resulting powder samples were characterized by X-ray diffraction (XRD) phase analysis, infrared spectroscopy (IRS), scanning electron microscopy (SEM), and electron paramagnetic resonance (EPR). The specific surface area and pore size distribution were measured by the Brunauer–Emmett–Taylor (BET) method. Electronic paramagnetic resonance spectra were recorded at room temperature and at 123 K by a JEOL JES-FA 100 EPR spectrometer. The intensity of the bands within the range of 400–1700 cm−1 for biosynthesized ZnO (BS-Zn) powders decreased with the increase in the Mentha arvensis extract concentration. Upon increasing the plant extract concentration, the relative proportion of mesopores in the BS-Zn samples also increased. It was established that the photocatalytic performance of the biosynthesized powders was dependent on the MA concentration in the precursor solution. According to EPR and PL analyses, it was proved that there was a presence of singly ionized oxygen vacancies (V0+) and zinc interstitials (Zni). The use of the plant extract led to changes in the morphology, phase composition, and structure of the ZnO particles, which were responsible for the increased photocatalytic rate of discoloration of Malachite Green dye.

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Section: Samplementioning

confidence: 66%

Modified Approach Using Mentha arvensis in the Synthesis of ZnO Nanoparticles—Textural, Structural, and Photocatalytic Properties

et al. 2022

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“…Fourier Transform Infrared Spectroscopy. The infrared spectrum of perovskite (without treatment by HPEMP or DBD) included lines in the range of 400-800 cm -1 , conditioned by variation of structural groups in the crystal lattice of the mi neral, and lines in the range of 900-4000 cm -1 , connected with the presence of the impurities С-О, О-Н, and metal (Ме)-О groups localized on the mineral surface [5,9,[20][21][22].…”

Section: Resultsmentioning

confidence: 99%

Effect of high-power electromagnetic pulses and dielectric barrier discharges on physicochemical and flotation properties of perovskite

Chanturia¹,

Bunin²,

Ryazantseva³

et al. 2022

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“…The experimental results also showed that the TPI with 7 % carbon ber weight fraction appears to perform best in all the tests [15]. Some new nano materials have been introduced by few researchers [16][17][18][19][20] as a ller materials for the fabrication of TPI composites and they have also proved to be more effective in terms of thermal, mechanical and shape memory properties.…”

Section: Introductionmentioning

confidence: 87%

Influence of Silicon Carbide Nano Fillers on the Thermal, Mechanical and Shape Memory Properties of Tpi Shape Memory Polymer Composites

Loganathan

Vairamuthu

Anderson

et al. 2023

Preprint

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TPI, also known as artificial eucommia rubber, is a thermo-responsive SMP created by molecular recombination and modification with contemporary polymer synthesis and modification techniques. In this paper, TPI shape memory polymer is reinforced with different weight proportions (0, 0.2 %, 0.4 %, 0.6 %, 0.8 % and 1 %) of Silicon carbide nano particles (SiC) and specimens were fabricated with the aim of enhancing the properties of neat TPI polymer composites. Some thermo-mechanical characteristics were investigated and interpreted, including the differential scanning calorimeter (DSC) test, dynamic mechanical analysis (DMA) test, thermal conductivity test, compression test, and a few shape memory properties such as shape recovery ratio and shape recovery rate. TPI shape memory polymers exhibit strong shape memory capabilities and the best mechanical properties based on the testing results for the specimen TPI with 0.8 % SiC weight fraction.

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Mechanical milling of hydrothermally obtained CaTiO3 powders—morphology and photocatalytic activity

Cited by 19 publications

References 57 publications

Modified Approach Using Mentha arvensis in the Synthesis of ZnO Nanoparticles—Textural, Structural, and Photocatalytic Properties

Modified Approach Using Mentha arvensis in the Synthesis of ZnO Nanoparticles—Textural, Structural, and Photocatalytic Properties

Effect of high-power electromagnetic pulses and dielectric barrier discharges on physicochemical and flotation properties of perovskite

Influence of Silicon Carbide Nano Fillers on the Thermal, Mechanical and Shape Memory Properties of Tpi Shape Memory Polymer Composites

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