Extract lithium from clay-type lithium ore by mixed acid and its mechanism

Particuology, Год журнала: 2024, Номер 91, С. 323 - 332

Опубликована: Апрель 16, 2024

Язык: Английский

---

Crystallographic characterization of Ag‐doping in nanocrystallite hydroxyapatite and evaluation of photocatalytic activity of organic pollutants

International Journal of Ceramic Engineering & Science, Год журнала: 2025, Номер 7(1)

Опубликована: Янв. 1, 2025

Abstract Pure and different percentages (0.25, 0.5, 1.0, 2.5%) of silver (Ag) doped hydroxyapatites (Hap) were synthesized employing the wet chemical precipitation method. The samples characterized with aid X‐ray diffraction (phase analysis, crystallographic characterization, crystal size calculation using Scherrer equation models), scanning electron microscopy, optical bandgap energy. Hap containing 0.25% Ag showed better photocatalytic activity in various dye concentrations, catalyst doses, pH. At a very low dose (0.375 g/L) 20 ppm pollutant concentration, reaction rate, rate constant evaluated for Congo Red dye, ciprofloxacin, amoxicillin, levofloxacin. maximum (0.0028 min −1 ) (9.657 × 10 −8 mole L ·min found respectively, 0.25_Ag‐Hap (0.25% Ag‐doped Hap). energies valance band (3.14 eV) conduction (−0.36 lower case than other samples. Simplified mechanisms proposed degradation

Язык: Английский

---

Morphological change of ZnO using hydrothermal technique and organic modifiers

Nano-Structures & Nano-Objects, Год журнала: 2025, Номер 41, С. 101436 - 101436

Опубликована: Янв. 11, 2025

Язык: Английский

---

Synthesis and characterization of nano dicalcium phosphate dihydrate from biogenic sources

Results in Materials, Год журнала: 2025, Номер unknown, С. 100666 - 100666

Опубликована: Янв. 1, 2025

Язык: Английский

---

Synthesis and photocatalytic activity of anatase TiO2 xerogels: Effect of atomic radius of copper, cobalt, and cadmium dopants

Journal of Applied Physics, Год журнала: 2025, Номер 137(12)

Опубликована: Март 24, 2025

This study investigates the influence of atomic radii copper, cobalt, and cadmium on photocatalytic activity anatase TiO2 xerogels synthesized via solgel method. All samples were annealed at 550 °C for 20 min crystallized into pure phase, as confirmed by XRD Raman spectroscopy. Dopant incorporation matrix reduced grain size (from 24.01 to 9.78 nm) decreased bandgap energy 3.44 3.19 eV). Photocatalytic degradation methylene blue (MB) revealed enhanced doped samples, with rates increasing from 71.65% undoped TiO 79.29%, 86.54%, 94.13% 2 at. % Cu-TiO2, Co-TiO2, Cd-doped TiO2, respectively. Among dopants, Cd-TiO2 exhibited highest efficiency fastest rate. Furthermore, sample demonstrated excellent stability, retaining more than 90% its over six cycles only a 4% loss in capacity.

Язык: Английский

---

Fabrication of hydroxyapatite-based scaffold and improvement of hardness by control addition of silica

Next research., Год журнала: 2025, Номер unknown, С. 100315 - 100315

Опубликована: Апрель 1, 2025

Язык: Английский

---

Optimizing photocatalysts based on substrate and dopant modifications coupled with use of oxidants for enhanced ciprofloxacin degradation

Journal of Molecular Liquids, Год журнала: 2025, Номер unknown, С. 127682 - 127682

Опубликована: Апрель 1, 2025

Язык: Английский

---

The effects of pH on the morphology and structural properties of Er/Yb co-doped hydroxyapatite

Journal of Physical Chemistry and Functional Materials, Год журнала: 2024, Номер 7(1), С. 11 - 16

Опубликована: Апрель 1, 2024

The present study includes a detailed investigation of the effects various pH conditions used in synthesis on structural properties hydroxyapatite (HAp) co-doped with Er and Yb at constant value. In this context, we changed value from 8.5 to 11.0 steps 0.5 synthesis. It was seen that different causes significant variations crystallite size, lattice parameters, unit cell volume, morphology. plays key role Er/Yb HAps.

Язык: Английский

---

Impact of polymer structure in polyurethane topcoats on anti-icing properties

Applied Surface Science, Год журнала: 2024, Номер 667, С. 160402 - 160402

Опубликована: Май 28, 2024

Язык: Английский

---

Crystal structure modification of nano-hydroxyapatite using organic modifiers and hydrothermal technique

RSC Advances, Год журнала: 2024, Номер 14(40), С. 29665 - 29674

Опубликована: Янв. 1, 2024

Hydroxyapatite (HAp) synthesis was achieved through a hydrothermal method involving orthophosphoric acid and calcium hydroxide. Different organic modifiers such as urea, naphthalene, palmitic were applied in the reaction system to modify crystallite size along with morphology of HAp. The synthesized HAp validated

Язык: Английский

---