Novel (Ni, Mn) co-doping CuFe5O8 black ceramic pigment with pinning strengthen effect in high-temperature black zirconia ceramic application

Ceramics International, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Language: Английский

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Advances on carbon nanomaterials and their applications in medical diagnosis and drug delivery

Colloids and Surfaces B Biointerfaces, Journal Year: 2024, Volume and Issue: 241, P. 114032 - 114032

Published: June 13, 2024

Language: Английский

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Degradation of Pollutants and Photocatalytic H₂ Evolution Using Carbon Nanotube/Ag Nanoparticle-Modified BaTiO₃ Nanoparticles

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(11), P. 12521 - 12538

Published: May 29, 2024

A ternary nanocomposite, BaTiO3–CNT/Ag, was synthesized via a coprecipitation method to function as photocatalyst for pollutant degradation and H2 production through water-splitting reaction. The successful preparation of the nanocomposite enhancement its morphological properties were confirmed Raman spectroscopy, X-ray diffraction/photoelectron spectroscopy (XRD/XPS), scanning/transmission electron microscopy (SEM/TEM) studies. Utilizing transient photocurrent, photoluminescence (PL) UV–visible diffuse reflectance (DRS), Mott–Schottky, electrochemical impedance (EIS) tests, it determined that incorporation carbon nanotube (CNT) Ag into BaTiO3 led promotion charge separation efficiency up 15 times, decrease in bandgap energy from 3.12 2.85 eV, larger band bending, lower electron/hole recombination, extensive internal resistance. In photodegradation-related studies, response surface methodology (RSM) performed experimental design optimize amounts dosage, irradiation time, initial dye concentration, yielding optimal values 0.681 g/L, 67.5 min, 1 mg/L, respectively. sample showed outstanding photocatalytic different organic water pollutants, coupled with remarkable stability reusability, evidenced by four-run cyclic experiment. Finally, evaluation revealed amount 542.4 μmol/g·h which is about 5 times higher than pure sample. This research provides thorough insight synthesis extremely enhances transfer abilities and, therefore, boosts photodegradation pollutants.

Language: Английский

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Effect of the sintering parameters on the structure and mechanical properties of zirconia-based ceramics

Ceramics International, Journal Year: 2024, Volume and Issue: 50(19), P. 35226 - 35235

Published: June 25, 2024

The paper presents the results of an investigations sintered zirconia ceramics that have been stabilized with Y2O3 and CeO2. initial powders were synthesized via decomposition fluoride salts, which determined morphological features dimensions particles. specific electroconsolidation process, performed using modified spark plasma sintering device, allowed for retention nanoscale grain sizes related properties ceramic composites. It was found as-obtained materials cerium oxide exhibited high bending strength 609 MPa, by ca. 33 % higher than yttria-stabilized ones (410 MPa). In turn, best combination hardness fracture toughness, K1С = 5.8 МPа·m1/2 аnd Нv 14.8 GPа, respectively, ZrO2+3 wt% Y2O3. This result can be attributed to chemical composition morphology powders, in turn is influenced synthesis conditions calcination time temperatures, as well parameters. particular, showed sensitivity variations temperatures holding times.

Language: Английский

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Innovation and Evaluations of 3D Printing Resins Modified with Zirconia Nanoparticles and Silver Nanoparticle-Immobilized Halloysite Nanotubes for Dental Restoration

Coatings, Journal Year: 2024, Volume and Issue: 14(3), P. 310 - 310

Published: March 2, 2024

Additive manufacturing technologies can be used to fabricate 3D-printed dental restorations. In this study, we evaluated the effectiveness of functionalized loading zirconium dioxide (ZrO2) nanoparticles and silver-nanoparticles-immobilized halloysite (HNC/Ag) nanotubes into 3D printing resins. We created resins by adding different mass fractions ZrO2 HNC/Ag. First, six groups samples containing were prepared, comprising five with one control group 1 16 %wt. Different HNC/Ag fillers combined mixture resin at ideal ratio from 7.5 The mechanical characteristics that assessed flexural strength, modulus, fracture toughness, microhardness. Additional rates 4 5 significantly increase toughness compared (p < 0.001). found harder other amounts NPs added modification appears %wt., advantageous in terms modulus. All additions raised resin’s hardness.

Language: Английский

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Detection and photothermal inactivation of Gram-positive and Gram-negative bloodstream bacteria using photonic crystal biosensor and plasmonic core–shell

RSC Advances, Journal Year: 2024, Volume and Issue: 14(16), P. 11594 - 11603

Published: Jan. 1, 2024

Plasmonics and core-shell nanomaterials hold great potential to develop pharmaceuticals medical equipment due their eco-friendly cost effective fabrication procedures. Despite these advancements, combating drug-resistant bacterial infections remains a global challenge. Therefore, this study aims introduce tailored theoretical framework for one-dimensional (1D) photonic crystal biosensor (PCB) composed of (ZrO

Language: Английский

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Cu-Related Paramagnetic Centers in Cu- and (Cu,Y)-Doped ZrO2 Nanopowders

Materials, Journal Year: 2025, Volume and Issue: 18(3), P. 605 - 605

Published: Jan. 29, 2025

In this work, we studied Cu-doped and (Cu,Y)-codoped ZrO2 nanopowders produced through a coprecipitation approach to identify the nature of Cu-related bulk surface paramagnetic centers. We conducted EPR, NMR, Raman scattering studies on Cu- (Cu,Y)-doped powders calcined at different temperatures. At low calcination temperatures (400 °C) Cu loading (0.1–1.0 mol.% CuO), EPR signal was found be attributed surface-related Cu-H2O complexes. For with higher content (up 8.0 superparamagnetic associated formation copper clusters observed. temperatures, destruction complexes promotes incorporation Cu2+ ions into nanocrystals Zr positions. Co-doping Y observed facilitate cation sites lower when compared ZrO2.

Language: Английский

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Assessment of electrical conductivity and thermal expansion in scandium-zirconium ceramic directly derived from red mud

Inorganic Chemistry Communications, Journal Year: 2025, Volume and Issue: unknown, P. 114227 - 114227

Published: Feb. 1, 2025

Language: Английский

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Advanced Approaches for Producing Nanocrystalline and Fine-Grained ZrO2-Based Powders(Review) I. Mechanical, Physical, and Chemical Methods (Excluding ‘Wet’ Chemistry)

Powder Metallurgy and Metal Ceramics, Journal Year: 2025, Volume and Issue: unknown

Published: March 31, 2025

Language: Английский

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Environmental Sustainability Based on Zirconium Dioxide Utilization in Non-Conventional Energy Applications

Environments, Journal Year: 2024, Volume and Issue: 11(12), P. 265 - 265

Published: Nov. 22, 2024

The increasing demand for sustainable energy solutions has prompted a significant interest in non-conventional sources, leading to the development of innovative materials that can enhance conversion and storage efficiency. This review paper explores pivotal role zirconium dioxide (ZrO2) industrial applications related technologies, highlighting its contributions circular economy. We discuss various synthesis methods ZrO2, including top-down bottom-up approaches, elucidating how these techniques influence material’s properties applicability. Furthermore, we examine unique characteristics nano-ZrO2 transformative potential systems. By synthesizing current research findings, this underscores significance ZrO2 promoting practices advancing economy through material reuse recycling strategies. insights provided herein aim inform future directions applications, ultimately fostering more landscape.

Language: Английский

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