Sol–Gel Processing of Metal Compounds

Schubert, Ulrich S.

doi:10.1016/b0-08-043748-6/06213-7

Cited by 9 publications

(3 citation statements)

References 463 publications

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“…Figure 4a shows that, as the hydrolysis ratio increased in the range 100-175, the crystallite diameter decreased by approximately 50%, from 49 nm large crystallites (TP23.3, r = 100) to 26 nm crystallites (TP23.6, r = 175). This can likely be ascribed to a faster hydrolysis and condensation process, leading to the rapid nucleation of the NPs [34][35][36]. Furthermore, the size of the crystallite did not seem to be correlated with the intensity of the Raman peak E g(1) : the samples had high intensities, with the exception of the sample synthesized with r = 100 and r = 708 and 1450.…”

Section: Resultsmentioning

confidence: 93%

A Sol-Gel/Solvothermal Synthetic Approach to Titania Nanoparticles for Raman Thermometry

Pretto

Franca

Zani

et al. 2023

Sensors

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The accurate determination of the local temperature is one of the most important challenges in the field of nanotechnology and nanomedicine. For this purpose, different techniques and materials have been extensively studied in order to identify both the best-performing materials and the techniques with greatest sensitivity. In this study, the Raman technique was exploited for the determination of the local temperature as a non-contact technique and titania nanoparticles (NPs) were tested as nanothermometer Raman active material. Biocompatible titania NPs were synthesized following a combination of sol-gel and solvothermal green synthesis approaches, with the aim of obtaining pure anatase samples. In particular, the optimization of three different synthesis protocols allowed materials to be obtained with well-defined crystallite dimensions and good control over the final morphology and dispersibility. TiO2 powders were characterized by X-ray diffraction (XRD) analyses and room-temperature Raman measurements, to confirm that the synthesized samples were single-phase anatase titania, and using SEM measurements, which clearly showed the nanometric dimension of the NPs. Stokes and anti-Stokes Raman measurements were collected, with the excitation laser at 514.5 nm (CW Ar/Kr ion laser), in the temperature range of 293–323 K, a range of interest for biological applications. The power of the laser was carefully chosen in order to avoid possible heating due to the laser irradiation. The data support the possibility of evaluating the local temperature and show that TiO2 NPs possess high sensitivity and low uncertainty in the range of a few degrees as a Raman nanothermometer material.

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Section: Resultsmentioning

confidence: 93%

A Sol-Gel/Solvothermal Synthetic Approach to Titania Nanoparticles for Raman Thermometry

Pretto

Franca

Zani

et al. 2023

Sensors

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“…In the third method, referred to as route C, alkali acetate precursors were combined with acetic anhydride within the glove box. The acetic anhydride reacts with water, producing acetic acid and therefore protects the precursors from being hydrated [55,56]. After refluxing at 105 °C for 10 min in Ar and complete vacuum distillation for 20 min, 20 mL of acetic anhydride was added into the alkali precipitate.…”

Section: Methodsmentioning

confidence: 99%

Comparative Solution Synthesis of Mn Doped (Na,K)NbO₃ Thin Films

Kovacova

Yang

Jacques

et al. 2020

Chemistry A European J

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“…Whether gelation or precipitation eventually occurs is dependent on the overall reaction kinetics which can be controlled by reaction parameters such as pH gradients, relative concentrations of the reactants, temperature, and speed and order of mixing the reactants. Gels are usually favored by slower reaction conditions [32].…”

Section: Condensation and Polymerization Reactions: Routes Based On The Sol-gel Approachmentioning

confidence: 99%

Molecular Bottom-Up Approaches for the Synthesis of Inorganic and Hybrid Nanostructures

et al. 2021

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Chemical routes for the synthesis of nanostructures are fundamental in nanoscience. Among the different strategies for the production of nanostructures, this article reviews the fundamentals of the bottom-up approaches, focusing on wet chemistry synthesis. It offers a general view on the synthesis of different inorganic and hybrid organic–inorganic nanostructures such as ceramics, metal, and semiconductor nanoparticles, mesoporous structures, and metal–organic frameworks. This review article is especially written for a wide audience demanding a text focused on the basic concepts and ideas of the synthesis of inorganic and hybrid nanostructures. It is styled for both early researchers who are starting to work on this topic and also non-specialist readers with a basic background on chemistry. Updated references and texts that provide a deeper discussion and describing the different synthesis strategies in detail are given, as well as a section on the current perspectives and possible future evolution.

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Sol–Gel Processing of Metal Compounds

Cited by 9 publications

References 463 publications

A Sol-Gel/Solvothermal Synthetic Approach to Titania Nanoparticles for Raman Thermometry

A Sol-Gel/Solvothermal Synthetic Approach to Titania Nanoparticles for Raman Thermometry

Comparative Solution Synthesis of Mn Doped (Na,K)NbO₃ Thin Films

Molecular Bottom-Up Approaches for the Synthesis of Inorganic and Hybrid Nanostructures

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Sol–Gel Processing of Metal Compounds

Cited by 9 publications

References 463 publications

A Sol-Gel/Solvothermal Synthetic Approach to Titania Nanoparticles for Raman Thermometry

A Sol-Gel/Solvothermal Synthetic Approach to Titania Nanoparticles for Raman Thermometry

Comparative Solution Synthesis of Mn Doped (Na,K)NbO3 Thin Films

Molecular Bottom-Up Approaches for the Synthesis of Inorganic and Hybrid Nanostructures

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Comparative Solution Synthesis of Mn Doped (Na,K)NbO₃ Thin Films