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Synthesis and Reaction Chemistry of Nanosize Monosodium Titanate

Synthesis and Reaction Chemistry of Nanosize Monosodium Titanate

Published on: February 23, 2016

Ti(0) nanoparticles via lithium-naphthalenide-driven reduction.

Christian Schöttle¹, Dmitry E Doronkin, Radian Popescu

¹Institut für Anorganische Chemie, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131 Karlsruhe, Germany. claus.feldmann@kit.edu.

Chemical Communications (Cambridge, England)

|April 19, 2016

Summary

Researchers synthesized pyrophoric metallic titanium (Ti(0)) nanoparticles using lithium naphthalenide reduction. These nanoparticles exhibit high reactivity, transforming directly into titanium carbide (TiC) while maintaining their size.

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Area of Science:

Nanomaterials Science
Inorganic Chemistry
Materials Science

Background:

Metallic nanoparticles offer unique properties due to their high surface area to volume ratio.
Controlling the synthesis of zero-valent metallic nanoparticles is crucial for their applications.
Titanium nanoparticles are of interest for catalysis and advanced materials.

Purpose of the Study:

To synthesize and characterize metallic titanium (Ti(0)) nanoparticles.
To investigate the reactivity and transformation pathways of these nanoparticles.
To confirm the size and chemical composition of the synthesized Ti(0) nanoparticles.

Main Methods:

Synthesis via lithium naphthalenide ([LiNaph])-driven reduction of TiCl4× 2THF in tetrahydrofuran (THF).
Characterization using High-Resolution Transmission Electron Microscopy (HRTEM) and Fast Fourier Transformation (FFT).
Analysis of optical spectra and X-ray absorption near edge structure (XANES) for chemical confirmation.

Main Results:

Successfully obtained metallic titanium (Ti(0)) nanoparticles with a diameter of 1.5 ± 0.4 nm.
Confirmed the chemical composition and nanostructure using HRTEM, FFT, optical spectra, and XANES.
Demonstrated the pyrophoric nature and high reactivity of Ti(0) nanoparticles.
Observed direct transformation of Ti(0) into titanium carbide (TiC) nanoparticles without significant size change.

Conclusions:

Lithium naphthalenide is an effective reducing agent for synthesizing Ti(0) nanoparticles.
The synthesized Ti(0) nanoparticles are highly reactive and can be converted to TiC.
The ability to maintain nanoparticle size during transformation is significant for controlled material synthesis.