Low-Temperature Synthesis of Titanium Oxynitride Nanoparticles

Nanomaterials

Khosrow Rahimi¹  Johanna Henkel¹  Tobias Caumanns²  Andreas Hoffmann³  Felicitas Jansen³  AlexanderJ. C. Kuehne³ 

[1] DWI—Leibniz Institute for Interactive Materials, Forckenbeckstraße 50, 52076 Aachen, Germany;GFE Central Facility for Electron Microscopy, RWTH Aachen University, 52074 Aachen, Germany;Institute of Organic and Macromolecular Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany;

关键词: metal oxynitride;    nanoparticles;    colloid synthesis;    energy storage;    capacitor;   

DOI  :  10.3390/nano11040847

来源: DOAJ

【 摘 要 】

The synthesis of transition metal oxynitrides is complicated by extreme reaction conditions such as high temperatures and/or high pressures. Here, we show an unprecedented solution-based synthesis of narrowly dispersed titanium oxynitride nanoparticles of cubic shape and average size of 65 nm. Their synthesis is performed by using titanium tetrafluoride and lithium nitride as precursors alongside trioctylphosphine oxide (TOPO) and cetrimonium bromide (CTAB) as stabilizers at temperatures as low as 250 °C. The obtained nanoparticles are characterized in terms of their shape and optical properties, as well as their crystalline rock-salt structure, as confirmed by XRD and HRTEM analysis. We also determine the composition and nitrogen content of the synthesized particles using XPS and EELS. Finally, we investigate the applicability of our titanium oxynitride nanoparticles by compounding them into carbon fiber electrodes to showcase their applicability in energy storage devices. Electrodes with titanium oxynitride nanoparticles exhibit increased capacity compared to the pure carbon material.

【 授权许可】

Unknown