Growth characteristics of spherical titanium oxide nanoparticles during the rapid gaseous detonation reaction--颗粒学报PARTICUOLOGY

Luo, N., Jing, H., Ma, Z., Wang, Y., Sun, G., & Liu, W. (2016). Growth characteristics of spherical titanium oxide nanoparticles during the rapid gaseous detonation reaction. Particuology, 26, 102-107. https://doi.org/10.1016/j.partic.2015.11.002

Growth characteristics of spherical titanium oxide nanoparticles during the rapid gaseous detonation reaction

Ning Luo^{a b *}, Hongwen Jing ^a, Zhanguo Ma ^a, Yingchao Wang ^a, Guilei Sun ^c, Weidong Liu ^b

a State Key Laboratory for Geo-mechanics and Deep Underground Engineering, School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China
b Laboratory for Precision and Nano Processing Technologies, School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney 2052, Australia
c Department of Safety Engineering, China Institute of Industrial Relations, Beijing 100048, China

10.1016/j.partic.2015.11.002

Volume 26, June 2016, Pages 102-107

Received 21 September 2015, Revised 23 October 2015, Accepted 14 November 2015, Available online 5 February 2016, Version of Record 18 April 2016.

E-mail: nluo@cumt.edu.cn; ning.luo@unsw.edu.au

Highlights

• Polymorphic TiO₂ nanoparticles with spherical shape were prepared by gas phase detonation reaction.

• Kruis model was used to simulate the growth characteristics of spherical TiO₂ nanoparticles.

• Calculated results of TiO₂ nanoparticles showed reasonable agreement with experimental results.

Abstract

The nanosize grain growth characteristics of spherical single-crystal titanium oxide (TiO₂) during the rapid gaseous detonation reaction are discussed. Based on the experimental conditions and the Chapman–Jouguet theory, the Kruis model was introduced to simulate the growth characteristics of spherical TiO₂ nanoparticles obtained under high pressure, high temperature and by rapid reaction. The results show that the numerical analysis can satisfactorily predict the growth characteristics of spherical TiO₂ nanoparticles with diameters of 15–300 nm at different affecting factors, such as concentration of particles, reaction temperature and time, which are in agreement with the obtained experimental results. We found that the increase of the gas-phase reaction temperature, time, and particle concentration affects the growth tendency of spherical nanocrystal TiO₂, which provides effective theoretical support for the controllable synthesis of multi-scale nanoparticles.

Graphical abstract

Keywords

Gaseous phase detonation chemistry; Chapman–Jouguet theory; Kruis model; Particle growth characterization

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