TY - JOUR
T1 - An atmospheric pressure microplasma process for continuous synthesis of titanium nitride nanoparticles
AU - Lin, L.
AU - Starostine, S.
AU - Wang, Q.
AU - Hessel, V.
PY - 2017/8/1
Y1 - 2017/8/1
N2 - This research studies a continuous process for the direct synthesis of titanium nitride nanoparticles assisted by an atmospheric pressure microplasma. Titanium tetrachloride (TiCl4) is used as precursor and nitrogen is used as reacting gas. Composition and microstructure analysis (SEM, EDX, TEM, HRTEM, XRD and XPS) of the synthesized nanoparticles reveals that nanometer-sized titanium nitride (TiN) with polycrystalline nature can be directly prepared by the studied process, and the admixture of H2 gas in plasma during synthesis process can be an effective way to reduce the oxidation of TiN nanoparticles. The influence of the dissipated power and H2 concentration on the optical emission spectra of the microplasma in the operating reactor is investigated. The characteristics gas temperature of the plasma filament is estimated from the emission averaged spectra. A hypothesized mechanism of TiN synthesis in microplasma is illustrated, and comparisons with preceding researches are carried out. Based on process analysis and experimental results, the feasibility of the upscale towards industrial level production is discussed.
AB - This research studies a continuous process for the direct synthesis of titanium nitride nanoparticles assisted by an atmospheric pressure microplasma. Titanium tetrachloride (TiCl4) is used as precursor and nitrogen is used as reacting gas. Composition and microstructure analysis (SEM, EDX, TEM, HRTEM, XRD and XPS) of the synthesized nanoparticles reveals that nanometer-sized titanium nitride (TiN) with polycrystalline nature can be directly prepared by the studied process, and the admixture of H2 gas in plasma during synthesis process can be an effective way to reduce the oxidation of TiN nanoparticles. The influence of the dissipated power and H2 concentration on the optical emission spectra of the microplasma in the operating reactor is investigated. The characteristics gas temperature of the plasma filament is estimated from the emission averaged spectra. A hypothesized mechanism of TiN synthesis in microplasma is illustrated, and comparisons with preceding researches are carried out. Based on process analysis and experimental results, the feasibility of the upscale towards industrial level production is discussed.
KW - Atmospheric pressure plasma
KW - Microplasma
KW - Nanomaterial synthesis
KW - Titanium nitride
UR - http://www.scopus.com/inward/record.url?scp=85016732772&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2017.03.128
DO - 10.1016/j.cej.2017.03.128
M3 - Article
SN - 1385-8947
VL - 321
SP - 447
EP - 457
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
M1 - 447-457
ER -