SYNTHESIS OF N-DOPED TIO2 NANO POWDER BY MICROWAVE PLASMA TORCH

摘要

relates to a method for the synthesis of metal oxide nanoparticles are activated photocatalyst powder in the visible light range from a metal compound vapor. In particular, a method for doping the titanium tetrachloride (TiCl ₄ ) of titanium dioxide from the (TiO ₂ ) and at the same time nitrogen synthesis of nano powder (N) on the steam is disclosed. Titanium tetrachloride vapor is decomposed in the electrically-induced electromagnetic wave plasma formed titanium dioxide vapor reacts with the oxidizing gas and steam at the same time, the metal oxide is titanium dioxide and steam react with the nitrogen radical of nitrogen-doped region formed in the plasma and high-temperature while the outside of the plasma region is quench the nitrogen-doped titanium dioxide (N-Doped TiO ₂ ) nano powder is synthesized. ; and present in order to achieve the above object invention is a magnetron for oscillating a conventional 2.45 electromagnetic waves (10); Power supply for supplying power to the magnetron (10) (20); On the other hand to protect the magnetron 10 to fully absorb the reflected wave which is reflected by the magnetron 10, a circulator for outputting an electromagnetic wave oscillated from the magnetron (10) (30); Incident wave and for outputting the electromagnetic waves transmitted through the hand circulator (30) for monitoring the magnitude of the reflected wave directional coupler (40); The directional coupler 40, 3-stub tuner to match the impedance to the input from the electromagnetic wave (50); 3-stub tuner 50 by the electromagnetic wave and the plasma vortex gas injected from the outside is generated and passed through the doping of the titanium dioxide and nitrogen synthesis reaction takes place the reactor (80); Winryo reactor supply (60) to stabilize the plasma in the vortex 80 of injecting a source gas required for the Su nitrogen-doped titanium dioxide synthesis reaction, the reactor 80, the powder collection part 70 which are collected from the composite powder contains.