Water Treatment of Effluents with Plasma and Photocatalysts

In our time there is an urgent need for treatment of effluents, so we can use
plasma as a source of energy to generate high energy electrons and active species
used in the treatment process. We herein use microwave plasma discharge to
generate titanium dioxide nano particles as a catalyst material. The X-ray
diffraction (XRD) analysis confirms the formation of polycrystalline anatase
titanium dioxide, The High resolution Transmission Electron Microscopy
(HRTEM) examine the particle size, and from this analysis it can be estimated
that the particle size of the formed powder in nano scale ranging from ~18 𝑛𝑛𝑛𝑛
to ~35 𝑛𝑛𝑛𝑛. The specific surface area and pore size of the mesoporous anatase
𝑇𝑇𝑇𝑇𝑇𝑇2 nano crystallites are calculated by using the nitrogen adsorption and
desorption isotherms and it was found that the surface area of 𝑇𝑇𝑇𝑇𝑇𝑇2 nanoparticles
is 226.458 𝑚𝑚2/𝑔𝑔, the total pore volume is equal to 0.1756 𝑐𝑐𝑐𝑐/𝑔𝑔 for pores
smaller than 202.3 Å (radius) at 𝑃𝑃/𝑃𝑃𝑃𝑃 = 0.95014 and the average pore radius
15.5103Å. The optical activity of the titanium dioxide powder is proved by
testing its great ability in degradation of methylene blue, MB.