| The effects of N-doped TiO2 nanotubes grown by two steps anodizing on the naturally reduction of V, Ba, As, Cr and Mn contamination of water |
| Paper ID : 1105-UFGNSM-FULL |
| Authors: |
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mahmood moradi1, saeid behaein *2, Ahmad Soheil Chitsazzadeh3, fateme ghasemi4 1Physics Department, College of Sciences, Shiraz University, Shiraz, Iran 2a Physics Department, College of Sciences, Shiraz University, Shiraz, Iran 3No205_Espadana hotel_Kish island_Hormozgan_Iran 4Chemical Department, College of Sciences, Shiraz University, Shiraz, Iran |
| Abstract: |
| Usually water are contaminated by industrial factories where there are toxic and heavy metals in the sewage therefor we use sunlight to remove this kind of contamination. In this study by using the photocatalystic effects of titanium dioxide nanotubes (TiO2nts) to achieve our aim. We growth the TiO2nts by anodization method, first the piece of pure titanium sheet (%99/97) are cleaned in three steps. Then, by applying an anodization voltage of 60Volt in the ethylene glycol (EG) electrolyte between the titanium as anode and a platinum sheet as cathode. The grown TiO2nts were removed from titanium surface in the first step, because the top of TiO2nts covered by porous or grass-like structure. Then, we repeated the anodization method in the same conditions to open the top TiO2nts. After second step anodization we used the two N-doping methods in order to increase the photocatalystic effects. At first we put the grown TiO2nts in ammonium 1M for 12 hours and used the chemical vapor deposition (CVD) as the next method which Nitrogen gas was doped. We contaminated deionized water by using Manganese(Mn) and salts of Vanadium(NH4VO3), Chromium(K2Cr2O7), Barium(BaCl2.2H2O), Arsenic(As2O3) at a concentration of 10 ppm with three different PH. After completing the steps outlined so far, to test the photocatalystic effects of TiO2nts on the contamination of water we putted them in the contaminated water for 24 hours in a dark space. In the next step the water irradiated by UV for 24 hours. Eventually the water was tested by inductively coupled plasma optical emission spectrometry (ICP-OES). The results showed a significantly reduction of water contamination. |
| Keywords: |
| titanium dioxide nanotubes, TiO2, N-doped TiO2 nanotubes, naturally reduction of contamination of water |
| Status : Paper Accepted (Poster Presentation) |
