Photocatalytic activity study and anatase phase stability of nano particles TiO2 modified by Malonic acid | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 27, Issue 1, February 2016, Pages 21-28 | ||
| Author | ||
| Dina A. Ali | ||
| Abstract | ||
| The nano particles Titanium dioxide (TiO2) were prepared using Malonic acid as a ligand and a chemical modifiers in three different mole ratios (2/1, 1/1 and 1/2 of TiCl4 /acid) used to give [Ti2(Mal)(OH)6(EtOH)4](EtOH)2. which characterized by F.T.IR and flame atomic absorption to suggest the type of binding between Ti+4 and the ligand and predict the formula structure . The complex studied theoretically using semi-empirical method of hyper chem. 8.0.3 program (PM3) .After calcination of the samples at three deferent temperature (500,700 and 900)ºC the observed TiO2 powders were characterized by X.R.D to determined the anitatse phase ratio in the samples. At 500ºC (Ti1:Mal1) sample give 100% anatase phase. At 700ºC 88% anatase retention for (Ti1-Mal.1) sample. The (S.E.M) and (A. F.M) were used to study the morphology of the samples and determined the particles size for the samples calcined at 500ºC. The photocatlytic studied of these samples calcine at 500,700and 900ºC was examined for degradation of Para nitro phenol under Uv-visible light and give a good rate of degradation especially for the samples that have small ratio of rutile.. | ||
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