Download PDFOpen PDF in browserFabrication of translated metal doped TiO2 composites and its photocatalytic degradation toward the ammonia nitrogen compounds in farm wastewaterEasyChair Preprint 15779 pages•Date: October 2, 2019AbstractTiO2 and TiO2 doping translated metal composites, including Cu, Co, Ni, Ag, Au elements, were prepared by sol-gel method by using tetrabutyl titanate and different metal salts as raw materials. The TiO2 and its composites were characterized by means of UV-vis, FTIR, and fluorescence spectrometry, etc. Furtherly, photocatalytic degradation properties of TiO2, Cu/TiO2, Co/TiO2, Ni/TiO2, Ag/TiO2 and Au/TiO2 on ammonia-nitrogen compounds in farm wastewater were studied under simulated sunlight. The results showed that the translated metal doped TiO2 composites had higher photocatalytic degradation rate than pure TiO2, among which, the degradation rate of Ag/TiO2, Au/TiO2 and Ni/TiO2 reached to 30.3%, 29.9%, and 26.9%, respectively, and those of Cu/TiO2 and Co/TiO2 were 25.0% and 26.3%, respectively. Photocatalytic degradation conditions of ammonia nitrogen compounds were investigated by using Ag/TiO2 as photocatalyst. It was found that the degradation rate of ammonia nitrogen compounds could reach 37.5% when the initial concentration was 0.07 g/L, the time was 180 min, and the dosage of catalyst was 0.10%. Additionally, in comparison with natural sun light as the light source, the degradation efficiency of the catalyst was still reach 32.6%, which indicated the perfect application prospect in the treatment of farm wastewater. Keyphrases: Ammonia nitrogen compounds, Farm wastewater, Photocatalytic, TiO2
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