The effects of different methods of catalyst preparation on the hydro-electric plasma TiO2-catalyzed degradation of 2,4-dinitrophenol |
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| Authors: | Zu Zeng Qin Zi Li Liu Yu Feng Zeng Jian Hua Sun Ke Di Yang |
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| Affiliation: | (1) School of Chemistry and Chemical Engineering, Guangxi University, 530004 Nanning, People’s Republic of China;(2) School of Chemistry and Chemical Engineering, Guangzhou University, 510006 Guangzhou, People’s Republic of China; |
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| Abstract: | Hydro-electric plasma technology in the presence of TiO2 catalyst used to treat 2,4-dinitrophenol (2,4-DNP) simulated wastewater is reported. The catalytic activity of TiO2 prepared by ammonia precipitation was greater than the activity of the TiO2 prepared by NaOH precipitation. The presence of chloride ions during the preparation process of TiO2 had a large negative effect on the catalytic activity. The catalytic activity of TiO2 calcined at 673 K was significantly higher than the activity of the TiO2 that was calcined at higher and lower temperatures. After being calcined at 673 K, TiO2 was mainly in the anatase phase and degraded 81% of the 2,4-DNP after 10 min of treatment. |
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