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Photocatalytic degradation of metronidazole in aqueous solution by niobate K |
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| Authors: | Huiyan Wang Gaoke Zhang Yuanyuan Gao |
| Affiliation: | (1) State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing , 210093, People’s Republic of China;(2) Department of Materials Science and Engineering,National Laboratory of Solid State Microstructures, Nanjing University, Nanjing , 210093, People’s Republic of China;(3) State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing, 210093, People’s Republic of China;(4) State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian , 116023, People’s Republic of China;(5) National Laboratory of Solid State Microstructures, Nanjing University, Nanjing , 210093, People’s Republic of China |
| Abstract: | The photocatalytic degradation of antibiotic metronidazole in aqueous solution by niobate K6Nb10.8O30 photocatalyst that was prepared using a soft-chemical method was studied by Fourier transform infrared spectroscopy and UV-Vis absorption spectrum. Metronidazole is very stable and is difficult to degrade under UV irradiation. K6Nb10.8O30 photocatalyst cannot degrade metronidazole without UV irradiation and shows very high photocatalytic activity for the degradation of metronidazole under UV irradiation. The photocatalytic degradation rate of metronidazole increased with increasing the dosage of K6Nb10.8O30 photocatalyst. The photocatalytic degradation reaction of metronidazole by niobate K6Nb10.8O30 follows the first-order kinetic equation. |
| Keywords: | niobate potassium niobate metronidazole photo- catalytic kinetics |
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