Photocatalytic activity of LiMgPO4 in the hydroquinone decomposition and related surface phenomena
| Autor: | L. Yu. Buldakova, A. V. Dmitriev, N. A. Zhuravlev, Dina G. Kellerman, M. Yu. Yanchenko, M. O. Kalinkin |
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| Rok vydání: | 2020 |
| Předmět: |
Hydroquinone
Electrolysis of water 010405 organic chemistry Sorption 010402 general chemistry Photochemistry 01 natural sciences Catalysis 0104 chemical sciences chemistry.chemical_compound Reaction rate constant Adsorption chemistry Specific surface area Photocatalysis Physical and Theoretical Chemistry |
| Zdroj: | Reaction Kinetics, Mechanisms and Catalysis. 129:1061-1076 |
| ISSN: | 1878-5204 1878-5190 |
| Popis: | We report a study which exhibits for the first time the catalytic activity of LiMgPO4 in the reaction of hydroquinone oxidation. The samples were synthesized by solid state reaction, glycerol-nitrate method and ultrasonic spray pyrolysis. It was proved that LiMgPO4 makes the hydroquinone decomposition possible in the absence of irradiation and accelerates it under the action of light. It was determined that the lager is the specific surface area of the catalyst, the higher is the reaction rate constant. The high catalytic activity of LiMgPO4 in the oxidation reaction was explained by the existence of defects on the LiMgPO4 surface able to adsorb ions, radicals, etc. The UV–vis spectra clearly indicated the existence of defects. The results of voltammetric and NMR studies confirmed that the defective surface of LiMgPO4 easily adsorbs molecular and ionic groups of different nature formed during sorption and electrolysis of water. |
| Databáze: | OpenAIRE |
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