| Autor: |
Ilya I. Ryzhkov, M. M. Simunin, Ivan V. Nemtsev, N. O. Ronzhin, E. V. Mikhlina, Vladimir S. Bondar, E. D. Posokhina |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
Доклады Академии наук. 489:44-48 |
| ISSN: |
0869-5652 |
| Popis: |
A composite based on aluminum oxide nanofibers (AONF) and modified nanodiamonds (MND) synthesized by explosion technique was made by mixing aqueous suspensions of components at a 5:1 weight ratio and incubating the mixture for 15 minutes at 32 ° C. It is assumed that the formation of a composite is provided by the difference in the zeta-potentials of the components - negative for MND and positive for AONF. Vacuum filtration of the mixture through a fluoroplastic filter (pore diameter of 0.6 µ m) formed discs with a diameter of 40 mm with subsequent heat treatment at 300 ° C to impart structural stability to the composite. Using scanning electron microscopy (SEM), it was revealed that the resulting composite has a network structure in which the MND particles are distributed over the AONF surface. It was established that MND incorporated into the composite catalyze the azo coupling reaction (phenol - 4-aminoantipyrine - H 2 O 2 ) with the formation of a colored product (quinoneimine). The applicability of the composite for the multiple detection of phenol in aqueous samples is demonstrated. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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