Structural and sorption properties of nanoporous carbon materials obtained from walnut shells
| Autor: | S.A. Lisovska, R.V. Ilnytskyy, R.P. Lisovskyy, N.Ya. Ivanichok, Kh.V. Bandura, B.I. Rachiy |
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| Jazyk: | English<br />Ukrainian |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Фізика і хімія твердого тіла, Vol 24, Iss 2, Pp 348-353 (2023) |
| Druh dokumentu: | article |
| ISSN: | 1729-4428 2309-8589 |
| DOI: | 10.15330/pcss.24.2.348-353 |
| Popis: | Using the method of low-temperature nitrogen adsorption/desorption, the porous structure of nanoporous carbon materials obtained by alkaline activation of light industry waste (walnut shells) with subsequent thermal modification was investigated. The optimal relationship between temperature and modification time has been established. It is shown that an increase in the modification temperature reduces the transition time of micropores into mesopores and leads to a decrease in the specific surface area and total pore volume. Thus, the material obtained at a modification temperature of 400 ºC and a holding time of 120 min is characterized by the maximum specific surface area of 940 m2/g. It has been investigated that an increase in the time of temperature modification leads to an increase in specific electrical conductivity. |
| Databáze: | Directory of Open Access Journals |
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