THE INVESTIGATION OF THE POROUS STRUCTURE OF CARBON SORBENTS BASED ON β-CYCLODEXTRIN FOR USE IN ENVIRONMENTAL PROTECTION TECHNOLOGIES
Author:
Bordun IhorORCID, , Malovanyy MyroslavORCID, Szymczykiewicz EwelinaORCID, ,
Abstract
In this paper, the porous structure of three types of β-cyclodextrin (β-CD) carbons was synthesized and investigated. The first carbon was obtained from pure β-CD, the second carbon was synthesized from β-CD using the KOH activator, and the third carbon was synthesized from pure β-CD with additional ultrasonic treatment in the non-cavitation mode at the last stage. It was found that the carbon from pure β-CD has a micromesoporous structure with a small specific surface area (~35 m2/g). Activation with KOH causes a significant increase in the specific surface area (~654 m2/g) due to an increase in the content of micropores with an average size of 1,25 nm. The ultrasonic treatment causes mechanical grinding and oxidation of the carbon surface. It has been shown that such treatment increases the mesopore content and significantly changes the mesopore size distribution. It has been established that the oxidation of the β-CD carbon surface after ultrasonic treatment causes an increase in its hydrophilicity of up to 83,1%. The increase in hydrophilicity will allow more efficient use of synthesized carbon and composites based on it in solving the problems of environmental safety in water environments.
Publisher
Lviv Polytechnic National University
Subject
General Earth and Planetary Sciences,General Environmental Science
Reference34 articles.
1. 1. Almeida, L., Felzenszwalb, I., Marques, M., & Cruz, C. (2020). Nanotechnology activities: Environmental Protection Regulatory Issues Data. Heliyon, 6(10). doi: https://doi.org/10.1016/j.heliyon.2020.e05303 2. 2. Ariga, K. (2021). Nanoarchitectonics can save our planet: Nanoarchitectonics for energy and environment. Journal of Inorganic and Organometallic Polymers and Materials, 31(6), 2243-2244. doi: https://doi.org/10.1007/s10904-021-02002-4 3. 3. Ariga, K., Jackman, J. A., Cho, N. J., Hsu, S., Shrestha, L. K., Mori, T., & Takeya, J. (2018). Nanoarchitectonic‐based material platforms for environmental and bioprocessing applications. The Chemical Record, 19(9), 1891-1912. doi: https://doi.org/10.1002/tcr.201800103 4. 4. Ariga, K., Li, M., Richards, G. J., & Hill, J. P. (2011). Nanoarchitectonics: A conceptual paradigm for design and synthesis of dimension-controlled functional nanomaterials. Journal of Nanoscience and Nanotechnology, 11(1), 1-13. doi: https://doi.org/10.1166/jnn.2011.3839 5. 5. Balaban, O. V., Venhryn, B. Ya., Grygorchak, I. I., Mudry, S. I., Kulyk, Yu. O., Rachiy, B. I., & Lisovskiy, R. P. (2014) Size Effects at Ultrasonic Treatment of Nanoporous Carbon and Improved characteristics of Supercapacitors on Its Base. Nanosystems, Nanomaterials, Nanotechnologies, 12(2), 225-238.
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