Dąbrowska Wiktoria, Gargol Mateusz, Gil-Kowalczyk Małgorzata, Nowicki Piotr
Department of Applied Chemistry, Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland.
Laboratory of Optical Fibers Technology, Faculty of Chemistry, Institute of Chemical Sciences, Maria Curie-Sklodowska University, M. Curie-Sklodowska Sq. 5, 20-031 Lublin, Poland.
Molecules. 2023 Jul 19;28(14):5508. doi: 10.3390/molecules28145508.
The main objective of the study was to prepare a series of new activated biocarbons by means of physical and chemical activation of elderberry inflorescence. The influence of carbon matrix nitrogenation/oxidation on the physicochemical properties and sorption abilities of the carbonaceous materials was investigated. The impact of initial dye concentration, pH and temperature of the system on methylene blue and rhodamine B removal efficiency was checked. It was shown that activation of elderberry inflorescences with CO or HPO, and their further modification by introducing nitrogen or oxygen functional groups, allowed us obtain a wide range of materials that differ significantly in terms of the chemical nature of the surface, degree of specific surface development and the type of porous structure generated. The samples prepared by chemical activation proved to be very effective in terms of cationic dyes adsorption. The maximum sorption capacity toward methylene blue and rhodamine B reached the level of 277.8 and 98.1 mg/g, respectively. A better fit to the experimental data was achieved with a Langmuir isotherm than a Freundlich one. It was also shown that the efficiency of methylene blue and rhodamine B adsorption from aqueous solutions decreased with increasing temperature of the system.
该研究的主要目的是通过对接骨木花序进行物理和化学活化来制备一系列新型活性生物炭。研究了碳基质的氮化/氧化对含碳材料物理化学性质和吸附能力的影响。考察了体系初始染料浓度、pH值和温度对亚甲基蓝和罗丹明B去除效率的影响。结果表明，用CO或HPO对接骨木花序进行活化，并通过引入氮或氧官能团对其进一步改性，使我们能够获得一系列材料，这些材料在表面化学性质、比表面积发展程度和产生的多孔结构类型方面存在显著差异。经化学活化制备的样品在阳离子染料吸附方面非常有效。对亚甲基蓝和罗丹明B的最大吸附容量分别达到277.8和98.1 mg/g。与弗伦德利希等温线相比，朗缪尔等温线对实验数据的拟合效果更好。研究还表明，随着体系温度的升高，水溶液中亚甲基蓝和罗丹明B的吸附效率降低。
