Structural, textural and adsorption characteristics of bentonite-based composite
Нема приказа
Аутори
Ranđelović, Marjan S.Purenović, Milovan M.
Matović, Branko
Zarubica, Aleksandra R.
Momčilović, Milan Z.
Purenović, Jelena M.
Чланак у часопису
Метаподаци
Приказ свих података о документуАпстракт
An application of coatings composed of mixed (hydr)oxides over bentonite particles in aqueous suspension, in narrow range of pH, has been proven as a useful method for obtaining bentonite based composite with a developed, specific surface area and pronounced adsorption features toward cationic pollutants. This paper deals with detailed characterization of structure as well as textural and adsorption properties of bentonite based composite. The structure of the composite was examined by using XRD technique providing results that confirm changes in orientation of layered quasi-crystalline particles of montmorillonite, which is the most common component of bentonite clay. Surface area and pore volumes were determined by N-2 adsorption at -196 degrees C using BET, t-plot, alpha(s)-plot, Dubinin Radushkevich and Dolli-more Heal method. The results have revealed that the specific surface area for composite is about two times higher than for starting bentonite. Moreover, modification of bento...nite leads to significant changes in the meso- and microporosity. Adsorption properties of the composite were studied by analyzing the adsorption of dye methylene blue which was used in this study as a model of cationic pollutant in water. The most prominent role in the mechanism of dye molecules retention on the surface, interlayers and in the pores of the adsorbent is ascribed to establishing of electrostatic, van der Waals and hydrogen bonds. The shape of adsorption isotherm indicates that methylene blue can be adsorbed onto composite in more than one layer. (C) 2014 Elsevier Inc. All rights reserved.
Кључне речи:
Bentonite based composite / Structure / Textural properties / Adsorption / Methylene blueИзвор:
Microporous and Mesoporous Materials, 2014, 195, 67-74Финансирање / пројекти:
- Синтеза, процесирање и карактеризација наноструктурних материјала за примену у области енергије, механичког инжењерства, заштите животне стредине и биомедицине (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45012)
DOI: 10.1016/j.micromeso.2014.03.031
ISSN: 1387-1811; 1873-3093
WoS: 000337770900010
Scopus: 2-s2.0-84899881535
Колекције
Институција/група
VinčaTY - JOUR AU - Ranđelović, Marjan S. AU - Purenović, Milovan M. AU - Matović, Branko AU - Zarubica, Aleksandra R. AU - Momčilović, Milan Z. AU - Purenović, Jelena M. PY - 2014 UR - https://vinar.vin.bg.ac.rs/handle/123456789/6042 AB - An application of coatings composed of mixed (hydr)oxides over bentonite particles in aqueous suspension, in narrow range of pH, has been proven as a useful method for obtaining bentonite based composite with a developed, specific surface area and pronounced adsorption features toward cationic pollutants. This paper deals with detailed characterization of structure as well as textural and adsorption properties of bentonite based composite. The structure of the composite was examined by using XRD technique providing results that confirm changes in orientation of layered quasi-crystalline particles of montmorillonite, which is the most common component of bentonite clay. Surface area and pore volumes were determined by N-2 adsorption at -196 degrees C using BET, t-plot, alpha(s)-plot, Dubinin Radushkevich and Dolli-more Heal method. The results have revealed that the specific surface area for composite is about two times higher than for starting bentonite. Moreover, modification of bentonite leads to significant changes in the meso- and microporosity. Adsorption properties of the composite were studied by analyzing the adsorption of dye methylene blue which was used in this study as a model of cationic pollutant in water. The most prominent role in the mechanism of dye molecules retention on the surface, interlayers and in the pores of the adsorbent is ascribed to establishing of electrostatic, van der Waals and hydrogen bonds. The shape of adsorption isotherm indicates that methylene blue can be adsorbed onto composite in more than one layer. (C) 2014 Elsevier Inc. All rights reserved. T2 - Microporous and Mesoporous Materials T1 - Structural, textural and adsorption characteristics of bentonite-based composite VL - 195 SP - 67 EP - 74 DO - 10.1016/j.micromeso.2014.03.031 ER -
@article{ author = "Ranđelović, Marjan S. and Purenović, Milovan M. and Matović, Branko and Zarubica, Aleksandra R. and Momčilović, Milan Z. and Purenović, Jelena M.", year = "2014", abstract = "An application of coatings composed of mixed (hydr)oxides over bentonite particles in aqueous suspension, in narrow range of pH, has been proven as a useful method for obtaining bentonite based composite with a developed, specific surface area and pronounced adsorption features toward cationic pollutants. This paper deals with detailed characterization of structure as well as textural and adsorption properties of bentonite based composite. The structure of the composite was examined by using XRD technique providing results that confirm changes in orientation of layered quasi-crystalline particles of montmorillonite, which is the most common component of bentonite clay. Surface area and pore volumes were determined by N-2 adsorption at -196 degrees C using BET, t-plot, alpha(s)-plot, Dubinin Radushkevich and Dolli-more Heal method. The results have revealed that the specific surface area for composite is about two times higher than for starting bentonite. Moreover, modification of bentonite leads to significant changes in the meso- and microporosity. Adsorption properties of the composite were studied by analyzing the adsorption of dye methylene blue which was used in this study as a model of cationic pollutant in water. The most prominent role in the mechanism of dye molecules retention on the surface, interlayers and in the pores of the adsorbent is ascribed to establishing of electrostatic, van der Waals and hydrogen bonds. The shape of adsorption isotherm indicates that methylene blue can be adsorbed onto composite in more than one layer. (C) 2014 Elsevier Inc. All rights reserved.", journal = "Microporous and Mesoporous Materials", title = "Structural, textural and adsorption characteristics of bentonite-based composite", volume = "195", pages = "67-74", doi = "10.1016/j.micromeso.2014.03.031" }
Ranđelović, M. S., Purenović, M. M., Matović, B., Zarubica, A. R., Momčilović, M. Z.,& Purenović, J. M.. (2014). Structural, textural and adsorption characteristics of bentonite-based composite. in Microporous and Mesoporous Materials, 195, 67-74. https://doi.org/10.1016/j.micromeso.2014.03.031
Ranđelović MS, Purenović MM, Matović B, Zarubica AR, Momčilović MZ, Purenović JM. Structural, textural and adsorption characteristics of bentonite-based composite. in Microporous and Mesoporous Materials. 2014;195:67-74. doi:10.1016/j.micromeso.2014.03.031 .
Ranđelović, Marjan S., Purenović, Milovan M., Matović, Branko, Zarubica, Aleksandra R., Momčilović, Milan Z., Purenović, Jelena M., "Structural, textural and adsorption characteristics of bentonite-based composite" in Microporous and Mesoporous Materials, 195 (2014):67-74, https://doi.org/10.1016/j.micromeso.2014.03.031 . .