Adsorption behaviors of cationic and anionic dyes from aqueous solution on nanocomposite polypyrrole/SBA-15

Boukoussa, Bouhadjar; Hakiki, Aboubakr; Moulai, Sarah; Chikh, Karim; Kherroub, Djamal Eddine; Bouhadjar, Larbi; Guedal, Djahida; Messaoudi, Khadidja; Mokhtar, Fatima; Hamacha, Rachida

doi:10.1007/s10853-018-2060-7

Cited by 87 publications

(40 citation statements)

References 60 publications

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“…In this sense, mesoporous silicas have focused much interest [23][24][25]. These solids have high surface areas and well-developed mesoporous structure with adjustable and high pore size compared to zeolites [26][27][28]. They can be used without calcination as basic catalysts in several reactions due to the presence of siloxy (≡SiO − ) as basic sites [29,30].…”

Section: Introductionmentioning

confidence: 99%

Metal-Loaded Mesoporous MCM-41 for the Catalytic Wet Peroxide Oxidation (CWPO) of Acetaminophen

et al. 2021

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MCM-41 based catalysts (molar ratio Si/Al = 40) were prepared by a hydrothermal route, modified by ionic exchange with different metals (Cu, Cr, Fe and Zn) and finally calcined at 550 °C. The catalysts were fully characterized by different techniques that confirmed the formation of oxides of the different metals on the surfaces of all materials. Low-angle X-ray diffraction (XRD) analyses showed that calcination resulted in the incorporation of metallic Zn, Fe and Cr in the framework of MCM-41, while in the case of Cu, thin layers of CuO were formed on the surface of MCM-41. The solids obtained were tested in the catalytic wet peroxide oxidation (CWPO) of acetaminophen at different temperatures (25–55 °C). The activity followed the order: Cr/MCM-41 ≥ Fe/MCM-41 > Cu/MCM-41 > Zn/MCM-41. The increase of the reaction temperature improved the performance and activity of Cr/MCM-41 and Fe/MCM-41 catalysts, which achieved complete conversion of acetaminophen in short reaction times (15 min in the case of Cr/MCM-41). Fe/MCM-41 and Cr/MCM-41 were submitted to long-term experiments, being the Fe/MCM-41 catalyst the most stable with a very low metal leaching. The leaching results were better than those previously reported in the literature, confirming the high stability of Fe/MCM-41 catalysts synthesized in this study.

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Section: Introductionmentioning

confidence: 99%

Metal-Loaded Mesoporous MCM-41 for the Catalytic Wet Peroxide Oxidation (CWPO) of Acetaminophen

et al. 2021

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“…The Figure 1 shows the infrared spectra of SBA-15 and its modified counterparts. All materials with or without modification have several characteristic absorption bands corresponding to the mesoporous silica materials [11,25]. A broad symmetrical absorption band at 3400 cm -1 is attributed to isolated silanol groups, this band is present in all samples, and it increases during the modification of the surface by the amine-copper complexes.…”

Section: Structural Propertiesmentioning

confidence: 95%

“…Among the materials suitable for adsorption of CO 2 , there are mesoporous silicas (such as SBA-15, MCM-48 and MCM-41) which have interesting physico-chemical properties [5,11,[22][23][24][25][26][27][28]. They are useful for a large number of applications mainly due to their high surface areas and large pore sizes.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…The mesoporous silica SBA-15 was prepared hydrothermally using TEOS as a silica source, P123 as a structuring agent. The preparation method was well described in our previously published work [5,11,25,27]. The calcined mesoporous silica SBA-15 has been functionalized by different aminosilanes according to the method described in the literature [5,27] According to the literature, the functionalized materials were treated in a 100 mL of solution containing Cu(NO 3 ) 2 (1M) [5].…”

Section: Preparation Of Adsorbentsmentioning

confidence: 99%

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Mesoporous silica supported amine and amine-copper complex for CO2 adsorption: Detailed reaction mechanism of hydrophilic character and CO2 retention

Boukoussa

Hakiki

Bouazizi

et al. 2019

Journal of Molecular Structure

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The mesoporous silica SBA-15 functionalized with various amines was prepared and then doped with copper (Cu ++). The modified materials were tested for the retention of CO 2 at room temperature using temperature-programmed desorption (CO 2-TPD). Several parameters affecting the CO 2 retention capacity (CRC) were investigated such as effect of the nature of amine groups, repetitive adsorption-desorption cycles and dispersion of copper. CO 2-TPD and H 2 O-TPD were employed in order to correlate the hydrophilic character with the CO 2 retention capacity. The obtained results showed that amines-functionalized mesoporous materials containing their own moisture have good results towards the retention of CO 2. Especially the triamine-functionalized SBA-15 has the greatest CRC value which results in the increase of the number of adsorption sites. The reuse of these solids in three adsorption/desorption cycles showed higher stability with a slight decrease in CRC. The dispersion of copper showed a progressive decrease in the CRC value. The correlation between the Cu% and the CRC shows that the value of the CRC decreases with increasing Cu% due to complexation of the adsorption sites (amines) by acid sites (copper).

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“…In addition, due to the color they provide to fluvial beds, they impede the natural photosynthetic activity of aquatic plants, preventing the penetration of sunlight, damaging the aquatic biota directly or indirectly [6]. Several scientific publications are focused in studies on the treatment of waste with dye loading by means of physical, chemical, biological and electrochemical treatments; however, none of these methods eliminates the harmful substances, in most cases, only the solutions are decolorized, therefore they are used in combination [4,5,7], which requires complex methodologies and higher costs [8,9]. A solution, economically viable, for this problem is the adsorption using as adsorbent material clays, abundant in nature and with adsorptive properties widely studied, which come mainly from its capacity of cation exchange and large surface area [10].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of anionic dyes monoazo and diazo using organo-bentonites

Stagnaro

Volzone

2018

SN Appl. Sci.

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Adsorption of orange and yellow dyes, containing mono-and di-azoic groups, respectively, were studied by the use of a natural and organo-bentonites, which were obtained by treatment with hexadecyl-trimethyl-ammonium bromide (Br-HDTMA). Two different bentonites from Argentina were used. X-ray diffraction, UV-visible spectrometry, infrared spectrometry and thermal analysis were used for the characterizations. The results were interpreted by using isotherms that fit properly to the mathematical model of Langmuir. The structural and physicochemical properties of the clay, and the arrangement of hexadecyl-trimethyl-ammonium cation (HDTMA +) into the interlayer of the smectites, the main clay mineral composition of the bentonites, were responsible for the retention of dyes. The retention of the azo dyes not only increased with the HDTMA + modification of the bentonites but also depended on the clay mineral (smectite types) composition of the pristine bentonite.

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Adsorption behaviors of cationic and anionic dyes from aqueous solution on nanocomposite polypyrrole/SBA-15

Cited by 87 publications

References 60 publications

Metal-Loaded Mesoporous MCM-41 for the Catalytic Wet Peroxide Oxidation (CWPO) of Acetaminophen

Metal-Loaded Mesoporous MCM-41 for the Catalytic Wet Peroxide Oxidation (CWPO) of Acetaminophen

Mesoporous silica supported amine and amine-copper complex for CO2 adsorption: Detailed reaction mechanism of hydrophilic character and CO2 retention

Adsorption of anionic dyes monoazo and diazo using organo-bentonites

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