Vermiculite modified with alkylammonium salts: characterization and sorption of ibuprofen and paracetamol

Batista, Luis Fernando A.; Mira, Princys S. de; Presbiteris, Rafael Jörg Bieberbach De; Grassi, Marco Tadeu; Salata, Regiane; Melo, Vander Freitas; Abate, Gilberto

doi:10.1007/s11696-021-01643-6

Cited by 7 publications

(12 citation statements)

References 82 publications

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“…According to Figure S1, the spectrum of GA0 shows a peak at 3360 cm –1 , representing the asymmetric stretching vibration of NH 2 and symmetric stretching of NH, as well as the presence of surfactant. The sharp peaks at 2914 and 2848 cm –1 represent the stretching of alkyl groups (CH 3 and CH 2 , respectively). , The stretching band at 1655 cm –1 reveals the existence of the CO group of PAmm, as well as the similar group of LMC, confirming the presence of LMC in the hydrogel structure. , Further,the peak at 1452 cm –1 corresponds to the stretching vibrations . With the addition of LGA, the peak intensities greatly vary, representing the interaction of LGA with the surfactant and polymer chains.…”

Section: Resultsmentioning

confidence: 88%

“…The sharp peaks at 2914 and 2848 cm −1 represent the stretching of alkyl groups (�CH 3 and CH 2 , respectively). 35,48 The stretching band at 1655 cm −1 reveals the existence of the �C�O group of PAmm, as well as the similar group of LMC, confirming the presence of LMC in the hydrogel structure. 49,50 Further,the peak at 1452 cm −1 corresponds to the stretching vibrations.…”

Section: ■ Results and Discussionmentioning

confidence: 98%

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Micelle–Micelle Cross-Linked Highly Stretchable Conductive Hydrogels for Potential Applications of Strain and Electronic Skin Sensors

et al. 2023

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Wearable sensors made of flexible and stretchable hydrogels have garnered significant attention. However, their use has been limited by poor mechanical performance, such as poor toughness, poor self-recovery, and a large response–recovery time. To overcome these limitations, we have developed a novel cross-linking agent-based hydrogel with high stretchability, high toughness, antifatigue properties, and good conductivity. These hydrogels were developed by introducing l-glutamic acid (LGA) into hydrophobically cross-linked polyacrylamide (PAmm) chains. In this system, LGA dynamically cross-linked the micelle–micelle and micelle–polymer chains and greatly regulates the mechanical properties of the hydrogels. The noncovalent synergistic interactions that came with the insertion of LGA enable the hydrogels to achieve high stretchability and high stress values, with fast self-recovery and antifatigue behaviors without the help of foreign stimuli. Additionally, LGA-based hydrogels can function as durable and highly sensitive strain sensors for detecting various mechanical deformations with a fast response–recovery time and high gauge factor value. As a result, the hydrogels have the capability to be designed as wearable strain sensors that are capable of detecting large human joint motions, such as neck twisting, neck bending, and wrist, finger, and elbow movements. Similarly, these hydrogels are capable of monitoring different subtle human motions such as speaking and differentiating between different words, swallowing, and drinking through larynx vibrations. Besides these large and subtle human motions, hydrogels have the ability to differentiate and reproduce different written words with reliability. These LGA-regulated hydrogels have potential applications in electric skins, medical monitoring, soft robotics, and flexible touch panels.

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Section: Resultsmentioning

confidence: 88%

Section: ■ Results and Discussionmentioning

confidence: 98%

Micelle–Micelle Cross-Linked Highly Stretchable Conductive Hydrogels for Potential Applications of Strain and Electronic Skin Sensors

et al. 2023

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“…The structural formulas are presented in Figure 1. proved the possibility of the potential application of organoclays for removing pharmaceuticals from water such as analgesic, antibiotic or psychoactive drugs [25][26][27][28][29][30][31][32].…”

Section: Methodsmentioning

confidence: 99%

“…The adsorption of sulfamethoxazole was the most effective using beidellite modified by tetraoctylphosphonium. Additionally, other authors proved the possibility of the potential application of organoclays for removing pharmaceuticals from water such as analgesic, antibiotic or psychoactive drugs [25][26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Organobeidellites for Removal of Anti-Inflammatory Drugs from Aqueous Solutions

et al. 2021

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Diclofenac (DC) and ibuprofen (IBU) are widely prescribed non-steroidal anti-inflammatory drugs, the consumption of which has rapidly increased in recent years. The biodegradability of pharmaceuticals is negligible and their removal efficiency by wastewater treatment is very low. Therefore, the beidelitte (BEI) as unique nanomaterial was modified by the following different surfactants: cetylpyridinium (CP), benzalkonium (BA) and tetradecyltrimethylammonium (TD) bromides. Organobeidellites were tested as potential nanosorbents for analgesics. The organobeidellites were characterized using X-ray powder diffraction (XRD), Infrared spectroscopy (IR), Thermogravimetry and differential thermal analysis (TG/DTA) and scanning microscopy (SEM). The equilibrium concentrations of analgesics in solution were determined using UV-VIS spectroscopy. The intercalation of surfactants into BEI structure was confirmed both using XRD analysis due to an increase in basal spacing from 1.53 to 2.01 nm for BEI_BA and IR by decreasing in the intensities of bands related to the adsorbed water. SEM proved successful in the uploading of surfactants by a rougher and eroded organobeidellite surface. TG/DTA evaluated the decrease in dehydration/dehydroxylation temperatures due to higher hydrophobicity. The Sorption experiments demonstrated a sufficient sorption ability for IBU (55–86%) and an excellent ability for DC (over 90%). The maximum adsorption capacity was found for BEI_BA-DC (49.02 mg·g−1). The adsorption according to surfactant type follows the order BEI_BA > BEI_TD > BEI_CP.

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“…15 However, these capacities are lower compared to other IBP adsorbents with quinoline-containing organo-vermiculites (240.69 mg/ g). 16 Presently, most research has centered on the development of organo-vermiculites by optimizing alkyl chain length and spacer structures, whereas limited attention was devoted to the incorporation of functional groups into the alkyl chain. These functional groups are pivotal in mediating interactions between IBP and modifiers, presenting an opportunity to further enhance the adsorption efficiency.…”

Section: Introductionmentioning

confidence: 99%

Reviving the Potential of Vermiculite-Based Adsorbents: Exceptional Ibuprofen Removal on Novel Amide-Containing Gemini Surfactants

Hu,

2024

ACS Omega

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In this study, we introduce a novel series of gemini surfactants with amide groups (HDAB, HDAHD, and HDAPX) and use these surfactants to decorate sodium vermiculite (Na-Vt) for the adsorption of Ibuprofen (IBP) from wastewater. Exceptional IBP uptake on organo-vermiculites (organo-Vts) is obtained, with maximum adsorption capacities reaching 249.87, 342.21, and 460.15 mg/g for HDAB-Vt, HDAHD-Vt, and HDAPX-Vt (C 0 = 500 mg/L, modifier dosage = 0.2 CEC), respectively. The adsorption of IBP is well fitted by pseudo-second-order, intraparticle diffusion, and Freundlich isotherm models, verifying chemical adsorption processes with multilayer arrangement of IBP in organo-Vts. Thermodynamically, the removal of IBP on HDAHD-Vt is exothermic, while the endothermic nature aptly describes the adsorption process of HDAB-Vt and HDAPX-Vt. Moreover, organo-Vts can be stably regenerated in three cycles. Outstanding adsorption performance of organo-Vts is attributed to synergistic effects of the partition process and functional interaction, which are influenced by the steric hindrance and chain configuration of the modifier. A combined evaluation of adsorption tests and fitting calculations is employed to reveal the adsorption mechanism: (i) the incorporation of amides into the alkyl chain significantly enhances the utilization of the interlayer space in organo-Vts. (ii) Smaller steric hindrance and higher rigidity of the modifier spacer contribute to improved adsorption performance. The findings in this study rekindle interest in Vt-based adsorbents, which demonstrate comparable potential to other emerging adsorbents that are yet to be fully explored.

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Vermiculite modified with alkylammonium salts: characterization and sorption of ibuprofen and paracetamol

Cited by 7 publications

References 82 publications

Micelle–Micelle Cross-Linked Highly Stretchable Conductive Hydrogels for Potential Applications of Strain and Electronic Skin Sensors

Micelle–Micelle Cross-Linked Highly Stretchable Conductive Hydrogels for Potential Applications of Strain and Electronic Skin Sensors

Organobeidellites for Removal of Anti-Inflammatory Drugs from Aqueous Solutions

Reviving the Potential of Vermiculite-Based Adsorbents: Exceptional Ibuprofen Removal on Novel Amide-Containing Gemini Surfactants

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