ILSnCl2-mGO nanocomposite for efficient preconcentration of Red 2G via ultrasonic-assisted dispersive magnetic solid-phase extraction method: isotherm adsorption

The revolutionary development of green technology, such as ultrasound-assisted extraction, has had a significant impact on the extraction methods of natural compounds with pharmacological potential. These methods are considered green because they are environmentally friendly, minimizing the use of toxic solvents, energy consumption, and CO2 generation. Antimicrobial resistance is a global public health problem. Pathogens of dermatological and nosocomial relevance are more frequent because they are resistant to antimicrobials. Agave nuusaviorum leaves are used in traditional medicine to treat onychomycosis and inflammatory processes. Here, the antimicrobial activity of hydroethanolic extract of A. nuusaviorum leaves obtained by ultrasound-assisted extraction was evaluated. The antimicrobial activity was tested against 14 pathogens with dermatological and nosocomial relevance by the agar diffusion technique. The extract exhibited an antimicrobial effect on all microorganisms tested, showing inhibition zones of 9–16 mm for Staphylococcus aureus, Candida albicans, Candida parapsilosis, and eleven isolates of Trichophyton. The extract’s minimum inhibitory concentration ranged between 0.5 mg/mL for Staphylococcus aureus, 0.25–1 mg/mL for yeast, and 0.4–1.25 mg/mL for molds. The phytochemical screening revealed the presence of terpenes, phenolic acids, tannins, carbohydrates, and steroids in the extract. The results showed that A. nuusaviorum leaves have broad-spectrum antimicrobial potential.

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Application of Deep Eutectic Solvents (DES) for the Synthesis of Iron Heterogeneous Catalyst: Application to Sulfamethoxazole Degradation by Advanced Oxidation Processes

Puga

Rosales

Pazos

et al. 2023

Catalysts

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The development of novel approaches to the remotion of pharmaceuticals in wastewater is a subject of concern due to their effect on living beings and the environment. Advanced oxidation processes and the use of relevant catalysts are feasible treatment alternatives that require further development. The development of suitable heterogeneous catalysts is a necessity. This work proposes the synthesis of an iron catalyst in a deep eutectic solvent (Fe-DES) composed of choline chloride and citric acid, which was physically and chemically characterized using SEM-EDS and TEM, FTIR, RAMAN, XRD and XPS. The characterisation confirmed the presence of iron in the form of hematite. Fe-DES was shown to be a multipurpose catalyst that can be applied in the removal of sulfamethoxazole as a reagent in the Fenton and electro-Fenton processes and as an activator of peroxymonosulfate (PMS) processes. After testing the catalyst with the aforementioned techniques, the best result was achieved by combining these processes in an electro-PMS, with great efficiency achieved by dual activation of the PMS with the catalyst and electric field, attaining total elimination at natural pH in 90 min. Furthermore, the degradation was confirmed by the detection of short-chain carboxylic acids (oxalic, succinic, and acetic) and reduction in toxicity values. These results confirm the suitability of Fe-DES to degrade high-priority pharmaceutical compounds.

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ILSnCl2-mGO nanocomposite for efficient preconcentration of Red 2G via ultrasonic-assisted dispersive magnetic solid-phase extraction method: isotherm adsorption

Cited by 3 publications

References 64 publications

Effect of ionic liquid to highly selective removal of Cd2+ onto carbon nanotube: optimized by Plackett–Burman design method

Effect of ionic liquid to highly selective removal of Cd2+ onto carbon nanotube: optimized by Plackett–Burman design method

Ultrasound-Assisted Extraction of an Extract with Dermatological and Nosocomial Activity from Agave nuusaviorum, a Mexican Endemic Plant

Application of Deep Eutectic Solvents (DES) for the Synthesis of Iron Heterogeneous Catalyst: Application to Sulfamethoxazole Degradation by Advanced Oxidation Processes

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