MgO nanoparticles as an efficient and reusable catalyst for aza-Michael reaction

Tajbakhsh, Mahmood; Farhang, Maryam; Hosseini, Amirhossein

doi:10.1007/s13738-013-0338-x

Cited by 23 publications

(14 citation statements)

References 93 publications

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“…Increased removal rate at pH 6 was related to pH zpc and pK a . The level of pK a for CIP is 5.7 and the level of pH zpc nanoparticles of MgO is 12.4 (Kord Tajbakhsh et al, 2014). It was related to pH zpc and pK a .…”

Section: Effect Of Ph On the Mgo Adsorptionmentioning

confidence: 97%

“…The highly used adsorbing materials are the active granulated carbons, but they are very expensive and will be hardly revived (Liao et al, 2011;2017b). Nanoparticles are a suitable option because of their large surface in order to complete chemical reactions and adsorption of organic compounds (Tajbakhsh et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Magnesium oxide nanoparticles (MgO) are a basic oxides group and provided a large range of application in adsorption process (Tajbakhsh et al, 2014;Kermani, 2013). The important characteristics of MgO nanoparticles are availability, cheap, nonvolatile, non-toxic, stability, adsorption capacity and high reactivity (Kermani et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Kinetic and Isotherm Studies on Ciprofloxacin an Adsorption using Magnesium Oxide Nanopartices

2017

J App Pharm Sci

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The antibiotics along with the sewage, pharmaceutical industries water waste, veterinary clinics and hospital sewages and the agricultural products noticeably enter into the water resources and the environment. The objective of this study was to investigate ciprofloxacin removal efficiency from aqueous solutions by using Magnesium Oxide nanoparticles (MgO). The effects of pH, nanoparticles dose, contact time, initial antibiotic concentration were assessed on ciprofloxacin removal efficiency in laboratory. Under optimal conditions of concentration, the removal efficiency was 85%.and qm of the MgO nanoparticles was 3.46 mg/g. The process of ciprofloxacin adsorption on MgO nanoparticles was depended on Langmuir adsorption isotherm more than other isotherms. Batch kinetic experiments showed that the adsorption followed Pseudo second -order kinetic model with correlation coefficients greater than 0.978.

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Section: Effect Of Ph On the Mgo Adsorptionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Kinetic and Isotherm Studies on Ciprofloxacin an Adsorption using Magnesium Oxide Nanopartices

2017

J App Pharm Sci

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“…[46][47][48] However, the report on the use of metal oxide nanocatalyst for such reaction is very limited. 12,[49][50][51] The benet of using metal oxide NPs as catalyst such as high efficiency, enhanced surface to volume ratio, expected high atom economy, easy recovery and recyclability has prompted us to use the synthesized CuO NPs as catalyst for aza-Michael reaction.…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of CuO nanoparticles using Lantana camara flower extract and their potential catalytic activity towards the aza-Michael reaction

2020

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Aza-Michael addition is one of the most exploited reactions in organic chemistry. It is regarded as one of the most popular and efficient methods for the creation of the carbon-nitrogen bond, which is a key feature of many bioactive molecules. Herein, we report the synthesis of CuO nanoparticles by an alkaline hydrolysis process in the presence of the flower extract of Lantana camara, an invasive weed, followed by calcination in air at 400 C. Microscopic results indicated that the plant extract played an important role in the modulation of the size and shape of the product. In the presence of extract, porous CuO nanostructures are formed. While mostly aggregated rod-shaped CuO nanostructures are formed in the absence of extract. The products are pure and highly crystalline possessing the monoclinic phase. The CuO nanoparticles have been used as a catalyst in the aza-Michael addition reaction in aqueous medium under ultrasound vibration. The product yield is excellent and the catalyst is reusable up to the fifth cycle. The catalyst system can be extended to various substituted substrates with excellent to moderate yields.

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“…In contrast, adsorption process that is controlled by main physicochemical interactions, such as van der Waals forces, hydrogen bonds, polarity, and dipole-dipole interaction, is one of the most cost-effective methods for water treatment (Ren et al 2011;Rahdar et al 2019a, b). Particularly, the development of various nano-adsorbents, which offer unique advantages including large specific surface area, selective and abundant adsorption sites, short intraparticle diffusion distance, tunable pore size, and easy regeneration and reusability, has attracted a great deal of attentions (Tajbakhsh et al 2014;Al-Nour 2009). Among the nanoparticles, magnesium oxide (MgO) is a basic oxide group and it has provided a large range of applications in the process of adsorption (Ghahramani et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Error analysis of adsorption isotherm models for penicillin G onto magnesium oxide nanoparticles

Rahdar

Khodadadi

et al. 2019

Appl Water Sci

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The adsorption of penicillin G (PC-G) from aqueous solution by magnesium oxide (MgO) nanoparticles has been investigated. This experimental study was conducted in a laboratory scale. The effects of various operating parameters such as pH (3-11), the dosage of MgO nanoparticles (0.3-1.5 g/L), contact time (20-150 min), and concentration of PC-G (50-200 mg/L) were studied. The results showed that under optimal conditions of concentration of 50 mg/L, pH 3, MgO nanoparticles dosage of 1.5 g/L and contact time of 60 min, the maximum adsorption capacity (q m ) of PC-G adsorption on MgO nanoparticles obtained was 25.66 mg/g. The process of penicillin G adsorption on MgO nanoparticles was found to depend on Langmuir (II) and Langmuir (III) adsorption isotherm models. It could be concluded that the MgO nanoparticles can be used for PC-G removal from its aqueous solution.

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MgO nanoparticles as an efficient and reusable catalyst for aza-Michael reaction

Cited by 23 publications

References 93 publications

Kinetic and Isotherm Studies on Ciprofloxacin an Adsorption using Magnesium Oxide Nanopartices

Kinetic and Isotherm Studies on Ciprofloxacin an Adsorption using Magnesium Oxide Nanopartices

Green synthesis of CuO nanoparticles using Lantana camara flower extract and their potential catalytic activity towards the aza-Michael reaction

Error analysis of adsorption isotherm models for penicillin G onto magnesium oxide nanoparticles

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