scholarly journals New Polymer Inclusion Membrane Containing β-Cyclodextrin Polymer: Application for Pharmaceutical Pollutant Removal from Waste Water

2019 ◽  
Vol 16 (3) ◽  
pp. 414 ◽  
Author(s):  
Lamia Moulahcene ◽  
Mohamed Skiba ◽  
Frederic Bounoure ◽  
Mohamed Benamor ◽  
Nicolas Milon ◽  
...  
Keyword(s):  
Pollutant Removal ◽  
High Yield ◽  
Guest Molecules ◽  
Cyclodextrin Polymer ◽  
Drug Extraction ◽  
Base Polymer ◽  
Ft Ir ◽  
Non Covalent Interactions ◽  
Favorable Influence ◽  
Polymer Application

We present herein the preparation of novel polymer inclusion membranes (PIMs) containing insoluble β-CD polymer as a carrier, polyvinyl chloride as a base polymer, and dibuthylphtalate (DBP) as a plasticizer in varying proportions. The prepared PIMs can be obtained by a simple, fast, and high-yield preparation process. Physicochemical characterizations of such membranes occurred in a homogeneous structure. In addition, Fourier-transform infrared Spectroscopy (FT-IR) analysis found that DBP was inserted between these polymeric chains by non-covalent interactions. This led to a spacing of PVC/poly(β-cyclodextrin) chains inducing a better access of guest molecules to PIM cyclodextrins. To achieve the elimination of ibuprofen and progesterone, two examples of emerging environmental contaminants that can lead to possible alterations to aquatic environments and affect human health, the effect of three operating parameters was studied (pH, the proportion of β-cyclodextrin polymer, and wastewater agitation). The proportion of β-cyclodextrin polymer and wastewater agitation had a favorable influence on drug extraction at 10 ppm. The PIMs containing β-cyclodextrin polymer was unstable in basic conditions and was more effective at acidic pH. These initial results demonstrate the high potential for drug extraction of this polymer.

scholarly journals An accelerated and effective synthesis of zinc borate from zinc sulfate using sonochemistry

2020 ◽  
Vol 43 (1) ◽  
pp. 7-14
Author(s):  
Ali Can Ersan ◽  
Azmi Seyhun Kipcak ◽  
Meral Yildirim Ozen ◽  
Nurcan Tugrul
Keyword(s):  
Inorganic Compounds ◽  
Zinc Borate ◽  
High Yield ◽  
X Ray Diffraction ◽  
Ultrasonic Probe ◽  
Minimum Particle Size ◽  
Effective Synthesis ◽  
Ft Ir ◽  
Lower Temperature ◽  
Borate Compound

AbstractRecently, sonochemistry has been used for the synthesis of inorganic compounds, such as zinc borates. In this study using zinc sulphate heptahydrate (ZnSO4·7H2O) and boric acid (H3BO3) as starting materials, a zinc borate compound in the form of Zn3B6O12·3.5H2O was synthesized using an ultrasonic probe. Product’s characterization was carried out with using X-ray diffraction (XRD), Scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FT-IR) and Raman spectroscopy. Zinc borate compound’s chemical bond structure was observed with Raman and FTIR. From the XRD results it was seen that Zn3B6O12·3.5H2O can be quickly synthesized upon heating at 80°C and 85°C (55 min) or 90°C (45 min) in very high yield (>90%). The minimum particle size obtained was ~143 μm from the SEM results. Zinc borate compound was synthesized at a lower temperature in less time than other synthesized zinc metal compound in literature.

Self-assembly mode and supramolecular framework of cyclopentanocucurbit[6]uril and aromatic amines

2021 ◽  
Vol 25 ◽  
Author(s):  
Jun Zheng ◽  
Yan Mei Jin ◽  
Xi Nan Yang ◽  
Lin Zhang ◽  
Dao Fa Jiang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Functional Materials ◽  
Supramolecular Interactions ◽  
X Ray Diffraction ◽  
Guest Molecules ◽  
Characterization Methods ◽  
Potential Applications ◽  
Non Covalent Interactions ◽  
Multi Level ◽  
Covalent Interactions

: Single-crystal X-ray diffraction analysis, nuclear magnetic resonance (NMR), and other characterization methods are used to characterize the complexes formed by cyclopentano-cucurbit[6]uril (abbreviated as CyP6Q[6]) as a host interacting with p-aminobenzenesulfonamide (G1), 4,4'-diaminobiphenyl (G2), and (E)-4,4'-diamino-1,2-diphenylethene (G3) as guests, respectively. The experimental results show that these three aromatic amine molecules have the same interaction mode with CyP6Q[6], interacting with its negatively electric potential portals. The supramolecular interactions include non-covalent interactions of hydrogen bonding and ion-dipole between host and guest molecules. CdCl2 acts as a structureinducing agent to form self-assemblies of multi-dimensional and multi-level supramolecular frameworks that may have potential applications in various functional materials.

scholarly journals Impact of non-covalent interactions on FT-IR spectrum and properties of 4-methylbenzylammonium nitrate. A DFT and Molecular docking study

Heliyon ◽  
2021 ◽  
pp. e08204
Author(s):  
Mouna Medimagh ◽  
Noureddine Issaoui ◽  
Sofian Gatfaoui ◽  
Silvia Antonia Brandán ◽  
Omar Al-Dossary ◽  
...  
Keyword(s):  
Molecular Docking ◽  
Ir Spectrum ◽  
Docking Study ◽  
Molecular Docking Study ◽  
Ft Ir ◽  
Non Covalent Interactions ◽  
Covalent Interactions

scholarly journals Catalytic condensation of phenol with formaldehyde into BPF on recyclable anchoring sulfuric acid

2020 ◽  
Vol 213 ◽  
pp. 01003
Author(s):  
Hui Li ◽  
Xi Cao ◽  
Huiting He ◽  
Jian Liu ◽  
Weijian Xiang ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Catalytic Performance ◽  
Significant Loss ◽  
High Yield ◽  
Element Analysis ◽  
Simple Filtration ◽  
Ft Ir ◽  
The Mind

A novel solid-acid catalyst (PVC-EDA-SO4H) based on polyvinyl chloride (PVC) were prepared after amination of Ethylenediamine (EDA) and anchorage of sulfuric acid. The as-prepared catalyst was characterized by FT-IR, Element analysis, Chemical titration and Thermal analysis, the results indicated that the sulfuric acid was successfully anchored on PVC. The PVC-EDA-SO4H showed excellent catalytic performance for the synthesis of bisphenol F, and achieved almost high yield and selectivity (94%) of BPF under the mind reaction conditions. Meanwhile, exhibited excellent reusability without the significant loss after six cycles via simple filtration.

scholarly journals Biopolymer Extracted from Anadenanthera colubrina (Red Angico Gum) Exerts Therapeutic Potential in Mice: Antidiarrheal Activity and Safety Assessment

2020 ◽  
Vol 13 (1) ◽  
pp. 17 ◽  
Author(s):  
Thiago S. L. Araújo ◽  
Taiane M. de Oliveira ◽  
Nayara A. de Sousa ◽  
Luan K.M. Souza ◽  
Francisca B. M. Sousa ◽  
...  
Keyword(s):  
Therapeutic Potential ◽  
Gastrointestinal Transit ◽  
High Yield ◽  
Enzyme Linked Immunosorbent Assay ◽  
E Coli ◽  
Ft Ir ◽  
Antidiarrheal Activity ◽  
Pre Treatment ◽  
Smooth Muscle Contractions

Anadenanthera colubrina var. cebil (Griseb.) Altschul (Fabaceae family), commonly known as the red angico tree, is a medicinal plant found throughout Brazil’s semi-arid area. In this study, a chemical analysis was performed to investigate the antidiarrheal activity and safety profile of red angico gum (RAG), a biopolymer extracted from the trunk exudate of A. colubrina. Upon FT-IR spectroscopy, RAG showed bands in the regions of 1608 cm−1, 1368 cm−1, and 1029 cm−1, which relate to the vibration of O–H water molecules, deformation vibration of C-O bands, and vibration of the polysaccharide C-O band, respectively, all of which are relevant to glycosidic bonds. The peak molar mass of RAG was 1.89 × 105 g/mol, with the zeta potential indicating electronegativity. RAG demonstrated high yield and solubility with a low degree of impurity. Pre-treatment with RAG reduced the total diarrheal stool and enteropooling. RAG also enhanced Na+/K+-ATPase activity and reduced gastrointestinal transit, and thereby inhibited intestinal smooth muscle contractions. Enzyme-Linked Immunosorbent Assay (ELISA) demonstrated that RAG can interact with GM1 receptors and can also reduce E. coli-induced diarrhea in vivo. Moreover, RAG did not induce any signs of toxicity in mice. These results suggest that RAG is a possible candidate for the treatment of diarrheal diseases.

scholarly journals Synthesis and Identification of Some Imino Chalcone Derivatives with Evaluating their Anti-oxidant Activity

2021 ◽  
pp. 1-16
Author(s):  
Hala Shkyair Lihumis ◽  
Saadon Abdulla Aowda
Keyword(s):  
Antioxidant Activity ◽  
1H Nmr Spectroscopy ◽  
High Yield ◽  
Chalcone Derivatives ◽  
Radical Method ◽  
Anti Oxidant ◽  
Aryl Aldehyde ◽  
Ft Ir ◽  
The Common ◽  
Layer Chromatography

This work involves the preparation of high yield iminochalcon compounds (B1-B15)  through two parts. The first part involves the preparation of 2,4-dihydroxy Chalcone (A1-A15) by the condensation of 2,4-dihydroxy acetophenone  with  aryl aldehyde in the presence of sodium hydroxide (40%) as a catalyst. The second part includes the preparation of  iminochalcon from the condensation of p-hydroxy aniline with 2,4-dihydroxy chalcone  derivatives  )A1-A15)  in the presence of some drops of conc. H2SO4. Thin-layer chromatography ((TLC)  was used to control the chemical reaction . These new derivatives were characterized by using FT-IR and  1H-NMR spectroscopy. These synthesized compounds were also assessed by the DPPH (2,2-diphenyl-1-picryl-hydrazyl-hydrate) free radical method, through which the compounds (B1-B15) were evaluated for their antioxidant activity. The compound B3 was found to have the strongest antioxidant activity  (IC50= 23.91 μg/mL) as compared to that of the common standard of ascorbic acid (IC50=31.95 μg/mL).

scholarly journals Synthesis of pyrroles catalyzed by MIL-53(Al) via Paal-Knorr reaction under mild condition

2018 ◽  
Vol 1 (T5) ◽  
pp. 116-125
Author(s):  
Hai Truong Nguyen ◽  
Phuong Hoang Tran
Keyword(s):  
Catalytic Activity ◽  
Metal Organic Framework ◽  
Organic Ligand ◽  
Molar Ratio ◽  
High Yield ◽  
X Ray Diffraction ◽  
Benzenedicarboxylic Acid ◽  
Metal Organic ◽  
Ft Ir ◽  
Good Catalytic Activity

Metal-organic framework MIL-53(Al) was synthesized by a solvothermal method using aluminium nitrate as the aluminium source and 1,4- benzenedicarboxylic acid (H2BDC) as the organic ligand. The structure of MIL-53(Al) was characterized by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). The catalytic activity and recyclability of MIL-53(Al) catalyst were evaluated based on the Paal-Knorr reaction between aniline and acetonylacetone. The reaction conditions were optimized and the results showed that the MIL-53(Al) catalyst exhibited good catalytic activity and recyclability based on the PaalKnorr reaction. With the molar ratio of MIL-53(Al) catalyst of 10 mol %, the molar ratio of aniline and acetonylacetone of 1:1.2, and without solvents, the conversion of aniline could reach 100 % and the selectivity of 2,5-dimethyl-1-phenyl-1H-pyrrole has high yield (95-100 %) after 2 hours by ultrasound activation. The MIL-53(Al) catalyst can be reused five times without significant degradation in the catalytic activity.

scholarly journals Novel Methodology for the Isolation of Pure Piperine from Plant Source through Sonication

2017 ◽  
Vol 1 (1) ◽  
Keyword(s):  
Propionic Acid ◽  
Black Pepper ◽  
High Yield ◽  
Piper Nigrum ◽  
Insoluble Residue ◽  
Alcoholic Extract ◽  
Isolation And Purification ◽  
Black And White ◽  
Ft Ir ◽  
Novel Method

Piperine was discovered in 1819 by Hans Christian, who isolated it from the fruits of Piper nigrum, the source plant of both the black and white pepper grains [1]. Fluckiger and Hanbury found piperine in Piper longum and Piper officinarum Piperine, along with its isomer chavicine, is the alkaloid[1b] responsible for the pungency of black pepper and long pepper [2]. Piperine is extracted from black pepper using dichloromethane [3]. Aqueous hydrotropes can be used in the extraction to result in high yield and selectivity [4]. The amount of piperine varies from 1-2% in long pepper, to 5-10% in commercial white and black peppers [5]. Further, it may be prepared by treating the solvent-free residue from an alcoholic extract of black pepper, with a solution of potassium hydroxide to remove resin (said to contain chavicine, an isomer of piperine) and solution of the washed, insoluble residue in warm alcohol, from which the alkaloid crystallises on cooling [6]. It has been used in some forms of traditional medicine. Piperine, a major alkaloid in black pepper is one of the most gifted bioenhancers till date. Additional methods used for its isolation suffer disadvantages such as poor extraction efficiency, tedious and pricey isolation methodology, piperine photode gradation, etc. Hence a simple, rapid and well-organized method has been developed for the extraction of piperine from the fruits of Piper nigrum. The methods under study involve extraction of piperine with various solvents such as ethanol, propionic acid and dichloromethane. Then isolation and purification were followed by separate classical methods for respective extracts. Compared to other two methods, the novel method using propionic acid proved to be valuable in isolating piperine with higher yield and in higher purity. Hence extract derived using propionic acid was further subjected to alkali wash and passing out through small silicagel bed. Then identification of the compound was confirmed by various analytical methods TLC, melting point, UV-visible spectrophotometer, FT-IR, HPLC and compared it with authentic piperine which resulted into better pure piperine crystals as that of authentic piperine.

scholarly journals Synthesis of Thiophenyl Thiazole Based Novel Quinoxaline Derivatives

2015 ◽  
Vol 51 ◽  
pp. 115-124
Author(s):  
Haresh G. Kathrotiya ◽  
Yogesh T. Naliapara
Keyword(s):  
Aromatic Amine ◽  
Elemental Analysis ◽  
Condensation Reaction ◽  
High Yield ◽  
Experimental Procedure ◽  
H Nmr ◽  
Quinoxaline Derivatives ◽  
Ft Ir ◽  
C Nmr

A new series of thiophenyl thiazole based novel quinoxaline derivatives 4a-4t have been synthesized by base catalysed condensation reaction. In which 6-substituted 2,3-dichloroquinoxaline 1a and 4-(thiophen-2-yl) thiazol-2-amine 2b reacted in basic condition to afford intermediate 3c which reacts with various aromatic amine to form final compounds. Easy experimental procedure, high yield, and selectivity are the imperative features of this method. The identity of all the compounds has been established by 1H NMR, 13C NMR, FT-IR, and elemental analysis.

scholarly journals Development of a mathematical model for alkylation of m-cresol with α-methylstyrene using anhydrous aluminium chloride

2019 ◽  
Vol 54 (3) ◽  
pp. 195-202
Author(s):  
S Sultana ◽  
ASMS Arefin ◽  
M Shahruzzaman
Keyword(s):  
Mathematical Model ◽  
Polymeric Materials ◽  
Aluminium Chloride ◽  
Molar Ratio ◽  
High Yield ◽  
Practical Utilization ◽  
Anhydrous Aluminium Chloride ◽  
Chloride Catalyst ◽  
Ft Ir ◽  
Burman Design

Alkylaromatic compounds such as alkylphenols are the most wide spread and efficient material due to its broad practical utilization in different arenas including antioxidants, stabilizers for fuels, lubricating oils, polymeric materials and so on. In this work, (2-phenylpropan-2-yl) m-cresol with high yield was prepared from the reaction between m-cresol and _-methylstyrene in the presence of anhydrous aluminium chloride catalyst. Plackett-Burman design was applied for screening significant variables, such as, temperature, molar ratio of m-cresol to _-methylstyrene, time of reaction and amount of catalyst etc. to determine an optimum condition for the production of (2-phenylpropan-2-yl) m-cresol. Moreover, a 23 Yates pattern factorial design was used to develop a mathematical model to predict the yield of alkylation of m-cresol with _-methylstyrene. Analyses of the results revealed that temperature, molar ratio and amount of catalyst were the main effective variables. The products were characterized by FT-IR, UV-visible and 1H NMR spectroscopy. The adequacy of the suggested model was checked up. The experimental yields exhibited good agreement with the predicted yields designed by the mathematical model. Hence, (2-phenylpropan-2-yl) m-cresol has the potential to be used as an industrially important compound in various applications. Bangladesh J. Sci. Ind. Res.54(3), 195-202, 2019

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