In this study, we synthesized 3-chloroammoniumpropyl polyhedral oligomeric silsesquioxanes (CAP-POSS) by acid hydrolysis and condensation. Partial ion exchange resulted in the formation of supramolecular structures through electrostatic interactions. The interactions between POSS macroions were ...

Capacitive deionization (CDI) is a rising technology as a low-energy-consumption and low-cost option for water purifications and treatments; however, selective removal of heavy metal ions has been rarely reported. In this study, the impacts of ion-exchange membranes on the selective removal of l...

The goal of this research was to develop a new process for simultaneously removing organics and heavy metals of electroplating wastewater by in-situ ion exchange electrocatalysis biological coupling (i-IEEBC). The study evaluated the removal efficiency of coexisting refractory organics and heavy...

This review is a broad survey of ion exchange membranes (IEMs) in chosen areas of analytical chemistry. The coverage is comprehensive in ion chromatography (IC) applications, this includes in-line water purification for IC use, chemical and electrodialytic eluent suppression, eluent generation, ...

Quantitative failure of the ideal Donnan model to predict ion partitioning between relatively dilute electrolyte aqueous solutions and ion exchange polymers arises from neglecting non-ideal behavior of ions. Hypothetically, when a water swollen, charged polymer is equilibrated with concentrated ...

We explored the mechanisms governing the selectivity of anion- and cation-exchange membranes for the transport of four monovalent anions (i.e., fluoride, chloride, bromide, and nitrate) and four monovalent cations (i.e., sodium, potassium, cesium, and ammonium), respectively. Our ion adsorption ...

In this research, the molecular dynamics simulation of separating metal ions from water at 298 K using LAMMPS software for LTA, FAU, LTN, THO, NAT and EDI zeolites and electrolyte solutions containing Cu2+, Cd2+ and Pb2+ individually and in pairs of ions have been studied. Among the single ions,...

An association equilibrium model is presented in this work to illustrate the charged state of an ion-exchange adsorbent in electrolytic solution. This semi-empirical model considers the adsorption equilibrium of hydrogen ions and small-molecular salt ions with adsorbents, and it can be used to d...

The abnormal activation of PI3K signaling pathway leads to the occurrence of various cancers. The PI3Kα is frequently mutated and overexpressed in many human cancers. Therefore, the PI3Kα was considered as a promising target in therapeutic treatment of cancer. In this study, two series of comp...

Dioxovanadium(V) complexes having the general formula [VO2(phsalR)] have been synthesized in 52–63% yields by reacting one mole equivalent each of VOSO4 · 5H2O, 4-R-2-(pyridin-2-yl-hydrazonomethyl)-phenols (HphsalR, where R = H, OCH3, Cl, Br and NO2) and N(C2H5)3 in water–acetonitrile (1:1.3)...

The complexive ability of p-sulphonato-calix[4]arene towards dioxovanadium(V) and dioxouranium(VI) has been evaluated in acidic aqueous solution (pH 2) using UV–Vis spectrophotometric technique. The results showed that the ligand is capable to complex with the oxo-cations by 1:1 cation to ligan...

The present study deals with the complexation of dioxovanadium(V) with glycylglycine by a combination of potentiometric and spectrophotometric techniques in aqueous solution at 25 °C and 0.1 mol dm− 3 ionic strength (NaClO4). The stability constants of the complexes formed and their stoichiomet...

A mononuclear dioxovanadium(V) Schiff base complex, [VO2(L)] {HL = 2-((diethylamino)ethyliminomethyl)-4-bromophenol} has been synthesized and characterized. The importance of noncovalent interactions in the solid state of the complex has been studied by means of DFT and MEP calculations and char...

A series of lipophilic diaromatic derivatives of the glia-selective GABA uptake inhibitor (R)-4-amino-4,5,6,7-tetrahydrobenzo[d]isoxazol-3-ol [(R)-exo-THPO, 4] were synthesized via reductive amination of 3-ethoxy-4,5,6,7-tetrahydrobenzo[d]isoxazol-4-one (9) or via N-alkylation of O-alkylatedrace...

A new HILIC method has been developed for the simultaneous determination of pseudoephedrine hydrochloride (PSH), diphenhydramine hydrochloride (DPH) and dextromethorphan hydrobromide (DXH) in cough-cold syrup. Mobile phase consists of methanol:water (containing 6.0 g of ammonium acetate and 10 m...

Enantiomerically pure 4,5-disubstituted 3-methyltetrahydro-1,3-oxazines have been obtained by reaction of 3-methylamino-1,2-diols with dichloromethane by regioselective differentiation of hydroxyl groups.

Reliable data on polyphenol in teff, an increasingly important food crop, is currently lacking. This study investigated the structural and quantitative profile of soluble and bound polyphenols in white and brown teff grown in Ethiopia and USA using LC-tandem quadrupole mass spectrometry. Thirty-...

A novel method for producing germinated brown rice (GBR) was developed by cyclic cellulase conditioning and germination treatment. Changes in the γ-aminobutyric acid (GABA) content and the cooking and taste qualities of GBR were analysed. The results indicated GABA accumulation reached its high...

The -CHF2 moiety has shown a growing interest in pharmaceutical and agrochemical applications over the last few years. Its introduction is therefore a current research topic for organic chemists. Several groups have reported the synthesis of difluoromethylated compounds. However, the more challe...

Synthetic metalloporphyrins are catalysts that can efficiently insert oxygen and other atoms such as nitrogen and sulfur in hydrocarbons and in a wide variety of other organic compounds. This work reports on a synthetic strategy to prepare new metalloporphyrins via structural modification of [5,...