Electrochemical detection of metal cations at paper-based sensors has been suggested as an attractive alternative to current spectroscopic and chromatographic techniques due the ease fabrication, disposable nature, low cost. Herein, a novel carbon black (CB), dimethylglyoxime (DMG) ink is designed electrode modifier in conjunction with 3-electrode inkjet-printed paper substrates for use adsorpt...

The aim of this paper is the development a sensor for quantification nickel ions in food raw materials and foods. It believed that about 15% human population suffers from allergy. In addition to digestive manifestations, intolerance may also have systemic such as diffuse dermatitis, itching, fever, rhinitis, headache, altered general condition. Therefore, it necessary control content health by ...

Stripping voltammetry as technique has proved to be very useful in the analysis of heavy and other metal ions due to its excellent detection limits and its sensitivity in the presence of different metal species or interfering ions. Recent assessments of aquatic samples have shown increased levels of platinum group metals (PGMs) in aquatic ecosystems, caused by automobile exhaust emissions and m...

The oxidation of hydrocarbons different structures under the same conditions is an important stage in study chemical properties both themselves and catalysts. In a 50% H2O2/Cu2Cl4·2DMG/CH3CN system, where DMG dimethylglyoxime (Butane-2,3-dione dioxime), at 50 °C or similar conditions, we oxidized eleven RH structures: mono-, bi- tri-cyclic, framework aromatic. To compare composition products th...

Tertiary tetraols of adamantane (C10H16, Tricyclo[3.3.1.1(3,7)]decan) have been widely used for the synthesis highly symmetric compounds with unique physical and chemical properties. The methods one-stage simultaneously selective, deep, cheap oxidation to different structures not yet developed. In this research, chemically simple, cheap, environmentally friendly reagents are that is first step ...

A first step towards the fabrication and electrochemical evaluation of thin-film microsensors based on organic PVC membranes for the determination of Hg(II), Cd(II), Pb(II) and Cu(II) ions in solutions has been realised. The membrane-coating mixture used in the preparation of this new type of microsensors is incorporating PVC as supporting matrix, o-nitrophenyloctylether (o-NPOE) as solvent med...

In present work, we demonstrate a simple but effective strategy for high-performance supercapacitors by adding the p-nitroaniline (PNA) into an alkaline electrolyte of KOH. PNA possesses a unique molecular structure with the functional groups of -NH2 and -NO2. Besides, both the product of nitro-reduction (-NH2) and intrinsic -NH2 on the benzene ring can lead to the occurrence of Faradaic redox ...

The ground-state spin arrangement and the bipartite entanglement within Cu2+-Cu2+ dimers across magnetization process of 4f-3d heterometallic coordination polymer [Dy(hfac)2(CH3OH)2Cu(dmg)(Hdmg)2]n (H2dmg = dimethylglyoxime, Hhfac 1,1,1,5,5,5-hexafluoropentane-2,4-dione) are theoretically examined using symmetric isotropic spin-1/2 Ising–Heisenberg orthogonal-dimer chain. numerical results poin...