Physical and photo-electrochemical study of β′-Mn3(PO4)2 and its application to photodegradation of methyl violet under visible irradiation

Journal of Solid State Electrochemistry - In the present work, we investigate the photo-electrochemical properties of β′-Mn3(PO4)2 prepared by hydrothermal route at 453 K for...     

SYNTHESIS AND CRYSTAL STRUCTURES OF IONIC CLUSTER COMPLEXES [Cu2(en)2(μ-CN)][{Cu(en)}3Re6Q8(CN)6]·en·H2O (Q = S,Se)

Journal of Structural Chemistry - Two new compounds of the composition [Cu2(en)2(μ-CN)][{Cu(en)}3Re6Q8(CN)6]·en·H2O (Q = S, Se) are synthesized under solvothermal...     

Comparative determination of uranium in rock phosphates and columbite by ICP-OES,alpha &; gamma spectrometry

During this work selective separation of uranium from rock phosphate and columbite mineral was done before its quantitative estimation by using Inductively Coupled Plasma Optical Emission Spectrometery (ICP-OES). Uranium from the rock phosphate and columubite was extracted by sodium peroxide fusion followed by leaching in 2 M HNO₃. To avoid spectral interference in the estimation of uranium by ICP-OES, the selective separation of uranium from the leachate was carried out by using two different extractants, 30% Tributyl Phophates (TBP) in CCl₄ and a equi-volume mixture of Di(2-ethylhexyl) phosphoric acid (D2EHPA) & TBP in petrofin. Uranium was stripped from the organic phase by using 1 M ammonium carbonate solution. Determination of uranium by ICP-OES was done after dissolving the residue left after evaporation of ammonium carbonate solution in 4% HNO₃. The concentration of the uranium observed in the rock phosphates samples was 40–200 μg g⁻¹ whereas in columbite samples the concentration range was 100–600 μg g⁻¹. Uranium concentration evaluated by ICP-OES was complimented by gamma & alpha spectrometry. Concentration of uranium evaluated by gamma spectrometry in case of rock phosphate and coulmbite was in close agreement with the uranium content obtained by ICP-OES. Uranium determination by alpha spectrometry showed only minor deviation (1–2%) from the results obtained by ICP-OES in case of rock phosphates whereas in case of coulmbites results are off by 20–30%.     

Studies on electrochemical dissolution of sintered molybdenum discs as a potential method for targets dissolution in 99mTc production

Journal of Radioanalytical and Nuclear Chemistry - Electrochemical dissolution of pressed into discs and sintered metallic molybdenum powder with the mass of 712 ± 10 mg...     

Zinc and aluminium: glutamic acid assisted dual-doped LiMn2O4 spinels via sol–gel method as cathode material for use in lithium rechargeable batteries

Journal of Sol-Gel Science and Technology - LiMn2O4 and LiZnxAlyMn2-x-yO4 (x = 0.07–0.10; y = 0.15–0.18) powders have been synthesized by...     

Thermokinetic study on the phase evolution of mechanically alloyed Ni–B powders

A combination of differential thermal analysis and detailed X-ray diffraction (XRD) analyses were used for the thermokinetic study of phase evolution during heating–cooling of the mechanically alloyed (MA-ed) Ni–15 wt% B. According to the results obtained, different phase transition sequences led to the formation of nanocrystalline Ni–B alloys comprising of Ni₂B + o-Ni₄B₃ and Ni₂B + m-Ni₄B₃ + B. Using the XRD studies, it was found that the Ni₂B is the most stable intermetallic compound in the Ni–B binary phase diagram, and its nanocrystalline nature retained unchanged even after annealing up to temperatures near the melting point. In addition, average enthalpy as well as activation energy of occurred reactions was calculated; the latter was estimated using two well-known Kissinger and Augis & Bennett methods.     

Ab Initio Chemical Kinetics for the Thermal Decomposition of SiH4 + Ion and Related Reverse Ion–Molecule Reactions of Interest to PECVD of a-Si:H Films

Plasma Chemistry and Plasma Processing - The thermal unimolecular decomposition of SiH4 + ion and its related reverse reactions, SiH3 + + H and SiH2 + + H2, have...     

Effect of moisture content on the 222Rn mass exhalation rates for different grain-size samples of red brick and cement mortar used in Qena city,Egypt

Journal of Radioanalytical and Nuclear Chemistry - Four different grain size fractions (0.2–0.5, 0.5–1, 1–1.8, 1.8–2 mm) of red brick and cement mortar samples at...     

Correction to: Ethylethanolammonium 4-nitrobenzoate

Journal of Thermal Analysis and Calorimetry - The temperature dependence of molar heat capacity of Ba1.5Fe2(PO4)3 phosphate was investigated between T = 6 and 670 K with...     

IMMUNIOMODULATIONG EFFECTS OF THE FUCOIDAN—GALACTOSAN SULFATE（F12） ON MACROPHAGES IN MICE

The immunomodulating effects of F12 on mouse peritoneal macroplhages was intended to be studied with different doses of 20,40,80,and 120mg/Kg.F12 increased peroxidase activity in dexc dependent mammer from 0.02±0.001,to 0.175±0.038,0.211±0.041,0.137±0.045and 0.078±0.036,respectively,increased cytotoxicity from 127.33±22.96 to 162.74±19.53,237.30±25.15,178.62±36.22and 158.66±42.75dpm,respectively,promoted phagocytic activity from 0.03±0.01 to 0.21±0.016,0.43±0.041,0.40±0.032 and 0.30±0.160^b,Furthermore,F12 in a concentration of 15,30,60,120ug/ml enhanced IL-1 production from 0.15±0.02 to 0.20±0.005^b 0.21±0.02,0.22±0.005,0.24±0.002and 0.22±0.02,respectively,Thus F12 can be considered as an effective stimulator of macrophages.     

PROPIOLATE CLUSTER COMPLEXES (Bu4N)2[Mo6X8(OOC–C≡CH)6] (X = Br,I)

Journal of Structural Chemistry - Two new cluster complexes (Bu4N)2[Mo6X8(OOC–C≡CH)6] (1) (X = Br) and (2) (X = I) are synthesized by the reaction of...     

EFFECT OF POLYMORPHISM ON THE LUMINESCENT PROPERTIES ON SILVER(I) NITRATE COMPLEXES WITH 2-AMINO-5-PHENYLPYRAZINE

Journal of Structural Chemistry - The reaction between AgNO3 and 2-amino-5-phenylpyrazine (L) at a molar ratio Ag:L = 1.5:1 (synthesis time 3-4 h) in the acetonitrile...     

Luminescence,Energy Transfer and Thermal Quenching Properties of Li2Eu4(MoO4)7 : Bi3+ Phosphors

Russian Journal of Physical Chemistry A - A series of Li2Eu4(MoO4)7 : Bi3+ red phosphors were prepared by a sol–gel method. The crystal structures, photoluminescence...     

Simultaneous Determination of Carvedilol,Enalaprilat, and Perindoprilat in Human Plasma Using LC–MS/MS and Its Application to a Pharmacokinetic Pilot Study

Chromatographia - A method for the extraction and quantification of carvedilol, enalaprilat, and perindoprilat in 50 µL human plasma, using high-performance liquid chromatography with...     

SYNTHESIS,CRYSTAL STRUCTURE AND ELECTROCHEMISTRY PROPERTIES OF Cu-COMPOUND BY RIGID LIGAND

Journal of Structural Chemistry - A new novel Cu(II) compound formulated as Cu(C4N6H4)2Cl2 (1) (C4N6H4 = 1H-3,4′-bi-1,2,4-triazole) is successfully synthesized by a...     

New quaternized poly(4-vinylpyridine-co-divinylbenzene) material containing nickel(II) Schiff base complex: synthesis,thermogravimetry, and application for heterogeneous electrooxidation of ethanol

Research on Chemical Intermediates - Poly(4-vinylpyridine) crosslinked by 2 % divinylbenzene was partially quaternized (20 % monomer equivalents) by a bidentate Schiff base nickel...     

Biodegradable antifreeze foam stabilized by lauryl alcohol for radioactive surface decontamination

Journal of Radioanalytical and Nuclear Chemistry - Conventional water-based detergents cannot remove radioactive contamination on the surface below 0 °C. In order to solve this...     

Effects of ultrasonic field on structure evolution of Ni film electrodeposited by bubble template method for hydrogen evolution electrocatalysis

Journal of Solid State Electrochemistry - Self-supporting porous Ni film with uniform honeycomb-like micropores and a thickness of up to 66 μm is electrodeposited by dynamic hydrogen...     

Fabrication of chitosan composite nanofibers for the recovery of precious palladium cations from aqueous solution

Cellulose - In this paper, chitosan composite nanofibers with mean diameters of 300–500 nm have been prepared by electrospinning with poly(methacrylic acid) as the crosslinking agent...     

(Mg,Ni)Ga2O4 Solid Solution with a Spinel Structure

Doklady Chemistry - The boundaries of Mg1 – xNixGa2O4 solid solutions (0 ≤ х ≤ 0.5) with a spinel structure synthesized by the gel combustion method,...