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Fabricating nano-sized BiVO4/InVO4/g-C3N4 photocatalysts for efficient degradation of Acid Blue 92 azo dye

Posted on 31. August, 2018.

Photocatalysis using semiconductors has received considerable interest in both the scientific and engineering areas. Especially, metal oxide semiconductor photocatalysts have been widely studied for environmental applications such as cleaning of air and the removal of hazardous compounds from wastewater. 

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Investigation of reaction mechanisms and kinetics of the radical scavenging ability of 5-tert-butylbenzene-1,2,3-triol and 3,5-di-tert-butylbenzene-1,2-diol compounds towards OOH radical

Posted on 26. July, 2018.

Reactive oxygen species (ROS) is a collective term used by biologists to refer to oxygen-centred radicals, such as the superoxide (O2) and hydroxyl radical (OH•), as well as some non-radical derivatives of O2, such as hydrogen peroxide (H2O2), singlet oxygen (1O2) and hypohalites [e.g. hypochlorous acid (HOCl)] Organic derivatives of oxygen species such as alkoxyl radicals (RO•) and peroxyl radicals (ROO•) are also important examples of ROS which can seriously alter cell structures such as lipids, proteins and DNA. Thus, this phenomenon is strongly implicated in the natural aging process: cardiovascular disorder, neurodegenerative, diabetes, Alzheimer’s disease and cancer.

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Nuclease activity of diaza-crown ether complexes of cerium(III) with different functional groups as side arms

Posted on 15. May, 2018.

Cerium(III) complexes of two ligands of a diaza-crown ether with different functional groups as side arms were synthesised and characterised. The catalytic ability of the cerium(III) complexes for pUC19 DNA cleavage was investigated and compared using agarose gel electrophoresis. 

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Effect of reactivity on kinetics and a mechanistic investigation of the reaction between dimethyl acetylenedicarboxylate and 1,3-dicarbonyl compounds in the presence of a catalyst: a spectrophotometric approach

Posted on 7. May, 2018.

A kinetic and mechanistic investigation, using conventional UV-Vis spectrophotometry, of the reaction between dimethyl acetylenedicarboxylate (DMAD) and 1,3-dicarbonyl compounds including acetylacetone (ACAC) and dibenzoylmethane (DBM), has been conducted in a methanol environment with triphenylarsine (TPA) acting as a catalyst. 

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An Open Access article: A compact reaction mechanism of methane oxidation at high pressures

Posted on 27. April, 2018.

In the past decade, there has been increasing interest in fuel propellants for in-space and launcher rocket propulsion that reduce the operational cost of launching and improve rocket operating efficiency and performance. Hydrogen provides the best performance in terms of specific impulse at a high cost for the rocket engine while kerosene provides a cost optimised option for the launch vehicle. 

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Kinetic studies of the reactions between dichlorido(1,2-diaminoethane)zinc(II) and biologically relevant nucleophiles in the presence of chloride

Posted on 16. April, 2018.

The mole-ratio method was used for determining metal–ligand stoichiometry for the reaction between [ZnCl2(en)] (where en = 1,2-diaminoethane or ethylenediamine) and chloride ion at pH 7.2. The results have shown step-wise formation of 1:1 and 1:2 complexes and indicate additional coordination of chloride ions in the first coordination sphere. 

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Kinetics and mechanism of counterionic salt-catalysed piperidinolysis of anionic phenyl salicylate in the presence of cationic–nonionic mixed micelles

Posted on 9. April, 2018.

The quantitative correlation of counterion-affinity to aqueous hexadecyltrimethylammonium bromide (HDAB, cationic micelles/nanoparticles) and the counterion-induced HDAB micellar growth, in the presence of different amounts of poly(ethylene glycol hexadecyl ether) (C16E20, nonionic surfactant), was achieved by the use of a semi-empirical kinetic (SEK) method. 

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‘Green tide’ to biochar: preparation and adsorption isotherms for three typical organic pollutants

Posted on 2. April, 2018.

Enteromorpha prolifera (EP) is a typical marine macroalgae and has the characteristics of easy growth and rapid propagation. The rapid proliferation of EP due to eutrophication and climate change can cause outbreaks of ‘green tide’. ‘Green tide’ has frequently broken out in coastal areas of China’s Yellow Sea and it may damage the marine ecosystem and threaten coastal aquaculture. 

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A free review - Kinetics and mechanism of cationic micelle/flexible nanoparticle catalysis

Posted on 19. March, 2018.

The aqueous surfactant (Surf) solution at [Surf] > cmc (critical micelle concentration) contains flexible micelles/nanoparticles. These particles form a pseudophase of different shapes and sizes where the medium polarity decreases as the distance increases from the exterior region of the interface of the Surf/H2O particle towards its furthest interior region.

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