Chemistry & Earth Sciences: Recent submissions
Now showing items 381-400 of 601
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Tuning the electrical properties of polyaniline by copolymerization with o-bromoaniline
( World Scientific Publishing Co. Pte Ltd , 2017 , Article)Polyaniline, poly(o-bromoaniline) and poly(aniline-co-o-bromoaniline)s have been prepared by chemical oxidative polymerization methods. A series of poly(aniline-co-o-bromoaniline) derivatives has been prepared by the ... -
Treatment of Soil-Washing Effluents Polluted with Herbicide Oxyfluorfen by Combined Biosorption-Electrolysis
( American Chemical Society , 2017 , Article)The treatment of soil-washing effluents polluted with herbicide oxyfluorfen is studied using a combined process consisting of biosorption and electrolysis. Results show that oxyfluorfen is very efficiently removed from ... -
Delicate Structural Control of Si-SiOx-C Composite via High-Speed Spray Pyrolysis for Li-Ion Battery Anodes
( American Chemical Society , 2017 , Article)Despite the high theoretical capacity, silicon (Si) anodes in lithium-ion batteries have difficulty in meeting the commercial standards in various aspects. In particular, the huge volume change of Si makes it very challenging ... -
A Cross-Coupling Approach to Amide Bond Formation from Esters
( American Chemical Society , 2017 , Article)A palladium-catalyzed cross-coupling between aryl esters and anilines is reported, enabling access to diverse amides. The reaction takes place via activation of the C-O bond by oxidative addition with a Pd-NHC complex, ... -
Iron and cobalt salicylaldimine complexes as catalysts for epoxide and carbon dioxide coupling: effects of substituents on catalytic activity
( Springer International Publishing , 2017 , Article)The synthesis and characterization of substituted ONNO-donor salen-type Schiff base complexes of general formula [MIII(L)Cl] (L�=�Schiff base ligand, M�=�Fe, Co) is reported. The complexes have been applied as catalysts ... -
Crystal structure of (E)-furan-2-carbaldehyde O-benzoyloxime
( International Union of Crystallography , 2017 , Article)In the title compound, C12H9NO3, the benzoate and furan rings are almost coplanar, making a dihedral angle of 11.68 (9)°. The twist angle between the –COO group and the benzene ring is only 2.79 (16)°. In the crystal, ... -
Carbon Dioxide Solubility in Phosphonium-, Ammonium-, Sulfonyl-, and Pyrrolidinium-Based Ionic Liquids and their Mixtures at Moderate Pressures up to 10 bar
( American Chemical Society , 2017 , Article)Carbon dioxide solubility in four ionic liquids (ILs) of different families with different cationic-anionic groups (tributylmethylphosphonium formate, butyltrimethylammonium bis(trifluoromethyl sulfonyl) imide, ... -
Rice is a potential dietary source of not only arsenic but also other toxic elements like lead and chromium
( Elsevier B.V. , 2017 , Article)Rice is a staple food and a good source of nutrition for half of the earth’s population including Middle Eastern countries. However, rice may accumulate hazardous levels of toxic elements. In KSA, rice is imported from ... -
Hybrid plamonic conductor-gap-silicon microring-on-disks electro-optic modulator
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference)In this work, we propose a novel design of a double microring-on-disk electro-optic modulator based on hybrid plasmonic conductor-gap-silicon platform utilizing the electromagnetic induced transparency response. The modulator ... -
A study of low-temperature CO oxidation over mesoporous Cuo-TiO2 nanotube catalysts
( MDPI AG , 2017 , Article)Supported copper oxide nanoparticles have attracted considerable attention as active and non-precious catalysts for many catalytic oxidation reactions. Herein, mesoporous xCuO-TiO2 nanotube catalysts were fabricated, and ... -
Silver Nanoparticles-Decorated Titanium Oxynitride Nanotube Arrays for Enhanced Solar Fuel Generation
( Nature Publishing Group , 2017 , Article)We demonstrate, for the first time, the synthesis of highly ordered titanium oxynitride nanotube arrays sensitized with Ag nanoparticles (Ag/TiON) as an attractive class of materials for visible-light-driven water splitting. ... -
An efficient eco advanced oxidation process for phenol mineralization using a 2D/3D nanocomposite photocatalyst and visible light irradiations
( Nature Publishing Group , 2017 , Article)Nanocomposites (CNTi) with different mass ratios of carbon nitride (C3N4) and TiO2 nanoparticles were prepared hydrothermally. Different characterization techniques were used including X-ray diffraction (XRD), UV-Vis diffuse ... -
Effects of combined calcium hypochlorite and chlorine dioxide on drinking water quality in Qatar and disinfection by-products formation
( Desalination Publications , 2017 , Article)Chlorite, chlorate, bromate and trihalo methanes (THMs) are included in WHO guidelines for drinking water quality. This study examined dosing different chlorine concentrations as calcium hypochlorite (Ca(ClO)2 ) to water ... -
Vanadium(V) complexes with hydrazides and their spectroscopic and biological properties
( Springer Netherlands , 2017 , Article)The present study explores the synthesis and inhibitory potential of vanadium(V) complexes of hydrazides (1c-12c) against oxidative enzymes including xanthine oxidase and lipoxygenase (LOX). In addition, non-enzymatic ... -
Synthesis and physicochemical studies of perovskite manganite La0.8Ca0.2Nn1 xCoxO3(0?x?0.3)
( Seoul National University 501-321 , 2017 , Article)The physicochemical properties of La0.8Ca0.2Mn1xCoxO nanopowders as a function of Co content (x) have been investigated. La0.8Ca0.2Mn1xCoxO nanopowders were synthesized by sol-gel method and morphologically and structurally ... -
Electro-Optic Plasmonic Modulator with Direct Coupling to Silicon Waveguides
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Article)A novel plasmonic Mach-Zehnder interferometer is proposed with a nonlinear polymer. Orthogonal junction coupling between silicon and plasmonic waveguides is exploited to omit the need for tapers, and in turn, reduce the ... -
Rational one-step synthesis of porous PtPdRu nanodendrites for ethanol oxidation reaction with a superior tolerance for CO-poisoning
( Royal Society of Chemistry , 2017 , Article)Precise fabrication of porous ternary Pt-based nanodendrites is very important for electrochemical energy conversion owing to high surface area and great molecular accessibility of these nanodendrites. Herein, PtPdRu porous ... -
Enhancing the performance of electro-peroxone by incorporation of UV irradiation and BDD anodes
( Taylor and Francis Ltd. , 2017 , Article)In this work, the treatment of 4-nitrophenol (NP) in water by ozonation, electrolysis, electro-peroxone (EP), and photo-electro-peroxone (PEP) processes was investigated. PEP process is based on the combination of ozonation, ... -
Potato Peels as an Adsorbent for Heavy Metals from Aqueous Solutions: Eco-Structuring of a Green Adsorbent Operating Plackett-Burman Design
( Hindawi Limited , 2019 , Article)Treatment of wastewater is becoming a concern of an increasing prominence. Trace amounts of toxic metalloids and heavy metals (HMs) would contaminate large volumes of water. Being present as traces, removal of these ... -
Chemistry, alpha-glucosidase and radical scavenging properties of uranyl(VI) hydrazide complexes
( Bentham Science Publishers , 2019 , Article)Background: Antioxidant, anti-inflammatory, antiviral and antitumoral activities among others are essential characteristics in the development of novel therapeutic compounds. Acid hydrazides can form complexation with ...
