Chemistry & Earth Sciences: Recent submissions
Now showing items 241-260 of 601
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Thermally assisted efficient electrochemical lithium extraction from simulated seawater
( Elsevier , 2022 , Article)Extracting lithium electrochemically from seawater has the potential to resolve any future lithium shortage. However, electrochemical extraction only functions efficiently in high lithium concentration solutions. Herein, ... -
Porous dendritic BiSn electrocatalysts for hydrogenation of 5-hydroxymethylfurfural
( Royal Society of Chemistry , 2022 , Article)The electrocatalytic hydrogenation of 5-hydroxymethylfurfural (HMF) to 2,5-bis(hydroxymethyl)furan (BHMF) is an alternative to conventional heterogeneous catalysis with H2 at high temperatures and pressures. Although Ag ... -
Bromate reduction by ultraviolet light irradiation using medium pressure lamp
( Taylor & Francis , 2013 , Article)Bromate reduction in water by ultraviolet irradiation using medium-pressure lamps (UV-M) emitting light in the range of 200-600 nm has been investigated. Effects of certain experimental parameters including the initial ... -
Optical and electrical properties of porous silicon impregnated with congo red dye
( American Institute of Physics , 2013 , Article)Incorporation of molecules into porous silicon (PS) matrix is of particular interest for potential utilization in hybrid organic-semiconductor devices. In this study, the incorporation of Congo Red molecules inside luminescent ... -
Treatment of synthetic urine by electrochemical oxidation using conductive-diamond anodes
( Springer , 2015 , Article)In this work, the electrochemical oxidation of synthetic urine by anodic oxidation using boron-doped diamond as anode and stainless steel as cathode was investigated. Results show that complete depletion of chemical oxygen ... -
Nitrate removal from water using UV-M/S2O42- advanced reduction process
( Springer , 2013 , Article)In this work, a new process called advanced reduction process (ARP) was used for nitrate removal from water. This ARP process combines sodium dithionite as reducing agent with ultraviolet irradiation using medium pressure ... -
Synthesis of supported silver nano-spheres on zinc oxide nanorods for visible light photocatalytic applications
( Elsevier , 2014 , Article)We report the synthesis of silver (Ag) nano-spheres (NS) supported on zinc oxide (ZnO) nanorods through two step mechanism, using open vessel microwave reactor. Direct reduction of ZnO from zinc nitrates was followed by ... -
Efficient degradation of chloroquine drug by electro-Fenton oxidation: Effects of operating conditions and degradation mechanism
( Elsevier , 2020 , Article)In this work, the degradation of chloroquine (CLQ), an antiviral and antimalarial drug, using electro-Fenton oxidation was investigated. Due to the importance of hydrogen peroxide (H2O2) generation during electro-Fenton ... -
Synthesis, Characterization and Electrochemical Evaluation of Layered Vanadium Phosphates as Cathode Material for Aqueous Rechargeable Zn-ion Batteries
( Frontiers , 2021 , Article)The potential application of rechargeable multivalent ion batteries in portable devices and renewable energy grid integration have gained substantial research interest in aqueous Zn-ion batteries (ZIBs). Compared to Li-based ... -
In situ generated MWCNT-FeF3·0.33 H2O nanocomposites toward stable performance cathode material for lithium ion batteries
( Springer , 2019 , Article)A hydrated iron(III) fluoride (FeF3·0.33 H2O) and hydrated multi-walled carbon nanotubes-iron(III) fluoride (MWCNT-FeF3·0.33 H2O) composites were prepared by a simple two-step method. Firstly, a wet chemistry reaction ... -
SiGe@Cu films as stable and high energy density anodes for lithium-ion microbatteries
( Springer , 2020 , Article)In this work, the deposition of stoichiometric SiGe alloy on Cu substrate by radio frequency (RF) magnetron sputtering was examined. The structure, morphology, and composition of the SiGe@Cu were identified by X-ray ... -
Binary Si–Ge Alloys as High-Capacity Anodes for Li-Ion Batteries
( Wiley , 2020 , Article)Herein, Si–Ge binary alloy films are prepared by deposition on rough copper (Cu) foil and multiwalled carbon nanotube (MWCNT) sheets using radio frequency (RF) magnetron sputtering. The as-prepared SiGe@Cu and SiGe@MWCNT ... -
Understanding the electro-catalytic effect of benzene ring substitution on the electrochemical oxidation of aniline and its derivatives using BDD anode: Cyclic voltammetry, bulk electrolysis and theoretical calculations
( Elsevier , 2020 , Article)The use of boron doped diamond (BDD) films in environmental applications has been extensively proved. This electrocatalytic material produces higher concentrations of free‑hydroxyl radicals on its surface, favoring a ... -
A brief overview of RF sputtering deposition of boron carbon nitride (BCN) thin films
( Springer , 2018 , Article)A great part of interest has been paid for fabricating new materials with novel mechanical, optical, and electrical properties. Boron carbon nitride (BCN) ternary system was applied for variable bandgap semiconductors and ... -
The electrolytic treatment of synthetic urine using DSA electrodes
( Elsevier , 2015 , Article)In this work, the electrochemical treatment of synthetic urine by anodic oxidation using dimensionally stable anode (DSA) was studied. The influence of current density and temperature on the kinetics and efficiency of ... -
Fabrication of Si3n4@si@cu thin films by RF sputtering as high energy anode material for Li-ion batteries
( MDPI , 2021 , Article)Silicon and silicon nitride (Si3N4 ) are some of the most appealing candidates as anode materials for LIBs (Li-ion battery) due to their favorable characteristics: low cost, abundance of Si, and high theoretical capacity. ... -
Electrochemical Analysis of Sulfisoxazole Using Glassy Carbon Electrode (GCE) and MWCNTs/Rare Earth Oxide (CeO2 and Yb2O3) Modified-GCE Sensors
( MDPI , 2022 , Article)In this work, new electrochemical sensors based on the modification of glassy carbon electrode (GCE) with multiwalled carbon nanotubes (MWCNTs)—rare metal oxides (REMO) nanocomposites were fabricated by drop-to-drop method ... -
Electrochemical oxidation of 2-chloroaniline in single and divided electrochemical flow cells using boron doped diamond anodes
( Elsevier , 2021 , Article)Electrochemical oxidation (EO) using boron-doped diamond (BDD) electrodes attracted increasing interests due to its high efficiency in mineralizing chlorinated organic pollutants in water. However, it produces hazardous ... -
Phytochemical Analysis of Acacia ehrenbergiana (Hayne) Grown in Qatar: Identification of Active Ingredients and Their Biological Activities
( MDPI , 2022 , Article)Acacia ehrenbergiana (Hayne), also known as Salam, is a highly drought resistant shrub distributed in North and East Africa, and the Arabian Peninsula. The plant is gathered for its gum and fiber, and is an important legume ... -
3-Aminopyridine Salicylidene: A Sensitive and Selective Chemosensor for the Detection of Cu(II), Al(III), and Fe(III) with Application to Real Samples
( MDPI , 2022 , Article)Interest in developing selective and sensitive metal sensors for environmental, biological, and industrial applications is mounting. The goal of this work was to develop a sensitive and selective sensor for certain metal ...
