Chemistry & Earth Sciences: Recent submissions
Now showing items 321-340 of 586
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Indacenodithiazole-Ladder-Type Bridged Di(thiophene)-Difluoro-Benzothiadiazole-Conjugated Copolymers as Ambipolar Organic Field-Effect Transistors
( ACS Publications , 2019 , Article)A series of four donor-acceptor conjugated copolymers P1-P4 with linear and branched side chains based on a ladder-type indacenodithiazole (IDTz) moiety containing an electron-deficient thiazole unit are copolymerized with ... -
Synthesis of Novel Aqua ƞ4-NNNO/Cu(II) Complexes as Rapid and Selective Oxidative Catalysts for O-Catechol: Fluorescence, Spectral, Chromotropism and Thermal Analyses
( MDPI , 2021 , Article)A new tetradentate Schiff base (SB), (E)-4-fluoro-2-(1-((2-(piperazin-1-yl)ethyl)imino)ethyl)phe-nol, was synthesized from condensation of 2-(1-piperazinyl)ethylamine and 5-fluoro-2-hydroxyacetophe-none. This ligand was ... -
Synthesis of novel Cubane [Ni4(O∩O)4(OCH3)4(OOH)4] cluster: XRD/HSA-interactions, spectral, DNA-binding, docking and subsequent thermolysis to NiO nanocrystals
( Elsevier , 2020 , Article)Under liquid-state vibration ultrasonic mode, the Ni4(O∩O)4(OCH3)4(OOH)4 complex [O∩O-bidentate ligand = 4,4,4-trifluoro-1-phenylbutane-1,3-dione] was synthesized from metal precursor and ligand in 10% H2O2/MeOH media, as ... -
Continuous adsorptive removal of glimepiride using multi-walled carbon nanotubes in fixed-bed column.
( Springer , 2021 , Article)Water pollution by emerging pollutants such as pharmaceutical and personal care products is one of today's biggest challenges. The presence of these emerging contaminants in water has raised increasing concern due to their ... -
Kinetic study of the thermo-oxidative decomposition of metformin by isoconversional and theoretical methods
( Elsevier , 2020 , Article)The drug metformin is the most prescribed drug to treat type II diabetes and has been recently reported to have anticancer activities. Because of its wide use, its potential risk on the environment is extremely concerning. ... -
Kinetics of alizarin dye hydrolysis in alkaline medium for wastewater treatment
( Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR , 2021 , Article)The kinetics of the hydrolysis of Alizarin dye (ALZ) in the basic medium is investigated for the purpose of wastewater treatment. ALZ represents a group of aromatic dyes, that are heavy, toxic, and non-biodegradable. The ... -
Solution combustion synthesis of Ni-based hybrid metal oxides for oxygen evolution reaction in alkaline medium
( The Royal Society of Chemistry , 2022 , Article)Oxygen evolution reaction (OER) has arisen as an outstanding technology for energy generation, conversion, and storage. Herein, we investigated the synthesis of nickel-based hybrid metal oxides (NixM1−xOy) and their catalytic ... -
Microwave-assisted palladium-catalyzed cross-coupling reactions: Generation of carbon-carbon bond
( MDPI , 2020 , Article Review)Cross-coupling reactions furnishing carbon–carbon (C–C) bond is one of the most challenging tasks in organic syntheses. The early developed reaction protocols by Negishi, Heck, Kumada, Sonogashira, Stille, Suzuki, and ... -
Crystal structure and spectral of new hydrazine-pyran-dione derivative: DFT enol↔hydrazone tautomerization via zwitterionic intermediate, hirshfeld analysis and optical activity studies
( Elsevier , 2020 , Article)A novel functionalized Schiff base derivative, (E)-3-(1-(2-(9H-fluoren-9-ylidene)hydrazineyl)ethylidene)-6-methyl-2H-pyran-2,4(3H)-dione, was synthesized via subsequent condensation/tautomerization processes in a high ... -
Concentrations of essential and toxic elements and health risk assessment in brown rice from Qatari market
( Elsevier , 2022 , Article)Twenty-two brown rice varieties available in the Qatari market were analyzed for essential and toxic elements by ICP-MS. Found concentrations (µg/kg) were: As: 171 ± 78 (62–343), Cd: 42 ± 60 (4–253), Cr: 515 ± 69 (401–639), ... -
Public Awareness of and Action towards Heart Attack Symptoms: An Exploratory Study
( MDPI , 2020 , Article)Background: Cardiovascular disease (CVD) is still the leading cause of mortality worldwide, and Malaysia is not an exception in this regard. The current research is an attempt to explore symptom awareness of and necessary ... -
Diversity of arbuscular mycorrhizal fungi and its chemical drivers across dryland habitats
( Springer , 2021 , Article)Qatar is largely characterized by a hyper-arid climate and low soil fertility which create a stressful soil environment for arbuscular mycorrhizal (AM) fungi. In a study of AM fungal communities and their relationship with ... -
Impact of CNTs' treatment, length and weight fraction on ordinary concrete mechanical properties
This study investigates the effect of the treatment, length and weight fraction parameters of multi-wall carbon nanotubes (MWCNT) on the mechanical properties of concrete. Mixes with various CNTs’ amounts ranging between ... -
Rational one-pot synthesis of ternary PtIrCu nanocrystals as robust electrocatalyst for methanol oxidation reaction
( Elsevier B.V. , 2020 , Article)Development of self-assembled nanoarchitectures of tailored morphology and composition for diversified applications have received great interest in the last decades. Pt-based nanocrystals (NCs) exhibited enhanced catalytic ... -
Insights into the generation of hydroxyl radicals from H2O2 decomposition by the combination of Fe2+ and chloranilic acid
( Springer , 2021 , Article)In this work, the degradation of chloranilic acid (CAA) by chemical oxidation with H2O2 alone and in the presence of ferrous iron Fe2+ catalyst was investigated in order to improve our understanding on the novel metal-independent ... -
Colorimetry-Based Detection of Biomarkers in Exhaled Breath for Predicting COVID-19 Disease
( Qatar University Press , 2021 , Poster)Exhaled breath is the biological medium that carries relevant medical information and can be used to analyse biomarkers characteristic for detecting abnormal health status. Thus, by systematically analysing the interaction ... -
The Catalytic Thermo-oxidative Decomposition of Glimepiride
( Qatar University Press , 2021 , Poster)In this study, the thermal decomposition of glimepiride, a common antidiabetic drug, was analyzed in the presence of N2 and O2 and various metal oxide catalysts. The analysis was conducted using TGA. The results showed ... -
Germanium Oxide/germanium/ reduced Graphene (GeO2/Ge/r-GO) Hybrid Composite Anodes for Lithium-ion Batteries: Effect of Ge loading on Electrochemical Performance
( Qatar University Press , 2021 , Poster)Hybrid composites between Germanium (Ge) and carbonaceous materials are promising anode materials for Li-ion batteries (LIBs). The mitigation of reduced cycling ability and rate capability allows for the unhindered benefit ... -
Synthesis & Performance Evaluation of Hybrid Cathode Materials for Energy Storage
( Qatar University Press , 2021 , Poster)Research into the development of novel cathode materials for energy storage applications is progressing at a rapid rate to meet the ever-growing demands of modern society. Amongst various options, batteries are playing a ... -
Investigation on the effect of LiTFSI salt on PVDF-based Solid Polymer Electrolyte Membranes for Lithium-Ion Batteries
( Qatar University Press , 2021 , Poster)Solid polymer electrolytes provide an alternative approach to providing improved safety whilst concurrently acting as a performance enhanced separator within Lithium-ion batteries (LIBs). This investigation studies the ...
