Chemistry & Earth Sciences: المرسلات الحديثة
السجلات المعروضة 361 -- 380 من 614
-
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 ... -
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 ... -
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 ... -
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 ... -
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 ... -
Understanding the electrochemical performance of LiNi0. 5Mn1.5O4 coated with Yttria and distributed over graphene nanosheets as cathode in li-ion batteries
( Qatar University Press , 2021 , Poster)LiNi0.5Mn1.5O4 is a promising cathode material for lithium-ion batteries with a high-voltage spinel structure. A microwave-assisted chemical co-precipitation method was used to synthesize Y2O3 coated quasi-spheres of ... -
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 ... -
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 ... -
Detecting Organic Nitrogen with 1H-15N HMBC Spectra
( Qatar University Press , 2021 , Poster)NMR spectroscopy has been the most important tool for organic chemistry research, providing detailed structure information. While 1H and 13C NMR spectra were frequently measured, 15N NMR spectra were relatively rare, even ... -
Influence of the heteroatom on the optoelectronic properties and transistor performance of soluble thiophene-, selenophene- and tellurophene-vinylene copolymers
( Royal Society of Chemistry , 2016 , Article)We report the first soluble poly(3-dodecyl tellurophenylene-vinylene) polymer (P3TeV) by Stille copolymerization and compare its properties to the analogous thiophene and selenophene containing polymers. The optical band ... -
Isolation and Physicochemical Characterization of Laccase from Ganoderma lucidum-CDBT1 Isolated from Its Native Habitat in Nepal
( Hindawi Limited , 2016 , Article)At present, few organisms are known to and capable of naturally producing laccases and white rot fungi are one such group. In the present study, three fungal species, namely, Ganoderma lucidum-CDBT1, Ganoderma japonicum, ... -
Near infrared plasmonic sensor based on Fano resonance
( SPIE , 2016 , Conference)We introduce a compact plasmonic resonator that is capable of generating a Fano resonance in the transmission spectrum. The Fano resonance is observed with its unique lineshape. The proposed design is simple, compact, easy ... -
Novel palladium(II) and platinum(II) complexes with a fluoropiperazinyl based ligand exhibiting high cytotoxicity and anticancer activity in vitro
( Hindawi Publishing Corporation , 2016 , Article)cis-Dichloro-palladium(II) and cis-dichloro-platinum(II) complexes (2, 4) of the general formula [M(N-N)Cl2] (M=Pd(II) and Pt(II), N-N= 1,2-diamino-4-fluoro-5-(4-methyl-1-piperazinyl) benzene, (DFMPB)) and the dicationic ... -
On the nature of defect states in tungstate nanoflake arrays as promising photoanodes in solar fuel cells
( Royal Society of Chemistry , 2016 , Article)An electrochemical method is presented to study the nature of the defect states in sub-stoichiometric tungsten oxide nanoflake photoanodes used in water splitting. First, stoichiometric/sub-stoichiometric tungstate nanoflake ... -
Physicochemical Properties of Derivatives of N,N-Dimethylamino–cyclic–chalcones: Experimental and Theoretical Study
( Wiley-Blackwell , 2016 , Article)A series of three N,N-dimethyl-amino-cyclic-chalcones chromophores of the D-π-A type (1-3) where, (Donor= N,N-dimethyl-aniline) and Acceptor= indan-1-one (1), 3,4-dihydro-2H-naphthalen-1-one (2) and 3,4,5-tetrahydro-benz ... -
Effects of Structure and Environment on the Spectroscopic Properties of (3-Amino-Substituted-Thieno[2,3-b] Pyridine-2-yl)Pyridine/Quinolin-2-yl)(Phenyl)Methanones: Experimental and Theoretical Study
( Springer New York LLC , 2016 , Article)The electronic absorption, excitation and fluorescence properties of two 3-amino-substituted-thieno[2,3-b]pyridine/quinolin-2-yl)(phenyl)methanones; (referred to as compounds 1–2: where 3-amino-4,5,6-trimethyl-thieno[2,3 ... -
RGO/Stibnite Nanocomposite as a Dual Anode for Lithium and Sodium Ion Batteries
( American Chemical Society , 2016 , Article)RGO/Sb2S3 nanocomposite has been investigated in this study as a dual anode material for Li- and Na-ion battery applications. The stibnite phase of Sb2S3, and its rGO composite have been obtained from a molecular complex, ... -
Conjugated Copolymers of Vinylene Flanked Naphthalene Diimide
( American Chemical Society , 2016 , Article)We report the synthesis of a novel naphthalene diimide (NDI) monomer containing two (tributylstannyl)vinyl groups. The utility of this building block is demonstrated by its copolymerization with five different electron-rich ... -
Interaction of: P -synephrine with p -chloranil: Experimental design and multiple response optimization
( Royal Society of Chemistry , 2016 , Article)In the current paper, and for the first time, spectrophotometry coupled with a set of factorial designs was executed as a new tool for investigating the interaction between p-synephrine (p-SY) and p-chloranil (p-CHL). Two ...
