تصفح Chemistry & Earth Sciences حسب العنوان
السجلات المعروضة 521 -- 540 من 582
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Synthesis, spectroscopic and thermal studies of the reactions of the donors piperazine and N,N′-dimethylpiperazine with σ- and π-acceptors
( Elsevier , 2008 , Article)Abstract The interactions of the electron donors piperazine (PIP) and N,N′-dimethylpiperazine (DMPIP) with the σ-acceptor iodine and the π-acceptors tetracyanoethylene (TCNE) and 2,3-dichloro-5,6-dicyano-1,4-benzoquinone ... -
Synthesis, spectroscopic and thermal studies of vanadyl-N,N'-o- phenylenebis(salicylideneiminato) complexes
( Polskie Towarzystwo Chemiczne , 2004 , Article)Two new complexes [V(O)(sal-o-phdn)(H2O)] and [V(O)(sal-o-phdn)(C2H5OH)] (sal-o-phdn = N,N′-o-phenylenebis(salicylideneiminato)) have been synthesized and characterized by elemental and thermal analysis and electronic, ... -
Synthesis, spectroscopic, thermal and structural investigations of charge-transfer complexes of 4,4′-trimethylenedipiperidine with chloranil, TBCHD, DDQ, TCNQ and iodine
( Elsevier , 2009 , Article)The charge-transfer interactions between the electron donor 4,4′-trimethylenedipiperidine (TMDP) and the acceptors 2,3,5,6-tetrachloro-1,4-benzoquinone (chloranil), 2,4,4,6-tetrabromo-2,5-cyclohexadienone (TBCHD), ... -
Synthesis, structural and lithium storage studies of graphene-LiVSi 2 O 6 composites
( Institute for Ionics , 2019 , Article)Clinopyroxene LiVSi2O6 phase has been synthesised in this study by a single step solid state reaction in argon atmosphere at 900 °C, and its electrochemical properties have been investigated. Graphene composite of the ... -
Synthesis, structural elucidation and optical activity of symmetric Schiff base-functionalized ferrocenes: Synergetic experimental and DFT insights
(2023 , Article)A number of Schiff base functionalized derivatives (3a-c) was synthesized from the conventional dehydration of ferrocenecarboxaldehyde and diamine precursors in acetonitrile as a solvent at ambient conditions. IR, UV–Vis, ... -
Synthesis, Vibrational (IR), Thermal analysis and Quantumchemical Study of a Series of Cyclic Chalcones
( Wiley-Blackwell , 2016 , Article)In this work, the influence of expanding the cyclic ring (adding methylene group) on the properties of three dimethylamino chalcones derivatives (1-3), is addressed, using a combined experimental (vibrational spectra (IR), ... -
Systematic Molecular-Size Variants in Diphosphonate Inhibitors for Oilfield Scale Management
( American Chemical Society , 2023 , Article)Organophosphorus-based scale inhibitors (SIs) have been widely used in the petroleum industry for several decades. Among them, aminomethylenephosphonates (possessing at least one −NH+-CH2-PO3H- moiety) have shown outstanding ... -
Tailoring the deposition of MoSe2 on TiO2 nanorods arrays via radiofrequency magnetron sputtering for enhanced photoelectrochemical water splitting
( Elsevier , 2023 , Article)MoSe2/1 D TiO2 nanorods (NRs) heterojunction assembly was systematically fabricated, and its photoelectrocatalytic properties were investigated. The fabrication process involves the growth of 1D TiO2 NRs arrays on FTO ... -
Tailoring the efficiency of an active catalyst for CO abatement through oxidation reaction: The case study of samarium-doped ceria
( Elsevier Ltd , 2018 , Article)In the present study, for the first time we tailored organic chemistry traditional synthesis tools towards preparation of CexSm1-xO2 (x = 0.2, 0.5, 0.8, 1) fluorite-type mixed oxides which are used for CO abatement. In ... -
Tailoring the reducibility and catalytic activity of CuO nanoparticles for low temperature CO oxidation
( Royal Society of Chemistry , 2018 , Article)Copper oxide (CuO) nanoparticles have received considerable interest as active and inexpensive catalysts for various gas–solid reactions. The CuO reducibility and surface reactivity are of crucial importance for the high ... -
TDDFT Investigation of the hybrid organic inorganic perovskite: CH 3 NH 3 PbC 3
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference Paper)Hybrid organic-inorganic metal perovskites (chemical formula: ABX3, A-organic cation, B-metal ion, X-halide) are the latest advancement for increasing efficiency in thin-film solar cells or Dye Solar Cells (DSC). They have ... -
Techno-economic assessment of waste mandarin biochar as a green adsorbent for binary dye wastewater effluents of methylene blue and basic fuchsin: Lab- and large-scale investigations
( Elsevier , 2024 , Article)Treating polluted wastewater effluents on a large-scale requires the development of high performance and cost-effective adsorbents. The recycling of waste mandarin peels, an environmentally friendly, and copiously available ... -
Temperature sensor based on composite film of vanadium complex (VO2(3-fl)) and CNT
( J. Semicond. , 2015 , Article)A vanadium complex (VO2(3-fl)) and CNT composite film based temperature sensor is reported in this study. Surface-type silver electrodes were deposited on the glass substrates. A thin film of VO2(3-fl) and CNT composite ... -
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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 ... -
The Effect of the Moroccan Salvadora Persica Extract on the Corrosion Behavior of the Ni-Cr Non-precious Dental Alloy in Artificial Saliva
( Springer Science and Business Media Deutschland GmbH , 2021 , Article)To evaluate, for the first time, the effect of the Moroccan Miswak (Salvadora persica) extract on the corrosion behavior of Ni-Cr dental alloy in artificial saliva, the electrochemical techniques, such as Inductively Coupled ... -
The electronic origin of the ground state spectral features and excited state deactivation in cycloalkanones: the role of intermolecular H-bonding in neat and binary mixtures of solvents
( NLM (Medline) , 2019 , Article)In this study, a D-A cycloalkanone (K1) has been investigated by steady state absorption and fluorescence in neat solvents and in three binary mixtures of nonpolar aprotic/polar protic, polar aprotic/polar protic, and polar ... -
The inhibitive impact of both kinds of 5-isothiocyanatomethyl-8-hydroxyquinoline derivatives on the corrosion of carbon steel in acidic electrolyte
( Elsevier B.V. , 2019 , Article)Two new 8-hydroxyquinoline derivatives namely 1-((8-hydroxyquinolin-5-yl)methyl)-3-methylthiourea (HQMT) and 5-isothiocyanatomethyl-8-hydroxyquinoline (TCHQ) were synthesized and identified by various spectroscopic methods ... -
The role of type II FB (I):Tl+ defect in laser light generation and color image formation at the low coordination surface sites of AgBr: Ab initio calculations
( Elsevier , 2006 , Article)The role of type II FB (I):Tl+ color center at low coordination surface sites of AgBr thin films in providing tunable laser activity and photographic sensitization is examined. The double-well potential at this site is ... -
The solvatochromic, spectral, and geometrical properties of nifenazone: A DFT/TD-DFT and experimental study
( Royal Society of Chemistry , 2014 , Article)The solvatochromic, spectral, and geometrical properties of nifenazone (NIF), a pyrazole-nicotinamide drug, were experimentally and computationally investigated in several neat solvents and in hydro-organic binary systems ...