Browsing Department of Chemistry by Title

Now showing items 264-283 of 357

Quantum-confined CdTe films deposited by SILAR and their photoelectrochemical stability in the presence of Se2- as a hole scavenger

Haydous, Fatima; Halaoui, Lara I. (American Chemical Society, 2014)

Quantum-confined CdTe films were deposited by successive ionic layer adsorption and reaction (SILAR) on nc-TiO2 and on a conducting oxide electrode (FTO) from aqueous solutions of Cd2+ and Te2- prepared in situ under inert ...
Random initialisation of the excitation-emission matrix fluorescence spectral variables in constraint fashion for subsequent multivariate curve resolution alternating least square analysis on a peculiarly designed calibration set: Simultaneous sensing of nine polycyclic aromatic hydrocarbons in water samples

El-Kurdi, Riham; Kumar, Keshav; Patra, Digambara (Elsevier B.V., 2018)

Polycyclic aromatic hydrocarbons (PAHs) are carcinogenic and mutagenic in nature therefore their sensing in water sample is an important analytical task. In the present work, a novel approach that is based on the random ...
Random spacing between metal tree electrodeposits in linear DLA arrays

Tannous, Jaad; Anouti, Lina; Sultan, Rabih F. (MDPI AG, 2018)

When we examine the random growth of trees along a linear alley in a rural area, we wonder what governs the location of those trees, and hence the distance between adjacent ones. The same question arises when we observe ...
Ranitidine abatement in chemically activated persulfate systems: Assessment of industrial iron waste for sustainable applications

Naim, Sahar; Ghauch, Antoine (Elsevier, 2016)

This work assessed the use of industrial iron waste in the activation of persulfate (PS) (100 mu M) into sulfate radicals (SRs) for the removal of ranitidine (RAN) (28.5 mu M) from aqueous systems. The released iron corrosion ...
Rapid quantification of persulfate in aqueous systems using a modified HPLC unit

Baalbaki, Abbas; Zein Eddine, Nagham; Jaber, Saly; Amasha, Maya; Ghauch, Antoine (Elsevier B.V., 2018)

Existing analytical techniques used for the quantification of persulfate (PS) in water mostly rely on polarography, reductometry or spectrophotometry. Although acceptable to a certain extent, these methods did not satisfy ...
Reactive oxygen species emissions from supra- and sub-ohm electronic cigarettes

Haddad, Christina; Salman, Rola; El-Hellani, Ahmad; Talih, Soha; Shihadeh, Alan Louis; Saliba, Najat A. (Society of Forensic Toxicologists, 2019)

Electronic cigarettes (ECIGs) are battery-powered devices that heat and vaporize solutions containing propylene glycol (PG) and/or vegetable glycerin (VG), nicotine and possible trace flavorants to produce an inhalable ...
Reactivity of Iridium Complexes of a Triphosphorus-Pincer Ligand Based on a Secondary Phosphine. Catalytic Alkane Dehydrogenation and the Origin of Extremely High Activity

Gordon, Benjamin M.; Lease, Nicholas; Emge, Thomas J.; Hasanayn, Faraj; Goldman, Alan S. (American Chemical Society, 2022)

The selective functionalization of alkanes and alkyl groups is a major goal of chemical catalysis. Toward this end, a bulky triphosphine with a central secondary phosphino group, bis(2-di-t-butyl-phosphinophenyl)phosphine ...
Redox activity and chemical interactions of metal oxide nano- and micro-particles with dithiothreitol (DTT)

Nicolas, Johny; Jaafar, Malek; Sepetdjian, Elizabeth; Saad, Walid S.; Sioutas, Constantinos; Shihadeh, Alan Louis; Saliba, Najat A. (Royal Society of Chemistry, 2015)

The wide application and production of nanotechnology have increased the interest in studying the toxicity of nano- and micro-sized particles escaping into air from various aspects of the production process. Metal oxides ...
Revisited Chaos in a Diffusion-Precipitation-Redissolution Liesegang System

Saad, Mustafa; Safieddine, Abbas; Sultan, Rabih F. (American Chemical Society, 2018)

Co(OH)2 Liesegang periodic precipitation systems exhibit oscillations in the number of bands due to band redissolution in high NH4OH concentration. We revisit the problem previously considered (Nasreddine and Sultan, J. ...
Revoking excited state intra-molecular hydrogen transfer by size dependent tailor-made hierarchically ordered nanocapsules

Mouslmani, Mai; Patra, Digambara (2014)

Curcumin associated poly(allylamine hydrochloride) cross-links with dipotassium phosphate and subsequently is assembled with ∼24 nm SiO 2 nanoparticles to form hierarchically ordered nanocapsule structures, which are ...
Role of Ultrastructural Study in the Diagnosis of Medical Renal Diseases: A Tertiary Medical Center Experience and Review of the Literature

El-Chediak, Alissar; Tawil, Ayman N.; Farroukh, Lea; Farhat, Hadi; K̈foury, Hala Kassouf (Wolters Kluwer Medknow Publications, 2022)

The 20th century unfolded many mysteries regarding renal pathology with the advent of ancillary techniques such as immunofluorescence (IF) and electron microscopy (EM) studies. EM plays a major role in confirming the routine ...
Routes to fractality and entropy in Liesegang systems

Kalash, Leen N.; Sultan, Rabih F. (American Institute of Physics Inc., 2014)

Liesegang bands are formed when solutions of co-precipitate ions interdiffuse in a 1D gel matrix. In a recent study [R. F. Sultan, Acta. Mech. Sin. 27, 119 (2011)], Liesegang patterns have been characterized as fractal ...
Salt and bile salt accelerate self-assembly behavior of poly(ethylene oxide)-block-poly(propylene oxide)-block-poly(ethylene oxide) probed by curcumin fluorescence

Bechnak, Linda; Patra, Digambara (Elsevier B.V., 2019)

Understanding self-assembly aspects of block copolymers is of great importance due to their utility in a wide range of applications whether in chemistry, pharmacy, or medicine. In this work, properties of poly(ethylene ...
Seawater analysis by ambient mass-spectrometry-based seaomics

Zabalegui, Nicolás; Manzi, Malena; Depoorter, Antoine; Hayeck, Nathalie; Roveretto, Marie; Li, Chunlin; van Pinxteren, Manuela Schellin; Herrmann, Hartmut; George, Christian; Monge, María Eugenia (Copernicus GmbH, 2020)

An analytical method coupled to multivariate statistical analysis was developed based on transmissionmode direct analysis in real-time quadrupole time-of-flight mass spectrometry (TM-DART-QTOF-MS) to interrogate lipophilic ...
Selective and sensitive turn on fluorescence cyanide recognition in aqueous medium based on Zn(II)–hydrazone metal complex chemosensor

Bouhadir, Kamal Hani; Elaridi, Jomana; Sonji, Ghassan M. (John Wiley and Sons Ltd, 2021)

Detection and quantification of the cyanide ion (CN−) has attracted considerable attention because of its extreme toxicity. A novel Zn(II)-complex, applicable as a fluorescent chemosensor for CN− recognition, was synthesized ...
Selective Detection of Silver Ions Based on Resonance Rayleigh Scattering Spectrometry Using Colloidal Silica Nanoparticles

Dagher, Justine; El-Kurdi, Riham; Patra, Digambara (Springer, 2022)

Colloidal silica or silicon dioxide nanoparticles (SiO2 NPs) are extremely amorphous nanomaterials owing spherical shape. These nanoparticles have gained much interest due to their usage in various fields; going from the ...
Selective Photocatalytic Dehydrogenation of Formic Acid by an in Situ-Restructured Copper-Postmetalated Metal-Organic Framework under Visible Light

Issa Hamoud, Houeida; Damacet, Patrick; Fan, Dong; Assaad, Nisrine; Lebedev, Oleg I.; Krystianiak, Anna; Gouda, Abdelaziz M.; Heintz, Olivier; Daturi, Marco; Maurin, Guillaume T.; Hmadeh, Mohamad; El-Roz, Mohamad (American Chemical Society, 2022)

Formic acid is considered as one of the most promising liquid organic hydrogen carriers. Its catalytic dehydrogenation process generally suffers from low activity, low reaction selectivity, low stability of the catalysts, ...
Selective resonance Rayleigh scattering spectroscopic determination of persulfate using cetyl trimethylammonium bromide capped cuo nanograins

Qasem, Mayada; El-Kurdi, Riham; Patra, Digambara (Elsevier Inc., 2020)

The authors were able successfully to produce uniform copper oxide nanograins (CuO NGs) using cetyl trimethylammonium bromide as capping agent. These nanograins were developed to design a new nanoprobe that will be able ...
Self-assembled lanthanum hydroxide microspheres within a reaction-diffusion framework: Synthesis, characterization, control and application

Al Akhrass, Ghida A.; Ammar, Manal; El-Rassy, Houssam; Al-Ghoul, Mazen (Royal Society of Chemistry, 2016)

We present the synthesis of spherical microparticles by self-assembly of lanthanum hydroxide nanoplatelets in a reaction-diffusion framework, which consists of diffusing an outer ammonia solution into a hydrogel matrix ...
Self-Assembly of Board-Shaped Diketopyrrolopyrrole and Isoindigo Mesogens into Columnar π-π Stacks

Taing, Hi; Cassar, Adam Michael; Ocheje, Michael Udunyi; Rondeau-Gagné, Simon; El-Assaad, Tarek H.; Sharabati, Christa A.; Kaafarani, Bilal R.; Eichhorn, S. Holger (Wiley-VCH Verlag, 2019)

Diketopyrrolopyrrole and isoindigo are commercially important dyes that have recently found broad application as electron acceptor and light-absorbing groups in organic semiconductors. Their self-assembly into specific ...

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Browsing Department of Chemistry by Title

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