Browsing Department of Chemistry by Title

Now showing items 51-70 of 357

Cadmium-Aluminum Layered Double Hydroxide Microspheres for Photocatalytic CO2 Reduction

Saliba, Daniel; Ezzeddine, Alaa; Sougrat, Rachid; Khashab, Niveen M.; Hmadeh, Mohamad; Al-Ghoul, Mazen (Wiley-VCH Verlag, 2016)

We report the synthesis of cadmium-aluminum layered double hydroxide (CdAl LDH) using the reaction-diffusion framework. As the hydroxide anions diffuse into an agar gel matrix containing the mixture of aluminum and cadmium ...
Calculation of ionization energy, electron affinity, and hydride affinity trends in pincer-ligated d8-Ir(tBu4PXCXP) complexes: Implications for the thermodynamics of oxidative H2 addition

Baroudi, Abdulkader; El-Hellani, Ahmad; Bengali, Ashfaq A.; Goldman, Alan S.; Hasanayn, Faraj (American Chemical Society, 2014)

DFT methods are used to calculate the ionization energy (IE) and electron affinity (EA) trends in a series of pincer ligated d8-Ir(tBu4PXCXP) complexes (1-X), where C is a 2,6-disubstituted phenyl ring with X = O, NH, CH2, ...
Calculations on the non-classical β-hydride elimination observed in trans-(H)(OMe)-Ir(Ph)(PMe3)3: possible production and reaction of methyl formate

Ataya, Mohamad; Hasanayn, Faraj (Canadian Science Publishing, 2021)

The octahedral trans hydrido-alkoxide complex trans-(H)(OMe)-Ir(Ph)(PMe3 )3 (2-OCH3 ) was prepared by Milstein and coworkers by addition of methanol to Ir(Ph)(PMe3 )3 (1). 2-OCH3 was discovered to undergo a methanol catalyzed ...
Capping of supramolecular curcubit[7]uril facilitates formation of Au nanorods during pre-reduction by curcumin

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

Curcumin being biologically available and non-toxic natural compound is an attractive and alternative green reagent for the reduction of gold salts to elemental gold. Here, we bring new insight that shape and size of the ...
Carbon Monoxide and Small Hydrocarbon Emissions from Sub-ohm Electronic Cigarettes

El-Hellani, Ahmad; Al-Moussawi, Samira; El-Hage, Rachel; Talih, Soha; Salman, Rola; Shihadeh, Alan Louis; Saliba, Najat A. (American Chemical Society, 2019)

Electronic cigarettes (ECIGs) are routinely advertised as a safer alternative to combustible cigarettes. ECIGs have been shown to emit less toxicants than conventional cigarettes. This study presents for the first time the ...
Carboxylate Counteranions in Electronic Cigarette Liquids: Influence on Nicotine Emissions

El-Hellani, Ahmad; El-Hage, Rachel; Salman, Rola; Talih, Soha; Shihadeh, Alan Louis; Saliba, Najat A. (American Chemical Society, 2017)

The wide pH range reported for electronic cigarette (ECIG) liquids indicates that nicotine may be present in one or more chemical forms. The nicotine form affects the bioavailability and delivery of nicotine from inhaled ...
Carrier Solvents of Electronic Nicotine Delivery Systems Alter Pulmonary Surfactant

Hayeck, Nathalie; Zoghzoghi, Carl; Karam, Ebrahim; Salman, Rola; Karaoghlanian, Nareg; Shihadeh, Alan Louis; Eissenberg, Thomas E.; Zeineldine, Salah M.; Saliba, Najat A. (American Chemical Society, 2021)

In late 2019, hundreds of users of electronic products that aerosolize a liquid for inhalation were hospitalized with a variety of respiratory and gastrointestinal symptoms. While some investigations have attributed the ...
Catalysts for NOx selective catalytic reduction by hydrocarbons (HC-SCR)

Mrad, Raya; Aissat, Aissa; Cousin, Renaud; Courcot, Dominique; Siffert, Stéphane (Elsevier B.V., 2015)

This short review concerns the efficient catalysts for HC-SCR discovered more than 20 years ago. In 1990, Iwamoto proposed Cu ion-exchanged ZSM-5, and it was the first powerful catalyst for HC-SCR. This paper presents first ...
Cesium Lead Bromide Perovskites: Synthesis, Stability, and Photoluminescence Quantum Yield Enhancement by Hexadecyltrimethylammonium Bromide Doping

Tawil, Christina Al; El-Kurdi, Riham; Patra, Digambara (American Chemical Society, 2022)

Perovskite nanoparticles having a crystalline structure have attracted scientists' attention due to their great potential in optoelectronic and scintillation applications. The photoluminescence quantum yield (PLQY) is one ...
Characteristics and toxicant emissions of JUUL electronic cigarettes

Talih, Soha; Salman, Rola; El-Hage, Rachel; Karam, Ebrahim; Karaoghlanian, Nareg; El-Hellani, Ahmad; Saliba, Najat A.; Shihadeh, Alan Louis (BMJ Publishing Group, 2019)

Introduction JUUL is an electronic cigarette (ECIG) with a compact form factor. It is prefilled with a liquid that is advertised to contain a high concentration of nicotine salt. JUUL commands 50% of the US ECIG market ...
Chemical Characteristics and Brown Carbon Chromophores of Atmospheric Organic Aerosols Over the Yangtze River Channel: A Cruise Campaign

Wang, Xinke; Hayeck, Nathalie; Brüggemann, Martin; Abis, Letizia; Riva, Matthieu; Lu, Yiqun; Wang, Buwei; Chen, Jianmin; George, Christian; Wang, Lin (Blackwell Publishing Ltd, 2020)

Organic aerosols (OAs) have important influences on the climatic implications and health effects of atmospheric aerosols. Among the complex OA constituents, brown carbon (BrC) accounts for a substantial mass fraction and ...
Chemical waves in heterogeneous media

Ayass, Mahmoud M.; Al-Ghoul, Mazen; Lagzi, Istvàn (American Chemical Society, 2014)

Formation of precipitation patterns and wave propagation in excitable media have attracted considerable scientific interest in the context of nonlinear chemical kinetics because of a new approach to micro and nanofabrication, ...
Chemically and thermally activated persulfate for theophylline degradation and application to pharmaceutical factory effluent

Al Hakim, Suha; Baalbaki, Abbas; Tantawi, Omar N.; Ghauch, Antoine (Royal Society of Chemistry, 2019)

Degradation of PPCPs by AOPs has gained major interest in the past decade. In this work, theophylline (TP) oxidation was studied in thermally (TAP) and chemically (CAP) activated persulfate systems, separately and in ...
Chitosan coated zinc curcumin oxide nanoparticles for the determination of ascorbic acid

Arab, Celine; El-Kurdi, Riham; Patra, Digambara (Elsevier B.V., 2021)

Zinc curcumin oxide nanoparticles, coated with chitosan (Zn(Cur)O-Chi) were found to be an excellent nanoprobe for the detection of ascorbic acid. These nanoparticles were prepared through a simple green synthesis route. ...
Chitosan oligosaccharide/silica nanoparticles hybrid porous gel for mercury adsorption and detection

El-Kurdi, Riham; Chebl, Mazhar; Sillanpӓӓ, Mika A.; El-Rassy, Houssam; Patra, Digambara (Elsevier Ltd, 2021)

Hybrid porous gel has successfully been prepared in situ by interaction of silica nanoparticles with chitosan oligosaccharide lactate. The concentration of silica nanoparticle is crucial for the formation of the gel. Water ...
Clouds and “throat hit”: Effects of liquid composition on nicotine emissions and physical characteristics of electronic cigarette aerosols

Baassiri, Mohamad; Talih, Soha; Salman, Rola; Karaoghlanian, Nareg; Saleh, Rawad; El-Hage, Rachel; Saliba, Najat A.; Shihadeh, Alan Louis (Taylor and Francis Inc., 2017)

Electronic cigarettes (ECIGs) heat and vaporize a liquid mixture to produce an inhalable aerosol that can deliver nicotine to the user. The liquid mixture is typically composed of propylene glycol (PG) and vegetable glycerin ...
Columnar Mesomorphism of Board-Shaped Perylene, Diketopyrrolopyrrole, Isoindigo, Indigo, and Quinoxalino-Phenanthrophenazine Dyes

Eichhorn, S. Holger; El-Ballouli, A. O.; Cassar, Adam Michael; Kaafarani, Bilal R. (Wiley-VCH Verlag, 2021)

The properties of organic dyes depend as much on their intermolecular interactions as on their molecular structure. While it is generally predictable what supramolecular structure would be ideal for a specific application, ...
Comparative study between supported bimetallic catalysts for nitrate remediation in water

Rachini, Mouhamad; Jaafar, Mira; Tabaja, Nabil; Tlais, Sami; Hamdan, Rasha; Al Ali, Fatima; Haidar, Ola; Lancelot, Christine; Kassem, M.; Bychkov, Eugene A.; Tidahy, Haingomalala Lucette; Cousin, Renaud; Dewaelé, Dorothée; Hamieh, T.; Toufaily, Joumana (De Gruyter Open Ltd, 2023)

As the population grows and the demand for water rises, the development of efficient and sustainable water purification techniques is becoming increasingly important to ensure access to clean and safe water in the future. ...
Comparing emergency department visits 10-year apart at a tertiary care center in Lebanon

El Zahran, Tharwat; Ghandour, Lara; Chami, Anwar; Saliba, Najat A.; Hitti, Eveline A. (Lippincott Williams and Wilkins, 2023)

Presentations to the emergency department (ED) are growing worldwide. With the increasing risk factors of non-communicable disease (NCD) and communicable diseases (CD) in low- and middle-income countries, it is crucial to ...
Comparison of atmospheric polycyclic aromatic hydrocarbon levels in three urban areas in Lebanon

Baalbaki, Rima; Nassar, Julie; Salloum, Samer; Shihadeh, Alan Louis; Lakkis, Issam A.; Saliba, Najat A. (Elsevier Ltd, 2018)

Introduction: Reports on the levels and sources of PAHs in the Middle Eastern region are very scarce and mostly outdated. This study reports for the first time the ambient levels of PAHs during summer and winter at three ...

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Browsing Department of Chemistry by Title

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