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Articles 1 - 7 of 7
Full-Text Articles in Engineering
Desirable Candidates For High-Performance Lead-Free Organic–Inorganic Halide Perovskite Solar Cells, Sajid Sajid, Salem Alzahmi, Imen Ben Salem, Nouar Tabet, Yousef Haik, Ihab M. Obaidat
Desirable Candidates For High-Performance Lead-Free Organic–Inorganic Halide Perovskite Solar Cells, Sajid Sajid, Salem Alzahmi, Imen Ben Salem, Nouar Tabet, Yousef Haik, Ihab M. Obaidat
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Perovskite solar cells (PSCs) are currently demonstrating tremendous potential in terms of straightforward processing, a plentiful supply of materials, and easy architectural integration, as well as high power conversion efficiency (PCE). However, the elemental composition of the widely utilized organic–inorganic halide perovskites (OIHPs) contains the hazardous lead (Pb). The presence of Pb in the PSCs is problematic because of its toxicity which may slow down or even impede the pace of commercialization. As a backup option, the scientific community has been looking for non-toxic/less-toxic elements that can replace Pb in OIHPs. Despite not yet matching the impressive results of Pb-containing …
Effect Of Blending Of Medium-Temperature Phase Change Material On The Bitumen Storage Heat, Loubna Najemi, Imane Belyamani, Mohsine Bouya
Effect Of Blending Of Medium-Temperature Phase Change Material On The Bitumen Storage Heat, Loubna Najemi, Imane Belyamani, Mohsine Bouya
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This study aims to investigate the feasibility of using D-Mannitol as a phase-change material (PCM) to increase the energy storage capacity and improve the thermomechanical characteristics of the modified bitumen. D-mannitol (Dm) was incorporated into Bitumen (Bm) using a high-speed shearing method. The results showed that the integration of PCM enhanced the physical characteristics of the basic bitumen, with the modified bitumen having a melting point close to that of D-mannitol (Tm = 164 °C). The D-mannitol was found to crystallize during cooling, indicating that it can store or release heat in the latent form. The specific heat capacity of …
Lead-Free Perovskite Homojunction-Based Htm-Free Perovskite Solar Cells: Theoretical And Experimental Viewpoints, Sajid Sajid, Salem Alzahmi, Imen Ben Salem, Jongee Park, Ihab M. Obaidat
Lead-Free Perovskite Homojunction-Based Htm-Free Perovskite Solar Cells: Theoretical And Experimental Viewpoints, Sajid Sajid, Salem Alzahmi, Imen Ben Salem, Jongee Park, Ihab M. Obaidat
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Simplifying the design of lead-free perovskite solar cells (PSCs) has drawn a lot of interest due to their low manufacturing cost and relative non-toxic nature. Focus has been placed mostly on reducing the toxic lead element and eliminating the requirement for expensive hole transport materials (HTMs). However, in terms of power conversion efficiency (PCE), the PSCs using all charge transport materials surpass the environmentally beneficial HTM-free PSCs. The low PCEs of the lead-free HTM-free PSCs could be linked to poorer hole transport and extraction as well as lower light harvesting. In this context, a lead-free perovskite homojunction-based HTM-free PSC was …
Recent Progress In Two Dimensional Mxenes For Photocatalysis: A Critical Review, Tahir Haneef, Kashif Rasool, Jibran Iqbal, Rab Nawaz, Muhammad Raza Ul Mustafa, Khaled A Mahmoud, Tapati Sarkar, Asif Shahzad
Recent Progress In Two Dimensional Mxenes For Photocatalysis: A Critical Review, Tahir Haneef, Kashif Rasool, Jibran Iqbal, Rab Nawaz, Muhammad Raza Ul Mustafa, Khaled A Mahmoud, Tapati Sarkar, Asif Shahzad
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Transition metal carbides and nitrides, generally known as MXenes have emerged as an alternative to improve photocatalytic performance in renewable energy and environmental remediation applications because of their high surface area, tunable chemistry, and easily adjustable elemental compositions. MXenes have many interlayer groups, surface group operations, and a flexible layer spacing that makes them ideal catalysts. Over 30 different members of the MXenes family have been explored and successfully utilized as catalysts. Particularly, MXenes have achieved success as a photocatalyst for carbon dioxide reduction, nitrogen fixation, hydrogen evolution, and photochemical degradation. The structure of MXenes and the presence of hydrophilic …
Single-Walled Carbon Nanotubes Inhibit Trpc4-Mediated Muscarinic Cation Current In Mouse Ileal Myocytes, Lina T. Al Kury, Dimitrios Papandreou, Vasyl V. Hurmach, Dariia O. Dryn, Mariia I. Melnyk, Maxim O. Platonov, Yuriy I. Prylutskyy, Uwe Ritter, Peter Scharff, Alexander V. Zholos
Single-Walled Carbon Nanotubes Inhibit Trpc4-Mediated Muscarinic Cation Current In Mouse Ileal Myocytes, Lina T. Al Kury, Dimitrios Papandreou, Vasyl V. Hurmach, Dariia O. Dryn, Mariia I. Melnyk, Maxim O. Platonov, Yuriy I. Prylutskyy, Uwe Ritter, Peter Scharff, Alexander V. Zholos
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Single-walled carbon nanotubes (SWCNTs) are characterized by a combination of rather unique physical and chemical properties, which makes them interesting biocompatible nanostruc-tured materials for various applications, including in the biomedical field. SWCNTs are not inert carriers of drug molecules, as they may interact with various biological macromolecules, including ion channels. To investigate the mechanisms of the inhibitory effects of SWCNTs on the muscarinic receptor cation current (mICAT), induced by intracellular GTPγs (200 µM), in isolated mouse ileal myocytes, we have used the patch-clamp method in the whole-cell configuration. Here, we use molecular docking/molecular dynamics simulations and direct patch-clamp recordings of …
Design Of Hybrid Pah Nanoadsorbents By Surface Functionalization Of Zro2 Nanoparticles With Phosphonic Acids, Nadine Bou Orm, Thomas Grea, Marwa Hamandi, Alexandre Lambert, Florent Lafay, Emmanuelle Vulliet, Stephane Daniele
Design Of Hybrid Pah Nanoadsorbents By Surface Functionalization Of Zro2 Nanoparticles With Phosphonic Acids, Nadine Bou Orm, Thomas Grea, Marwa Hamandi, Alexandre Lambert, Florent Lafay, Emmanuelle Vulliet, Stephane Daniele
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This study focuses on the preparation of innovative nanocomposite materials based on surface modification of commercial nano-ZrO2 optimized from Bronsted acid-base surface reactions. This surface modification was carried out by direct grafting of suitable phosphonic acids bearing a vinylic or phenylic substituent in aqueous solution. Different loading quantities of the anchoring organophosphorus compounds were applied for each materials synthesis. The resulting nanohybrids were thoroughly characterized by infrared spectroscopy (DRIFT), solid-state nuclear magnetic resonance (NMR), nitrogen adsorption-desorption (BET), thermogravimetric analysis (TG), and X-ray photoelectron spectroscopy (XPS), demonstrating the reliability and efficient tunability of the surface functionalization based on the starting Zr/P …
Upshot Of Heterogeneous Catalysis In A Nanofluid Flow Over A Rotating Disk With Slip Effects And Entropy Optimization Analysis, Muhammad Ramzan, Saima Riasat, Jae Dong Chung, Yu-Ming Chu, M. Sheikholeslami, Seifedine Kadry, Fares Howari
Upshot Of Heterogeneous Catalysis In A Nanofluid Flow Over A Rotating Disk With Slip Effects And Entropy Optimization Analysis, Muhammad Ramzan, Saima Riasat, Jae Dong Chung, Yu-Ming Chu, M. Sheikholeslami, Seifedine Kadry, Fares Howari
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The present study examines homogeneous (HOM)–heterogeneous (HET) reaction in magnetohydrodynamic flow through a porous media on the surface of a rotating disk. Preceding investigations mainly concentrated on the catalysis for the rotating disk; we modeled the impact of HET catalysis in a permeable media over a rotating disk with slip condition at the boundary. The HOM reaction is followed by isothermal cubic autocatalysis, however, the HET reactions occur on the surface governed by first-order kinetics. Additionally, entropy minimization analysis is also conducted for the envisioned mathematical model. The similarity transformations are employed to convert the envisaged model into a non-dimensional …