Qatar University Institutional Repository: Recent submissions
Now showing items 1361-1380 of 28783
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Flexible piezoelectric nanogenerator based on [P(VDF-HFP)]/ PANI-ZnS electrospun nanofibers for electrical energy harvesting
( Springer , 2021 , Article)Abstract: Over the past decade, piezoelectric nanogenerator have attracted much attention to harvest mechanical energy from abundant resources in nature. Here, the ZnS microspheres is prepared by hydrothermal method and ... -
A Meta-Analysis to Gauge the Effectiveness of STEM Informal Project-Based Learning: Investigating the Potential Moderator Variables
( Springer Science and Business Media B.V. , 2023 , Article Review)In recent decades, informal project-based learning (PjBL) for science, technology, engineering, and mathematics (STEM) education has gained immense significance. Though some meta-analytical studies have reported the ... -
A review of advances in the preparation and application of polyaniline based thermoset blends and composites
( Springer , 2020 , Article Review)For several decades, forming blend and composite of polyaniline (PANI) with insulating polymers has been a widely studied research area because of the potential applications of such blends, which have a unique combination ... -
Advances in blends preparation based on electrically conducting polymer
( Springer Nature , 2019 , Article)This work presents an extensively detailed study on preparation and performance of four different hydrochloric acid-doped polyaniline (PANI) blends. The blends are obtained by changing four different polymers, viz. polyvinyl ... -
Keratin for potential biomedical applications
( Elsevier , 2022 , Book chapter)Keratin is a cysteine-rich fibrous protein. As a structural protein, keratin represents the major constituent in the appendageal structures conferring their structural features. Being copiously available in nature as a ... -
Recycling of polymer-polymer composites
( Elsevier , 2017 , Book chapter)Polymers are inexpensive, lightweight, and durable materials derived from the petroleum industry that are easily molded into a variety of commodities that are used in a wide range of applications. Consequently, polymer ... -
Determination of midodrine hydrochloride via Hantzsch condensation reaction: A factorial design based spectrophotometric approach
( Royal Society of Chemistry , 2015 , Article)A set of experimental designs was executed to attain the optimal reaction parameters of chemical derivatization of midodrine hydrochloride (MD·HCl) in oral formulas via a Hantzsch condensation reaction. The process variables, ... -
n-InAs based photo-thermo-electrochemical cells for conversion of solar to electrical energy
( Elsevier , 2016 , Article)This paper presents the photo-thermo-electrochemical (PEC) response of various combinations of the n-type indium arsenide (n-InAs) photo-electrode with different counter electrodes, i.e., Ag, Al, Cu, Pb, Zn and ITO. The ... -
The Effect of Temperature on Inorganic Electron Transport Materials in HTM-Free Carbon-based PSCs
( Institute of Electrical and Electronics Engineers Inc. , 2024 , Conference Paper)Carbon electrode-based perovskite solar cells (c-PSCs) have attracted significant attention due to their cost-effectiveness and simplified structure, particularly when devoid of a hole transport material. However, the ... -
Influence of polyolefin modified by Y2O3 as protective coatings against carbon steel corrosion into 3.5% NaCl media
( Springer , 2023 , Article)In this research work, we have studied the impact of Yttrium nanoparticles loaded with corrosion inhibitors dodecylamine (DOC) incorporated in polyolefin for the corrosion protection of steel. The surface analysis of pure ... -
Cost estimation of synthesis and utilization of nano-adsorbents on the laboratory and industrial scales: A detailed review
( Elsevier , 2023 , Article Review)The recent regulations pertaining to the circular economy have unlocked new prospects for researchers. In contrast to the unsustainable models associated with the linear economy, integration of concepts of circular economy ... -
A STEM model for engaging students in environmental sustainability programs through a problem-solving approach
( Routledge , 2023 , Article)This study exemplifies a STEM model for engaging students in environmental sustainability programs through a problem-solving approach. The study employed a mixed-method approach incorporating 346 elementary students. The ... -
Investigating the individual interests of undergraduate students in STEM disciplines
( Frontiers Media SA , 2024 , Article)Despite massive investments in the education sector to empower youth in Qatar, a vital concern remains to retain students in science, technology, engineering, and mathematics (STEM) disciplines at the undergraduate level. ... -
Mechanical and corrosion characteristics of TiC reinforced Ni-P based nanocomposite coatings
( Elsevier , 2023 , Article)The requirement for effective corrosion protection and better mechanical properties in various industries employing metal components has led to the growth of nickel (Ni)-based metallic coatings. The electroless-synthesized ... -
Engineering the structural, optical and photoelectrochemical properties of BaTiO3-CoFe2O4 nanocomposite for photoelectrochemical water splitting
( Elsevier , 2023 , Article)Water splitting in the presence of semiconductor photocatalyst under sunlight illumination is one of the potential methods to produce clean hydrogen fuel. Herein, a BaTiO3-CoFe2O4 composite photocatalyst was fabricated ... -
Role of pedagogical approaches in fostering innovation among K-12 students in STEM education
( Elsevier , 2024 , Article Review)The intricate challenges of the modern world demand students to be equipped with advanced skills and knowledge to thrive in an increasingly competitive global landscape. Science, technology, engineering, and mathematics ... -
Spectroscopy characterizations of nanoscale polymer-based coatings
( Elsevier , 2023 , Book chapter)Nanoscale polymer-based coatings have become center of importance in present day's materials research. Because of their unique properties, such as less weight, ductility, and ease of manufacture, polymer-based films are ... -
Nanotechnology in decontamination
( Elsevier , 2018 , Book chapter)Currently, accessibility of clean water is one of the biggest challenges faced by international society. The emerging field of nanotechnology and its applications has great potential for providing sustainable solutions to ... -
Pit initiation mechanism of modified martensitic 13Cr stainless steel exposed to CO2 saturated acidic environments at elevated temperatures induced by Ti(C,N) inclusions
( Elsevier , 2024 , Article)The influence of temperature (25, 75, and 150 °C) on the passivation behavior of Modified Martensitic 13Cr Stainless Steel (M13Cr) in CO2 saturated acidic salt brine environments was investigated. The material was found ... -
Capacitive type humidity sensor based on PANI decorated Cu-ZnS porous microspheres
( Elsevier , 2020 , Article)Porous microstructure materials are considered good candidates for the development of highly sensitive and fast humidity sensors. In this regard, we prepared polyaniline (PANI) decorated Cu-ZnS porous microsphere structures ...