Sarah A. Tolba

ORCID: 0000-0001-9664-5716
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About
Contact & Profiles
Research Areas
  • Advanced Photocatalysis Techniques
  • Conducting polymers and applications
  • ZnO doping and properties
  • Perovskite Materials and Applications
  • Organic Electronics and Photovoltaics
  • Gas Sensing Nanomaterials and Sensors
  • Advanced Chemical Physics Studies
  • Machine Learning in Materials Science
  • Copper-based nanomaterials and applications
  • Fuel Cells and Related Materials
  • Catalytic Processes in Materials Science
  • Nanomaterials for catalytic reactions
  • Surface Modification and Superhydrophobicity
  • Ga2O3 and related materials
  • Chemical Thermodynamics and Molecular Structure
  • Quantum Dots Synthesis And Properties
  • Advanced battery technologies research
  • Polymer crystallization and properties
  • Laser-Ablation Synthesis of Nanoparticles
  • Gold and Silver Nanoparticles Synthesis and Applications
  • Inorganic Fluorides and Related Compounds
  • Adsorption and biosorption for pollutant removal
  • Spectroscopy and Quantum Chemical Studies
  • Mercury impact and mitigation studies
  • Electrocatalysts for Energy Conversion

North Dakota State University
2022-2025

Institute for Computational Science and Technology
2025

Dakota State University
2025

American University in Cairo
2006-2024

New Cairo Academy
2018

Southwest University
2006

Platinum (Pt)-based-nanomaterials are currently the most successful catalysts for oxygen reduction reaction (ORR) in electrochemical energy conversion devices such as fuel cells and metal-air batteries. Nonetheless, Pt have serious drawbacks, including low abundance nature, sluggish kinetics, very high costs, which limit their practical applications. Herein, we report first rationally designed nonprecious Co–Cu bimetallic metal–organic framework (MOF) using a low-temperature hydrothermal...

10.1021/jacs.1c01096 article EN Journal of the American Chemical Society 2021-03-04

Tuning the optoelectronic properties of donor-acceptor conjugated polymers (D-A CPs) is great importance in designing various organic devices. However, there remains a critical challenge precise control bandgap through synthetic approach, since chain conformation also affects molecular orbital energy levels. Here, D-A CPs with different acceptor units are explored that show an opposite trend band gaps increasing length oligothiophene donor units. By investigating their and energy, it found...

10.1002/adma.202302178 article EN cc-by-nc-nd Advanced Materials 2023-06-15

Using density functional theory, our study unravels how the charge distribution and zwitterionic units affect hydration of polymers, paving way for materials-by-design anti-icing polymers via molecular engineering.

10.1039/d3me00020f article EN cc-by-nc Molecular Systems Design & Engineering 2023-01-01

The prevention of ice formation and accumulation on solid surfaces presents a significant challenge across various engineering technological domains. Recent advancements in aqueous self-lubricating coatings have garnered considerable attention due to their promising anti-icing performance. These effectively reduce formation, offering potential solutions for applications. Our study focuses the hydration neutral polymers, providing insights into water-polymer interactions at molecular level....

10.1021/acs.langmuir.4c05005 article EN Langmuir 2025-03-02

Monoclinic ZrO2 has recently emerged as a new highly efficient material for the photovoltaic and photocatalytic applications. Herein, first-principles calculations were carried out to understand how Hydrogen doping can affect electronic structure optical properties of material. The effects interstitial substitutional at different sites concentrations in m-ZrO2 examined by an extensive model study predict best with optimal use solar energy conversion devices. interstitials (Hi) pristine found...

10.1038/s41598-019-46778-5 article EN cc-by Scientific Reports 2019-07-15

The optoelectronic properties of a given conjugated polymer depend on the chain rigidity and more importantly local planarity. backbone planarity determines conjugation length as large twists result in break conjugation.

10.1039/d2ta09389h article EN Journal of Materials Chemistry A 2023-01-01

There is a growing need for new techniques to synthesize metallic copper nanoparticles due their remarkable use in many advanced technologies. Herein, novel method stable and nonagglomerated zero-valent (ZVCNPs) via the situ formation of reduced graphene oxide (rGO) during electrospinning process presence polyvinylpyrrolidone as carbon source presented. X-ray diffraction, Raman spectroscopy, electron paramagnetic resonance, transmission microscopy, photoelectron spectroscopy were used...

10.1021/acssuschemeng.8b04219 article EN ACS Sustainable Chemistry & Engineering 2018-10-24

Water scarcity continues to be a major worldwide issue. Therefore, from scientific perspective, it is crucial develop highly effective, affordable, environmentally friendly, and readily available metal-based adsorbent for wastewater treatment. This study focuses on synthesizing mesoporous/nanosphere TiO2 using free-template eco-friendly method effectively remove Reactive Black 5 (RB5) dye. The synthesis of nanospheres was achieved through the use titanium isopropoxide at 100 °C 12 h in...

10.3390/pr12122786 article EN Processes 2024-12-06

Black TiO2 is being widely investigated due to its superior optical activity and potential applications in photocatalytic hydrogen generation. Herein, the limitations of hydrogenation process nanostructures are unraveled by exploiting fundamental tradeoffs affecting overall efficiency water splitting process. To control nature concentration defect states, different reduction rates applied sub-100 nm nanotubes, chosen primarily for their superiority over long counterparts. X-Ray Photoelectron...

10.1039/c7cp08629f article EN Physical Chemistry Chemical Physics 2018-01-01

The development of efficient photoelectrodes via defect engineering wide-band gap metal oxides has been the prime focus for many years. Specifically, effect carbon defects in on their performance photoelectrochemical (PEC) applications raised numerous controversies and still elusive. Herein, various m-ZrO2 was investigated using density functional theory to probe thermodynamic, electronic, optical properties defective structures against pristine m-ZrO2. formation energies revealed that...

10.48550/arxiv.2009.03674 preprint EN other-oa arXiv (Cornell University) 2020-01-01
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