A5000649669- Graphene research and applications
- MXene and MAX Phase Materials
- Boron and Carbon Nanomaterials Research
- 2D Materials and Applications
- Electrochemical sensors and biosensors
- Covalent Organic Framework Applications
- Luminescence and Fluorescent Materials
- Metal-Organic Frameworks: Synthesis and Applications
- Carbon Nanotubes in Composites
- Diamond and Carbon-based Materials Research
- Conducting polymers and applications
- Electrochemical Analysis and Applications
- Integrated Circuits and Semiconductor Failure Analysis
- Advanced Memory and Neural Computing
- Fullerene Chemistry and Applications
- Graphite, nuclear technology, radiation studies
- Electrocatalysts for Energy Conversion
- Polymer composites and self-healing
- Carbon Dioxide Capture Technologies
- Advanced biosensing and bioanalysis techniques
- Pigment Synthesis and Properties
- Thermal properties of materials
- Ferroelectric and Piezoelectric Materials
- Layered Double Hydroxides Synthesis and Applications
- Ionic liquids properties and applications
University of Toronto
2022-2025
Universidade Federal do Rio Grande do Sul
2016-2024
Materials Science & Engineering
2024
University of New Brunswick
2023
2D materials are well-known for their low-friction behavior by modifying the interfacial forces at atomic surfaces. Of wide range of materials, MXenes represent an emerging material class but lubricating has been scarcely investigated. Herein, friction mechanisms Ti3C2Tx demonstrated which attributed to surface terminations. We find that do not exhibit frictional layer dependence other materials. Instead, nanoscale lubricity is governed termination species resulting from synthesis. Annealing...
Due to the strong in-plane but weak out-of-plane bonding, it is relatively easy separate nanosheets of two-dimensional (2D) materials from their respective bulk crystals. This exfoliation 2D can yield large nanosheets, hundreds micrometers wide, that be as thin one or a few atomic layers thick. However, underlying physical mechanisms unique each technique produce wide distribution defects, yields, functionalization, lateral sizes, and thicknesses, which appropriate for specific end...
Two-dimensional (2D) films of conjugated porous organic polymers (C-POPs) can translate the rich in-plane functionalities frameworks into diverse optical and electronic applications while addressing processability issues their crystalline analogs for adaptable device architectures. However, lack facile single-step synthetic routes to obtain large-area high-quality 2D-C-POPs has limited application possibilities so far. Here, we report synthesis four mechanically robust imine-linked 2D-C-POP...
The requirement of concentrated carbon dioxide (CO2 ) feedstock significantly limits the economic feasibility electrochemical CO2 reduction (eCO2 R) which often involves multiple intermediate processes, including capture, energy-intensive regeneration, compression, and transportation. Herein, a bifunctional gas diffusion electrode (BGDE) for separation eCO2 R from low-concentration stream is reported. BGDE demonstrated selective production ethylene (C2 H4 by combining...
Abstract Nanoarchitected materials are at the frontier of metamaterial design and have set benchmark for mechanical performance in several contemporary applications. However, traditional nanoarchitected designs with conventional topologies exhibit poor stress distributions induce premature nodal failure. Here, using multi‐objective Bayesian optimization two‐photon polymerization, optimized carbon nanolattices an exceptional specific strength 2.03 MPa m 3 kg −1 low densities <215 −3...
Abstract Structural design of 2D conjugated porous organic polymer films (2D CPOPs), by tuning linkage chemistries and pore sizes, provides great adaptability for various applications, including membrane separation. Here, four free‐standing CPOP imine‐ or hydrazone‐linked polymers (ILP/HLP) in combination with benzene (B‐ILP/HLP) triphenylbenzene (TPB‐ILP/HLP) aromatic cores are synthesized. The anisotropic disordered films, composed polymeric layered structures, can be exfoliated into...
Carbon nanothreads (NTs) are ultrathin materials synthesized by solid-state reaction of crystalline benzene or pyridine under high pressure. Recent experimental studies show that the sp2–sp3 conversion in C–C C–N bonds toward NT formation is not always complete, typically resulting samples constituted a mixture both partially and fully saturated structures. The objective this study to use density functional theory calculations compute mechanical electronic properties carbon nitride analyze...
Understanding wear, a critical factor impacting the reliability of mechanical systems, is vital for nano-, meso-, and macroscale applications. Due to complex nature nanoscale behavior nanomaterials such as two-dimensional materials under cyclic wear their surface damage mechanism yet unexplored. In this study, we used atomic force microscopy coupled with molecular dynamic simulations statistically examine monolayer graphene, MoS2, WSe2. We show that graphene displays exceptional durability...
Structural, mechanical and electronic properties of carbon nanothreads derived from five-membered ring heterocyclic compounds are presented discussed, demonstrating their enhanced stability promising set features.
Two-dimensional (2D) rigid polymers provide an opportunity to translate the high-strength, high-modulus mechanical performance of classic rigid-rod 1D across a plane by extending covalent bonding into two dimensions while simultaneously reducing density due microporosity structural design. Thus far, this potential has remained elusive because challenge producing high-quality 2D polymer thin films, particularly those with irreversible, benzazole linkages. Here, we present facile two-step...
In this study, we propose two new 2D phosphorene allotropes, ϕ-P and σ-P, use density functional theory calculations to explore their structural, electronic, mechanical properties. The atomic structure of is derived from phagraphene, a carbon allotrope recently discovered using evolutionary algorithms. phase converted into σ-P by pair Stone-Wales-like transformations, both are thermally mechanically stable, similarly other predicted allotropes. Nudged elastic band show that the materials can...
A nanocomposite of indigo carmine doped polypyrrole/silver nanoparticles was obtained by a one-step electrochemical process. The characterized scanning electron microscopy, infrared spectroscopy, ultraviolet-visible-near and cyclic voltammetry. simple process allowed the growth silver during polymerization polypyrrole, resulting in films with electrochromic behavior improved electroactivity. In addition, polypyrrole chains were found to present longer conjugation length than pristine films.
Carbon nanothread-derived nanomeshes are highly flexible two-dimensional (2D) structures with tunable pore size and shape, which allows fine control of their transport properties when applied as membranes. In this work, we use molecular dynamics simulations to investigate the performance several nanomesh membranes for water desalination through reverse osmosis. Results show that these can operate in a wide range flow rate, an optimal point yields 100% NaCl rejection permeability high 106...
The development of efficient advanced functional materials is highly dependent on properties such as morphology, crystallinity, and surface functionality. In this work, hierarchical flowerlike nanostructures SrTiO
Hexagonal boron nitride (h-BN) is brittle, however, its atomic-scale structural engineering can lead to unprecedented physical properties. Here we report the bulk synthesis of high-density crystalline h-BN solids by using high-temperature spark plasma sintering (SPS) micron size powders. In addition high mechanical strength and ductile response such materials, have obtained anomalous values dielectric constant beyond theoretical limits, thermal conductivity, exceptional neutron radiation...
Non-van der Waals two-dimensional materials containing exposed transition metal atoms are promising catalysts for green energy storage and conversion. For instance, hematene ilmenene have been successfully applied as catalysts. Building on these reports, this work is the first investigation of recently synthesized magnetene towards Oxygen Evolution Reaction (OER) Reduction (ORR). Using Density Functional Theory (DFT) calculations, we unveil mechanism, performance ideal conditions OER ORR...
Abstract In the search for clean energy technologies, it is crucial to develop low‐cost batteries with enhanced performance, and 2D materials are promising electrode applications owing their high surface area where fast ionic diffusion can occur. this work, density functional theory calculations that demonstrate great potential of recently synthesized pyrite as a battery reported. An extensive analysis its performance toward Li‐ion post‐lithium technologies (Na, K, Mg, Ca, Zn, Al), well how...