A5068766141- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced Photocatalysis Techniques
- Spectroscopy Techniques in Biomedical and Chemical Research
- Pickering emulsions and particle stabilization
- Advanced Nanomaterials in Catalysis
- Nanocluster Synthesis and Applications
- Surfactants and Colloidal Systems
- Biosensors and Analytical Detection
- Advanced biosensing and bioanalysis techniques
- Protein Interaction Studies and Fluorescence Analysis
- Copper-based nanomaterials and applications
- TiO2 Photocatalysis and Solar Cells
- Catalytic Processes in Materials Science
- Covalent Organic Framework Applications
- Gas Sensing Nanomaterials and Sensors
- Microplastics and Plastic Pollution
- Nanoparticles: synthesis and applications
- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Sulfur-Based Synthesis Techniques
- Recycling and utilization of industrial and municipal waste in materials production
- Graphene research and applications
- Advanced oxidation water treatment
- Nanomaterials for catalytic reactions
- MXene and MAX Phase Materials
Queen's University Belfast
2016-2025
East China University of Science and Technology
2022-2024
University of Ulster
2020-2021
Belfast City Hospital
2020-2021
BTG International (United Kingdom)
2018
Incorporation of plasmonic metal nanomaterials can significantly enhance the visible light response semiconductor photocatalysts via localized surface plasmon resonance (LSPR) mechanisms. However, surfaces are often covered with surfactant molecules, which is undesired when used for photocatalytic hydrogen evolution, since molecules could compromise nanomaterials' cocatalyst functionalities by blocking active sites and/or inhibiting charge transfer process. Herein, we demonstrate a method...
Pickering emulsions represent an important class of functional materials with potential applications in sustainability and healthcare. Currently, the synthesis relies heavily on use strongly adsorbing molecular modifiers to tune surface chemistry nanoparticle constituents. This approach is inconvenient potentially a dead-end for many since adsorbed prevent interactions between nanosurface its surroundings. Here, we demonstrate general modifier-free construct by using combination stabilizer...
ConspectusWhen the size of materials is reduced, their volume decreases much faster than surface area, which in most extreme case leads to 2D nanomaterials are "all surface". Since atoms at have free energies, electronic states, and mobility very different from bulk atoms, that large surface-to-volume ratios can display remarkable new properties compared counterparts. More generally, where interact with environment, turn places chemistry heart catalysis, nanotechnology, sensing applications....
The integration of oxidation and reduction half-reactions to amplify their synergy presents a considerable challenge in CO2 photoconversion. Addressing this requires the construction spatially adjacent redox sites while suppressing charge recombination at these sites. This study introduces an innovative approach that utilizes spatial enable synergistic reactions within atomic proximity employs spin polarization inhibit recombination. We incorporate Mn into Co3O4 as catalyst, which tend...
Photocatalytic reduction of carbon dioxide (CO2) presents a pivotal solution to address meteorological and ecological challenges. Currently, metal-organic frameworks (MOFs) with their crystalline porosity, adjustable structures, diverse chemical functionalities have garnered significant attention in the realm photocatalytic CO2 reduction. This review provides brief introduction MOF material applications Then, it undertakes comprehensive examination MOFs, summarizing key attributes, including...
Two-dimensional metal nanoparticle arrays are normally constructed at liquid–oil interfaces by modifying the surfaces of constituent nanoparticles so that they self-assemble. Here we present a general and facile new approach for promoting such interfacial assembly without any surface modification. The method use salts have hydrophobic ions opposite charge to nanoparticles, which sit in oil layer thus reduce Coulombic repulsion between particles organic phase, allowing close proximity each...
Nanoparticle self-assembly at water–oil interfaces has emerged as a convenient and efficient method to construct stable, active reproducible plasmonic substrates for SERS. In this review we summarize the progress that been made in field.
The interactions between aromatic molecules and metal nanoparticles are ubiquitous in nanotechnology. Currently, π-metal under ambient conditions well appreciated for VIIIB but not IB metals. Here, we demonstrate the direct probing of with molecular specificity using surface-enhanced Raman spectroscopy (SERS), which reveals that hydrocarbons adsorb strongly from solution onto surfaces Ag Au nanoparticles, provided there is no surface oxidation. Theoretical modeling shows this adsorption...
Spiky/hollow metal nanoparticles have applications across a broad range of fields. However, the current bottom-up methods for producing spiky/hollow rely heavily on use strongly adsorbing surfactant molecules, which is undesirable because these passivate product particles' surfaces. Here we report high-yield surfactant-free synthesis spiky hollow Au-Ag nanostars (SHAANs). Each SHAAN composed >50 spikes attached to ca. 150 nm diameter cubic core, makes SHAANs highly plasmonically and...
2-Dimensional (2D) graphitic carbon nitrate (g-C3N4) nanosheets are particularly interesting photocatalytic materials because of their large surface area and excellent photoelectric properties. However, it remains challenging to synthesize 2D g-C3N4 with high yield activity simultaneously. In this work, a urea-assisted one-pot method was developed in which the decomposition urea released NH3 gas exfoliated bulk into thin generated pores wrinkles on surface. The product therefore possessed...
Au/Ag colloids aggregated with simple salts are amongst the most commonly used substrates in surface-enhanced (resonance) Raman spectroscopy (SE(R)RS). However, salt-induced aggregation is a dynamic process, which means that SE(R)RS enhancements vary time and measurements therefore need to be taken at fixed point, normally within short time-window of few minutes. Here, we present an emulsion templated method allows formation densely-packed quasi-spherical colloidal aggregates. Since...
Abstract Self‐assembly of colloidal nanoparticles at water–oil interfaces offers an efficient way to construct multi‐dimensional arrays. is generally induced by using adsorbing molecular “modifiers” or co‐solvents remove the nanoparticles' surface charge. Here, it shown that cetyltrimethylammonium bromide (CTAB), which commonly used in bulk quantities synthesis, can induce self‐assembly negatively charged interfaces, even sub‐micromolar levels but does this providing charge screening rather...
Efficient electron transfer between metallic active centers and cocatalysts is vital for sustainable catalysis. This work demonstrates a strategy using the dynamic contraction–rebound of hydrogels to promote valence switch metal ions in Fenton reactions. The key utilize low-valent Fe(II) cross-link an alginate hydrogel network embedded with reducing nanoparticles, forming macroporous structure composed domains centered around nanoparticles. contracts when Fe(III) forms upon introduction...
Abstract Mechanochemistry has developed rapidly in recent years for efficient chemicals and materials synthesis. Twin screw extrusion (TSE) is a particularly promising technique this regard because of its continuous scalable nature. A key aspect TSE that it provides high shear mixing. Because the shear, potentially also offers way to delaminate 2‐D materials. Indeed, synthesis manor remains challenge their industrialization. Here, as proof‐of‐principle, automated, mechanochemical exfoliation...
Inverse-opal structured Pt/TiO 2 –MnO y shows enhanced toluene degradation activity due to its porous microstructure and the presence of Pt, which allows for more efficient generation active species activation catalyst re-oxidation.
Abstract The incorporation of defects and cocatalysts is known to be effective in improving photocatalytic activity, yet their coupled contribution the hydrogen evolution process has not been well‐explored. In this study, We demonstrate that S vacancies NiSe can contribute improvement charge separation efficiency via formation a strong electric field within bulk ZnIn 2 4 (ZIS) on its surface. More importantly, also synergy benefits overall activity by facilitating H O adsorption dissociation...