A5046461792- Graphene research and applications
- Surface Chemistry and Catalysis
- Molecular Junctions and Nanostructures
- Advanced Photocatalysis Techniques
- Surface and Thin Film Phenomena
- Graphene and Nanomaterials Applications
- TiO2 Photocatalysis and Solar Cells
- 2D Materials and Applications
- Bone Tissue Engineering Materials
- Advancements in Battery Materials
- Advanced Nanomaterials in Catalysis
- Diamond and Carbon-based Materials Research
- Magnetic and transport properties of perovskites and related materials
- Advanced Sensor and Energy Harvesting Materials
- Ferroelectric and Piezoelectric Materials
- Gas Sensing Nanomaterials and Sensors
- Ammonia Synthesis and Nitrogen Reduction
- Electrospun Nanofibers in Biomedical Applications
- Conducting polymers and applications
- Fullerene Chemistry and Applications
- Hydrogen Storage and Materials
- Supercapacitor Materials and Fabrication
- Hybrid Renewable Energy Systems
- Carbon and Quantum Dots Applications
- Electronic and Structural Properties of Oxides
University of Aveiro
2014-2023
Instituto de Ciencia de Materiales de Madrid
2013-2017
Instituto de Ciencia de Materiales de Sevilla
2015
Technika Pro Měření a Automatizaci (Czechia)
2015
Complejo Hospitalario Universitario de Santiago
2015
Consejo Superior de Investigaciones Científicas
2013
Synthesis of magnetic nanodiamond-cobalt oxide (ND-Co3O4) nanocomposite material; preparation nanofluids and estimation thermal properties such as conductivity viscosity has been explained experimentally in this paper. The material synthesized by using in-situ growth technique chemical coprecipitation between cobalt chloride sodium borohydrate. various techniques XRD, TEM, XPS VSM have used to confirm the ND Co3O4 phase nanocomposite. hybrid prepared dispersing ND-Co3O4 water, ethylene...
This study presents a novel method for the development of TiO2/reduced graphene oxide (rGO) nanocomposites photocatalytic degradation dyes in an aqueous solution. The synergistic integration rGO and TiO2, through formation Ti–O–C bonds, offers interesting opportunity to design photocatalyst nanocomposite materials with maximum absorption shift visible region spectra, where photodegradation can be activated not only UV but also part natural solar irradiation. TiO2@rGO different content have...
Graphene oxide (GO) assists a diverse set of promising routes to build bioactive neural microenvironments by easily interacting with other biomaterials enhance their bulk features or, alternatively, self-assembling toward the construction biocompatible systems specific three-dimensional (3D) geometries. Herein, we first modulate both size and available oxygen groups in GO nanosheets adjust physicochemical biological properties polycaprolactone–gelatin electrospun nanofibrous systems. The...
Surface-assisted cyclodehydrogenation and dehydrogenative polymerization of polycyclic (hetero)aromatic hydrocarbons (PAH) are among the most important strategies for bottom-up assembly new nanostructures from their molecular building blocks. Although diverse compounds have been formed in recent years using this methodology, a limited knowledge on machinery operating at nanoscale has prevented rational control reaction outcome. We show that strength PAH-substrate interaction rules...
Carbon-modified commercial anatase (KRONOClean 7000®) was quantitatively characterised with XRD for the first time – full phase composition (both crystalline and amorphous content) microstructure.
We report titania nanoheterostructures decorated with silver, exhibiting tuneable photochromic properties for the first time when stimulated only by visible white light (domestic indoor lamp), no UV wavelengths. Photochromic materials show reversible color changes under exposure. However, all inorganic nanoparticles (NPs) require to operate. Conventionally, multicolor photochromism in Ag–TiO2 films involves a change brownish-gray during UV-light irradiation (i.e., reduction of Ag+ Ag0) and...
The manipulation of the interactions between cationic amine groups from collagen and anionic carboxylic graphene oxide mediate synthesis a self-assembled hydrogel capable generate suitable 3D cellular microenvironments.
Foods with extended shelf life motivate the development of active packaging materials. The addition functional fillers to polysaccharide-based films is a promising approach. In this line, biochar-ZnO (C–ZnO) composites were obtained from sucrose and glucosamine pyrolyzed in presence ZnO particles, resulting Suc-ZnO GlcN-ZnO composites, respectively. influence different amounts (10%, 30%, 50 wt%) C–ZnO structures on properties thermoplastic starch-based was studied, demonstrating that wt%...
While high-quality defect-free epitaxial graphene can be efficiently grown on metal substrates, strong interaction with the supporting quenches its outstanding properties. Thus, protocols to transfer insulating substrates are obligatory, and these often severely impair properties by introduction of structural or chemical defects. Here we describe a simple easily scalable general methodology structurally electronically decouple from Pt(111) Ir(111) surfaces. A multi-technique characterization...
In this work we synthesized the multifunctional (La0.8Ca0.2)0.4Bi0.6FeO3 material using a sol-gel process. Structural and morphologic investigations reveal Pnma perovskite structure at room temperature with spherical polygonal nanoparticles. A detailed study of dependence dielectric electrical properties studied proves typical FE-PE transition colossal value real permittivity 350 K that allows use in energy storage devices. Thus, investigation frequency ac conductivity correlated barrier...
This study presents a systematic examination of the effects bath additives and deposition conditions on rates electrodeposition bismuth, obtained morphologies, ability bismuth films to detect trace concentrations lead. Novel morphologies are reported for first time. The comprises nitrate, nitric acid, set additives, viz., citric acid (complexant), poly(vinyl alcohol) (surface inhibitor), betaine (grain refiner). Rotating disk electrode voltammetry cyclic have been used determine mechanism...
This work presents the immobilisation of titanium dioxide (TiO2) nanoparticles (NPs) and reduced graphene oxide (rGO)-TiO2 nanocomposite on glass sheets for photocatalytic degradation methylene blue (MB) under different radiation sources such as ultraviolet simulated solar radiation. The TiO2 NPs rGO-TiO2 were synthesised through a simple hydrothermal method isopropoxide precursor followed by calcination treatment. Deposition prepared photocatalysts was performed spin-coating method....
The interaction of fullerenes with transition metal surfaces leads to the development an atomic network ordered vacancies on metal. However, structure and formation mechanism this intricate surface reconstruction is not yet understood at level. We combine scanning tunneling microscopy, high resolution temperature programmed-x-ray photoelectrons spectroscopy, density functional theory calculations show that vacancy in C60/Pt(111) a complex process which undergo two significant structural...
We present a unique remodeling of flat copper terraces induced by organic molecules. In particular, we show how metal–phthalocyanines (MPc, M = Zn and Cu) tailor the formation regular arrays Cu nanostripes on its (110) surface. The MPc mediated reshaping Cu(110) is found to involve massive reorganization adatoms, at variance with conventional changes metal reconstructions upon molecular adsorption observed so far. By combining experimental theoretical surface science techniques, reveal key...
Abstract The intrinsic atomic mechanisms responsible for electronic doping of epitaxial graphene Moirés on transition metal surfaces is still an open issue. To better understand this process we have carried out a first-principles full characterization the most representative Moiré superstructures observed Gr/Pt(111) system and confronted results with atomically resolved scanning tunneling microscopy experiments. We find that all reported relaxes inducing non-negligible corrugation both, at...