A5079977308- Advanced Photocatalysis Techniques
- Hydrogels: synthesis, properties, applications
- TiO2 Photocatalysis and Solar Cells
- Clay minerals and soil interactions
- Nanocomposite Films for Food Packaging
- Bone Tissue Engineering Materials
- Electrospun Nanofibers in Biomedical Applications
- Essential Oils and Antimicrobial Activity
- Advanced Nanomaterials in Catalysis
- Therapeutic Uses of Natural Elements
- Polymer-Based Agricultural Enhancements
- Nanoparticles: synthesis and applications
- Wound Healing and Treatments
- Conducting polymers and applications
- Graphene and Nanomaterials Applications
- Agricultural and Food Sciences
- Polysaccharides Composition and Applications
- Food composition and properties
- Antibiotics Pharmacokinetics and Efficacy
- Concrete and Cement Materials Research
- Surgical Sutures and Adhesives
- ZnO doping and properties
- Quantum Dots Synthesis And Properties
- Adsorption and biosorption for pollutant removal
- Multiferroics and related materials
Universidade Federal do Piauí
2014-2025
Agricultural production is influenced by the water content in soil and availability of fertilizers. Thus, superabsorbent hydrogels, based on polyacrylamide, natural cashew tree gum (CG) potassium hydrogen phosphate (PHP), as fertilizer releaser were developed. The structure, morphology, thermal stability chemical composition samples polyacrylamide hydrogels with presence (HCGP) without (HCG) investigated, using X-ray diffractometry (XRD), Fourier Transformed Infrared Spectroscopy (FTIR),...
The buriti oil (Mauritia flexuosa L.) can be associated with polymeric matrices for biomedical applications. This study aimed to evaluate the effect of chitosan gel (CG) (CGB) as a healing agent. fatty acids and volatile compounds composition were performed composite gels characterized using FTIR thermal analysis. Biological tests including antimicrobial, antioxidant, anti-inflammatory effects also investigated. Buriti is composed oleic palmitic acids, main identified. did not show...
A nanocomposite hydrogel has potentially applicability in the induction of osteogenesis. The was synthesized using 1% gelatin methacrylate (GelMA), a biodegradable and bioactive polymer containing structure gelatin, denatured collagen derived from extracellular bone matrix, 6% laponite (Lap), synthetic phyllosilicate nanosized particles. Initially, 0.6 g Lap added to deionized water, then solution GelMA/Igarcure under stirring UV light for crosslinking. spectra Fourier-transform infrared...
Hydrogels from natural sources are attracting increasing interest due to their ability protect biologically active molecules. Starch extracted cassava tubers is a promising material for synthesizing these hydrogels. Copolymerization of gum and incorporation chlorhexidine digluconate (CLX) into the hydrogels confirmed by changes in crystallographic profile, as observed through X-ray diffraction, shift 1000 cm
The increasing contamination of water resources by pharmaceutical compounds, such as Tetracycline (TC), has been a significant environmental concern due to the problems it can cause humans and environment. This study addressed effectiveness TC removal through an efficient approach that combines adsorption photocatalysis, using Cerium-doped TiO2 Sepiolite (Sep) nanocomposites supporting material. wt % Ce was varied (0, 1, 2.5, 5%), designating samples TiO2–Sep, 1CeTiO2–Sep, 2.5CeTiO2–Sep,...
Chicha gum is a natural polymer obtained from the Sterculia striata plant. The hydroxyl groups of its structure have chemical affinity to form hydrogels, which favors association with biologically active molecules, such as nerolidol. This improves biological properties and allows material be used in drug delivery systems. hydrogels associated nerolidol were produced at two concentrations: 0.01 0.02 g mL−1. Then, characterized by thermogravimetry (TG), Fourier Transform Infrared spectroscopy...
High charge swelling micas are layered silicates used in adsorption of several inorganic and organic species. In this study, we evaluated the chlorhexidine digluconate on highly mica Na-mica-4. Drug release antibacterial action against Staphylococcus aureus (S. aureus) Escherichia coli (E. coli) using direct contact test for mica/chlorhexidine hybrids were evaluated. The characterized X-ray diffraction, Fourier transform infrared spectroscopy, zeta potential measurements, CHN elemental...
Here, the present work aimed to investigate wettability of sodium titanate nanotubes films and evaluate antibacterial activity powder under light bacterial adhesion assay. The were deposited by electrophoretic deposition technique on FTO glass synthesized via microwave-assisted hydrothermal. Raman analysis, X-ray Diffraction, Scanning Electron Microscopy confirmed nanotubes. Atomic Force showed that roughness is superior FTO. water contact angle decreases from 37.85° (clean FTO) 9.53° after...
TiO2/Karaya composite was synthesized by the sol-gel method for photoinactivation of pathogens. This is first time that we have reported this an antimicrobial approach. The structure, morphology, and optical properties were characterized X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-rays (EDS), Fourier transform infrared spectroscopy (FTIR), diffuse reflectance, surface area BET method. XRD EDS results showed successfully stabilized crystal structure pore...