A5085248092- Advanced Photocatalysis Techniques
- Catalysts for Methane Reforming
- TiO2 Photocatalysis and Solar Cells
- Catalytic Processes in Materials Science
- Nanomaterials for catalytic reactions
- ZnO doping and properties
- Copper-based nanomaterials and applications
- Catalysis and Hydrodesulfurization Studies
- Catalysis and Oxidation Reactions
- Advanced oxidation water treatment
- Adsorption and biosorption for pollutant removal
- Catalysis for Biomass Conversion
- Hydrogen Storage and Materials
- Advanced Nanomaterials in Catalysis
- Gas Sensing Nanomaterials and Sensors
- Electrocatalysts for Energy Conversion
- Pharmaceutical and Antibiotic Environmental Impacts
- Covalent Organic Framework Applications
- Electrospun Nanofibers in Biomedical Applications
- Nanoparticles: synthesis and applications
- Magneto-Optical Properties and Applications
- Quantum Dots Synthesis And Properties
- Graphene research and applications
- Metal-Organic Frameworks: Synthesis and Applications
- Anodic Oxide Films and Nanostructures
Universidade Federal de Pernambuco
2014-2024
Universidade Federal Rural de Pernambuco
2023-2024
Weatherford College
2024
Universidade de São Paulo
2020
University of the Basque Country
2007-2013
This work adopted a green synthesis route using cashew tree gum as mediating agent to obtain Ni-doped ZnO nanoparticles through the sol–gel method. Structural analysis confirmed formation of hexagonal wurtzite phase and distortions in crystal lattice due inclusion Ni cations, which increased average crystallite size from 61.9 nm 81.6 nm. These resulted growth point defects structure, influenced samples’ optical properties, causing slight reductions band gaps significant increases Urbach...
Ibuprofen (IBU) is one of the most-sold anti-inflammatory drugs in world, and its residues can reach aquatic systems, causing serious health environmental problems. Strategies are used to improve photocatalytic activity zinc oxide (ZnO), thosethat involvethe inclusion metalhave received special attention. The aim this work was investigate influence parameters toxicity a photoproduct using that contains cerium (ZnO-Ce) for photodegradation ibuprofen. include photocatalyst concentration (0.5,...
In this work, a ZnO hemisphere-like structure co-doped with Er and Cr was obtained by the co-precipitation method for photocatalytic applications. The dopant’s effect on lattice investigated using X-ray diffraction, Raman, photoluminescence, UV-Vis scanning electron microscopy/energy dispersive spectroscopy techniques. response of material analyzed methylene blue (MB) as model pollutant under UV irradiation. wurtzite Zn0.94Er0.02Cr0.04O compound presented distortions in due to difference...
Novel green photocatalysts based on ZnO in the presence of arabic gum (AGZ) or karaya (KGZ) were synthesized by a sol–gel method for photocatalytic performance.
TiO2 immobilized in Sepiolite (TiO2/Sep) was successfully prepared by the sol-gel technique, with titanium isopropoxide as precursor for formation of anatase phase calcined at 400 °C. The samples were characterized X-ray diffraction, Fourier Transform Infrared spectroscopy, Scanning Electron Microscopy coupled to energy dispersive and thermogravimetric analysis. results showed that TiO2/Sep structure identified all characterizations, showing specific peaks, bands, mass loss, morphology after...
Titanium dioxide TiO2/gellan gum (GG) in different compositions (1, 3, and 5% GG) was investigated to degrade methylene blue (MB) under UV light. XRD, SEM, EDS confirmed the anatase phase. The textural properties demonstrated formation of mesopores. band gaps were 3.2 eV, 3.0 2.9 eV. A photodegradation MB 95% observed using lowest concentration. It attributed photogenerated radicals specific surface area. FTIR spectra showed photostability catalyst after successive cycles. toxicity tests no...
Well-dispersed Au and Ag nanoparticles (NPs) have been immobilized on a zinc imidazolate metal-organic framework, Zn(mim), using the "one-pot" method tested as catalysts in ammonia borane hydrolysis. The AuNPs@Zn(mim) AgNPs@Zn(mim) materials were characterized by FTIR, XRD, ICP-OES, TGA, BET, SEM, TEM. catalyst showed high yield (98.5%) hydrogen generation rate (3352.71 mL min