A5002456737- Layered Double Hydroxides Synthesis and Applications
- Adsorption and biosorption for pollutant removal
- Analytical chemistry methods development
- Phosphorus and nutrient management
- Garlic and Onion Studies
- Magnesium Oxide Properties and Applications
- Agricultural Practices and Plant Genetics
- Metabolomics and Mass Spectrometry Studies
- Pesticide Residue Analysis and Safety
- Electrochemical Analysis and Applications
- Mesoporous Materials and Catalysis
- Advanced Proteomics Techniques and Applications
- Mass Spectrometry Techniques and Applications
- Covalent Organic Framework Applications
- Advanced Photocatalysis Techniques
- Polyoxometalates: Synthesis and Applications
- Potato Plant Research
- Plant Physiology and Cultivation Studies
- Radioactive element chemistry and processing
- Extraction and Separation Processes
- Nanomaterials for catalytic reactions
- Insect Pest Control Strategies
- Pineapple and bromelain studies
- Biodiesel Production and Applications
- Nephrotoxicity and Medicinal Plants
Universidade Federal de Viçosa
2016-2025
Instituto de Ciencias Tecnológicas
2017-2020
FiberSensing (Portugal)
2017
Universidade Federal de Minas Gerais
2005-2010
Layered Double Hydroxide (LDH) intercalated with phosphate ions (LDH-phosphate) was synthesized by ion-exchange method from a precursor containing nitrate between the layers. The materials were characterized X-ray diffraction (XRD), attenuated total reflectance–Fourier transform infrared spectroscopy (ATR-FTIR), thermogravimetric analysis coupled to differential scanning calorimetry and mass spectrometry (TGA-DSC-MS), specific surface area (BET), electron microscopy (SEM), elemental...
The current research aims to introduce Layered Double Hydroxides (LDH) as nanomaterials be used in agriculture, with particular reference its use storage and slow release matrix of nutrients agrochemicals for plant growing. Structural characteristics, main properties, synthesis methods characterization LDH were covered this study. Moreover, some literature data have been reported demonstrate their potential nitrate, phosphate, agrochemicals, besides being adsorbent the wastewater treatment....
Phosphorus (P) is a nutrient necessary for agricultural production and potential originator eutrophication in water bodies, resulting qualitative changes; it may also affect the aquatic ecosystem human health. In addition, as finite resource, importance of studying strategies to remove from evident, thus making possible its recycling. Many studies have used powdered materials, including biochars, P decontamination; however, difficulty separating collecting these materials after adsorption be...
The objective of this work was to synthesize and characterize Layered Double Hydroxides (MgAl-LDHs, MgFe-LDHs, MgAlFe-LDHs) containing phosphate anions study P release kinetics conducted with the prepared materials. tests were performed in water by stirred-flow method verify profile from LDHs Results showed have similar characteristics those reactive sources P, such as thermophosphates. presented gradual LDH molar ratio cations Mg:Al = 2:1 a more sustained compared other produced Thus,...
The use of plant essential oils has been shown to efficiently control insect pests stored beans, significantly reducing the threats associated with synthetic insecticides. Here, we evaluated potential applications clove, Syzygium aromaticum L., and cinnamon, Cinnamomum zeylanicum Callosobruchus maculatus, considered as one most cosmopolitan beans. Using four combinations couples (i.e., unexposed couples, exposed females, males, couples), also how sublethal exposure these impacted C....
In this study, a new and efficient analytical method was developed to determine hexavalent chromium, Cr (VI), in water by flame atomic absorption spectrometry (FAAS). This consists on the simultaneous selective extraction preconcentration of (VI) dispersive solid phase (DSPE), using Zn-Al layered double hydroxide intercalated with l-Alanine (ZnAl-ALA-LDH) as adsorbent. Experimental parameters that influence (IV) determination efficiency, such pH, time interfering ions were studied optimized....
The limitation of prostate specific antigen (PSA) for cancer (PC) diagnosis is well-recognized. Gleason score (GS) has been the most widely used grading system tumor differentiation and represents best-established prognostic indicator progression. However, a rapid sensitive noninvasive diagnostic marker that differentiates GS-based disease progression needed. As PC becoming leading cause related death men in U.S. worldwide, an immediate need exists improved, sensitive, noninvasive, test...
The outstanding physical and chemical properties of the magnesium aluminate (MgAl2O4) spinel makes it an important material for novel technological applications. Considering that a presence native defects can promote changes in those properties, this work we present study structural, electronic thermodynamic MgAl2O4 spinel. calculated formation energy isolated defects, such as vacancies (VMg), aluminum (VAl) oxygen (VO), interstitial (Oi), antisites (MgAl, AlMg), well some complex (VO + Oi,...
Spectrometric methods with rapid biomarker detection capacity through untargeted metabolomics are becoming essential in the clinical cancer research. Liquid chromatography-mass spectrometry (LC-MS) is a rapidly developing metabolomic-based technique due to its high sensitivity, reproducibility, and separation efficiency. However, translation diagnostics often limited long data acquisition times (∼20 min/sample) laborious sample extraction procedures when employed for large-scale studies....
Sensitive, rapid, and meaningful diagnostic tools for prostate cancer (PC) screening are urgently needed. Paper spray ionization mass spectrometry (PSI-MS) is an emerging rapid technology detecting biomarker disease diagnoses. Due to lack of chromatography difficulties in employing tandem MS, PSI-MS-based untargeted metabolomics often suffers from increased ion suppression subsequent feature detection, affecting chemometric methods classification. This study first evaluated the data-driven...
Introduction Distinguishing and categorizing the origin of garlic are highly significant, considering its widespread use as a flavoring agent. With billions dollars annually in global trade, is frequently susceptible to fraudulent practices. Methodology Paper spray ionization mass spectrometry (PS‐MS) was employed quickly analyze samples from distinct geographic origins: China Brazil. The so‐generated PS‐MS data were treated with metabolomic multivariate approaches, these different regions...
In this study, Ca–Al mixed oxide produced from the thermal decomposition of a synthetic hydrocalumite was prepared and evaluated as catalyst in transesterification reaction for biodiesel production, using following reagents: refined soybean oil, crude macauba kernel methanol, ethanol. The were characterized by powder X-ray diffraction, thermogravimetry–differential scanning calorimetry coupled with mass spectrometry, specific surface area measurement, electron microscopy, energy-dispersive...
ABSTRACT The increase of the absorption efficiency boron (B) by plants is essential for increasing crop productivity. intercalation B in MgAl layered double hydroxides (LDHs) an alternative to evaluating how these materials can provide plants. In this work, a LDH intercalated with borate ions (Mg 2 Al-B-LDH) was synthesized constant pH coprecipitation method, and material produced evaluated as matrix storage source Mg Al-B-LDH characterized XRD, ATR-FTIR, TGA-DTA, specific surface area, pore...
Auxins are a class of organic substances known as plant-growth regulators, which act on plant physiology, promoting its full development. However, due to the great instability these among diversity crops and cultivation environments, it is necessary seek more efficient modes application, lead homogeneous distribution promote sustained release according plants demand. Seed coating, using films containing biodegradable polymer auxins intercalated into layered compounds, emerges very promising...