Revista Processos Químicos

Expediente

2025-05-21T13:06:08+00:00

Apresentação

2025-05-21T13:09:03+00:00

In Silico Analysis of the Pharmacokinetic and Toxicological Parameters of the Constituents of Aroeira-do-Sertão (Astronium urundeuva) and its Antimalarial Potential.

2025-08-04T16:33:45+00:00

Aroeira-do-sertão (A. urundeuva) is a predominant plant in the caatinga biome,popularly recognized in traditional Brazilian medicine. The ADMET parameters of thisspecies were analyzed to highlight the pharmacological potential of its constituents andpresent new alternatives for the treatment of malaria. In view of resistance developeddue to genetic mutations caused by the antimalarials themselves. Computer programssuch as AutoDock Vina and Discovery Studio were used to analyze the receptorligandinteractions of the malarial targets PfENR, PfLDH, PfFP2 and PvPMV withconstituents of aroeira, where Selina-3,7(11)-diene, viridiflorene and viridiflorolpresented interactivity with the PfENR protein and no mutagenic potential.

Effect of Coupling BiVO₄ and CoFe2O₄ on Structural Characteristics and Photocatalytic Property

2025-10-09T01:31:05+00:00

In this study, the methods of coprecipitation (CP) and coprecipitation followed by microwave-assisted hydrothermal treatment (CPTHAM) were evaluated in the synthesis of BiVO4 and CoFe2O4 semiconductors, isolated and coupled. The structure and morphology of the materials obtained were analyzed by XRD, IR spectroscopy, Raman, SEM and TEM. The application of the materials, photoactivated by visible light, in the degradation reactions of the dyes methylene blue (AM) and rhodamine B (RB) showed the greater photocatalytic potential of BiVO4 in relation to CoFe2O4 and the materials resulting from the BiVO4/CoFe2O4 coupling, with 85.98% degradation of AM and 34.24% of RB.

Chemical Reactions Through Investigative Experimentation: Report of Na Action by PIBID Quimica UFGD

2025-06-04T19:21:14+00:00

PIBID (Institutional Teaching Initiation Scholarship Program) plays a crucial role
in valuing teacher training for basic education in Brazil. Undergraduate students have
the opportunity to enrich the educational experience of basic education students by
collaborating with teachers in public schools. Through activities such as chemical
experiments, they make learning more practical and engaging, awakening students’
curiosity. Additionally, fellows gain valuable practical experience in teaching and
communications. The active participation of fellows improves the quality of chemistry
teaching in public schools.

Removal of Caduim (II) Ions from Aqueous Solutions by Nanocrystaline (SrTiO)

2025-06-04T19:35:16+00:00

SrTiO3 can be applied in the adsorption of toxic metals from aqueous solutions. This
work aims to synthesize and characterize SrTiO3 and evaluate its potential for adsorption
of cadmium(II) ions. The particles were synthesized by the polymeric precursors and
microwave-assisted hydrothermal (HTMW) method. X-ray diffraction confirmed the
obtaining of the desired crystalline phase and scanning electron microscopy pointed
out differences in the morphology of the particles depending on the synthesis method.
SrTiO3 obtained by HTMW removed 90% of Cd(II) ions in solution, being a promising
adsorbent for this metal

Organic Waste Treatment in University Restaurants: A Literature Review

2025-06-04T00:11:44+00:00

In 2017, the Ministry of the Environment collected data indicating that 50% ofurban waste was generated as organic solid waste. The National Solid Waste Policypoints to composting as an environmentally appropriate final disposal method. Theobjective of the bibliographic survey is to investigate the prospects for the treatment oforganic solid waste from the University Restaurant at the Araguaia University Campusof the Federal University of Mato Grosso through the implementation of the UFSCcomposting method. 11 articles were analyzed. Finally, we point out that the treatmentof the restaurant's organic fraction using a UFSC composting method addresses allsocio-environmental points.

Design and Application of Didactic Chemistry Models in Higher Education

2025-10-09T00:49:04+00:00

When it comes to disability, inclusive education in Chemistry Teaching introducesconcepts that are not very clear to most people. The objective of the study presented inthis article was to plan a set of activities that met different needs from the perspectiveof Universal Design for Learning, which is based on a set of principles that aim tofacilitate access to learning. To do this, we created didactic models, with the aimof making conceptual information tactile that is visual. Thus, we believe teachingmolecular geometries, arrangements, and angles is accessible to the visually impaired.

Demystifying Common Sense Using Scientific Research: Proposals for a Differentiated Class

2025-06-04T00:11:40+00:00

The Covid – 19 pandemic allowed the spread of untrue information, making day laypeople believe in inaccurate information. To discuss this theme, an activity correlatingcommon sense and scientific sense was worked on in a class of the 2nd grade of highschool. After dividing the room into groups and carrying out extensive research onspecific topics, a debate was held on the concepts conceived by the groups, improvingthe understanding of the students, who realized that despite the differences betweencommon sense and scientific knowledge, both are importante as a means of boostingthe science.

Exploring Evaluative Aspects of Inclusion Anda Active Methohologies in Chemistry Teaching: Analysis Based on the Theory of Subjectivity

2025-06-04T00:11:38+00:00

The present research had as its theoretical basis González Rey’s Theory ofSubjectivity. This work presents the result from a State of the Art, aiming to discuss thedevelopment of active methodologies in the teaching of Science/Chemistry inclusivelyfor students with Autism Spectrum Disorder (TEA). In order to delimit the searches, weselected a period from 2012 to 2023 and, for this, we used the Science/Chemistry eventrepositories and Google Scholar. Furthermore, based on the Theory of Subjectivity,a subjective analysis was carried out, together with a Chemistry Teacher, seeking tounderstand her educational approach in the school environment.

Crystallography of Minerals: A Brief Description

2025-06-04T00:11:36+00:00

Crystallography is a science that investigates the three-dimensional structure ofcrystalline solids, spanning areas such as physics, chemistry, and geology. This study isessential to understand the properties of materials, from small organic molecules to mineralsand macromolecules like proteins. Widely used in determining the properties of drugs andbioactive compounds, crystallography explores how atomic and molecular arrangementinfluences the biological characteristics and activities of compounds. The study of mineralcrystal structures, dating back to the early days of X-ray crystallography, reveals howatomic organization defines physical properties of minerals, such as hardness, cleavage,and luster. Examples like beryl and quartz illustrate the practical application of theseinsights, from jewelry making to the industrial use of minerals. Mineral crystallographynot only contributes to the identification and classification of minerals and rocks but isalso crucial in the extraction, processing, and application of mineral resources in industry.Moreover, it continues to expand our understanding of minerals and their properties,driving technological innovations and sustainable exploitation of natural resources.

Study of Prestressing Losses in Prestressed Hollow Core Slab

2025-06-04T00:11:35+00:00

Due to the complex way of verifying the prestress loss that occurs in honeycombpanels, calculators use an average estimate of this loss. The objective is to use equationswith the support of standards to verify the initial and deferred prestressing loss rates fordifferent types of slabs. Two different groups of slabs were selected for this verification,with three slabs in each group. In the case of initial prestressing losses, the first group ofslabs reached an average percentage of 6.59% and a standard deviation of 1.65%, while thesecond group averaged 5.75% and a standard deviation of 2.47%, Regarding the generalanalysis of initial prestressing losses, a total mean of 6.17% of initial loss was obtained,with a standard deviation of 1.94%. Taking into account the standard deviation, it can beconsidered that the results for initial losses were within the forecast (5%), however, forsizing purposes it would be reasonable to increase this recommendation to at least 8% ofinitial loss. For the deferred loss of 15% proposed by the literature, all the slabs analyzedwere within this percentage, proving that the percentage presented to the author meets thelosses predicted by numerical analyses.Versão do resumoeminglês, emblocoúnico.

Low-Cost Synthesis of New Materials in the Form of Molybdate and Tungstate Heterostructures

2025-06-04T00:11:31+00:00

In this research, the methods of coprecipitation (CP) and coprecipitation followedby microwave-assisted hydrothermal treatment (CPTHAM) were investigated inthe synthesis of isolated and coupled semiconductors CaWO4, CaMoO4, Ag2MoO4.The structures of the materials obtained were characterized by the X-ray diffraction(XRD) technique, in order to prove the obtaining of the crystalline phases of interestfrom the materials through the studied routes. According to the technique used, thematerials were crystalline in the scheelite phases for CaWO4 and CaMoO4 and cubicspinel for Ag2MoO4.

Calyx of Hibiscus sabdariffa: Evolution of the Adsorbent Potencial Against Metalic Ions

2025-06-04T00:11:29+00:00

In this work, the dehydrated calyx of Hibiscus sabdariffa was used to synthesize itsprecursors, which were designated as Washed Hibiscus (WH), Magnetized Hibiscus(MH), and Washed Magnetized Hibiscus (WMH). The purpose of these syntheses was thepreparation of alternative adsorbent materials to be used for the extraction of cobalt andcopper in aqueous matrix. The material in nature form, Hibiscus, and the derivatives—WH, MH, and WMH where submited to characterization through X-ray diffraction(XRD) to analyze crystallinity and identify the phases present in the materials. Energydispersive X-ray fluorescence (EDXRF) provided detailed information about the chemicalcomposition, revealing the predominant elements in the materials. In addition, tests wereconducted to determine the point of zero charge (pHpzc), which is crucial for understandingthe adsorption behavior across different pH ranges. These techniques enabled a deeperunderstanding of the properties of the developed materials, demonstrating that the appliedtreatments were effective in modifying and enhancing the hibiscus’s adsorptive capacitiesfor cobalt and copper ions.

Determination of Vitamin C in Fruit Extracts: A Pedagogical Proposal to Work on Chemical and Biochemical Concepts in High School

2025-06-04T00:11:25+00:00

This study addresses a suggestion for a pedagogical methodology to integrateexperimentation in Chemistry Teaching, involving the determination of vitamin Cin orange, lemon and kiwi extracts, using the iodometric method as a tool to teachconcepts of stoichiometry, analytical methods, chemical reactions. oxidationreductionand biochemicals. The proposal aims to connect theoretical content tostudents' daily lives, making learning more meaningful and engaging, allowingstudents to develop practical and analytical skills, promoting protagonism in thelearning process. Furthermore, the sustainable approach, using low-cost reagents withlow environmental impact, makes it easier to carry out this act ivity in the classroom.

Efeito da Dopagem com Sm3+nas Propriedades Fotoluminescentes e Fotocatalíticas do BaSnO3

2025-06-04T00:11:27+00:00

In this work photoluminescent and photocatalytic properties of barium stannatedoped with samarium will be presented, synthesized using coprecipitation followed byhydrothermal treatment and calcination. X-ray diffraction (XRD) analysis confirmedthe crystalline phase in samples doped with 1%, and 2% Sm3+, while pure samplesand with 4% and 8% lacked crystallinity. From Raman spectroscopy characteristicvibratios of pure and doped barium stannate. Results of Infrared are synchronizedwhit those obtained from XRD and Raman. The Photoluminescent intensity increaseswith Sm3+ concentrations. Photocatalysis demonstrated a degradation efficiency ofapproximately 60%.