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View article: Development of a Paper-Based Electrochemical Immunosensor for Cardiac Troponin I Determination Using Gold Nanoparticle-Modified Screen-Printed Electrodes
Development of a Paper-Based Electrochemical Immunosensor for Cardiac Troponin I Determination Using Gold Nanoparticle-Modified Screen-Printed Electrodes Open
Acute Myocardial Infarction (AMI) is a critical cardiac condition that poses a substantial threat to myocardial function. Expedient diagnosis of AMI is paramount and relies on serological assays for rapid and accurate quantification of rel…
View article: Printable Carbon Black/Graphite Conductive Ink toward Electrochemical Determination of Norfloxacin in Environmental Samples
Printable Carbon Black/Graphite Conductive Ink toward Electrochemical Determination of Norfloxacin in Environmental Samples Open
Norfloxacin (NOR), a fluoroquinolone antibiotic widely used to treat urinary tract infections and gastrointestinal disorders caused by bacteria, poses a significant environmental concern. The widespread use of NOR can lead to the developme…
View article: Screen‐Printed Electrochemical Immunosensor Modified with Gold Nanoparticles for the Detection of Prostate Cancer Biomarker Human Kallikrein 2
Screen‐Printed Electrochemical Immunosensor Modified with Gold Nanoparticles for the Detection of Prostate Cancer Biomarker Human Kallikrein 2 Open
Initially, a printed electrode was fabricated on a polyethylene terephthalate (PET) substrate using an ink based on graphite, carbon black, and nail polish. The working electrode was then modified with gold nanoparticles, followed by the s…
View article: Patients and Professionals Perspectives on Minimum Data for Pulmonary Rehabilitation: Insights from a Delphi Study
Patients and Professionals Perspectives on Minimum Data for Pulmonary Rehabilitation: Insights from a Delphi Study Open
Background Pulmonary rehabilitation (PR) requires standardized documentation to monitor outcomes and ensure international comparability. Minimum Data Sets (MDS) are central to this process, but alignment between patients’ and professionals…
View article: Lab‐Made Graphite and Silver Conductive Inks for the Fabrication of Printed Electrodes
Lab‐Made Graphite and Silver Conductive Inks for the Fabrication of Printed Electrodes Open
This study presents the development of lab‐made graphite and silver conductive inks for the fabrication of mask‐based printed electrodes. The graphite ink was formulated using glass varnish, graphite powder, acetone, and propylene glycol, …
View article: Electrochemical Disposable Printed Aptasensor for Sensitive Ciprofloxacin Monitoring in Milk Samples
Electrochemical Disposable Printed Aptasensor for Sensitive Ciprofloxacin Monitoring in Milk Samples Open
An electrochemical aptasensor was developed for the rapid and sensitive detection of ciprofloxacin (CPX) in milk samples. The device was fabricated on a polyethylene terephthalate (PET) substrate using a screen-printing technique with carb…
View article: EFEITOS DO TREINAMENTO DO ASSOALHO PÉLVICO NO TRATAMENTO DA INCONTINÊNCIA URINÁRIA DE ESFORÇO EM MULHERES NA PÓS-MENOPAUSA
EFEITOS DO TREINAMENTO DO ASSOALHO PÉLVICO NO TRATAMENTO DA INCONTINÊNCIA URINÁRIA DE ESFORÇO EM MULHERES NA PÓS-MENOPAUSA Open
View article: Influence of Surface Treatments on the Electrochemical Performance of Lab-Made 3D-Printed Electrodes
Influence of Surface Treatments on the Electrochemical Performance of Lab-Made 3D-Printed Electrodes Open
This study investigated the effect of surface treatments on the electrochemical performance of 3D-printed electrodes for versatile applications. The conductive filament was obtained from a mixture of polylactic acid (PLA) and carbon black …
View article: Electrochemical Pretreatment and Functionalization of Pencil Graphite Electrodes for Enhanced Transducer Performance in Biosensing
Electrochemical Pretreatment and Functionalization of Pencil Graphite Electrodes for Enhanced Transducer Performance in Biosensing Open
This study aimed to optimize the electrochemical pretreatment and functionalization of pencil graphite electrodes (PGEs) for the performance evaluation of a transducer applied in initial studies in the development of an immunosensor for va…
View article: Development and Optimization of a Cost-Effective Electrochemical Immunosensor for Rapid COVID-19 Diagnosis
Development and Optimization of a Cost-Effective Electrochemical Immunosensor for Rapid COVID-19 Diagnosis Open
The coronavirus disease (COVID-19) pandemic has created an urgent need for rapid, accurate, and cost-effective diagnostic tools. In this study, an economical electrochemical immunosensor for the rapid diagnosis of COVID-19 was developed an…
View article: Development of Novel Conductive Inks for Screen-Printed Electrochemical Sensors: Enhancing Rapid and Sensitive Drug Detection
Development of Novel Conductive Inks for Screen-Printed Electrochemical Sensors: Enhancing Rapid and Sensitive Drug Detection Open
The development of screen-printed electrochemical sensors represents a rapidly expanding research field with great potential for applications in the rapid and sensitive determination of drugs in complex matrices. This work presents a revie…
View article: EFEITOS DO TRABALHO MUSCULAR DO ASSOALHO PÉLVICO NO PILATES EM GESTANTES DE BAIXO RISCO: REVISÃO NARRATIVA
EFEITOS DO TRABALHO MUSCULAR DO ASSOALHO PÉLVICO NO PILATES EM GESTANTES DE BAIXO RISCO: REVISÃO NARRATIVA Open
View article: Impressão 3D (Manufatura Aditiva) Aplicada à Química Eletroanalítica
Impressão 3D (Manufatura Aditiva) Aplicada à Química Eletroanalítica Open
View article: Sensores Eletroquímicos para Detecção de Doenças por Meio de Análise Respiratória de Compostos Orgânicos Voláteis (COVs): uma Revisão Abrangente
Sensores Eletroquímicos para Detecção de Doenças por Meio de Análise Respiratória de Compostos Orgânicos Voláteis (COVs): uma Revisão Abrangente Open
View article: 3D-Printed Electrochemical Sensors: A Comprehensive Review of Clinical Analysis Applications
3D-Printed Electrochemical Sensors: A Comprehensive Review of Clinical Analysis Applications Open
Three-dimensional printing technology has emerged as a versatile and cost-effective alternative for the fabrication of electrochemical sensors. To enhance sensor sensitivity and biocompatibility, a diverse range of biocompatible and conduc…
View article: Role of Wilting Time on the Chemical Composition, Biological Profile, and Fermentative Quality of Cereal and Legume Intercropping Silage
Role of Wilting Time on the Chemical Composition, Biological Profile, and Fermentative Quality of Cereal and Legume Intercropping Silage Open
Agricultural production in the Azores primarily focuses on the livestock sector, notably, dairy production, where cows graze year-round in a rotational system. To maintain pasture productivity, farmers often rely on synthetic nitrogen fert…
View article: Electrochemical Determination of Catechol Using a Disposable Printed Electrode with Conductive Ink Based on Graphite and Carbon Black
Electrochemical Determination of Catechol Using a Disposable Printed Electrode with Conductive Ink Based on Graphite and Carbon Black Open
Catechol (CT) is a phenolic compound widely used in various industrial sectors, but it is toxic; thus, there is a need for methods that aim to identify and quantify the existence of residues of this material in the environment. In this stu…
View article: Disposable Voltammetric Immunosensor for Determination and Quantification of Biomarker CA 15-3 in Biological Specimens
Disposable Voltammetric Immunosensor for Determination and Quantification of Biomarker CA 15-3 in Biological Specimens Open
A disposable voltammetric immunosensor was developed to measure breast cancer biomarker 15-3 (CA 15-3) in human saliva and serum samples. Screen-printed paper-based electrodes (f-SPE) previously fabricated by our research group using homem…
View article: Relevant Aspects in the Development of Electrochemical Aptasensors for the Determination of Antibiotics—A Review
Relevant Aspects in the Development of Electrochemical Aptasensors for the Determination of Antibiotics—A Review Open
Aptamers are three-dimensional structures of DNA or RNA that present high affinity and selectivity to specific targets, obtained through in vitro screening. Aptamers are used as biological recognizers in electrochemical biosensors, the so-…
View article: Development and Characterization of Conductive Ink Composed of Graphite and Carbon Black for Application in Printed Electrodes
Development and Characterization of Conductive Ink Composed of Graphite and Carbon Black for Application in Printed Electrodes Open
This work developed a conductive ink composed of carbonaceous material for printing electrochemical sensors. The optimized ink comprises graphite, carbon black, and nail polish, respectively (35.3:11.7:53%), as well as acetone as a solvent…
View article: Gold Nanoparticles: A Didactic Step-by-Step of the Synthesis Using the Turkevich Method, Mechanisms, and Characterizations
Gold Nanoparticles: A Didactic Step-by-Step of the Synthesis Using the Turkevich Method, Mechanisms, and Characterizations Open
In this study, gold nanoparticles (AuNPs) were synthesized using the Turkevich method. This article explains the didactic step-by-step synthesis, showing pictures of the entire process, including a well-explained mechanism and characteriza…
View article: Investigation of the Gold Nanoparticles Synthesis, Mechanism and Characterization Using the Turkevich Method
Investigation of the Gold Nanoparticles Synthesis, Mechanism and Characterization Using the Turkevich Method Open
The gold nanoparticle (AuNP) was synthesized using the well-known Turkevich method. This article explains didactic step-by-step of the synthesis, showing pictures of the entire process, including a well-explained mechanism and characteriza…
View article: Development of a Chemically Modified Electrode with Magnetic Molecularly Imprinted Polymer (MagMIP) for 17-β-Estradiol Determination in Water Samples
Development of a Chemically Modified Electrode with Magnetic Molecularly Imprinted Polymer (MagMIP) for 17-β-Estradiol Determination in Water Samples Open
The present work consisted of the development of an electrode based on carbon paste modified with magnetic molecularly imprinted polymer (CPE-MagMIP) for 17-β-estradiol (E2) detection. The incorporation of magnetic material (MagMIP) improv…
View article: Synthesis of a silver nanoparticle ink for fabrication of reference electrodes
Synthesis of a silver nanoparticle ink for fabrication of reference electrodes Open
View article: Determination of Organophosphorus Compounds in Water and Food Samples Using a Non-Enzymatic Electrochemical Sensor Based on Silver Nanoparticles and Carbon Nanotubes Nanocomposite Coupled with Batch Injection Analysis
Determination of Organophosphorus Compounds in Water and Food Samples Using a Non-Enzymatic Electrochemical Sensor Based on Silver Nanoparticles and Carbon Nanotubes Nanocomposite Coupled with Batch Injection Analysis Open
View article: Synthesis, Structural and Electrochemical Characterization of Nanomaterials Aiming Its Application in Electrochemical Sensor Development
Synthesis, Structural and Electrochemical Characterization of Nanomaterials Aiming Its Application in Electrochemical Sensor Development Open
In this work the effect of nanocomposite based on functionalized Carbon Nanotubes decorated with Silver Nanoparticles (CNTf-AgNP) and Gold Nanoparticles (CNTf-AuNP) as a modifier of Pyrolytic Graphite Electrode (PGE) surface was evaluated.…
View article: Electrochemical Sensor Based on Carbon Paste Modified by Cobalt(II) Porphyrin for Ascorbic Acid Determination
Electrochemical Sensor Based on Carbon Paste Modified by Cobalt(II) Porphyrin for Ascorbic Acid Determination Open
Ascorbic acid (AA) is widely used in the food, cosmetics and pharmaceutical industries.Therefore, the development of sensitive, fast and cost-effective analytical method for AA determination is very relevant in these areas.In this work, an…
View article: Development of highly stable conductive multiwalled carbon nanotube ink using covalent and non-covalent functionalization for electrochemical sensors
Development of highly stable conductive multiwalled carbon nanotube ink using covalent and non-covalent functionalization for electrochemical sensors Open
The purpose of this work was the fabrication of a conductive carbon nanotube (CNT) ink. The proposed CNT ink remained remarkably stable over several months. The method includes combining the covalent and non-covalent functionalization, res…
View article: Development of an Electrochemical Sensor Based on Nanocomposite of Fe3O4@SiO2 and Multiwalled Carbon Nanotubes for Determination of Tetracycline in Real Samples
Development of an Electrochemical Sensor Based on Nanocomposite of Fe3O4@SiO2 and Multiwalled Carbon Nanotubes for Determination of Tetracycline in Real Samples Open
In this work, an electrochemical sensor (GCE/MWCNT/Fe3O4@SiO2) based on a composite of multiwalled carbon nanotubes (MWCNT) and an Fe3O4@SiO2 (MMN) nanocomposite on a glassy carbon electrode (GCE) was developed for the detection of tetracy…
View article: ASSESSMENT OF FUNCTIONALIZED CARBON NANOTUBES AIMING AT THE DEVELOPMENT OF PRECONCENTRATION METHODS OF METALLIC IONS AND DETERMINATION BY SPECTROMETRIC AND ELECTROANALYTICAL TECHNIQUES
ASSESSMENT OF FUNCTIONALIZED CARBON NANOTUBES AIMING AT THE DEVELOPMENT OF PRECONCENTRATION METHODS OF METALLIC IONS AND DETERMINATION BY SPECTROMETRIC AND ELECTROANALYTICAL TECHNIQUES Open
This review focuses on the use of functionalized carbon nanotubes (CNTs) on the development of preconcentration methods with substantial contributions on selectivity and sensitivity for metal ions determination. CNTs have been usually empl…