scispace - formally typeset
Search or ask a question
Author

Irlan S. Lima

Bio: Irlan S. Lima is an academic researcher from University of São Paulo. The author has contributed to research in topics: Materials science & Nanomaterials. The author has an hindex of 1, co-authored 2 publications receiving 1 citations.

Papers
More filters
Journal ArticleDOI
TL;DR: In this article, multifunctional NiVCe-layered double hydroxide nanoparticles were synthesized by modified sol-gel method, which demonstrated excellent potential for its utilization as electrode materials for hybrid supercapacitor, oxygen evolution reaction (OER) and sensor applications.
Abstract: Multifunctional nanomaterials have been attracting increasing attention as solutions to the existing challenges in energy systems and sensing technologies. In this regards, multifunctional NiVCe-layered double hydroxide (NiVCe-LDH) nanoparticles were synthesized by modified sol-gel method. The analysis of this material demonstrated excellent potential for its utilization as electrode materials for hybrid supercapacitor, oxygen evolution reaction (OER) and sensor applications. The NiVCe-LDH nanoparticles delivered a specific charge of 740 C g-1 at 10 A g-1 and decent rate performance (charge retention of 68.7% at 100 A g−1), showing excellent prospects as electrode material for hybrid energy storage devices. In addition, NiVCe-LDH nanoparticles have also been successfully applied as proof-of-concept for OER, as confirmed by their low Tafel slope of 47 mV dec−1. Finally, trimetallic NiVCe-LDH-based screen-printed electrodes were developed for the sensing of hydrogen peroxide directly in a real complex mouthwash sample, achieving a satisfactory recovery value around 98% employing a fast and simple BIA procedure. These results allow us to predict the great potential of this trimetallic hydroxide for building electrochemical sensors with good perspectives as electroactive material for OER processes and energy storage technologies.

3 citations

Journal ArticleDOI
TL;DR: Laser scribing is a technique that converts carbon-rich precursors into 3D-graphene nanomaterial via direct, single-step and maskless laser writing in environmental conditions and using a scalable approach as mentioned in this paper .
Abstract: Laser scribing is a technique that converts carbon-rich precursors into 3D-graphene nanomaterial via direct, single-step, and maskless laser writing in environmental conditions and using a scalable approach. It allows simple, fast, and reagentless production of a promising material with outstanding physicochemical features to create novel electrochemical sensors and biosensors. This review addresses different strategies for fabricating laser-scribed graphene (LSG) devices and their association with nanomaterials, polymers, and biological molecules. We provide an overview of their applications in environmental and health monitoring, food safety, and clinical diagnosis. The advantages of their integration with machine learning models to achieve low bias and enhance accuracy for data analysis is also addressed. Finally, in this review our insights into current challenges and perspectives for LSG electrochemical sensors are presented.

2 citations

Journal ArticleDOI
TL;DR: In this paper , a NiCoMnZnMg-containing high-entropy glycerolate (HE-Gly) particles has been synthesized using a scalable solvothermal method.

1 citations

Journal ArticleDOI
TL;DR: In this article , it was shown that Ni-based precursor complexes are the primary products of the Tower method reaction, and these precursors undergo transition to layered Ni-glycerolate derivatives upon thermal treatment.

Cited by
More filters
Journal ArticleDOI
TL;DR: In this article, multifunctional NiVCe-layered double hydroxide nanoparticles were synthesized by modified sol-gel method, which demonstrated excellent potential for its utilization as electrode materials for hybrid supercapacitor, oxygen evolution reaction (OER) and sensor applications.
Abstract: Multifunctional nanomaterials have been attracting increasing attention as solutions to the existing challenges in energy systems and sensing technologies. In this regards, multifunctional NiVCe-layered double hydroxide (NiVCe-LDH) nanoparticles were synthesized by modified sol-gel method. The analysis of this material demonstrated excellent potential for its utilization as electrode materials for hybrid supercapacitor, oxygen evolution reaction (OER) and sensor applications. The NiVCe-LDH nanoparticles delivered a specific charge of 740 C g-1 at 10 A g-1 and decent rate performance (charge retention of 68.7% at 100 A g−1), showing excellent prospects as electrode material for hybrid energy storage devices. In addition, NiVCe-LDH nanoparticles have also been successfully applied as proof-of-concept for OER, as confirmed by their low Tafel slope of 47 mV dec−1. Finally, trimetallic NiVCe-LDH-based screen-printed electrodes were developed for the sensing of hydrogen peroxide directly in a real complex mouthwash sample, achieving a satisfactory recovery value around 98% employing a fast and simple BIA procedure. These results allow us to predict the great potential of this trimetallic hydroxide for building electrochemical sensors with good perspectives as electroactive material for OER processes and energy storage technologies.

3 citations

Journal ArticleDOI
TL;DR: In this paper , a supramolecular electrocatalyst for Oxygen Evolution Reaction (OER) was synthesized from a central multibridging cobalt tetrapyridylporphyrazine (CoTPyPz) species by attaching four [Ru(bpy)2Cl]+ groups.
Abstract: A new supramolecular electrocatalyst for Oxygen Evolution Reaction (OER) was synthesized from a central multibridging cobalt tetrapyridylporphyrazine (CoTPyPz) species by attaching four [Ru(bpy)2Cl]+ groups. Both CoTPyPz and the tetraruthenated cobalt porphyrazine species, TRuCoTPyPz, form very homogenous molecular films just by dropcasting their methanol solutions onto GCE electrodes. Such films exhibited low overpotentials for O2 evolution, e.g., 560 e 340 mV, respectively, displaying high stability, typically exceeding 15 h. The kinetic parameters obtained from the Tafel plots showed that the peripheral complexes are very important for the electrocatalytic activity. Hyperspectral Raman images taken along the electrochemical process demonstrated that the cobalt center is the primary active catalyst site, but its performance is enhanced by the ruthenium complexes, which act as electron-donating groups, in the supramolecular system.

2 citations

Journal ArticleDOI
TL;DR: In this article , the synthesis of micro- and nanostructures derived from metal-glycerolate, using different preparation processes, as well as the applications of these materials, especially for the preparation of supercapacitors and batteries electrodes, and electrocatalysts for water splitting.

2 citations

Journal ArticleDOI
TL;DR: High-entropy materials (HEM) have played a significant role in the current research due to their novel composition with their synergistic elemental interactions resulting in enhanced functional properties as mentioned in this paper .

1 citations