8 results match your criteria: "University Polytechnica of Bucharest[Affiliation]"
Renewable Carbon Materials as Electrodes for High-Performance Supercapacitors: From Marine Biowaste to High Specific Surface Area Porous Biocarbons.
ACS Omega
May 2023
Instituto de Ciências Moleculares IMS-CIQUP, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, 687, Porto 4169-007, Portugal.
Article Synopsis
- - Biowaste, especially fish waste, is highlighted as a promising source for creating renewable carbon materials, which can serve as eco-friendly electrode materials for batteries and supercapacitors.
- - A novel method to produce high surface area biocarbon from mussel cooking wastewater glycogen was developed and characterized through various advanced techniques, achieving impressive properties like a specific surface area of 1526 m²/g and a capacitance of 657 F/g.
- - The developed biocarbon was successfully scaled up for a two-electrode supercapacitor, yielding a maximum capacitance of 703 F/g, demonstrating excellent performance metrics including high energy and power density, as well as strong cycling stability.
Chitins from Seafood Waste as Sustainable Porous Carbon Precursors for the Development of Eco-Friendly Supercapacitors.
Materials (Basel)
March 2023
Instituto de Ciências Moleculares IMS-CIQUP, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal.
Article Synopsis
- Carbon materials from marine waste, specifically chitin from squid and prawn, are being explored for use as electrodes in supercapacitors, offering a sustainable resource for energy storage devices.* -
- Chitin was extracted using an environmentally friendly method, and various advanced techniques were employed to analyze the resulting porous carbon materials, assessing their surface area, morphology, and structural properties.* -
- The electrochemical performance of these chitin-based carbons was evaluated, revealing notable specific capacitance values and setting a foundation for future studies on optimizing their use with eco-friendly electrolytes.*
Characterization of Carbon Nanomaterials Dispersions: Can Metal Decoration of MWCNTs Improve Their Physicochemical Properties?
Nanomaterials (Basel)
December 2021
CIQUP-Physical Analytical Chemistry and Electrochemistry Group, Departamento de Química e Bioquimica, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, 687, 4169007 Porto, Portugal.
A suitable dispersion of carbon materials (e.g., carbon nanotubes (CNTs)) in an appropriate dispersant media, is a prerequisite for many technological applications (e.
View Article and Find Full Text PDFElectrochemical Non-Enzymatic Detection of Glucose Based on 3D Electroformed Copper on Ni Foam Nanostructures.
Materials (Basel)
June 2020
Analytical Chemistry Department, Faculty of Pharmacy, Iuliu Haţieganu University of Medicine and Pharmacy, 4 Louis Pasteur St., 400349 Cluj-Napoca, Romania.
Despite the fact that the electrochemical biosensors based on glucose oxidase represent the golden standard for the management of diabetes, the elaboration of nonenzymatic sensors became extensively studied as an out-of-the-box concept that aims to simplify the existing approach. An important point of view is represented by the low price of the sensing device that has positive effects for both end-users and healthcare systems. The enzyme-free sensors based on low-cost materials such as transition metals have similar analytical properties to the commercial ones while eliminating the issues associated with the presence of the enzyme, such as the stability issues and limited shelf-life.
View Article and Find Full Text PDFSelective Detection of Folic Acid Using 3D Polymeric Structures of 3-Carboxylic Polypyrrole.
Sensors (Basel)
April 2020
Analytical Chemistry Department, Faculty of Pharmacy, Iuliu Haţieganu University of Medicine and Pharmacy, 4 Louis Pasteur St., 400349 Cluj-Napoca, Romania.
Article Synopsis
- Detecting folic acid is crucial for human health, particularly for fetal development and overall biological functions, with supplementation helping to address deficiencies.
- Researchers are developing advanced sensing platforms using modified conductive polymers, which can be tailored in shape for better performance.
- A new sensor made from carboxylic functionalized polypyrrole can detect folic acid levels between 2.5 μM and 200 μM, showing great accuracy when tested on human serum and pharmaceutical products, confirmed by additional spectrophotometric methods.
Residual titanium flakes as a novel material for retention and recovery of rare earth and relatively rare earth elements.
Environ Sci Pollut Res Int
February 2020
Faculty of Applied Chemistry and Materials Science, University Polytechnica of Bucharest, 1-7 Polizu, 011061, Bucharest, Romania.
The aim of this study was the valorization of titanium flakes (waste) from titanium and titanium alloy ingot production factories and using in applications related to metals recovery as retention bed for some trace metals. The titanium flakes were anodized for surface nanostructuration with TiO nanotubes and then annealed in order to increase the surface stability. The nanostructured titanium flakes were loaded and pressed in a retention column linked with inductively coupled plasma spectrometer (ICP-OES).
View Article and Find Full Text PDFNitrodopamine vs dopamine as an intermediate layer for bone regeneration applications.
Mater Sci Eng C Mater Biol Appl
May 2019
University Polytechnica of Bucharest, Faculty of Applied Chemistry and Materials Science, 1-7 Polizu, 011061 Bucharest, Romania; University Politehnica of Bucharest, Faculty of Medical Engineering, 1-7 Polizu, 011061 Bucharest, Romania. Electronic address:
The aim of this paper was to present a parallel investigation of the poly(dopamine) (DP) and nitrodopamine (NDP) structures deposited on titanium surface (Ti) and titanium oxide nanotubes (NT-TiO/Ti) and to highlight their advantages and drawbacks to serve as an intermediary layer for bone regeneration applications. This study outlines some hypotheses regarding the manner in which these compounds are able to form a stable film that could serve as bioadhesive. The paper is also a study of structuring and evolution of film architecture for two coatings, polydopamine and nitrodopamine in terms of surface structure, stability, wettability, morphology, adhesion and ability to protect the titanium surface.
View Article and Find Full Text PDFSurfactant-dependent macrophage response to polypyrrole-based coatings electrodeposited on Ti6Al7Nb alloy.
Mater Sci Eng C Mater Biol Appl
August 2013
University Polytechnica of Bucharest, Faculty of Applied Chemistry and Materials Science, Bucharest, Romania.
In this study, polypyrrole (PPy) films were successfully synthesized on Ti6Al7Nb alloy by potentiostatic polymerization in the presence of poly(sodium 4-styrenesulfonate) (NaPSS), t-octylphenoxy polyethoxyethanol (Triton X-100) and N-dodecyl-β-D-maltoside (DM) surfactants. Atomic force microscopy (AFM) analysis of the PPy/surfactant composite films revealed a granular structure characterized by a lower surface roughness than un-modified PPy films. The results demonstrated that addition of surfactants, namely Triton X-100 and DM, can improve electrochemical film stability and corrosion resistance.
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