Recent progress in carbon-based nanomaterials: critical review

Journal of Nanoparticle Research, Год журнала: 2024, Номер 26(5)

Опубликована: Май 1, 2024

Язык: Английский

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Carbon-doped titanium dioxide (TiO2) as Li-ion battery electrode: Synthesis, characterization, and performance

Results in Chemistry, Год журнала: 2024, Номер 7, С. 101422 - 101422

Опубликована: Янв. 1, 2024

Development of lithium-ion batteries (Li-ion batteries) with high safety and solidity features has become a main challenge researchers when practical implementations for large-scale energy storage systems are prioritized. In this work, we introduce useful efficient strategy to manufacture long-standing high-rate carbon-doped TiO2 (C-TiO2) as an anode material. Titanium (TiO2) C-TiO2 were successfully prepared through hydrothermal method in order improve the electrical performance Li-battery. The structure thermal properties investigated by XRD, Raman TGA; whereas evaluated Glvanostatic discharge–charge measurements. density function theory (DFT) results revealed that doped carbon atoms causes considerable stress inside crystal lattice TiO2, avoid or minimize underwent relaxation then optimized. electrodes Li-battery was analyzed 100 cycles at different calcination temperatures 400 450 °C. also showed charge capacities 500 mAhg−1 mAg−1.

Язык: Английский

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CdIn2Se4@chitosan heterojunction nanocomposite with ultrahigh photocatalytic activity under sunlight driven photodegradation of organic pollutants

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 267, С. 131465 - 131465

Опубликована: Апрель 9, 2024

Язык: Английский

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Graphene Synthesis Techniques and Environmental Applications

Materials, Год журнала: 2022, Номер 15(21), С. 7804 - 7804

Опубликована: Ноя. 4, 2022

Graphene is fundamentally a two-dimensional material with extraordinary optical, thermal, mechanical, and electrical characteristics. It has versatile surface chemistry large area. carbon nanomaterial, which comprises sp2 hybridized atoms placed in hexagonal lattice one-atom thickness, giving it structure. A number of synthesis techniques including epitaxial growth, liquid phase exfoliation, electrochemical mechanical chemical vapor deposition are used for the graphene. prepared using different can have benefits deficiencies depending on its application. This study provides summary graphene preparation critically assesses use graphene, derivates, composites environmental applications. These applications include as membrane detoxication purification water, active gas sensing, heavy metal ions detection, CO2 conversion. Furthermore, trend analysis both been performed by extracting analyzing Scopus data from past ten years. Finally, conclusions outlook provided to address residual challenges related

Язык: Английский

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A Review of High-Energy Density Lithium-Air Battery Technology: Investigating the Effect of Oxides and Nanocatalysts

Journal of Chemistry, Год журнала: 2022, Номер 2022, С. 1 - 32

Опубликована: Март 12, 2022

In vehicles that require a lot of electricity, such as electric vehicles, it is necessary to use high-energy batteries. Among the developed batteries, lithium-ion battery has shown better performance. This an energy density 10 equal and uses air oxygen active material cathode anode like made lithium metal. The used in these batteries must have special properties strong catalytic activity high conductivity, nanotechnology greatly helped improve materials lithium-air importance proper catalyst distribution relationship between oxide product indirect effect ORR on OER reaction not present fuel cell. maximum capacity theory using graphene under optimal electron conduction conditions experimental obtained for by optimizing structure geometry, examples structural engineering carbon fiber nanotubes fabrication with ability perform properly while providing space placement, are examined. article describes mechanism this battery, its components challenges application solve also discussed.

Язык: Английский

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RETRACTED ARTICLE: Comparison and evaluation of the performance of graphene-based biosensors

Carbon letters, Год журнала: 2022, Номер 32(4), С. 927 - 951

Опубликована: Март 28, 2022

Язык: Английский

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Antimicrobial finishing of textiles using nanomaterials

Brazilian Journal of Biology, Год журнала: 2023, Номер 84

Опубликована: Май 15, 2023

Metals, such as copper and silver, can be extremely toxic to bacteria at exceptionally low concentrations. Because of this biocidal activity, metals have been widely used antimicrobial agents in a multitude applications related with agriculture, healthcare, the industry general. A large number microorganisms live human environment. if balance these creatures nature is disturbed, health individual society will threatened due production emission unpleasant odors reduction standards. The presence on textiles cause adverse effects discoloration or staining textiles, decomposition fibrous materials, reduced strength, eventually decay textiles. Most fibers polymers do not show resistance microbes by providing growth factors for right temperature humidity, nutrients from sweat fat skin glands, dead cells well materials stage finishing causes rapid spread various microbes. With advent nanotechnology, industries daily life underwent changes. In recent years, increasing research nanoparticles has led greater efficiency added value. These modified prevent odors, spread, transmission diseases. This article reviews basics principles tetiles, brief overview nanostructures properties.

Язык: Английский

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Investigation of effective parameters in the production of alumina gel through the sol-gel method

Case Studies in Chemical and Environmental Engineering, Год журнала: 2023, Номер 8, С. 100405 - 100405

Опубликована: Июнь 19, 2023

Sol-gel chemistry is currently applied as one of the most widely used methods for synthesis nanoparticles. In this method hydrolysis and poly-condensation reactions occur when gel precursors are mixed with water catalyst. The further condensation sol particles into a three-dimensional network produces gel. There several parameters that effect on gelation time such molar ratio alkoxide to water, rate hydrolysis, type amount catalyst used, initial concentration temperature drying. Encapsulated solvent can be removed from by either evaporative drying or supercritical Where resulting solids known xerogel an aerogel, respectively. During process due surface tension liquid, capillary pressure gradient built in pore walls, which able collapse part volume. volume shrinkage may prevented strength, thermal stability, structure morphology aerogels keys success wider applications supports, acoustic insulators adsorbents. Among support materials, alumina became popular recently its highly chemical stability higher porosity. present study, nano-catalysts through aluminum tri-sec-butoxide (ASB) ethanol was investigated. carried out at 32 60 °C different concentrations precursor types amounts acid Rate formation, efficiency polymerization production were measured discussed. Results showed addition around 0.2 ml ASB malar 2 maximized produced minimized time. Then, synthesized optimum conditions dried two methods, atmospheric carbon dioxide results Scanning Electron Microscopy compared.

Язык: Английский

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A graphene oxide/polyaniline nanocomposite biosensor: synthesis, characterization, and electrochemical detection of bilirubin

RSC Advances, Год журнала: 2023, Номер 13(51), С. 36280 - 36292

Опубликована: Янв. 1, 2023

The level of free bilirubin is a considerable index for the characterization jaundice-related diseases. Herein, biosensor was fabricated via immobilization oxidase (BOx) on graphene oxide (GO) and polyaniline (PANI) that were electrochemically co-precipitated indium tin (ITO) conductive glass. structural enzyme electrode characterized by FTIR, XRD, Raman spectroscopy, while spectral thermal properties investigated UV-vis thermogravimetric analysis (TGA). Owing to activity BOx/GO@PANI/ITO biosensor, it could detect with good selectivity sensitivity in low response time. electrochemical studied using impedance spectroscopy (EIS) cyclic voltammetry (CV). At polarization potential 0.2 V vs. Ag/AgCl, sensor illustrated only 2 s at 30 °C pH 7.5. LOD LOQ calculated found be 0.15 nM 2.8 nM, respectively. signal showed linear concentration range 0.01-250 μM. 5 °C, demonstrated half-time 120 days, through which utilized 100 times this temperature conditions. By common colorimetric method, data levels serum determination coefficient (R2) 0.97.

Язык: Английский

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CNTs-Supercapacitors: A Review of Electrode Nanocomposites Based on CNTs, Graphene, Metals, and Polymers

Symmetry, Год журнала: 2023, Номер 15(6), С. 1179 - 1179

Опубликована: Июнь 1, 2023

Carbon nanotubes (CNTs), due to mechanical, electrical, and surface area properties their ability adapt different nanocomposite structures, are very substantial in supercapacitor electrodes. In this review, we have summarized high-performance, flexible, symmetry CNT supercapacitors based on the CNTs/graphene, CNTs/metal, CNTs/polymer To present recent developments supercapacitors, discuss performance of electrical such as specific capacitance (SC), power energy densities, retention (CR). The comparison electrodes results reported for future researchers.

Язык: Английский

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