Filtry
wszystkich: 483
wybranych: 460
Wyniki wyszukiwania dla: BIOBATTERY, LACCASE, BIOCATHODE, NANOTUBES
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A DFT+U study of carbon nanotubes under influence of a gate voltage
PublikacjaA possibility of appearance of antiferromagnetic ordering in armchair carbon nanotubes and graphene is studied using density functional theory within a DFT+U approach. It is shown that the Coulomb repulsion between electrons in the -orbitals of graphene would need to reach a threshold value of ,...
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Modifying CVD synthesised carbon nanotubes via the carbon feed rate
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Novel catalysts for low temperature synthesis of single wall carbon nanotubes
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Single-wall carbon nanotubes based anticancer drug delivery system
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Iron filled single-wall carbon nanotubes – A novel ferromagnetic medium
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Diameter sensitive effect in singlewalled carbon nanotubes upon acid treatment
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Effect of Functionalization of Carbon Nanotubes with Psychosine on Complement Activation and Protein Adsorption
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Enzymatic electrodes nanostructured with functionalized carbon nanotubes for biofuel cell applications
PublikacjaNanostructured bioelectrodes were designed and assembled into a biofuel cell with no separating membrane.
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Preparation and properties of composite coatings, based on carbon nanotubes, for medical applications
PublikacjaThe coatings based on carbon nanotubes (CNTs) are increasingly developed for their applications, among others, in medicine, in particular for implants in implantology, cardiology, and neurology. The present review paper aims at a detailed demonstration of diferent preparation methods for such coatings, their performance, and relationships between deposition parameters and microstructure and material, mechanical, physical, chemical,...
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Mechanical Properties of Single-Walled Carbon Nanotubes with AIREBO Force-Filed
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Transparent TiO2 nanotubes supporting silver sulfide for photoelectrochemical water splitting
PublikacjaDifferences between photoelectrochemical and electrochemical activity were thoroughly investigated for the oxygen evolution reaction mediated by Ag2S deposited on two types of ordered titania substrates. Titanium dioxide nanotubes were fabricated by anodization of magnetron sputtered Ti films on ITO-coated glass substrates or directly from Ti foil. Further, Ag2S deposition on the nanotubes was carried out using successive ionic...
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Genistein inhibits activities of methylenetetrahydrofolate reductase and lactate dehydrogenase, enzymes which use NADH as a substrate
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Excessive amount of lactose in the diet of two-week-old calves induces urinary protein changes
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Stabilizing lactate production through repeated batch fermentation of food waste and waste activated sludge
PublikacjaBio-valorization of organic waste streams, such as food waste and waste activated sludge, to lactic acid (LA) has recently drawn much attention. It offers an opportunity for resource recovery, alleviates environmental issues and potentially turns a profit. In this study, both stable and high LA yield (0.72 ± 0.15 g/g total chemical oxygen demand) and productivity rate (0.53 g/L•h) were obtained through repeated batch fermentation....
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Relation between polyphenols, malondialdehyde, antioxidant capacity, lactate dehydrogenase and toxic elements in human colostrum milk
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Immobilized preparation of cold-adapted and halotolerant Antarctic β-galactosidase as a highly stable catalyst in lactose hydrolysis
PublikacjaZimnolubna rekombinowana beta-galaktozydaza antarktycznej morskiej bakterii Pseudoalteromonas sp. 22b została immobilizowana na chitozanie za pomocą aldehydu glutarowego. Preparat immobilizowanego enzymu w przeciwieństwie do preparatu enzymu w buforze reakcyjnym nie był inhibowany przez glukozę. Immobilizacja enzymu wpłynęła na podwyższenie o 10°C optymalnej temperatury aktywności względem jego nieimmobilizowanego odpowiednika...
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Feasibility Study of Biohydrogen Production from Acid Cheese Whey via Lactate-Driven Dark Fermentation
PublikacjaThe high loading of lactic acid bacteria (LAB) present in cheese whey still limits its use as hydrogen feedstock. This study aims to investigate the feasibility of producing hydrogen from acid cheese whey via lactate-driven dark fermentation (LD-DF). Mesophilic batch fermentations were performed with delipidated acid cheese whey at a fixed pH of 5.8 and driven by an acidogenic bacterial culture containing LAB and lactate-oxidizing...
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Spray deposited carbon nanotubes counter electrodes for dye-sensitized solar cells
PublikacjaCarbon nanotubes due to their catalytic properties are a promising alternative to platinum counter electrodes (CE) for dye-sensitized solar cells (DSSC). In this study, counter electrodes were made from double-walled carbon nanotube (DWCNT) ink using the spray printing technique and afterwards thermally treated at temperatures ranging from 120 to 300 °C. Morphology and structure was studied using scanning electron microscopy and...
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Influence of Preparation Procedure on Physicochemical and Antibacterial Properties of Titanate Nanotubes Modified with Silver
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Removal of metal particles from carbon nanotubes using conventional and microwave methods
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Influence of geometry and annealing temperature in argon atmosphere of TiO2 nanotubes on their electrochemical properties
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Influence of Thermal Modification and Morphology of TiO2 Nanotubes on Their Electrochemical Properties for Biosensors Applications
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Electrochemical stability of TiO2 nanotubes deposited with silver and gold nanoparticles in aqueous environment
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Synthesis of carbon nanotubes and nanospheres with controlled morphology using different catalyst precursors
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The Response of Pseudomonas aeruginosa PAO1 to UV-activated Titanium Dioxide/Silica Nanotubes
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Carbon nanotubes chemically derivatized with rebox systems as mediators for biofuel cell applications
PublikacjaEnzymatyczne bioogniwa paliwowe to urządzenia wykorzystujące enzymy do przemiany energii chemicznej w elektryczną. Zyskana w ten sposób energia może służyć do zasilania wszczepialnych urządzeń (np. czujników glukozy, rozruszników serca).Przedstawiono sposób otrzymywania i właściwości bioelektrod, w których wykorzystano nanorurki węglowe modyfikowane mediatorami enzymatycznych reakcji redoks. Do nanorurek przyłączano zarówno mediatory...
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Electronic structure and optical properties of boron doped single-wall carbon nanotubes
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Bulk synthesis of carbon-filled silicon carbide nanotubes with a narrow diameter distribution
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Gel-based separation of single-walled carbon nanotubes for metallic and semiconducting fractions
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Enhancement of thermal stability of multiwalled carbon nanotubes via different silanization routes
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Advances in engineering of diameter and distribution of the number of walls of carbon nanotubes in alcohol CVD
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Tuning Carbon Nanotubes Through Poor Metal Addition to Iron Catalysts in CVD
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Synthesis and Characterization of Nitrogen-doped Carbon Nanotubes Derived from g-C3N4
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Preparation and characterization of catalyst mix Fe-Co/MgO for carbon nanotubes growth
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Silver filled single-wall carbon nanotubes—synthesis, structural and electronic properties
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Enhanced thermal properties of poly(lactic acid)/MoS2/carbon nanotubes composites
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Derivatization of single-walled carbon nanotubes with redox mediator biocatalytic oxygen electrodes
PublikacjaSingle-walled carbon nanotubes were covalently modyfied with a redox mediator derived from 2,2'-azino-bis-(3-ethylbenzothiazole)-6-sulfonic acid.
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Enzyme-linked carbon nanotubes as biocatalytic tools to degrade and mitigate environmental pollutants
PublikacjaA wide array of organic compounds have been recognized as pollutants of high concern due to their controlled or uncontrolled presence in environmental matrices. The persistent prevalence of diverse organic pollutants, including pharmaceutical compounds, phenolic compounds, synthetic dyes, and other hazardous substances, necessitates robust measures for their practical and sustainable removal from water bodies. Several bioremediation and...
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On the Buckling Response of Axially Pressurized Nanotubes Based on a Novel Nonlocal Beam Theory
PublikacjaIn the present study, the buckling analysis of single-walled carbon nanotubes (SWCNT) on the basis of a new refined beam theory is analyzed. The SWCNT is modeled as an elastic beam subjected to unidirectional compressive loads. To achieve this aim, the new proposed beam theory has only one unknown variable which leads to one equation similar to Euler beam theory and is also free from any shear correction factors. The equilibrium...
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Influence of Annealing Atmospheres on Photoelectrochemical Activity of TiO2 Nanotubes Modified with AuCu Nanoparticles
PublikacjaIn this article, we studied the annealing process of AuCu layers deposited on TiO2 nanotubes (NTs) conducted in various atmospheres such as air, vacuum, argon, and hydrogen in order to obtain materials active in both visible and UV–vis ranges. The material fabrication route covers the electrochemical anodization of a Ti plate, followed by thin AuCu film magnetron sputtering and further thermal treatment. Scanning electron microscopy...
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Carbon Nanotubes Chemically Derivatized with Redox Systems as Mediators for Biofuel Cell Applications
PublikacjaEnzymatyczne bioogniwa paliwowe to urządzenia wykorzystujące enzymy do przemiany energii chemicznej w elektryczną. Zyskana w ten sposób energia może służyć do zasilania wszczepialnych urządzeń (np. czujników glukozy, rozruszników serca). Przedstawiono sposób otrzymywania i właściwości bioelektrod, w których wykorzystano nanorurki węglowe modyfikowane mediatorami enzymatycznych reakcji redoks. Do nanorurek przyłączano zarówno mediatory...
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Carbon Nanotubes Chemically Derivatize with Redox Systems as Mediators for Biofel Cell Applicatoions
PublikacjaEnzymatyczne bioogniwa paliwowe to urządzenia wykorzystujące enzymy do przemiany energii chemicznej w elektryczną. Zyskana w ten sposób energia może służyć do zasilania wszczepialnych urządzeń (np. czujników glukozy, rozruszników serca).Przedstawiono sposób otrzymywania i właściwości bioelektrod, w których wykorzystano nanorurki węglowe modyfikowane mediatorami enzymatycznych reakcji redoks. Do nanorurek przyłączano zarówno mediatory...
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Hydrothermal Cobalt Doping of Titanium Dioxide Nanotubes towards Photoanode Activity Enhancement
PublikacjaDoping and modification of TiO2 nanotubes were carried out using the hydrothermal method. The introduction of small amounts of cobalt (0.1 at %) into the structure of anatase caused an increase in the absorption of light in the visible spectrum, changes in the position of the flat band potential, a decrease in the threshold potential of water oxidation in the dark, and a significant increase in the anode photocurrent. The material...
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The interaction of the pulsed laser irradiation with titania nanotubes - Theoretical studies on the thermal effect
PublikacjaThis paper reports temperature dispersion simulations of titania nanotubes irradiated by the 355 nm, pulsed, nanosecond laser. The modelling with the use of Finite Elements Method concerns titania nanotubes of the length and the wall thickness in the range of 0.5–2 μm and 5–20 nm, respectively. The uniqueness of the morphology was preserved by ensuring the wall thickness variation along the height of the tube, which was determined...
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Scalable Route toward Superior Photoresponse of UV-Laser-Treated TiO2 Nanotubes
PublikacjaTitanium dioxide nanotubes gain considerable attention as a photoactive material due to chemical stability, photocorrosion resistance, or lowcost manufacturing method. This work presents scalable pulsed laser modification of TiO2 nanotubes resulting in enhanced photoactivity in a system equipped with a motorized table, which allows for modifications of both precisely selected and any-large sample area. Images obtained from scanning...
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Formation of the hollow nanopillar arrays through the laser-induced transformation of TiO2 nanotubes
PublikacjaIn the following article, we present a simple, two-step method of creating spaced, hollow nanopillars, from the titania nanotube arrays via pulsed laser-treatment. Due to the high ordering of the structure, the prepared material exhibits photonic properties, which has been shown to increase the overall photoefficiency. The optical and morphological changes in the titania nanotubes after pulsed laser-treatment with 532, 355, and...
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Enhanced electrochemical capacitance of TiO2 nanotubes/MoSe2 composite obtained by hydrothermal route
PublikacjaThis study presents the hydrothermal synthesis of a novel TiO2 nanotubes/MoSe2 nanocomposite and investigates its enhanced electrochemical capacitance properties. The composite material was fabricated through a hydrothermal method, embedding MoSe2 onto TiO2 nanotubes. The resulting composite, termed Ti/TiO2/MoSe2, exhibited significantly improved electrochemical capacitance compared to TiO2 nanotubes alone. The synthesized composite...
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A model of a tunable quantum dot in a semiconducting carbon nanotube
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Ammonia amendment promotes high rate lactate production and recovery from semi-continuous food waste fermentation
PublikacjaIn this study, a reliable approach using ammonia nitrogen was proposed to increase lactate production during semi-continuous food waste (FW) fermentation under mesophilic conditions. Both free ammonia nitrogen (FAN) and ammonium ion (NH4+-N) were present in mesophilic reactors, with a wide FAN/NH4+-N ratio variation due to the intermittent pH control. The investigation of responsible mechanisms revealed that the increased production...
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A novel approach to enhance high optically active L-lactate production from food waste by landfill leachate
PublikacjaThe recycling of food waste (FW) through anaerobic fermentation into lactic acid (LA), with two isomers L-LA and D-LA, aligns with the principles of a bio-based circular economy. However, FW fermentation is often limited by competing pathways, acidification inhibition, and trace metals deficiency. This study investigates the introduction of landfill leachate, containing buffering agents (ammonia) and trace metals, into FW fermentation....