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Impact of climate change that stems from gaseous emissions require sustainable materials to eliminate sulfur. This study involves the modification of humic acid with magnetite nanoparticles (Fe₃O₄ NPs) by a microwave-assisted synthesis of an absorbent with reasonable pore volume and diameter for elimination of thiophenic compounds from fuel. The magnetic nano adsorbent designated Fe3O4@HA was characterized using advanced spectroscopic techniques, while their structure and morphology were analyzed through DLS, XPS, XRD, FT-IR, TGA, FESEM-EDX, VSM, and BET-N2 techniques.
View Article and Find Full Text PDFPhysicochemical Properties of Curen® Filaments Versus Nylon Filaments in Toothbrush Bristles: An In Vitro Study.
Cureus
December 2024
Medical Affairs, Dr. Reddy's Laboratories Ltd., Hyderabad, IND.
Background Toothbrush manufacturers commonly use bristle materials such as nylon, polybutylene terephthalate, polypropylene, polyethylene terephthalate, boar hair, bamboo, carbon fiber, silicone, polylactic acid, or their modifications such as Curen. Nylon filaments have long been demonstrated to be durable and are widely used, but not much is known regarding the performance of Curen filaments compared to nylon filaments. This in vitro study compared the stiffness, abrasion potential, abrasion resistance, and bristle surface changes of Curen and nylon filaments.
View Article and Find Full Text PDF"Double-Use" Strategy for Improving the Photoelectrochemical Performance of BiVO Photoanodes Using a Cobalt-Functionalized Polyoxotungstate.
ACS Appl Mater Interfaces
January 2025
Institute of Electrochemistry, Ulm University, Albert-Einstein-Allee 47, Ulm 89081, Germany.
Doping and surface-modification are well-established strategies for the performance enhancement of bismuth vanadate (BiVO) photoanodes in photoelectrochemical (PEC) water splitting devices. Herein, a "double-use" strategy for the development of high-performance BiVO photoanodes for solar water splitting is reported, where a molecular cobalt-phosphotungstate (CoPOM = Na[Co(HO)(PWO)]) is used both as a bulk doping agent as well as a surface-deposited water oxidation cocatalyst. The use of CoPOM for bulk doping of BiVO is shown to enhance the electrical conductivity and improve the charge separation efficiency, resulting in the enhancement of the maximum applied-bias photoconversion efficiency (ABPE) by a factor of ∼18 to 0.
View Article and Find Full Text PDFStudy on the effect of acid fracturing fluid on pore structure of middle to high rank coal.
Sci Rep
January 2025
College of Mining, Guizhou University, Guiyang, 550025, Guizhou, China.
Acid fracturing fluids can effectively improve the microporous structure of coal, thereby enhancing the permeability of coal seam and the efficiency of gas drainage. To explore the effects of acid fracturing fluids on the pore structure modification of coal samples from different coal ranks, hydrochloric acid-based acid fracturing fluids were prepared and used to soak four types of medium to high-rank coal in an experiment. High-pressure mercury intrusion and liquid nitrogen adsorption techniques results demonstrated that the acid fracturing fluid can effectively alter the pore structure of coal.
View Article and Find Full Text PDFSurface Treatment of Polyamide 6 through Enzymatic Hydrolysis and Covalent Incorporation of Chitosan Nanoparticles.
Biomacromolecules
January 2025
Departamento de Química, Federal University of Santa Catarina, Roberto Sampaio Gonzaga Street, 88040-380 Florianópolis, Brazil.
Polyamide (PA) has notable physical and chemical properties and is one of the most versatile synthetic materials in the industrial sector. However, its hydrophobicity creates significant challenges in its beneficiation and modification. Modifications of PA with chitosan nanoparticles (CNPs) can improve its undesired properties but are rarely found in the literature due to the weak interaction between the chemical groups of both structures.
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