FeCO is present as scales in process equipment, corrosion products, geological systems, and carbon storage. It is therefore crucial to investigate the properties of FeCO to understand scaling in all these systems. However, FeCO is not commercially available, and when used in the lab it is either obtained through extraction of geological formations or synthesized in-house. Geologically formed FeCO contains multiple impurities, which will affect its overall properties, and the synthesized product is highly sensitive to either oxidation or the synthesis pathways. This work explores the parameter space of a synthesis route routinely and pathways for FeCO. We characterized the structure of FeCO using X-ray powder diffraction and its thermal properties with thermogravimetric analysis and scanning electron microscopy. We show how synthesis parameters influence either the macroscopic or microscopic properties of the synthesized product. Our study serves as a guideline for future research regarding what parameters to choose when synthesizing FeCO and what product can be obtained. We herein present a novel fundamental understanding of FeCO.
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http://dx.doi.org/10.1021/acsomega.2c07303 | DOI Listing |
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December 2024
School of Physical Science and Technology, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, China.
Well-designed structures of the electrocatalyst provide excellent catalytic activity and high structural stability during the sulfur reduction reaction of Lithium-sulfur batteries (LSBs). In this study, a novel and efficient structure is developed to encapsulate bimetallic FeCo nanoalloy catalysts within N-doped carbon nanotube (NCNT) on carbon nanofibers (FeCo@NCNT/CNFs) using a combination of electrospinning and rapid-cooling techniques. The NCNT matrix with abundant sites not only serves as a high pathway for electron transport during the reaction, but its encapsulation structure also acts as armor to protect the FeCo nanoalloy.
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December 2024
Department of Materials Science and Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea.
Sci Technol Adv Mater
November 2024
WPI Advanced Institute for Materials Research, Tohoku University, Sendai, Japan.
A body-centered cubic (bcc) FeCo(B) is a current standard magnetic material for perpendicular magnetic tunnel junctions (-MTJs) showing both large tunnel magnetoresistance (TMR) and high interfacial perpendicular magnetic anisotropy (PMA) when MgO is utilized as a barrier material of -MTJs. Since the -MTJ is a key device of current spintronics memory, . spin-transfer-torque magnetoresistive random access memory (STT-MRAM), it attracts attention for further advance to explore new magnetic materials showing both large PMA and TMR.
View Article and Find Full Text PDFEnviron Geochem Health
December 2024
Hainan Key Laboratory for Coastal Marine Eco-environment and Carbon Sink/ Yazhou Bay Innovation Institute/College of Ecology and Environment, Hainan Tropical Ocean University, Sanya, 572022, Hainan, China.
Excessive heavy metal in drinking water are harmful to human body. Groundwater was still the drinking water resource in most of rural areas in the central of the Yangtze River Basin. Heavy metals of Fe, Mn, and As in the low plain region of the Yangtze River Basin significantly exceeded the standard, resulting in 16.
View Article and Find Full Text PDFJ Phys Condens Matter
December 2024
Department of Physics, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India.
In the present work, nanocrystalline samples of compositionsNixFe1-xCo2O4(x= 0.0, 0.25, 0.
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