Results 71 to 80 of about 118,822 (346)

Rotating hematite cube chains

open access: yesPhysical Review E, 2023
Recently a two-dimensional chiral fluid was experimentally demonstrated. It was obtained from cubic-shaped hematite colloidal particles placed in a rotating magnetic field. Here we look at building blocks of that fluid, by analyzing short hematite chain behavior in a rotating magnetic field.
M. Brics   +3 more
openaire   +3 more sources

One pot solvothermal synthesis of organic acid coated magnetic iron oxide nanoparticles [PDF]

open access: yes, 2013
Indexación: ScieloABSTRACT In this work we present the synthesis and characterization of iron oxide nanoparticles (IONPs), which were structurally and magnetically characterized. The use of iron salts and an organic acid (l-serine or ascorbic acid) as
Cruz, Carlos   +4 more
core  

Electrochemical Nitrate Reduction Reaction to Ammonia at Industrial‐Level Current Densities

open access: yesAdvanced Science, EarlyView.
This review starts from the mechanism and theoretical basis of electrochemical nitrate reduction reaction (NO3−RR), and systematically summarizes and discusses the design strategies of industrial‐level current density catalysts. In addition, the progress of industrial‐level NO3−RR‐based electrolyzers, including flow reactor and membrane electrode ...
Zhijie Cui   +4 more
wiley   +1 more source

Morphology and Doping Engineering of Sn-Doped Hematite Nanowire Photoanodes.

open access: yesNano letters (Print), 2017
High-temperature activation has been commonly used to boost the photoelectrochemical (PEC) performance of hematite nanowires for water oxidation, by inducing Sn diffusion from fluorine-doped tin oxide (FTO) substrate into hematite.
Mingyang Li   +10 more
semanticscholar   +1 more source

Copper Contact for Perovskite Solar Cells: Properties, Interfaces, and Scalable Integration

open access: yesAdvanced Energy and Sustainability Research, EarlyView.
Copper electrodes, as low‐cost, scalable contacts for perovskite solar cells, offer several advantages over precious metals such as Au and Ag, including performance, cost, deposition methods, and interfacial engineering. Copper (Cu) electrodes are increasingly considered practical, sustainable alternatives to noble‐metal contacts in perovskite solar ...
Shuwei Cao   +4 more
wiley   +1 more source

Sol-gel sinteza i magnetne osobine nanočestičnog hematita / Sol-gel synthesis and magnetic properties of hematite (α-Fe2O3) nanoparticles

open access: yesVojnotehnički Glasnik, 2010
U radu je prikazano istraživanje magnetnih karakteristika nanočestičnog feri-oksida, α-Fe2O3 (hematita), koji ispoljava superparamagnetne karakteristike tj. superparamagnetizam.
Marin M. Tadić, Nada M. Čitaković
doaj   +1 more source

Ilmenite Inclusion: A Solution towards Solid Sagging for Hematite-Based Invert Emulsion Mud

open access: yesGeofluids, 2022
The sagging tendency of hematite in drilling mud is a common challenge occurring at high-pressure and high-temperature (HP/HT) applications. This work studies the performance of hematite-based invert emulsion mud for HP/HT conditions and provides a ...
Salem Basfar   +2 more
doaj   +1 more source

Micron- to atomic-scale investigation of rare earth elements in iron oxides

open access: yesFrontiers in Earth Science, 2022
Hematite (α-Fe2O3) and magnetite (Fe3O4) readily accommodate a wide range of minor and trace elements from across the periodic table at up to wt.% concentrations.
Nigel J. Cook   +5 more
doaj   +1 more source

Evidence of Resource Procurement and Manufacturing Techniques in Caddoan Ceramic Assemblages from the Sabine, Cypress, and Sulphur River Drainage Basins, Rusk and Titus Counties, Texas [PDF]

open access: yes, 1995
Texas Utilities Services and Espey, Huston & Associates, Inc. have conducted ongoing archaeological investigations of cultural resources in Northeast Texas for the past 15 years.
Reese-Taylor, Kathryn
core   +1 more source

Boosting Photoelectrochemical Water Oxidation of Hematite in Acidic Electrolytes by Surface State Modification

open access: yesAdvanced Energy Materials, 2019
State‐of‐the‐art water‐oxidation catalysts (WOCs) in acidic electrolytes usually contain expensive noble metals such as ruthenium and iridium. However, they too expensive to be implemented broadly in semiconductor photoanodes for photoelectrochemical ...
Pengyi Tang   +17 more
semanticscholar   +1 more source

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