A low-cost anodic catalyst of transition metal oxides for lithium extraction from seawater

2020 ◽  
Vol 56 (47) ◽  
pp. 6396-6399
Author(s):  
Fan Zhang ◽  
Sixie Yang ◽  
Yuemin Du ◽  
Chao Li ◽  
Jiejun Bao ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Low Cost ◽  
Schematic Diagram ◽  
Anodic Catalyst

A schematic diagram of Li extraction from seawater by electrolysis with a hybrid electrolyte is shown. NiO@SP herein shows a satisfactory balance between the performance and cost for lithium recovery from seawater.

Interaction of a bioactive molecule with surfaces of nanoscale transition metal oxides: experimental and theoretical studies

2019 ◽  
Vol 43 (42) ◽  
pp. 16621-16628 ◽  
Author(s):  
Prasanta Bandyopadhyay ◽  
Rajkumar Jana ◽  
Kalishankar Bhattacharyya ◽  
Oleg I. Lebedev ◽  
Uma Dutta ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Theoretical Studies ◽  
Schematic Diagram ◽  
Bioactive Molecule ◽  
Experimental And Theoretical Studies

Schematic diagram of metal oxide–BTT interaction and the associated changes in experimental UV-Vis spectra. BTT adsorbed α-Fe2O3 is represented by red spectra, while green spectra represent BTT adsorbed NiO. Black spectra represent pure BTT spectra.

Recent advances in heteroatom doping of perovskite oxides for efficient electrocatalytic reactions

Nanoscale ◽  
2021 ◽  
Author(s):  
Yifan Liu ◽  
Honglan Huang ◽  
Liang Xue ◽  
Jingwen Sun ◽  
Xin Wang ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
High Stability ◽  
Low Cost ◽  
Perovskite Oxides ◽  
Heteroatom Doping ◽  
Type Transition ◽  
Perovskite Type ◽  
Electrocatalytic Reactions

Perovskite-type transition metal oxides have emerged as promising electrocatalysts for various electrocatalytic reactions owing to their low cost, compositional tunability and high stability. However, insufficient electrocatalytic activities of pristine perovskite...

scholarly journals Rational Design and Advance Applications of Transition Metal Oxides

2021 ◽  
Author(s):  
Muhammad Ikram ◽  
Ali Raza ◽  
Jahan Zeb Hassan ◽  
Arslan Ahmed Rafi ◽  
Asma Rafiq ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Rational Design ◽  
Gas Sensing ◽  
Low Cost ◽  
Lithium Ion ◽  
Size Composition ◽  
Storage Devices ◽  
Storage Methods

An attractive class of transition metal oxides (TMOs) have been freshly concerned with increasing research interest worldwide concerning stoichiometric and non-stoichiometric configurations as well, that usually exhibits a spinel structure. These TMOs will contribute substantial roles in the production of eco-friendly and low-cost energy conversion (storage) devices owing to their outstanding electrochemical properties. The current chapter involves the summary of the latest research and fundamental advances in the effectual synthesis and rational design of TMOs nanostructures with meticulous size, composition, shape, and micro as well as nanostructures. Also applications of TMOs such as effective photocatalyst, gas sensing, biomedical, and as an electrode material that can be utilized for lithium-ion batteries, and photovoltaic applications. Additionally, certain future tendencies and visions for the development of next-generation advanced TMOs for electrochemical energy storage methods are also displayed.

scholarly journals Visible light promoted photocatalytic water oxidation: effect of metal oxide catalyst composition and light intensity

2015 ◽  
Vol 5 (10) ◽  
pp. 4760-4764 ◽  
Author(s):  
Dominic Walsh ◽  
Noelia M. Sanchez-Ballester ◽  
Valeska P. Ting ◽  
Simon R. Hall ◽  
Lui R. Terry ◽  
...  
Keyword(s):  
Transition Metal ◽  
Light Intensity ◽  
Visible Light ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Water Oxidation ◽  
Oxide Catalyst ◽  
Low Cost ◽  
Catalyst Composition ◽  
Oxidation Effect

Simply prepared low-cost nanoparticulate transition metal oxides were used as catalysts in visible light promoted water oxidations. The activity using daylight equivalent light intensities was assessed.

HREM Study of electron-induced surface radiation damage in ReO3

1991 ◽  
Vol 49 ◽  
pp. 636-637
Author(s):  
R. Ai ◽  
H.-J. Fan ◽  
L. D. Marks
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Metal Oxides ◽  
Electron Irradiation ◽  
Transition Metal Oxides ◽  
Carbon Film ◽  
Transition Metal Ions ◽  
Surface Radiation ◽  
Valence Transition ◽  
Electron Microscopes

It has been known for a long time that electron irradiation induces damage in maximal valence transition metal oxides such as TiO2, V2O5, and WO3, of which transition metal ions have an empty d-shell. This type of damage is excited by electronic transition and can be explained by the Knoteck-Feibelman mechanism (K-F mechanism). Although the K-F mechanism predicts that no damage should occur in transition metal oxides of which the transition metal ions have a partially filled d-shell, namely submaximal valence transition metal oxides, our recent study on ReO3 shows that submaximal valence transition metal oxides undergo damage during electron irradiation.ReO3 has a nearly cubic structure and contains a single unit in its cell: a = 3.73 Å, and α = 89°34'. TEM specimens were prepared by depositing dry powders onto a holey carbon film supported on a copper grid. Specimens were examined in Hitachi H-9000 and UHV H-9000 electron microscopes both operated at 300 keV accelerating voltage. The electron beam flux was maintained at about 10 A/cm2 during the observation.

Problems with oxygen analysis in the system MgO-Al2O3-SiO2 with the electron microprobe

1992 ◽  
Vol 50 (2) ◽  
pp. 1624-1625
Author(s):  
Michel Fialin ◽  
Guy Rémond
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Electrostatic Charge ◽  
Carbon Layer ◽  
Sample Holder ◽  
Rock Matrix ◽  
Electrical Discharges ◽  
Thin Carbon ◽  
Beam Instabilities

Oxygen-bearing minerals are generally strong insulators (e.g. silicates), or if not (e.g. transition metal oxides), they are included within a rock matrix which electrically isolates them from the sample holder contacts. In this respect, a thin carbon layer (150 Å in our laboratory) is evaporated on the sections in order to restore the conductivity. For silicates, overestimated oxygen concentrations are usually noted when transition metal oxides are used as standards. These trends corroborate the results of Bastin and Heijligers on MgO, Al2O3 and SiO2. According to our experiments, these errors are independent of the accelerating voltage used (fig.l).Owing to the low density of preexisting defects within the Al2O3 single-crystal, no significant charge buildup occurs under irradiation at low accelerating voltage (< 10keV). As a consequence, neither beam instabilities, due to electrical discharges within the excited volume, nor losses of energy for beam electrons before striking the sample, due to the presence of the electrostatic charge-induced potential, are noted : measurements from both coated and uncoated samples give comparable results which demonstrates that the carbon coating is not the cause of the observed errors.

scholarly journals Electronic Phenomena of Transition Metal Oxides

Crystals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 256
Author(s):  
Christian Rodenbücher ◽  
Kristof Szot
Keyword(s):  
Solid State ◽  
Transition Metal ◽  
Metal Oxides ◽  
Real World ◽  
Transition Metal Oxides ◽  
Major Research ◽  
Research Fields ◽  
Real World Applications

Transition metal oxides with ABO3 or BO2 structures have become one of the major research fields in solid state science, as they exhibit an impressive variety of unusual and exotic phenomena with potential for their exploitation in real-world applications [...]

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