Oxygen Storage in Transition Metal-Doped Bixbyite Vanadium Sesquioxide Nanocrystals

2020 ◽  
Vol 3 (10) ◽  
pp. 9645-9651
Author(s):  
Lauren C. Reimnitz ◽  
Thiri Lwin ◽  
Mario Lopez ◽  
Delia J. Milliron
Keyword(s):  
Transition Metal ◽  
Oxygen Storage ◽  
Vanadium Sesquioxide ◽  
Metal Doped

Oxygen Storage in Transition Metal-Doped Bixbyite Vanadium Sesquioxide Nanocrystals

2020 ◽  
Author(s):  
Lauren Reimnitz ◽  
Thiri Lwin ◽  
Mario Lopez ◽  
Delia Milliron
Keyword(s):  
Storage Capacity ◽  
Degradation Products ◽  
Oxygen Storage Capacity ◽  
Oxygen Storage ◽  
X Ray Diffraction ◽  
Temperature Oxidation ◽  
Vanadium Sesquioxide ◽  
Doped Materials ◽  
Metal Doped

<p>Bixbyite vanadium sesquioxide (V<sub>2</sub>O<sub>3</sub>) is a metastable polymorph of vanadium oxide that has been shown to have a significant oxygen storage capacity with very low temperature oxidation onset. In this work, bixbyite V<sub>2</sub>O<sub>3</sub> nanocrystals were synthesized with titanium and manganese dopants. Doped materials with varied dopant concentration were synthesized, and all were incorporated as aliovalent metal ions. The oxygen storage capacity of these nanocrystal materials was evaluated over ten oxidation and reduction cycles. It was found that over these ten cycles, the oxygen storage capacity of all the materials fell drastically. <i>In situ</i> X-ray diffraction evidence shows that manganese-doped materials degrade into an amorphous manganese-containing vanadate, while titanium-doped materials form crystalline degradation products. In all cases, this degradation causes an increase in the minimum mass achieved during oxygen release, indicating irreversible oxidation. </p>

Oxygen Storage in Transition Metal-Doped Bixbyite Vanadium Sesquioxide Nanocrystals

2020 ◽  
Author(s):  
Lauren Reimnitz ◽  
Thiri Lwin ◽  
Mario Lopez ◽  
Delia Milliron
Keyword(s):  
Storage Capacity ◽  
Degradation Products ◽  
Oxygen Storage Capacity ◽  
Oxygen Storage ◽  
X Ray Diffraction ◽  
Temperature Oxidation ◽  
Vanadium Sesquioxide ◽  
Doped Materials ◽  
Metal Doped

<p>Bixbyite vanadium sesquioxide (V<sub>2</sub>O<sub>3</sub>) is a metastable polymorph of vanadium oxide that has been shown to have a significant oxygen storage capacity with very low temperature oxidation onset. In this work, bixbyite V<sub>2</sub>O<sub>3</sub> nanocrystals were synthesized with titanium and manganese dopants. Doped materials with varied dopant concentration were synthesized, and all were incorporated as aliovalent metal ions. The oxygen storage capacity of these nanocrystal materials was evaluated over ten oxidation and reduction cycles. It was found that over these ten cycles, the oxygen storage capacity of all the materials fell drastically. <i>In situ</i> X-ray diffraction evidence shows that manganese-doped materials degrade into an amorphous manganese-containing vanadate, while titanium-doped materials form crystalline degradation products. In all cases, this degradation causes an increase in the minimum mass achieved during oxygen release, indicating irreversible oxidation. </p>

Superatomic properties of transition-metal-doped tetrahexahedral lithium clusters: TM@Li14

2019 ◽  
Vol 118 (2) ◽  
pp. e1592256 ◽  
Author(s):  
Lijuan Yan ◽  
Jun Liu ◽  
Jianmei Shao
Keyword(s):  
Transition Metal ◽  
Metal Doped ◽  
Lithium Clusters

Correlative experimental and theoretical characterization of transition metal doped hydroxyapatite nanoparticles fabricated by hydrothermal method

2021 ◽  
Vol 173 ◽  
pp. 110911
Author(s):  
Anastasia V. Sadetskaya ◽  
Natalia P. Bobrysheva ◽  
Mikhail G. Osmolowsky ◽  
Olga M. Osmolovskaya ◽  
Mikhail A. Voznesenskiy
Keyword(s):  
Transition Metal ◽  
Hydrothermal Method ◽  
Hydroxyapatite Nanoparticles ◽  
Theoretical Characterization ◽  
Metal Doped

scholarly journals Argon tagging of doubly transition metal doped aluminum clusters: The importance of electronic shielding

2021 ◽  
Vol 154 (5) ◽  
pp. 054312
Author(s):  
Jan Vanbuel ◽  
Piero Ferrari ◽  
Meiye Jia ◽  
André Fielicke ◽  
Ewald Janssens
Keyword(s):  
Transition Metal ◽  
Aluminum Clusters ◽  
Metal Doped

Density functional theory studies of transition metal doped Ti3N2 MXene monolayer

2021 ◽  
Vol 197 ◽  
pp. 110613
Author(s):  
Ijeoma Cynthia Onyia ◽  
Stella Ogochukwu Ezeonu ◽  
Dmitri Bessarabov ◽  
Kingsley Onyebuchi Obodo
Keyword(s):  
Density Functional Theory ◽  
Transition Metal ◽  
Density Functional ◽  
Functional Theory ◽  
Metal Doped

Oxygen-Storage Materials to Stabilize the Oxygen Redox Activity of Three-Layered Sodium Transition Metal Oxides

2021 ◽  
pp. 7804-7811
Author(s):  
Mariya L. Kalapsazova ◽  
Krassimir L. Kostov ◽  
Rositsa R. Kukeva ◽  
Ekaterina N. Zhecheva ◽  
Radostina K. Stoyanova
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Oxygen Storage ◽  
Redox Activity ◽  
Storage Materials
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