scholarly journals A physical method for investigating defect chemistry in solid metal oxides

APL Materials ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 011106
Author(s):  
Christian Rodenbücher ◽  
Carsten Korte ◽  
Thorsten Schmitz-Kempen ◽  
Sebastian Bette ◽  
Kristof Szot
Keyword(s):  
Metal Oxides ◽  
Physical Method ◽  
Defect Chemistry ◽  
Solid Metal

Tuning metal oxide defect chemistry by thermochemical quenching

2020 ◽  
Vol 22 (11) ◽  
pp. 6308-6317
Author(s):  
Shehab Shousha ◽  
Sarah Khalil ◽  
Mostafa Youssef
Keyword(s):  
Low Temperature ◽  
Metal Oxide ◽  
Metal Oxides ◽  
First Principles ◽  
Growth Conditions ◽  
Defect Chemistry ◽  
First Principles Calculations

Based on first-principles calculations, we show how to tune the low temperature defect chemistry of metal oxides by varying growth conditions.

Defect chemistry in metal oxides

1996 ◽  
Vol 58 (1-3) ◽  
pp. 75-93 ◽  
Author(s):  
Per Kofstad
Keyword(s):  
Metal Oxides ◽  
Defect Chemistry

Reaction of 1-(het)aryl-3-bromoprop-2-ynones with furans in solid metal oxides or salts: cross-coupling or cycloaddition?

2018 ◽  
Vol 28 (1) ◽  
pp. 20-21 ◽  
Author(s):  
Denis N. Tomilin ◽  
Lyubov N. Sobenina ◽  
Maxim D. Gotsko ◽  
Igor A. Ushakov ◽  
Boris A. Trofimov
Keyword(s):  
Metal Oxides ◽  
Cross Coupling ◽  
Solid Metal

Roles of Cationic and Elemental Calcium in the Electro-Reduction of Solid Metal Oxides in Molten Calcium Chloride

2007 ◽  
Vol 62 (5-6) ◽  
pp. 292-302 ◽  
Author(s):  
Guohong Qiu ◽  
Kai Jiang ◽  
Meng Ma ◽  
Dihua Wang ◽  
Xianbo Jin ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Molten Salts ◽  
Reference Electrode ◽  
Solid Metal ◽  
Background Current ◽  
Metallothermic Reduction ◽  
Oxide Powders ◽  
Elemental Calcium

Previous work, mainly from this research group, is re-visited on electrochemical reduction of solid metal oxides, in the form of compacted powder, in molten CaCl2, aiming at further understanding of the roles of cationic and elemental calcium. The discussion focuses on six aspects: 1.) debate on two mechanisms proposed in the literature, i. e. electro-metallothermic reduction and electro-reduction (or electro-deoxidation), for the electrolytic removal of oxygen from solid metals or metal oxides in molten CaCl2; 2.) novel metallic cavity working electrodes for electrochemical investigations of compacted metal oxide powders in high temperature molten salts assisted by a quartz sealed Ag/AgCl reference electrode (650 ºC- 950 ºC); 3.) influence of elemental calcium on the background current observed during electrolysis of solid metal oxides in molten CaCl2; 4.) electrochemical insertion/ inclusion of cationic calcium into solid metal oxides; 5.) typical features of cyclic voltammetry and chronoamperometry (potentiostatic electrolysis) of metal oxide powders in molten CaCl2; and 6.) some kinetic considerations on the electrolytic removal of oxygen.

Self-modification of titanium dioxide materials by Ti3+ and/or oxygen vacancies: new insights into defect chemistry of metal oxides

RSC Advances ◽  
2014 ◽  
Vol 4 (27) ◽  
pp. 13979-13988 ◽  
Author(s):  
Juan Su ◽  
Xiaoxin Zou ◽  
Jie-Sheng Chen
Keyword(s):  
Titanium Dioxide ◽  
Metal Oxides ◽  
Oxygen Vacancies ◽  
Defect Chemistry ◽  
Modification Of Titanium

In this review, we highlight the recent research efforts towards understanding the defect chemistry of titanium dioxide. Particular attention is paid to the synthesis of self-modified TiO2 materials with Ti3+/oxygen vacancies and the favorable effects of these defects on the properties and applications of the obtained materials.

Conversion of Microalgae under Hydrothermal Conditions

2013 ◽  
Vol 860-863 ◽  
pp. 501-505
Author(s):  
Ying Ying Zhu ◽  
Zeng Xu ◽  
Guo Dong Yao ◽  
Yun Jun ◽  
Fang Ming Jin
Keyword(s):  
Acetic Acid ◽  
Metal Oxides ◽  
Value Added ◽  
Green Technology ◽  
Solid Metal ◽  
Filling Rate ◽  
Hydrothermal Conditions ◽  
Promising Solution

A new and green technology for converting microalgae to high value-added chemicals with solid metal oxides catalysts under hydrothermal conditions was proposed. The results indicated that ZrO2, among other test catalysts, can prominently boost the production of acetic acid and a highest yield of 24% was achieved at 300 °C for 2 h with a filling rate of 50%. The metal oxides catalyst provided a promising solution to obtain acetic acid from microalgae conversion.

Defect Chemistry and Transport in Metal Oxides

2005 ◽  
pp. 55-86
Author(s):  
J Irvine ◽  
I Metcalfe ◽  
A Thursfield ◽  
A Kruth
Keyword(s):  
Metal Oxides ◽  
Defect Chemistry
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