scholarly journals In-situ analysis of the oxygen evolution reaction of nickel based mixed metal oxide using Raman spectroscopy

2019 ◽  
Author(s):  
Sawan Karumbaiah Koopadira
Keyword(s):  
Raman Spectroscopy ◽  
Metal Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
In Situ Analysis ◽  
Mixed Metal Oxide ◽  
Mixed Metal

scholarly journals In Situ Raman Spectroscopy as a Tool for Discerning Subtle Structural Differences between Commercial (Ce,Zr)O2-Based OSC Materials of Identical Composition

Catalysts ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 462
Author(s):  
Chrysanthi Andriopoulou ◽  
Deb Harris ◽  
Hazel Stephenson ◽  
Angelos M. Efstathiou ◽  
Soghomon Boghosian
Keyword(s):  
Raman Spectroscopy ◽  
Metal Oxide ◽  
Raman Spectra ◽  
Mixed Metal Oxide ◽  
Oxide Materials ◽  
In Situ Raman Spectroscopy ◽  
Aqueous Chemistry ◽  
Mixed Metal ◽  
In Situ Raman

In situ Raman spectroscopy was used at temperatures in the 50–480 °C range under oxidizing (20% O2/He) and reducing (5% H2/He) flowing gas atmospheres to compare the spectra obtained for a series of industrial rare earth doped CexZr1−xO2−δ oxygen storage capacity (OSC) mixed metal oxide materials of identical at % composition, which were prepared by the same chemical synthesis route, in which one synthesis parameter of the aqueous chemistry was slightly varied. The Raman fingerprint of the anionic sublattice is very sensitive to O atom relocations within the bulk of the material matrix and to the pertinent defect topology in each case. A protocol of sequential Raman measurements and analysis was proposed to discern subtle differences between the oxygen vacancy and defect topologies of the examined materials. It can be concluded that for two materials under comparison for their structures, identical Raman spectra are obtained only if the procedures followed for their preparation are identical; a slight variation of one single parameter (e.g., in the aqueous chemistry stage) results in discernible differences in the Raman spectra. The proposed procedure can serve as a tool for proving or disproving infringement of IPR (Intellectual Property Rights) protected preparation methods of ceria-based mixed metal oxide materials.

Enhanced Catalytic Activity and Stability of the Oxygen Evolution Reaction on Tetravalent Mixed Metal Oxide

2020 ◽  
Vol 32 (9) ◽  
pp. 3893-3903 ◽  
Author(s):  
Ikuya Yamada ◽  
Masaya Kinoshita ◽  
Seiji Oda ◽  
Hirofumi Tsukasaki ◽  
Shogo Kawaguchi ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Metal Oxide ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Mixed Metal Oxide ◽  
Mixed Metal

In situ XPS investigations of Cu1−xNixZnAl-mixed metal oxide catalysts used in the oxidative steam reforming of bio-ethanol

2005 ◽  
Vol 55 (4) ◽  
pp. 287-299 ◽  
Author(s):  
Subramani Velu ◽  
Kenzi Suzuki ◽  
Munusamy Vijayaraj ◽  
Sanmitra Barman ◽  
Chinnakonda S. Gopinath
Keyword(s):  
Metal Oxide ◽  
Steam Reforming ◽  
Oxide Catalysts ◽  
Mixed Metal Oxide ◽  
Metal Oxide Catalysts ◽  
Mixed Metal ◽  
In Situ Xps ◽  
Mixed Metal Oxide Catalysts

scholarly journals On the faradaic selectivity and the role of surface inhomogeneity during the chlorine evolution reaction on ternary Ti–Ru–Ir mixed metal oxide electrocatalysts

2014 ◽  
Vol 16 (27) ◽  
pp. 13741-13747 ◽  
Author(s):  
Aleksandar R. Zeradjanin ◽  
Nadine Menzel ◽  
Wolfgang Schuhmann ◽  
Peter Strasser
Keyword(s):  
Metal Oxide ◽  
Oxygen Evolution ◽  
Surface Reactivity ◽  
Spatial Inhomogeneity ◽  
Mixed Metal Oxide ◽  
Surface Inhomogeneity ◽  
Mixed Metal ◽  
Mixed Metal Oxide Catalysts ◽  
Chlorine Evolution Reaction

Faradaic selectivity of the chlorine and oxygen evolution (left) is linked to the spatial inhomogeneity of the surface reactivity of Ti–Ru–Ir mixed metal oxide catalysts.

Unravelling in-situ formation of highly active mixed metal oxide CuInO2 nanoparticles during CO2 electroreduction

Nano Energy ◽  
2018 ◽  
Vol 49 ◽  
pp. 40-50 ◽  
Author(s):  
Roghayeh Imani ◽  
Zhen Qiu ◽  
Reza Younesi ◽  
Meysam Pazoki ◽  
Daniel L.A. Fernandes ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Mixed Metal Oxide ◽  
Mixed Metal ◽  
Highly Active ◽  
Co2 Electroreduction ◽  
In Situ Formation
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