Changes in the solid-state properties of bismuth iron oxide during the photocatalytic reformation of formic acid

2019 ◽  
Vol 326 ◽  
pp. 22-29 ◽  
Author(s):  
Wegdan Ramadan ◽  
Ralf Dillert ◽  
Julian Koch ◽  
Christoph Tegenkamp ◽  
Detlef W. Bahnemann
Keyword(s):  
Iron Oxide ◽  
Solid State ◽  
Formic Acid ◽  
Bismuth Iron Oxide

Iron oxide pigments

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Gerhard Pfaff
Keyword(s):  
Iron Oxide ◽  
Solid State ◽  
Large Scale ◽  
Construction Materials ◽  
High Importance ◽  
Precipitation Processes ◽  
Iron Oxide Pigments ◽  
Natural And Synthetic

AbstractNatural and synthetic iron oxide pigments are by far the most important colored pigments. Their high importance is based on the variety of stable colors ranging from yellow via orange, red and brown to black. Iron oxide yellow (α-FeOOH), iron oxide red (α-Fe2O3) and iron oxide black (Fe3O4) are the most important representatives of the iron oxide pigments. Synthetic iron oxide pigments are produced industrially on a large scale by solid-state processes, precipitation processes and by the Laux process. Main advantages of synthetic iron oxide pigments compared with natural types are their pure hue, the consistent, reproducible quality and their tinting strength. Iron oxide pigments are mainly used in construction materials, paints, coatings, and plastics, but also in cosmetics, pharmaceuticals and special applications such as ceramics, magnetic coatings and toners.

A comparison of NO2 sensing characteristics of α- and γ-iron oxide-based solid-state gas sensors

2020 ◽  
Vol 126 (10) ◽  
Author(s):  
M. Hjiri ◽  
N. Zahmouli ◽  
K. Khouzami ◽  
L. El Mir ◽  
M. S. Aida ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Solid State ◽  
Gas Sensors ◽  
Sensing Characteristics

Formation of bismuth iron oxide based core–shell structures and their dielectric, ferroelectric and magnetic properties

2019 ◽  
Vol 7 (5) ◽  
pp. 1280-1291 ◽  
Author(s):  
Alaka Panda ◽  
R. Govindaraj ◽  
R. Mythili ◽  
G. Amarendra
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Magnetic Properties ◽  
Iron Oxide ◽  
Shell Structures ◽  
Core Shell ◽  
Bismuth Iron Oxide ◽  
The Core ◽  
Shell Nanostructures ◽  
Transmission Electron

Bismuth and iron oxides subjected to ball milling followed by controlled annealing treatments showed the formation of core–shell nanostructures with Bi2Fe4O9 as the core and a shell of BiFeO3 and Bi25FeO40 phases as deduced based on the analysis of transmission electron microscopy results.

Three dimensional iron oxide/graphene aerogel hybrids as all-solid-state flexible supercapacitor electrodes

RSC Advances ◽  
2016 ◽  
Vol 6 (64) ◽  
pp. 58994-59000 ◽  
Author(s):  
Abdul Muqsit Khattak ◽  
Huajie Yin ◽  
Zahid Ali Ghazi ◽  
Bin Liang ◽  
Azhar Iqbal ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Solid State ◽  
Specific Capacitance ◽  
Electrode Materials ◽  
Three Dimensional ◽  
High Specific Capacitance ◽  
Graphene Aerogel ◽  
Flexible Supercapacitor

Three dimensional iron oxide/graphene aerogel hybrid (Fe2O3/GA) was synthesized and used as electrode materials in flexible supercapacitor devices, which show high specific capacitance of 440 F g−1 with 89% capacitance retention after 2200 cycles.

Solid State NMR Studies of the Adsorbed States of Formic Acid on Y Zeolites

1980 ◽  
Vol 3 ◽  
Author(s):  
T. Michael Duncan ◽  
Robert W. Vaughan
Keyword(s):  
Solid State ◽  
Formic Acid ◽  
Solid State Nmr ◽  
Double Resonance ◽  
Chemical Shift Anisotropy ◽  
Surface States ◽  
Cross Polarization ◽  
Nmr Studies ◽  
Y Zeolites ◽  
Nmr Techniques

ABSTRACTSeveral multiple-pulse double-resonance NMR techniques have been applied to isolate and characterize the spectra of the adsorbed states of formic acid on two Y zeolites. The two surface states, bidentatT3 and ynidentate, possess different motional properties and 13C - H cross-polarization techniques may be used to separate the spectra. The 13C chemical shift anisotropy is founa to iorrelate with the symmetry of the formate species. The H spectrum of the carbonyl hydrogen, selectively observed with the dipolardifference method, indicates that this hydrogen becomes more acidic upon adsorption.

Enhanced structural and magnetic ordering in as-synthesized Ca doped bismuth iron oxide nanoceramics

2020 ◽  
Vol 832 ◽  
pp. 154725 ◽  
Author(s):  
M. Tahir ◽  
Saira Riaz ◽  
Usman Khan ◽  
S. Sajjad Hussain ◽  
Adeela Nairan ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Magnetic Ordering ◽  
Bismuth Iron Oxide
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