Results 161 to 170 of about 118,822 (346)

Synthesis of Hematite Using Different Additives and The Fabrication of Hematite/SiO₂ Composite

Chemistry and Materials
Hematite (α-Fe₂O₃) is a widely studied iron oxide due to its broad functional versatility in catalysis, sensing, and environmental applications. However, controlling its morphology and crystallinity remains a challenge, which limits its performance in ...
Shirly Harissyah Alfiani, Qori'atun Ni'mah Salsabila, Reinardo Ramawijaya Widakusuma, Agus Purwanto, Ph.D, Rifqi Almusawi Rafsanjani, Habib Muhammad Zapar, Bagaskoro Pranata Ardhi   +6 more
doaj   +1 more source

Electrochemical Formation of Fe(IV)=O Derived from H₂O₂ on a Hematite Electrode as an Active Catalytic Site for Selective Hydrocarbon Oxidation Reactions [PDF]

, 2019
Kazuhide Kamiya, Akito Kuwabara, Takashi Harada, Shuji Nakanishi   +3 more
openalex   +1 more source

Substitution of Fe3+ into anorthite in oxidized, Al‐deficient ferrobasaltic systems with implications for the petrogenesis of angrite meteorites

Meteoritics &Planetary Science, EarlyView.
Abstract Angrite meteorites are critically silica‐undersaturated igneous rocks with high Ca/Al and Fe/Mg, along with depletion in volatile lithophile elements Na and K such that they crystallize anorthite along with olivine and calcic pyroxene. The anorthite in angrites contains substantial Fe, and in NWA 1670 and NWA 1296, it is present at major ...
Seann J. McKibbin, Dominique Tanner, Hugh St. C. O'Neill   +2 more
wiley   +1 more source

Microbially generated ferruginous crusts: A potential biosignature of continental input in coastal settings

Sedimentology, EarlyView.
ABSTRACT Thin ferruginous sandy crusts are common on top of sandstone beds in the Early Permian post‐glacial deposits of the Paraná Basin in southern Brazil. These crusts usually preserve wrinkle structures, suggesting that they might be a product of microbial mediation.
Patrícia Weschenfelder, Renata Guimarães Netto, Alisson Klayton Martins   +2 more
wiley   +1 more source

Hematene Nanoplatelets with Enhanced Visible Light Absorption; the Role of Aromatic Molecules

Molecules
Hematite has been considered an important candidate for the development of an efficient photoelectrocatalytic water-splitting system. One of the most serious obstacles that limits the efficiency of hematite is low absorption capacity in visible light ...
Georgios Alpochoritis, Argiris Kolokithas Ntoukas, Vasilios I. Georgakilas   +2 more
doaj   +1 more source

Sonochemical Synthesis of Hematite Nanoparticles

Chemistry Journal of Moldova, 2015
Hematite nanoparticles were prepared by a procedure consisting in sonication of μ3-oxo trinuclear iron(III) acetate of composition [Fe3O(OOCCH3)6(H2O)3]NO3∙4H2O, {Fe3O}NO3, as iron source, in strong basic conditions followed by thermal treatment at 600˚C. The formation of the hematite was confirmed by IR spectroscopy, X-ray powder diffraction and Raman
openaire   +3 more sources

Confinement and surface effects on the physical properties of rhombohedral-shape hematite (α-Fe 2 O 3 ) nanocrystals

, 2016
Carlos Luna, Aída D. Cuan-Guerra, Enrique Díaz Barriga‐Castro, Nuria O. Núñez, Raquel Mendoza‐Reséndez   +4 more
openalex   +2 more sources

Surface-chemical interactions between apatite and hematite in aqueous suspensions

, 2020
Naeimeh Ghaffari Touran
openalex   +1 more source

Research Progress on the Effects of Reducing Agents and Dephosphorization Agents on Direct Reduction-Magnetic Separation of High Phosphorus Oolitic Hematite

Kuangchan zonghe liyong
This is an article in the field of mining engineering. The effects of reducing agent and dephosphorization agent on the direct reduction of high phosphorus oolitic hematite were reviewed.
Hongda XU, Tichang SUN, Shichao WU, Xiaoxiao LIAN, Wenli HAN, Zongyi DENG   +5 more
doaj   +1 more source

Hematite Nanoparticles-Modified Electrode Based Electrochemical Sensing Platform for Dopamine [PDF]

, 2014
Khosro Zangeneh Kamali, Alagarsamy Pandikumar, Nay Ming Huang, Boon Hoong Ong, ‬Hong Ngee Lim   +4 more
openalex   +1 more source