Results 41 to 50 of about 118,822 (346)

HEMATITE-CARBONATE ROCKS OF THE YUBILEYNOE MASSIVE SULFIDE DEPOSIT (SOUTH URALS): EVIDENCE OF REPLACEMENT OF SULFIDE CLASTS AND HYALOCLASTS [PDF]

Минералогия
The article considers textural and structural features of hematite-carbonate rocks associated with carbonate-sulfide clastic ores of the Yubileynoe massive sulfide deposit, South Urals.
A.S. Tseluyko, N.R. Ayupova, D.A. Artemyev, M.A. Rassomakhin, V.A. Kotlyarov   +4 more
doaj   +1 more source

Facile Adjustment of Exposed Crystal Facet of Hematite Derived-From Goethite to Enhance Cr (VI) Sorption

Crystals, 2023
The (110) facets of hematite have excellent adsorption performance for chromium. We aim to obtain hematite with a large specific surface area and exposed (110) facets by using natural needle-like goethite as the precursor.
Yuxin Li, Guocheng Lv, Limei Wu, Zhaohui Li, Libing Liao   +4 more
doaj   +1 more source

Conduction Band of Hematite Can Mediate Cytochrome Reduction by Fe(II) Under Dark and Anoxic Conditions.

Environmental Science and Technology, 2020
While it was recently reported that the conduction band of iron minerals can mediate electron transfer between Fe(II) and different Fe(III) lattice sites during Fe(II)-catalyzed mineral transformation, it is unclear whether such a conduction-band ...
Tongxu Liu, Ying Wang, Chongxuan Liu, Xiaomin Li, Kuan-Hua Cheng, Yundang Wu, L. Fang, Fangbai Li, Chengshuai Liu   +8 more
semanticscholar   +1 more source

Revealing the synergy of Sn insertion in hematite for next‐generation solar water splitting nanoceramics

International Journal of Ceramic Engineering & Science, 2020
Hematite nanoceramics is considered as one of the most promised materials for photoelectrochemical (PEC) water splitting due to its remarkable characteristics such as low band gap, earth abundant composition and stability. In general, the hematite design
Karen C. Bedin, Andre L. M. Freitas, Aryane Tofanello, Ingrid Rodríguez‐Gutiérrez, Flavio L. Souza   +4 more
doaj   +1 more source

Iron oxidation at low temperature (260–500 C) in air and the effect of water vapor [PDF]

, 2009
The oxidation of iron has been studied at low temperatures (between 260 and 500 C) in dry air or air with 2 vol% H2O, in the framework of research on dry corrosion of nuclear waste containers during long-term interim storage.
A Atkinson, A Atkinson, A Atkinson, A Atkinson, A Galerie, A Goswami, AG Crouch, AG Goursat, C Desgranges, C Wagner, C Wagner, C. Desgranges, D Caplan, D Caplan, D Caplan, D Caplan, D Caplan, D Monceau, D. Monceau, D. Poquillon, DA Channing, DA Voss, DE Davies, GM Raynaud, H Sakai, H Sakai, JE Castle, L Himmel, M Hänsel, M. C. Lafont, MH Davies, MH Davies, MJ Graham, MJ Graham, ML Zheludkevich, N Bertrand, N. Bertrand, R Dieckmann, R Dieckmann, R Francis, R Lindner, R Peraldi, RF Tylecote, RJ Hussey, RJ Hussey, RY Chen, S Mrowec, S Taniguchi, SN Basu, T Maruyama, WE Boggs   +50 more
core   +2 more sources

Green hematite depression for reverse selective flotation separation from quartz by locust bean gum

Scientific Reports, 2023
Reverse cationic flotation is currently the main processing technique for upgrading fine hematite from silicates. Flotation is known as an efficient method of mineral enrichment that deals with possibly hazardous chemicals.
Mehrdad Kordloo, Gholamreza Khodadadmahmoudi, Ehsan Ebrahimi, Ali Rezaei, Arash Tohry, Saeed Chehreh Chelgani   +5 more
doaj   +1 more source

Elaboration and characterization of nanoplate structured alpha-Fe2O3 films by Ag3PO4 [PDF]

, 2016
A new strategy for surface treatment of hematite nanoplates for efficient photoelectrochemical (PEC) performances is proposed. Silver orthophosphate (Ag₃PO₄) has been adopted to mediate the formation of α-Fe₂O₃ films. Phosphate ions in Ag₃PO₄ is found to
Ke, Xuebin, Ren, Yajun, Wang, Hongyan, Wu, Quanping, Xue, Song, Zhang, Chuangli   +5 more
core   +2 more sources

Parallel multi-stacked photoanodes of Sb-doped p–n homojunction hematite with near-theoretical solar conversion efficiency

Nature Communications
Developing transparent and efficient photoanodes is a challenging but essential task in tandem photoelectrochemical cell for unassisted solar water splitting without an external bias.
Chenyang Xu, Hongxin Wang, Hongying Guo, Ke Liang, Yuanming Zhang, Weicong Li, Junze Chen, Jae Sung Lee, Hemin Zhang   +8 more
semanticscholar   +1 more source

Thermal conductivity calculation in anisotropic crystals by molecular dynamics : application to alpha-Fe2O3

, 2017
In this work, we aim to study the thermal properties of materials using classical molecular dynamics simulations and specialized numerical methods. We focus primarily on the thermal conductivity \kappa using non-equilibrium molecular dynamics to study ...
Jund, Philippe, Severin, Jonathan
core   +2 more sources

Low Temperature Oxidation of pure Iron : Growth kinetics and scale Morphologies [PDF]

, 2004
Isothermal oxidation of pure iron has been performed in air at atmospheric pressure between 260°C and 500°C. Growth kinetics are accurately analysed and scale morphologies are investigated by SEM and TEM observations. The calculation of the variations of
Bertrand, Nathalie, Desgranges, Clara, Gauvain, Danielle, Monceau, Daniel, Poquillon, Dominique   +4 more
core   +1 more source