Results 51 to 60 of about 87,639 (320)

Effect of Pyrite on Thiosulfate Leaching of Gold and the Role of Ammonium Alcohol Polyvinyl Phosphate (AAPP)

open access: yesMetals, 2017
The effect of pyrite and the role of ammonium alcohol polyvinyl phosphate (AAPP) during gold leaching in ammoniacal thiosulfate solutions were investigated using pure gold foils.
Xiaoliang Liu   +7 more
doaj   +1 more source

Isotopically “heavy” pyrite in marine sediments due to high sedimentation rates and non-steady-state deposition

open access: yesGeology, 2021
Sedimentary pyrite formation links the global biogeochemical cycles of carbon, sulfur, and iron, which, in turn, modulate the redox state of the planet’s surficial environment over geological time scales.
Jia-Rui Liu   +10 more
semanticscholar   +1 more source

Two‐Dimensional Quaternary Alloys of (RuMoVNb)Se2 for Superior Hydrogen Evolution Reaction Catalysis

open access: yesAdvanced Science, EarlyView.
Composition‐tuned (RuMoVNb)Se2 quaternary alloy nanosheets are synthesized via colloidal reactions. Incorporation of Ru into (MoVNb)Se2 ternary alloys results in more metallic electronic structures and significantly enhances their electrocatalytic activity for the hydrogen evolution reaction (HER) under alkaline, acidic, and neutral conditions.
Junaid Ihsan   +11 more
wiley   +1 more source

Sunflower structure of pyrite in Lignite of Western Kachchh, Gujarat (India): Insights on its origin and mechanism

open access: yesInternational Journal of Coal Science & Technology
Textural analysis of pyrite has been carried out in the lignites of Kachchh Basin to decipher its micro-morphological character. The study entails the intermediate stage and authigenic sunflower structured pyrite.
Ashish Kumar Singh   +3 more
doaj   +1 more source

Microscopic characteristics and geological significance of pyrite in shales of the Wufeng-Longmaxi formations, southeastern Chongqing, China

open access: yesEnergy Geoscience
Shales of the Wufeng-Longmaxi formations in the basin-margin transition zone of southeastern Chongqing, China are characterized by high organic matter content and a significant presence of pyrite development.
Xiao Cai   +8 more
doaj   +1 more source

Highly efficient removal of Cr(VI) by hexapod-like pyrite nanosheet clusters

open access: yes, 2021
Pyrite nanomaterials show an excellent performance in remediating Cr(VI) contaminated wastewater. However, the high surface reactivity makes them easy to agglomerate to reduce their removal efficiency for Cr(VI).
Nie, Xin   +6 more
core   +1 more source

Interfacial Electronic Modulation of Vacancy‐Stabilized Pt Sites in Mo‐NiSeO4/NiSe2 Heterostructures for Industrial Alkaline Water Electrolysis

open access: yesAdvanced Energy Materials, EarlyView.
A vacancy‐stabilized Pt,Mo‐NiSeO4/NiSe2@Co2P heterostructure with atomically dispersed Pt sites and Mo‐regulated electronic structure enables efficient bifunctional water splitting. Strong interfacial coupling and defect‐assisted Pt stabilization promote rapid charge transfer and optimized intermediate adsorption, delivering outstanding HER/OER ...
Thokchom Anjali Devi   +7 more
wiley   +1 more source

Mechanisms of Pyrite Formation Promoted by Sulfate-Reducing Bacteria in Pure Culture

open access: yesFrontiers in Earth Science, 2020
Pyrite, or iron disulfide, is the most common sulfide mineral on the Earth’s surface and is widespread through the geological record. Because sulfides are mainly produced by sulfate-reducing bacteria (SRB) in modern sedimentary environments ...
A. Duverger   +5 more
semanticscholar   +1 more source

Produção de sulfato ferroso a partir da pirita: desenvolvimento sustentável [PDF]

open access: yes, 2008
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Química.Esta tese de doutorado objetivou o estudo da pirita contida nos rejeitos piritosos da região sul catarinense, considerados os ...
Peterson, Michael
core  

Aggregative growth of quasi-octahedral iron pyrite mesocrystals in a polyol solution through oriented attachment [PDF]

open access: yes, 2016
Iron pyrite (FeS2) mesocrystals were synthesized in polyol solution through hot-injection method. The synthesized iron pyrite is in quasi-octahedral shape with exposed {111} facets and possesses typical features of mesocrystals, i.e. rough surface, small
Zhu, Jianxi   +5 more
core   +1 more source

Home - About - Disclaimer - Privacy