Facile one-pot preparation of goethite/parabutlerite nanocomposites and their removal properties and mechanism toward As(V) ions

Fang, Fang; Jia, Yong; Wu, Pei-Yun; Zhang, Qun-Ying; Jiang, Yin-Ping; Su, Zhou; Peng, Daiyin

doi:10.1016/j.apsusc.2014.10.174

Cited by 11 publications

(1 citation statement)

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“…One of the strongest candidates was parabutlerite (Fe 3+ SO 4 (OH)•H 2 O), an orthorhombic iron sulfate [51]. Parabutlerite has been shown to form with goethite under hydrothermal conditions, such as the prebiotic setup used here [52] and has been found in sulfide ores wherein the original mineral could…”

Section: Fes Addition Observationsmentioning

confidence: 94%

RETRACTED: Metal Catalysis Acting on Nitriles in Early Earth Hydrothermal Systems

Sturtz

House

2023

Life

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Hydrothermal systems are areas in which heated fluids and organic molecules rush through basaltic material rich in metals and minerals. By studying malononitrile and acetonitrile, we examine the effects of metal and mineral nanoparticles on nitrile compounds in anoxic, hydrothermal conditions representing a prebiotic environment of early Earth. Polymerization, reduction, cyclization, and a phenomenon colloquially known as ‘chemical gardening’ (structure building via reprecipitation of metal compounds or complexing with organics) are all potential outcomes with the addition of metals and minerals. Reduction occurs with the addition of rhodium (Rh) or iron (II) sulfide (FeS), with positive identification of ethanol and ethylamine forming from acetonitrile reduction. We find that polymerization and insoluble product formation were associated with oxide minerals, metallic nickel (Ni), and metallic cobalt (Co) acting as catalysts. Oxide minerals strongly promoted polymerization into insoluble, tar-like products of nitriles. FeS, iron-nickel alloy (FeNi), and rhodium are unique cases that appear to act as reagents by actively participating in chemical gardening without returning to their initial state. Further, FeS tentatively had a phase change into the mineral parabutlerite. This research aims to identify metals and metal minerals that could best serve nitrile catalysis and reactions on early Earth.

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Section: Fes Addition Observationsmentioning

confidence: 94%