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AssigneeInstitute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences
InventorsFangbai Li, Liping Fang, Kai Liu
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An iron-carbon composite material and a preparation method thereof are disclosed. The iron-carbon composite material includes a three-layer core-shell structure, which successively includes a porous graphite carbon outer layer, an iron carbide intermediate layer and a nano zero-valent iron core from outside to inside. The present invention wraps nano zero-valent iron in porous graphite carbon and iron carbide, which can prevent the oxidation of nano zero-valent iron, while iron carbide effectively improves the ability to fix arsenic, realizing high efficiency and long-term use of nano zero-valent iron. Iron carbide may effectively adsorb and fix arsenic, and especially efficiently oxidize As(III) to relatively low-toxic As(V).
A method for preparing an iron-carbon composite material, wherein the iron-carbon composite material has a three-layer core-shell structure, comprising a porous graphite carbon outer layer, an iron carbide intermediate layer, and a nano zero-valent iron core in sequence from outside to inside, the method comprising the following steps:
Dependencies are inferred from the claim text.