ArticleScientific reports2026
A low-cost calcium silicate hydrate with an exceptionally large sequestration capacity for aqueous divalent nickel.
Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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5 authors.
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Abstract
Nickel (Ni) is a high-value resource in industrial economies with essential uses in ferrous and non-ferrous alloys, electric-vehicle batteries, magnets, and catalysts, but has acute supply-chain risks and is classified as a critical material (or mineral). Here we show that large-scale spontaneous sequestration of nickel occurs in a low-cost calcium silicate hydrate material (CS) under mild conditions. CS takes up Ni[Formula: see text] ions rapidly from aqueous solution to achieve loadings as high as 440 kg Ni per tonne CS. This chemistry brings new opportunities in nickel recycling, recovery and environmental clean-up. The Ni sequestration reaction of CS is similar to that previously described (A Hamilton et al., Scientific Reports (2024) 14:7052) for cobalt, although it is about four times faster. Full kinetic and reaction product data are reported. The reaction provides an easy synthesis route to a new Ni-phyllosilicate with a high metal loading, one of a class of materials in active development as catalysts for process-scale water-splitting and reforming reactions.
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