Abstract
Magnetically separable Ni embedded on graphitic mesoporous carbon (NMC) material was fabricated through a facile “sol–gel” route using glucose, nickle nitrate, poly(ethylene glycol)–poly(propylene glycol)–poly(ethylene glycol) (P123) and tetraethyl orthosilicate as carbon source, catalyst and magnetic precursor, soft template and porogen. The obtained NMC material exhibited highly graphitic degree with high surface area of 790 m2 g−1, large pore size at 3.9 nm and pore volume of 0.69 cm3 g−1. The saturation magnetization was enhanced to 6.82 emu g−1 because of aggregation of magnetic Ni particles to clusters. NMC material showed excellent removal to Rhodamine B and the adsorption capacity reached to 168.1 mg g−1 within 120 min. NMC material could be easily separated by an external magnet and reused after ethanol extraction.
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