biostudies-literatureAlotaibi NDeanship of Scientific Research, King Faisal University18652https://www.ebi.ac.uk/biostudies/studies/S-EPMC7596546biostudies-literatureUnknown10(1)Recently, carbon nanostructures are of high importance due to their unique characteristics and interesting applications. Pyrolysis of anthracene with cobalt complex Co(2,2'-bipy)Cl₂ (1), where (2,2'-bipy) is 2,2'-bipyridine, in the absence and presence of silica gave in high yield cobalt-carbon nanocomposite CoCNC (2) and CoCNC@SiO₂ (3) at 600 °C and 850 °C, respectively. They were characterized using SEM, TEM, PXRD, Raman and XPS. (3) and (2) contain core-shell cobalt(0)/cobalt oxide-graphite with or without silica support. PXRD indicates that (2) contains crystalline hexagonal α-Co and cubic β-Co phases while (3) contains only cubic β-Co phase and silica. The structure of (2) is 3D hierarchical carbon architecture wrapping spherical and elliptical cobalt nanoparticlScientific reportsNovel cobalt-carbon@silica adsorbent.PMC7596546Research Group (Grant No. 1811029)Al Otaibi NAlotaibi NHussain SGHammud HHPrakasam TfalseNovel cobalt-carbon@silica adsorbent.Recently, carbon nanostructures are of high importance due to their unique characteristics and interesting applications. Pyrolysis of anthracene with cobalt complex Co(2,2'-bipy)Cl₂ (1), where (2,2'-bipy) is 2,2'-bipyridine, in the absence and presence of silica gave in high yield cobalt-carbon nanocomposite CoCNC (2) and CoCNC@SiO₂ (3) at 600 °C and 850 °C, respectively. They were characterized using SEM, TEM, PXRD, Raman and XPS. (3) and (2) contain core-shell cobalt(0)/cobalt oxide-graphite with or without silica support. PXRD indicates that (2) contains crystalline hexagonal α-Co and cubic β-Co phases while (3) contains only cubic β-Co phase and silica. The structure of (2) is 3D hierarchical carbon architecture wrapping spherical and elliptical cobalt nanoparticl2020-01-01T00:00:00Z2020 Oct2026-07-16T02:41:47.108Z2025-04-19T10:33:56.044ZS-EPMC75965463312271410.1038/s41598-020-75367-0