Improving Ni(OH)2 electrocatalysis with graphene quantum dots
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Advanced Materials 2016, 28(25), 5045-5053
Sulfur Doping Induces Strong Ferromagnetic Ordering in Graphene: Effect of Concentration and Substitution Mechanism
- Jiri Tucek, Piotr Blonski, Zdeněk Sofer, Petr Simek, Martin Petr, Martin Pumera, Michal Otyepka, Radek Zboril*
Imprinting ferromagnetism to a graphene structure by substitution of carbon atoms with sulfur is reported. S-doped graphene (4.2 at%) shows strong ferromagnetic properties with saturation magnetization exceeding 5.5 emu g(-1) at 2 K, which is among the highest values reported for any sp-based system. The remarkable magnetic response is attributed to delocalization of electrons from sulfur injected into the graphene conduction band.
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