Biomass-Derived Thermally Annealed Interconnected Sulfur-Doped Graphene as a Shield against Electromagnetic Interference

• DOI: 10.1021/acsami.6b00418
• Publication Date: 2016-03-22T14:44:24Z
• Authors: Faisal Shahzad; Pradip Kumar; Yoon-Hyun Kim; Soon Man Hong; Chong Min Koo
• Keywords: 02 engineering and technology; 0210 nano-technology; 7. Clean energy

Electrically conductive thin carbon materials have attracted remarkable interest as a shielding material to mitigate the electromagnetic interference (EMI) produced by many telecommunication devices. Herein, we developed sulfur-doped reduced graphene oxide (SrGO) with high electrical conductivity through using novel biomass, mushroom-based sulfur compound (lenthionine) via two-step thermal treatment. The resultant SrGO product exhibited excellent of 311 S cm–1, which is 52% larger than 205 cm–1 for undoped rGO. also an EMI effectiveness 38.6 dB, 61% 24.4 dB measured Analytical examinations indicate that content 1.95 atom % acts n-type dopant, increasing and, therefore, doped graphene.