[16a-PA2-1~60] 17 ナノカーボン（ポスター）

▲ [16a-PA2-53] Synthesis of Photoresponsive Graphene Oxide, Fullerene and Ag Nanoparticles Hybrid Structure by Liquid-Liquid Interfacial Precipitation

〇(D)Riteshkumar Vishwakarma¹, Golap Kalita¹, Mohd Zamri Yusop¹, Masaki Tanemura¹ (1.Nagoya Inst of Tech)

キーワード：Graphene-C60,Liquid-Liquid precipitation method,Photo induced charge transfer

Liquid-liquid interfacial precipitation (LLIP) technique has been widely investigated for synthesis of various structures of fullerene (C₆₀) crystals [1]. Here, we demonstrate a novel one-pot synthesis process of photoactive graphene oxide (GO)-C₆₀ and GO-C₆₀-Ag nanoparticles (NPs) hybrid material by the LLIP method. The GO-C₆₀-Ag NPs composite material was synthesized by simultaneously adding the AgNO₃ water solution (0.5 mg/ml) and GO in a toluene C₆₀ solution. Raman and absorption studies confirmed the π-π interaction of C₆₀ and GO in the composite material (Fig. 1a). Transmission electron microscopy (TEM) analysis indicated formation of square and rectangular shaped C₆₀ crystals on GO sheets along with Ag NPs (Fig. 1b). Again, formation of Ag NPs was confirmed by scanning transmission electron microscopy (STEM) mapping analysis. The current-voltage characteristic was investigated by two probe technique in dark and under illumination of light varying the bias voltage (-1 to 1 V). Significant photoconductivity in the hybridized material was observed owing to efficient charge transfer process in graphene-C₆₀, in presence of the Ag NPs