112學年材料系-第十五週 大學部材料專題課程演講公告 (112年12月11日)
2023.12.05
112學年上學期 材料系大學部材料專題課程演講公告
題目：碳材料的表面工程用于增強感測和能源轉換應用 Surface Engineering of Carbon Materials for Enhanced Sensing and Energy Conversion Applications
主講人：王瑞琪 教授
現職：國立高雄大學 化學工程與材料工程學系 特聘教授
學歷：國立成功大學材料科學與工程 博士
時間：112 年 12 月 11日(一) 下午 3:10 – 5 :00
地點：成功大學成功校區材料新館一樓協勝發講堂(44101)
題目：碳材料的表面工程用于增強感測和能源轉換應用 Surface Engineering of Carbon Materials for Enhanced Sensing and Energy Conversion Applications
主講人：王瑞琪 教授
現職：國立高雄大學 化學工程與材料工程學系 特聘教授
學歷：國立成功大學材料科學與工程 博士
摘要：This study employs surface functionalization techniques to synthesize functional groups on the surface of carbon materials. By the molecular dipoles of these functional groups, the surface-enhanced Raman scattering (SERS) effect is utilized for excellent trace substance sensing. Additionally, the performance of solid-solid triboelectric nanogenerators (SS-TENG) and liquid-solid sliding direct current nanogenerators (LS-DCNG) is enhanced by the surface functionalization. Density functional theory (DFT) calculations indicate that binding copper ions to the surface of oxidized graphene generates a series of C-O-Cu functional groups, increasing the molecular dipole up to 26 times. Atomic force microscopy (AFM) validates the heightened dipole intensity and polarity reversal on the surface. This strong molecular dipole demonstrates excellent SERS sensing, surpassing the previous limitations of high sensitivity only achievable with precious metals. Furthermore, the surface dipoles of C-O-Cu contribute to the improved performance of SS-TENG through a unique gain mechanism resulting from surface band bending, a phenomenon reaffirmed by C-O-Cu surface dipoles. In addition, the treatment of graphite paper with fluorine plasma yields the C-F functional groups, enhancing the liquid-solid friction-induced electricity generation effect of the graphite paper. This results in a direct current generation of 3.2 μA/cm².
時間：112 年 12 月 11日(一) 下午 3:10 – 5 :00
地點：成功大學成功校區材料新館一樓協勝發講堂(44101)