第二十期硕博论坛最佳报告人刘文ppt.ppt

C 专业：凝聚态物理 导师：王培杰 报告人：刘文 时间：2017.10.27 The nature of plasmon-exciton co-driven surface catalytic reaction 目录 CONTENTS 01 研究背景 02 实验过程 03 实验结论 2-1 实验准备 2-2 SERS of PNA 2-3 G-SERS of PNA 研究背景 The First Part We are pursuing the best! 研究背景 We are pursuing the best! 研究背景 We are pursuing the best! 实验过程 The Second Part We are pursuing the best! 实验过程-实验准备-实验装置 We are pursuing the best! 实验过程-实验准备-分子选择 We are pursuing the best! 实验过程-实验准备-基底表征 We are pursuing the best! 实验过程-实验准备-基底表征 We are pursuing the best! 粗糙银电极光吸收反射模式光谱图： 粗糙后的银电极表面粒径均 匀，粗糙度较好，局域表面 等离子体共振峰峰位大约在560nm处，相比785nm的激光波长，更接近于532nm。 实验过程-SERS of PNA We are pursuing the best! 实验过程-SERS of PNA We are pursuing the best! 实验过程-SERS of PNA We are pursuing the best! 实验过程-G-SERS of PNA We are pursuing the best! 实验过程-G-SERS of PNA We are pursuing the best! 实验过程-G-SERS of PNA We are pursuing the best! 实验过程-G-SERS of PNA We are pursuing the best! PH=12 PH=3 实验过程-G-SERS of PNA We are pursuing the best! 785nm 实验过程-SERS/G-SERS of PNA 532nm 785nm 结论 The Third Part We are pursuing the best! 02 The mechanism of plasmon-exciton co-driven chemical reaction in electrochemical SERS is revealed, where the incident laser is 785 nm. In the graphene-Ag hybrid system, the Fermi level of hybrid system can be increased 0.451 eV, due to the existence of graphene. Hence, the G-SERS has more advantages and high efficiency than SERS in the field of surface catalytic reactions. 01 The plasmon–exciton co-driven surface catalytic reactions in electrochemical G-SERS were reported, which demonstrate great advantages for plasmon–exciton co-driven chemical reactions on G-SERS in liquid environments, and which can be potentially applied in the surface spectral analysis in electrochemical environments. 结论 We are pursuing the best! C 谢谢观看与聆听 专业：凝聚态物理 导师：王培杰 报告人：刘文 时间：2017.10.27