The nature of plasmon-exciton co-driven surface catalytic reaction 专业:凝聚态物理 导师:王培杰 报告人:刘文 时间:2017.10.27
目录 研究背景 实验准备 实验过程 SERS of PNA CONTENTS G-SERS of PNA 实验结论 01 2-1 02 2-2 SERS of PNA 目录 2-3 G-SERS of PNA CONTENTS 03 实验结论
The First Part 研究背景 We are pursuing the best!
研究背景 We are pursuing the best!
研究背景 We are pursuing the best!
The Second Part 实验过程 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!
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-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
The Third Part 结论 We are pursuing the best!
02 01 结论 We are pursuing the best! 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. 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.
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