Here we demonstrate crystalline phase induced Raman enhancement on molybdenum carbide materials(β-Mo_(2)C andα-MoC).From all the studied target molecules(rhodamine 6G,crystal violet and methylene blue),the Raman enh...Here we demonstrate crystalline phase induced Raman enhancement on molybdenum carbide materials(β-Mo_(2)C andα-MoC).From all the studied target molecules(rhodamine 6G,crystal violet and methylene blue),the Raman enhancement on β-Mo_(2)C is 2-4 times higher than that on α-MoC.Spectroscopic and theoretical calculations reveal that β-Mo_(2)C has a lower electron work function and a higher density of states near the Fermi level than α-MoC,which promotes the charge transfer and photo induced charge transfer processes from probe molecules to the substrate.展开更多
基金the financial support from the National Natural Science Foundation of China(No.21871065 and 22071038)the Heilongjiang Touyan Team(HITTY-20190033)the Interdisciplinary Research Foundation of HIT(IR2021205).
文摘Here we demonstrate crystalline phase induced Raman enhancement on molybdenum carbide materials(β-Mo_(2)C andα-MoC).From all the studied target molecules(rhodamine 6G,crystal violet and methylene blue),the Raman enhancement on β-Mo_(2)C is 2-4 times higher than that on α-MoC.Spectroscopic and theoretical calculations reveal that β-Mo_(2)C has a lower electron work function and a higher density of states near the Fermi level than α-MoC,which promotes the charge transfer and photo induced charge transfer processes from probe molecules to the substrate.
