Crystalline phase induced Raman enhancement on molybdenum carbides. Issue 11 (19th April 2022)

• Record Type: Journal Article
• Authors: Chen, Mengxin; Song, Chuqiao; Liang, Ce; Zhang, Bin; Sun, Yanchun; Li, Siwei; Lin, Lili; Xu, Ping
• Is Part Of: Inorganic chemistry frontiers. Volume 9:Issue 11(2022)
• Page Start: 2575
• Page End: 2582
• Publication Date: 2022-04-19
• Subjects: Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d2qi00543c
• Languages: English
• ISSNs: 2052-1553

Abstract

Abstract : β-Mo2 C, with a lower electron work function and a higher density of states near the Fermi level than α-MoC, affords a facilitated charge transfer and stronger Raman enhancement. Abstract : Here we demonstrate crystalline phase induced Raman enhancement on molybdenum carbide materials (β-Mo2 C and α-MoC). From all the studied target molecules (rhodamine 6G, crystal violet and methylene blue), the Raman enhancement on β-Mo2 C is 2–4 times higher than that on α-MoC. Spectroscopic and theoretical calculations reveal that β-Mo2 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.