Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8955268 | Applied Surface Science | 2019 | 6 Pages |
Abstract
The surface-enhanced Raman scattering (SERS) study on semiconductor material has attracted much attention, but the traditional semiconductor materials possess low SERS sensitivity and single function, which cannot meet the need of people very well. Here, the ordered three-dimensional CdSe-sensitized TiO2 (CdSe-TiO2) composite film with inverse opal structure (IOS) and multifunction was synthesized successfully. The as-prepared CdSe-TiO2 IOS film was first used as the excellent SERS substrate and photoelectrochemical material. The synergistic effect of slow photons, multiple scattering and CdSe sensitization make the SERS substrate more sensitive. The detection limit of the methylene blue (MB) on CdSe-TiO2 IOS film can be as low as 7â¯Ãâ¯10â9â¯M. In addition, CdSe-TiO2 IOS exhibits excellent photoelectric converting performance, the photocurrent density of CdSe-TiO2 IOS can achieve 0.924â¯mA/cm2 under chopped light illumination at a fixed bias of 0â¯V versus Ag/AgCl. The above performance enhancement of CdSe-TiO2 IOS film makes it becoming a promising multifunctional material to be used in SERS detection and photoelectrochemical field.
Related Topics
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Authors
Xueyan Wang, Juan Li, Xinna Gao, Yuhua Shen, Anjian Xie,