CdSe nanocrystals were prepared within a template of mesoporous silica (MS) spheres via chemical reaction, and then the as-synthesized CdSe/MS composites were dip coated on an optically transparent electrode. The photoelectric properties of CdSe/MS composite film were examined under ultraviolet (UV) illumination at the excitation wavelength of 365 nm. The CdSe/MS composite can facilitate charge rectification and minimize charge recombination as shown by its higher photocurrent. Most importantly, horseradish peroxidase (HRP)-functionalized CdSe/MS-modified electrode (HRP/CdSe/MS) had a stronger response toward hydrogen peroxide (H 2O 2) under UV illumination than in the dark. The result demonstrates the potential application of HRP/CdSe/MS composite film as a novel biosensor for monitoring H 2O 2 under UV illumination.
Bibliographical noteFunding Information:
This work was supported by the National Natural Science Foundation of China (20925621, 20976054), the Key Project of Science and Technology for Ministry of Education (107045), the Innovation Program of Shanghai Municipal Education Commission (09ZZ58), the Program of Shanghai Subject Chief Scientist (08XD1401500), the Shuguang Scholar-Tracking Foundation of Shanghai (08GG09), and the Shanghai Leading Academic Discipline Project (B502).
- CdSe/silica mesoporous
- Horseradish peroxidase
- Photoelectric properties