Photonic Sensors, Volume. 3, Issue 2, 168(2013)
Room Temperature Sol-Gel Fabrication and Functionalization for Sensor Applications
The structure and physical properties of a thin titania sol-gel layer prepared on silicon and silica surfaces were examined. Spectroscopic (FTIR, UV-VIS spectroscopy), refractive index (ellipsometry) and microscopic (light microscopy and SEM/EDS) tools were used to examine both chemical uniformity and physical uniformity of the sol-gel glass layers. The conditions for the fabrication of uniform layers were established, and room temperature dopant incorporation was examined. The absorption bands of porphyrin-containing titania sol-gel layers were characterized. By addition of a metal salt to the titania layer, it was possible to metallate the free-base porphyrin within and change the UV-VIS absorbance of the porphyrin, the basis of metal detection using porphyrins. The metalloporphyrins were detected by localized laser ablation inductive coupled mass spectroscopy (LA-ICP-MS), indicating fairly uniform distribution of metals across the titania surface.
Get Citation
Copy Citation Text
George HUYANG, John CANNING, Ingemar PETERMANN, David BISHOP, Andrew McDONAGH, Maxwell J. CROSSLEY. Room Temperature Sol-Gel Fabrication and Functionalization for Sensor Applications[J]. Photonic Sensors, 2013, 3(2): 168
Category: Regular
Received: Jun. 23, 2012
Accepted: Jul. 5, 2012
Published Online: Oct. 24, 2013
The Author Email: CANNING John (john.canning@sydney.edu.au)