LPC – Novel Process for the Production of Photocatalytic Surfaces

Abstract

This study demonstrates a low-pressure coating (LPC) technique for the deposition of titania films. In this process, compressed air is used to accelerate angular titania feedstock into a substrate such as stainless steel, producing a photoactive surface consisting of embedded titania particles. The method is relatively inexpensive, requiring only the basic materials and an air supply. A range of LPC titania coatings were produced, varying nozzle stand-off distance, air pressure, and substrate exposure time. Samples are characterized via SEM and EDX analysis, photocurrent measurements, and NOX removal testing.