Sulfur‐ and Nitrogen‐Doped Titania Biomaterials via APCVD

A comparison between two of the best performing photocatalysts in a series of nitrogen‐ and sulfur‐doped titania visible light photocatalysts prepared by atmospheric pressure (AP)CVD is made against a sample of pure undoped titania. This study compares the ability of the samples to photo‐oxidize stearic acid and kill Escherichia coli bacteria using white light sources commonly found in UK hospitals. It is shown that both nitrogen‐ and sulfur‐doped photocatalysts are bioactive with extraordinarily similar properties though the nitrogen‐doped samples are found to perform very slightly better than the sulfur‐doped samples. These materials are suggested for use as anti‐microbial surfaces in healthcare environments and as self‐cleaning glass.