Structural Formation and Photocatalytic Activity of Magnetron Sputtered Titania and Doped-Titania Coatings

Molecules

Peter J. Kelly³  Glen T. West³  Marina Ratova¹  Leanne Fisher²  Soheyla Ostovarpour³  Joanna Verran² 

[1] School of Chemistry and Chemical Engineering, Queen’s University Belfast, Belfast BT9 5AG, UK; E-Mail:;School of Healthcare Science, Manchester Metropolitan University, Manchester M1 5GD, UK; E-Mails:;Surface Engineering Group, Dalton Research Institute, Manchester Metropolitan University, Manchester M1 5GD, UK; E-Mails:

关键词: titanium dioxide;    photocatalytic coatings;    magnetron sputtering;    doping;    methylene blue;    HiPIMS;    antimicrobial activity;   

DOI  :  10.3390/molecules191016327

来源: mdpi

【 摘 要 】

Titania and doped-titania coatings can be deposited by a wide range of techniques; this paper will concentrate on magnetron sputtering techniques, including “conventional” reactive co-sputtering from multiple metal targets and the recently introduced high power impulse magnetron sputtering (HiPIMS). The latter has been shown to deliver a relatively low thermal flux to the substrate, whilst still allowing the direct deposition of crystalline titania coatings and, therefore, offers the potential to deposit photocatalytically active titania coatings directly onto thermally sensitive substrates. The deposition of coatings via these techniques will be discussed, as will the characterisation of the coatings by XRD, SEM, EDX, optical spectroscopy, etc. The assessment of photocatalytic activity and photoactivity through the decomposition of an organic dye (methylene blue), the inactivation of E. coli microorganisms and the measurement of water contact angles will be described. The impact of different deposition technologies, doping and co-doping strategies on coating structure and activity will be also considered.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.