Preprint Review Version 1 NOT YET PEER-REVIEWED

Accelerated Antibacterial Inactivation on 2D Cu-Titania Surfaces: Latest Developments and Critical Issues

  1. Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-GPAO, Station 6, CH-1015, Lausanne, Switzerland
Version 1 : Received: 15 September 2016 / Approved: 16 September 2016 / Online: 16 September 2016 (13:31:00 CEST)

How to cite: Rtimi, S.; Kiwi, J.; Pulgarin, C. Accelerated Antibacterial Inactivation on 2D Cu-Titania Surfaces: Latest Developments and Critical Issues. Preprints 2016, 2016090050 (doi: 10.20944/preprints201609.0050.v1). Rtimi, S.; Kiwi, J.; Pulgarin, C. Accelerated Antibacterial Inactivation on 2D Cu-Titania Surfaces: Latest Developments and Critical Issues. Preprints 2016, 2016090050 (doi: 10.20944/preprints201609.0050.v1).

Abstract

This review focuses on Cu/TiO2 sequentially and Cu-TiO2 co-sputtered catalytic/photocatalytic surfaces leading to bacterial inactivation discussing their stability, synthesis, adhesion and antibacterial kinetics. The intervention of TiO2, Cu and the synergic effect of Cu and TiO2 on films prepared by a colloidal approach and other techniques is also reviewed leading to bacterial inactivation. Processes in aerobic media and anaerobic media leading to bacterial loss of viability on multidrug resistant (MDR) pathogens, Gram-negative (-) and Gram-positive(+) bacteria are described. Insight is provided for the interfacial charge transfer mechanism under solar irradiation occurring between TiO2 and Cu. surface properties of 2D TiO2/Cu and TiO2-Cu films are correlated with the bacterial inactivation kinetics observed in the dark and under light. The intervention of these antibacterial sputtered surfaces in health-care facilities leading to MRSA-isolates is described in the dark and under the actinic light. The synergic intervention of the Cu and TiO2 films leading to bacterial inactivation prepared by direct current magnetron sputtering (DCMS), pulsed direct current magnetron sputtering (DCMSP) and highly ionized pulse plasma magnetron sputtering (HIPIMS) is reported in a detailed way.

Subject Areas

DCMS, DCMSP, and sputtering; highly ionized pulse plasma magnetron sputtering (HIPIMS); bacterial inactivation kinetics; Cu and TiO2 synergic effects; interfacial charge transfer

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