Enhanced Photocatalytic and Antibacterial Ability of Cu-Doped Anatase TiO2 Thin Films: Theory and Experiment
Alotaibi, Abdullah M, Williamson, Benjamin AD, Sathasivam, Sanjayan, Kafizas, Andreas, Alqahtani, Mahdi, Sotelo-Vazquez, Carlos, Buckeridge, John, Wu, Jiang, Nair, Sean P, Scanlon, David O and Parkin, Ivan P (2020). Enhanced Photocatalytic and Antibacterial Ability of Cu-Doped Anatase TiO2 Thin Films: Theory and Experiment. ACS applied materials & interfaces. 12 (13), pp. 15348-15361.
|Authors||Alotaibi, Abdullah M, Williamson, Benjamin AD, Sathasivam, Sanjayan, Kafizas, Andreas, Alqahtani, Mahdi, Sotelo-Vazquez, Carlos, Buckeridge, John, Wu, Jiang, Nair, Sean P, Scanlon, David O and Parkin, Ivan P|
Multifunctional thin films which can display both photocatalytic and antibacterial activity are of great interest industrially. Here, for the first time, we have used aerosol-assisted chemical vapor deposition to deposit highly photoactive thin films of Cu-doped anatase TiO2 on glass substrates. The films displayed much enhanced photocatalytic activity relative to pure anatase and showed excellent antibacterial (vs Staphylococcus aureus and Escherichia coli) ability. Using a combination of transient absorption spectroscopy, photoluminescence measurements, and hybrid density functional theory calculations, we have gained nanoscopic insights into the improved properties of the Cu-doped TiO2 films. Our analysis has highlighted that the interactions between substitutional and interstitial Cu in the anatase lattice can explain the extended exciton lifetimes observed in the doped samples and the enhanced UV photoactivities observed.
|Journal||ACS applied materials & interfaces|
|Journal citation||12 (13), pp. 15348-15361|
|Publisher||American Chemical Society (ACS)|
|Digital Object Identifier (DOI)||doi:10.1021/acsami.9b22056|
|Online||18 Mar 2020|
|Publication process dates|
|Accepted||28 Feb 2020|
|Deposited||06 Apr 2020|
|Accepted author manuscript|
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