@article{Jeong:2024:10.1021/acs.nanolett.4c00939,
author = {Jeong, SB and Heo, KJ and Yoo, JH and Kang, D-G and Santoni, L and Knapp, CE and Kafizas, A and Carmalt, CJ and Parkin, IP and Shin, JH and Hwang, GB and Jung, JH},
doi = {10.1021/acs.nanolett.4c00939},
journal = {Nano Letters: a journal dedicated to nanoscience and nanotechnology},
title = {Photobiocidal activity of TiO2/UHMWPE composite activated by reduced graphene oxide under white light},
url = {http://dx.doi.org/10.1021/acs.nanolett.4c00939},
year = {2024}
}

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TY  - JOUR
AB  - Herein, we introduce a photobiocidal surface activated by white light. The photobiocidal surface was produced through thermocompressing a mixture of titanium dioxide (TiO2), ultra-high-molecular-weight polyethylene (UHMWPE), and reduced graphene oxide (rGO) powders. A photobiocidal activity was not observed on UHMWPE-TiO2. However, UHMWPE-TiO2@rGO exhibited potent photobiocidal activity (>3-log reduction) against Staphylococcus epidermidis and Escherichia coli bacteria after a 12 h exposure to white light. The activity was even more potent against the phage phi 6 virus, a SARS-CoV-2 surrogate, with a >5-log reduction after 6 h exposure to white light. Our mechanistic studies showed that the UHMWPE-TiO2@rGO was activated only by UV light, which accounts for 0.31% of the light emitted by the white LED lamp, producing reactive oxygen species that are lethal to microbes. This indicates that adding rGO to UHMWPE-TiO2 triggered intense photobiocidal activity even at shallow UV flux levels.
AU  - Jeong,SB
AU  - Heo,KJ
AU  - Yoo,JH
AU  - Kang,D-G
AU  - Santoni,L
AU  - Knapp,CE
AU  - Kafizas,A
AU  - Carmalt,CJ
AU  - Parkin,IP
AU  - Shin,JH
AU  - Hwang,GB
AU  - Jung,JH
DO  - 10.1021/acs.nanolett.4c00939
PY  - 2024///
SN  - 1530-6984
TI  - Photobiocidal activity of TiO2/UHMWPE composite activated by reduced graphene oxide under white light
T2  - Nano Letters: a journal dedicated to nanoscience and nanotechnology
UR  - http://dx.doi.org/10.1021/acs.nanolett.4c00939
UR  - http://hdl.handle.net/10044/1/112938
ER  - 

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