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- Publisher Website: 10.1016/j.bioactmat.2020.02.005
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- PMID: 32123773
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Article: Ce and Er Co-doped TiO2 for rapid bacteria- killing using visible light
Title | Ce and Er Co-doped TiO2 for rapid bacteria- killing using visible light |
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Authors | |
Keywords | Photocatalytic TiO2 Antibacterial Doping Light responsive |
Issue Date | 2020 |
Publisher | Ke Ai Publishing Communications Ltd. The Journal's web site is located at http://www.sciencedirect.com/science/journal/2452199X |
Citation | Bioactive Materials, 2020, v. 5 n. 2, p. 201-209 How to Cite? |
Abstract | Bacterial infection and related diseases are threatening the health of human beings. Photocatalytic disinfection as a simple and low-cost disinfection strategy is attracting more and more attention. In this work, TiO2 nanoparticles (NPs) were modified by co-doping of Ce and Er using the sol–gel method, which endowed TiO2 NPs with enhanced visible light photocatalytic performance but not pure ultraviolet photocatalytic properties compared the untreated TiO2. Our results disclosed that as the doping content of Er increased, the photocatalytic activity of modified TiO2 NPs initially increased and subsequently decreased. The same trend occurred for Ce doping. When the doping dose of Er and Ce is 0.5 mol% and 0.2 mol%, the 0.5Ce0.2Ti–O calcined at 800 °C presented the best antibacterial properties, with the antibacterial efficiency of 91.23% and 92.8% for Staphylococcus aureus and Escherichia coli, respectively. The existence of Er ions is thought to successfully turn the near-infrared radiation into visible region, which is easier to be absorbed by TiO2 NPs. Meanwhile, the addition of Ce ions can effectively extend spectral response range and inhibit the recombination of electrons and holes, enhancing the photocatalytic disinfection activity of co-doped TiO2. |
Persistent Identifier | http://hdl.handle.net/10722/289800 |
ISSN | 2023 Impact Factor: 18.0 2023 SCImago Journal Rankings: 3.466 |
PubMed Central ID | |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | REN, YW | - |
dc.contributor.author | HAN, Y | - |
dc.contributor.author | LI, Z | - |
dc.contributor.author | LIU, X | - |
dc.contributor.author | ZHU, S | - |
dc.contributor.author | LIANG, Y | - |
dc.contributor.author | Yeung, KWK | - |
dc.contributor.author | WU, S | - |
dc.date.accessioned | 2020-10-22T08:17:39Z | - |
dc.date.available | 2020-10-22T08:17:39Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Bioactive Materials, 2020, v. 5 n. 2, p. 201-209 | - |
dc.identifier.issn | 2452-199X | - |
dc.identifier.uri | http://hdl.handle.net/10722/289800 | - |
dc.description.abstract | Bacterial infection and related diseases are threatening the health of human beings. Photocatalytic disinfection as a simple and low-cost disinfection strategy is attracting more and more attention. In this work, TiO2 nanoparticles (NPs) were modified by co-doping of Ce and Er using the sol–gel method, which endowed TiO2 NPs with enhanced visible light photocatalytic performance but not pure ultraviolet photocatalytic properties compared the untreated TiO2. Our results disclosed that as the doping content of Er increased, the photocatalytic activity of modified TiO2 NPs initially increased and subsequently decreased. The same trend occurred for Ce doping. When the doping dose of Er and Ce is 0.5 mol% and 0.2 mol%, the 0.5Ce0.2Ti–O calcined at 800 °C presented the best antibacterial properties, with the antibacterial efficiency of 91.23% and 92.8% for Staphylococcus aureus and Escherichia coli, respectively. The existence of Er ions is thought to successfully turn the near-infrared radiation into visible region, which is easier to be absorbed by TiO2 NPs. Meanwhile, the addition of Ce ions can effectively extend spectral response range and inhibit the recombination of electrons and holes, enhancing the photocatalytic disinfection activity of co-doped TiO2. | - |
dc.language | eng | - |
dc.publisher | Ke Ai Publishing Communications Ltd. The Journal's web site is located at http://www.sciencedirect.com/science/journal/2452199X | - |
dc.relation.ispartof | Bioactive Materials | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.subject | Photocatalytic | - |
dc.subject | TiO2 | - |
dc.subject | Antibacterial | - |
dc.subject | Doping | - |
dc.subject | Light responsive | - |
dc.title | Ce and Er Co-doped TiO2 for rapid bacteria- killing using visible light | - |
dc.type | Article | - |
dc.identifier.email | Yeung, KWK: wkkyeung@hku.hk | - |
dc.identifier.authority | Yeung, KWK=rp00309 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1016/j.bioactmat.2020.02.005 | - |
dc.identifier.pmid | 32123773 | - |
dc.identifier.pmcid | PMC7037594 | - |
dc.identifier.scopus | eid_2-s2.0-85079696586 | - |
dc.identifier.hkuros | 316857 | - |
dc.identifier.volume | 5 | - |
dc.identifier.issue | 2 | - |
dc.identifier.spage | 201 | - |
dc.identifier.epage | 209 | - |
dc.identifier.isi | WOS:000533604500025 | - |
dc.publisher.place | China | - |
dc.identifier.issnl | 2452-199X | - |