Antibacterial activities of mechanochemically synthesized perovskite strontium titanate ferrite metal oxide
This work explored strontium titanate ferrite (SrTi1−xFexO3−δ or STFx in short) metal oxide as an effective antibacterial agent and investigated its bactericidal mechanism. The perovskite STFx nanoparticles (x = 0, 0.2, 0.4, 0.6, 0.8 and 1) were successfully synthesized with high energy ball milling...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2016
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| Online Access: | https://hdl.handle.net/10356/81664 http://hdl.handle.net/10220/40881 |
| _version_ | 1826123675385987072 |
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| author | Zhang, Li Tan, Pei Yun Chow, Chee Lap Lim, Chiew Keat Tan, Ooi Kiang Tse, Man Siu Sze, Chun Chau |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Zhang, Li Tan, Pei Yun Chow, Chee Lap Lim, Chiew Keat Tan, Ooi Kiang Tse, Man Siu Sze, Chun Chau |
| author_sort | Zhang, Li |
| collection | NTU |
| description | This work explored strontium titanate ferrite (SrTi1−xFexO3−δ or STFx in short) metal oxide as an effective antibacterial agent and investigated its bactericidal mechanism. The perovskite STFx nanoparticles (x = 0, 0.2, 0.4, 0.6, 0.8 and 1) were successfully synthesized with high energy ball milling approach. The feasibility of utilizing this material for antibacterial application was studied on Escherichia coli (E. coli) in the presence of dispersed STF0.8 nanoparticles in water. Excellent bactericidal effect has been observed by killing all the E. coli (∼105 CFU/mL) within 15 min in both light and dark conditions, excluding photocatalysis as the major contributing mean of bactericidal effect. Mechanism study via surface charge characterization, fluorescence microscope observation, inductively coupled plasma measurement and SEM examination has revealed that the positive surface charge, high pH environment, Sr2+ dissociation and nano-size of STF0.8 metal oxide could have collectively contributed to its excellent bactericidal effect. These results have increased the potential to apply STFx in water purification for microorganism destruction. |
| first_indexed | 2024-10-01T06:08:16Z |
| format | Journal Article |
| id | ntu-10356/81664 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:08:16Z |
| publishDate | 2016 |
| record_format | dspace |
| spelling | ntu-10356/816642020-03-07T12:18:04Z Antibacterial activities of mechanochemically synthesized perovskite strontium titanate ferrite metal oxide Zhang, Li Tan, Pei Yun Chow, Chee Lap Lim, Chiew Keat Tan, Ooi Kiang Tse, Man Siu Sze, Chun Chau School of Electrical and Electronic Engineering School of Biological Sciences Temasek Laboratories Strontium titanate ferrite Antibacterial This work explored strontium titanate ferrite (SrTi1−xFexO3−δ or STFx in short) metal oxide as an effective antibacterial agent and investigated its bactericidal mechanism. The perovskite STFx nanoparticles (x = 0, 0.2, 0.4, 0.6, 0.8 and 1) were successfully synthesized with high energy ball milling approach. The feasibility of utilizing this material for antibacterial application was studied on Escherichia coli (E. coli) in the presence of dispersed STF0.8 nanoparticles in water. Excellent bactericidal effect has been observed by killing all the E. coli (∼105 CFU/mL) within 15 min in both light and dark conditions, excluding photocatalysis as the major contributing mean of bactericidal effect. Mechanism study via surface charge characterization, fluorescence microscope observation, inductively coupled plasma measurement and SEM examination has revealed that the positive surface charge, high pH environment, Sr2+ dissociation and nano-size of STF0.8 metal oxide could have collectively contributed to its excellent bactericidal effect. These results have increased the potential to apply STFx in water purification for microorganism destruction. ASTAR (Agency for Sci., Tech. and Research, S’pore) 2016-07-04T06:16:40Z 2019-12-06T14:35:47Z 2016-07-04T06:16:40Z 2019-12-06T14:35:47Z 2014 Journal Article Zhang, L., Tan, P. Y., Chow, C. L., Lim, C. K., Tan, O. K., Tse, M. S., et al. (2014). Antibacterial activities of mechanochemically synthesized perovskite strontium titanate ferrite metal oxide. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 456, 169-175. 0927-7757 https://hdl.handle.net/10356/81664 http://hdl.handle.net/10220/40881 10.1016/j.colsurfa.2014.05.032 en Colloids and Surfaces A: Physicochemical and Engineering Aspects © 2014 Elsevier. |
| spellingShingle | Strontium titanate ferrite Antibacterial Zhang, Li Tan, Pei Yun Chow, Chee Lap Lim, Chiew Keat Tan, Ooi Kiang Tse, Man Siu Sze, Chun Chau Antibacterial activities of mechanochemically synthesized perovskite strontium titanate ferrite metal oxide |
| title | Antibacterial activities of mechanochemically synthesized perovskite strontium titanate ferrite metal oxide |
| title_full | Antibacterial activities of mechanochemically synthesized perovskite strontium titanate ferrite metal oxide |
| title_fullStr | Antibacterial activities of mechanochemically synthesized perovskite strontium titanate ferrite metal oxide |
| title_full_unstemmed | Antibacterial activities of mechanochemically synthesized perovskite strontium titanate ferrite metal oxide |
| title_short | Antibacterial activities of mechanochemically synthesized perovskite strontium titanate ferrite metal oxide |
| title_sort | antibacterial activities of mechanochemically synthesized perovskite strontium titanate ferrite metal oxide |
| topic | Strontium titanate ferrite Antibacterial |
| url | https://hdl.handle.net/10356/81664 http://hdl.handle.net/10220/40881 |
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