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Effect of modified iodine on defect structure and antibacterial properties of ZnO in visible light.
- Source :
-
Research on Chemical Intermediates . Sep2017, Vol. 43 Issue 9, p5067-5081. 15p. - Publication Year :
- 2017
-
Abstract
- Iodine-modified ZnO with oxygen vacancies were synthesized by the solvothermal method. The crystal structure, morphology, optical properties and defects of as-prepared samples were characterized by XRD, SEM, DRS, XPS and ESR. The photocatalytic disinfection activity of I-modified ZnO in the dark and under visible light irradiation were investigated by the antibacterial drop-test method. The results showed that the iodine mainly exists in the form of I in the ZnO. The modified iodine increases the numbers of oxygen vacancies of ZnO as the amount of iodine increases. In addition, the I-ZnO exhibits much higher antibacterial activity than that of pure ZnO and was stable during the photocatalytic process. The enhanced antibacterial activity of I-ZnO is attributed to the co-operation of the oxygen vacancies and the iodine which promotes the separation of photo-generated carriers and subsequently produces more ROS (reactive oxygen species). Graphical Abstract: [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09226168
- Volume :
- 43
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Research on Chemical Intermediates
- Publication Type :
- Academic Journal
- Accession number :
- 124728083
- Full Text :
- https://doi.org/10.1007/s11164-017-3053-x