Effect of modified iodine on defect structure and antibacterial properties of ZnO in visible light

Effect of modified iodine on defect structure and antibacterial properties of ZnO in visible light Keywords Iodine  ZnO  Disinfection  Oxygen vacancies Introduction Water purification, which consists of eliminating contaminants and inactivating waterborne pathogens, is crucial for safe drinking water [1–4]. Conventional disinfection methods such as chlorination [5], ozone [6], UV radiation [7], and advanced filtration technology can achieve effective sterilization or the separation of biomass from water [8–11]. However, the disinfection byproducts produced in chlorination or ozone processes are carcinogenic [12, 13]. In addition, advanced filtration technology is expensive and not eco-friendly [11]. Photocatalytic technology is regarded as a promising approach for removing pathogen microor- ganisms, since the report on photochemical sterilization by Matsunaga et al. [14]. Zinc oxide (ZnO) as an antibacterial agent has received considerable attention due to its broad antibacterial activities under UV light, biocompatibility and cheapness low cost [13, 15, 16]. Unfortunately, ZnO, as a wide band gap (3.36 eV) photocatalyst, can only be excited by UV irradiation and has low quantum efficiency due to the fast recombination of photo-induced electron–hole pairs [17], which greatly limits its biomedical application under visible light or normal room light illumination. In order to extend the visible light absorption of ZnO and enhance the photocatalytic performance of ZnO under visible light, http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Effect of modified iodine on defect structure and antibacterial properties of ZnO in visible light

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Publisher
Springer Netherlands
Copyright
Copyright © 2017 by Springer Science+Business Media B.V.
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-017-3053-x
Publisher site
See Article on Publisher Site

Abstract

Keywords Iodine  ZnO  Disinfection  Oxygen vacancies Introduction Water purification, which consists of eliminating contaminants and inactivating waterborne pathogens, is crucial for safe drinking water [1–4]. Conventional disinfection methods such as chlorination [5], ozone [6], UV radiation [7], and advanced filtration technology can achieve effective sterilization or the separation of biomass from water [8–11]. However, the disinfection byproducts produced in chlorination or ozone processes are carcinogenic [12, 13]. In addition, advanced filtration technology is expensive and not eco-friendly [11]. Photocatalytic technology is regarded as a promising approach for removing pathogen microor- ganisms, since the report on photochemical sterilization by Matsunaga et al. [14]. Zinc oxide (ZnO) as an antibacterial agent has received considerable attention due to its broad antibacterial activities under UV light, biocompatibility and cheapness low cost [13, 15, 16]. Unfortunately, ZnO, as a wide band gap (3.36 eV) photocatalyst, can only be excited by UV irradiation and has low quantum efficiency due to the fast recombination of photo-induced electron–hole pairs [17], which greatly limits its biomedical application under visible light or normal room light illumination. In order to extend the visible light absorption of ZnO and enhance the photocatalytic performance of ZnO under visible light,

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Jul 21, 2017

References

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