Document Detail


Antibacterial and Water Purification Activities of Self-Assembled Honeycomb Structure of Aerosol Deposited Titania Film.
MedLine Citation:
PMID:  23110548     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
A simple and rapid room-temperature aerosol deposition method was used to fabricate TiO2 films for photokilling/photdegradation applications. TiO2 particles are accelerated to supersonic speeds and fractured upon impacting a glass substrate to form a functional thin film, a process known as aerosol deposition. After deposition, the films were annealed at various temperatures, and their photokilling/photodegradation performances following ultra-violet (UV) exposure were evaluated by counting the number of surviving bacterial colonies, and by a methylene blue decolorization test. The photocatalytic performances of all TiO2 films were obtained under weak UV exposure (0.6 mW/cm2). The film density, crystalline phase, and surface roughness (morphology) were measured by scanning electron microscopy, X-ray diffraction, UV-visible spectroscopy, and atomic force microscopy. The unique, self-assembled honeycomb structure of the aerosol deposited films contributed to the increase in surface area because of extreme roughness, which enhances the photokilling and photodegradation performance. Non-annealed films yielded the best photocatalytic performance due to their small crystalline sizes and large surface areas due to increased surface roughness.
Authors:
Jung-Jae Park; Jong-Gun Lee; Do-Yeon Kim; Joo-Hyun Hong; Jae-Jin Kim; Seungkwan Hong; Sam S Yoon
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-30
Journal Detail:
Title:  Environmental science & technology     Volume:  -     ISSN:  1520-5851     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-31     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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