Application of Nanoscale Silver-Doped Titanium Dioxide as Photocatalyst for Indoor Airborne Bacteria Control: A Feasibility Study in Medical Nursing Institutions

References

• Liu, L.J.S.; Krahmer, M.; Fox, A.; Feigley, C.E.; Featherstone, A.; Saraf, A.; Larsson, L. Investigation of the Concentration of Bacteria and Their Cell Envelope Components in Indoor Air in Two Elementary Schools; J. Air & Waste Manage. Assoc. 2000, 50, 1957–1967.
   Google Scholar
• Disdier, J.; Pichat, P.; Mas, D. Measuring the Effect of Photocatalytic Purifiers on Indoor Air Hydrocarbons and Carbonyl Pollutants; J. Air & Waste Manage. Assoc. 2005, 55, 88–96.
   Google Scholar
• Tsai, T.T.; Kao, C.M.; Yeh, T.Y.; Liang, S.H.; Chien, H.Y. Application of Surfactant Enhanced Permanganate Oxidation and Biodegradation of Trichloroethylene in Groundwater; J. Hazard. Mat. 2009, 161, 111–119.
   Google Scholar
• Yu, B.F.; Hu, Z.B.; Liu, M.; Yang, H.L.; Kong, Q.X.; Liu, Y.H. Review of Research on Air-Conditioning Systems and Indoor Air Quality Control for Human Health; Int. J. Refrig. 2009, 32, 3–20.
   Google Scholar
• Vohra, A.; Goswami, D.Y.; Deshpande, D.A.; Block, S.S. Enhanced Photocatalytic Disinfection of Indoor Air; Appl. Catal. B Environ. 2006, 65, 57–65.
   Google Scholar
• Ohko, Y.; Fujishima, A.; Hashimoto, K. Kinetic Analysis of the Photo-catalytic Degradation of Gas-Phase 2-Propanol under Mass Transport-Limited Conditions with a TiO2 Film Photocatalyst; J. Phys. Chem. B 1998, 102, 1724–1729.
   Google Scholar
• Zhao, J.; Yang, X. Photocatalytic Oxidation for Indoor Air Purification: a Literature Review; Build. Environ. 2003, 38, 645–654.
   Google Scholar
• Grinshpun, S.A.; Adhikari, A.; Honda, T.; Kim, K.Y.; Toivola, M.; Ramchander Rao, K.S.; Reponen, T. Control of Aerosol Contaminants in Indoor Air: Combining the Particle Concentration Reduction with Microbial Inactivation; Environ. Sci. Technol. 2007, 41, 606–612.
   Google Scholar
• Yu, K.P.; Lee, G.W.-M.; Lin, S.Y.; Huang, C.P. Removal of Bioaerosols by the Combination of a Photocatalytic Filter and Negative Air Ions; J. Aerosol. Sci. 2008, 39, 377–392.
   Google Scholar
• Schmidt, C.M.; Weitz, E.; Geiger, F.M. Interaction of the Indoor Air Pollutant Acetone with Degussa P25 TiO2 Studied by Chemical Ionization Mass Spectrometry; Langmuir 2006, 22, 9642–9650.
   Google Scholar
• Chen, F.; Yang, X.; Xu, F.; Wu, Q.; Zhang, Y. Correlation of Photocatalytic Bactericidal Effect and Organic Matter Degradation of TiO2 Part 1: Observation of Phenomena; Environ. Sci. Technol. 2009, 43, 1180–1184.
   Google Scholar
• Tsai, C.W.; Chang, C.T.; Chiou, C.S.; Shie, J.L.; Chang, Y.M. Study on the Indoor Volatile Organic Compound Treatment and Performance Assessment with TiO2/MCM-41 and TiO2/Quartz Photoreactor under Ultraviolet Irradiation; J. Air & Waste Manage. Assoc. 2008, 58, 1266-1273; doi: 10.3155/1047–3289.58.10.1266.
   Google Scholar
• Matsunaga, T.; Tomoda, R.; Nakajima, T.; Wake, H. Photo-Electro-chemical Sterilization of Microbial Cells by Semiconductor Powders; FEMS Microbiol. Lett. 1985, 29, 211–214.
   Google Scholar
• Masaki, Y.; Masaude, S.; Ishida, K. TiO2 Photocatalyst for Environmental Purification; Sumitomo Met. 1999, 50, 26-32.
   Google Scholar
• Greist, H.T.; Hingorani, S.K.; Kelly, K.; Goswami, D.Y. Using Scanning Electron Microscopy to Visualize Photocatalytic Mineralization of Airborne Microorganisms. In Proceedings of Indoor Air 2002, Ninth International Conference on Indoor Air Quality and Climate, Monterey, CA, 2002; p 712.
   Google Scholar
• Ku, Y.; Chen, J.S.; Chen, H.W. Decomposition of Benzene and Toluene in Air Streams in Fixed-Film Photoreactors Coated with TiO2 Catalyst; J. Air & Waste Manage. Assoc. 2007, 57, 279–285.
   Google Scholar
• Salvad-Estivill, I.; Hargreaves, D.M.; Puma, G.L. Evaluation of the Intrinsic Photocatalytic Oxidation Kinetics of Indoor Air Pollutants; Environ. Sci. Technol. 2007, 41, 2028–2035.
   Google Scholar
• Gogniat, G.; Thyssen, M.; Denis, M.; Pulgarin, C.; Dukan, S. The Bactericidal Effect of TiO2 Photocatalysis Involves Adsorption onto Catalyst and the Loss of Membrane Integrity; FEMS Microbiol. Lett. 2006, 258, 18–24.
   Google Scholar
• Thrall, L.; Lubick, N.; Betts, K.; Cooney, C.M.; Burke, M.; Renner, R. Study Links TiO2 Nanoparticles with Potential for Brain-Cell Damage; Environ. Sci. Technol. 2006, 40, 4326–4334.
   Google Scholar
• Ibáñez, J.A.; Litter, M.I.; Pizarro, R.A. Photocatalytic Bactericidal Effect of TiO2 on Enterobacter cloacae: Comparative Study with Other Gram ([H11002]) Bacteria; J. Photochem. Photobiol. A Chem. 2003, 157, 81–85.
   Google Scholar
• Robertson, J.M.C.; Robertson, P.K.J.; Lawton, L.A. A Comparison of the Effectiveness of TiO2 Photocatalysis and UVA Photolysis for the Destruction of Three Pathogenic Microorganisms; J. Photochem. Photobiol. 2005, 175, 51–56.
   Google Scholar
• Sokmen, M.; Candan, F.; Sumer, Z. Disinfection of E. Coli by the Ag-TiO2/UV System: Lipidperoxidation; J. Photochem. Photobiol. A Chem. 2001, 143, 241–244.
   Google Scholar
• Sobana, N.; Muruganadham, M.; Swaminathan, M. Nano-Ag Particles Doped TiO2 for Efficient Photodegradation of Direct Azo Dyes; J. Mol. Catal. A Chem. 2006, 258, 124–132.
   Google Scholar
• Mo, J.; Zhang, Y.; Xu, Q.; Lamson, J.J.; Zhao, R. Photocatalytic Purification of Volatile Organic Compounds in Indoor Air: a Literature Review; Atmos. Environ. 2009, 43, 2229–2246.
   Google Scholar
• Chou, C.-S.; Yang, R.-Y.; Yeh, C.-K.; Lin, Y.-J. Preparation of TiO2/ Nano-Metal Composite Particles and Their Applications in Dye-Sensitized Solar Cells; Powder Technol. 2009, 194, 95–105.
   Google Scholar
• Liu, L.F.; Barford, J.; Yeung, K.L. Non-UV-Based Germicidal Activity of Metal-Doped TiO2 Coating on Solid Surfaces; J. Environ. Sci. 2007, 19, 745–750.
   Google Scholar
• Shahverdi, A.R.; Fakhimi, A.; Shahverdi, H.R.; Minaian, S. Synthesis and Effect of Silver Nanoparticles on the Antibacterial Activity of Different Antibiotics against Staphylococcus aureus and Escherichia coli; Nanomed. Nanotechnol. Biol. Med. 2007, 3, 168–171.
   Google Scholar
• Kubacka, M.F.; Martinez, A.A.; Fernandez, G.M. Ag Promotion of TiO2- Anatase Disinfection Capability: Study of Escherichia coli Inactivation; Appl. Catal. B Environ. 2008, 84, 87–93.
   Google Scholar
• Sôkmen, M.; Candan, F.; Sümer, Z. Disinfection of. E. Coli by the Ag-TiO2/UV System: Lipid Peroxidation; J. Photochem. Photobiol. A Chem. 2001, 143, 241–244.
   Google Scholar
• Liu, L.F.; Li, X.T.; Yang, F.L. Nitrogen Removal via Ammonia Oxidation and Nitrite Reduction Using Ag/TiO2 and Photocatalysis; Photographic Sci. Photochem. 2006, 24, 294–300.
   Google Scholar
• Shie, J.-L.; Lee, C.-H.; Chiou, C.-S.; Chang, C.-T.; Chang, C.-C.; Chang, C.-Y. Photodegradation Kinetics of Formaldehyde Using Light Sources of UVA, UVC and UVLED in the Presence of Composed Silver Titanium Oxide Photocatalyst; J. Hazard. Mat. 2008, 155, 164–172.
   Google Scholar
• Zhang, H.; Wang, G.; Chen, D.; Lu, X.; Li, J. Tuning Photoelectro-chemical Performances of Ag-TiO2 Nanocomposites via Reduction/ Oxidation of Ag; Chem. Mat. 2008, 20, 6543–6549.
   Google Scholar
• Yang, C.S.; Heinsohn, P. Sampling and Analysis of Indoor Microorganisms; John Wiley & Sons: New York, 2007.
   Google Scholar
• Biological Agents in Indoor Environments Assessment of Health Risks; Nevalainenl, A., Morawska, L, Eds.; World Health Organization: Geneva, Switzerland, 2009.
   Google Scholar
• Seino, K.; Takano, T.; Nakamura, K.; Watanabe, M. An Evidential Example of Airborne Bacteria in a Crowded, Underground Public Concourse in Tokyo; Atmos. Environ. 2005, 39, 337–341.
   Google Scholar
• Macher, J.M. Positive-Hole Correction of Multiple-Jet Impactors for Collecting Viable Microorganisms; Am. Indust. Hyg. Assoc. J. 1989, 50, 561–568.
   Google Scholar
• Indoor Air Bacterial Detection Method; Taiwan Environmental Protection Administration: Taipei, Taiwan, 2009; available at http://www.niea.gov.tw/niea/LIVE/E30111C.htm (accessed 2009).
   Google Scholar
• Lu, Z.; Lu, W.Z.; Zhang, J.L.; Sun, D.X. Microorganisms and Particles in AHU Systems: Measurement and Analysis; Build. Environ. 2009, 44, 694–698.
   Google Scholar
• Indoor Air Quality Recommended Value; Taiwan Environmental Protection Administration: Taipei, Taiwan, 2005; available at http://ivy3.epa.gov.tw/epalaw/docfile/044310.pdf (accessed 2009).
   Google Scholar
• Ferreira, M.; Lund, B.M. The Influence of pH and Temperature on Initiation of Growth of Salmonella spp.; Lett. Appl. Microbiol 1987, 5, 67–70.
   Google Scholar
• International Commission on Microbiological Specification for Foods. Microorganisms in Foods; Roberts, T.A., Baird-Parker, A.C., Tompkin, R.B., Eds.; Characteristics of Microbial Pathogens,Vol. 5; London: Blackie Academic & Professional: London, U.K., 1996; p 513.
   Google Scholar
• Indoor Air Quality Management Program to Promote; Taiwan Environmental Protection Administration: Taipei, Taiwan, 2006; available at http://www.iaqa.org.tw/pf21/pf21-1.pdf (accessed 2009).
   Google Scholar
• Lstiburek, J. Relative Humidity. Presented at Healthy Indoor Environments, Austin, TX, April 23, 2002; pp 1-8; available at http://www.buildingscience.com (accessed 2009).
   Google Scholar
• Obee, T.N.; Brown, R.T. TiO2 Photocatalysis for Indoor Air Applications: Effects of Humidity and Trace Contaminant Levels on the Oxidation Rates of Formaldehyde, Toluene, and 1,3-Butadiene; Environ. Sci. Technol. 1995, 29, 1223–1231.
   Google Scholar
• Indoor Air Quality: Biological Contaminants: Report on a WHO Meeting, Rautavaara, 1988; European Series No. 31; World Health Organization Regional Publications: Geneva, Switzerland, 1990.
   Google Scholar
• Wanner, H.-U.; Verhoeff, A.; Colombi, A.; Flannigan, B.; Gravesen, S.; Mouilleseaux, A.; Nevalainen, A.; Papadakis, J.; Seidel, K. Environment and Quality of Life: Biological Particles in Indoor Environments; Report No. 12; European Collaborative Action-Indoor Air Quality and its Impact on Man; Commission of the European Communities; Directorate General for Science; Research and Development; Joint Research Centre-Environment Institute: Brussels, Belgium, 1993.
   Google Scholar
• Shaffer, B.T.; Lighthart, B. Survey of Culturable Airborne Bacteria at Four Diverse Locations in Oregon: Urban, Rural, Forest, and Coastal; Microb. Ecol. 1997; 1997, 34, 167–177.
   Google Scholar
• Boss, M.J.; Day, D.W. Biological Risk Engineering Handbook: Infection Control and Decontamination; CRC/Lewis: Boca Raton, FL, 2002.
   Google Scholar
• Jo, W.K.; Park, K.H. Heterogeneous Photocatalysis of Aromatic and Chlorinated Volatile Organic Compounds (VOCs) for Non-Occupational Indoor Air Application; Chemosphere 2004, 57, 555–565.
   Google Scholar