Photocatalytic Inactivation of Escherichia Coli Using Zinc Stannate Nanostructures under Visible Light

Abstract:

Zinc stannate (ZnSnO₃) nanostructured were synthesized in aqueous media at room temperature. The room temperature synthesis was designed using pourbaix diagrams. The synthesized nanoparticles were checked for their photocatalytic activity for inactivation of model microbe such as Escherichia coli (E.Coli). Photocatalytic activity was observed for zinc stannate (ZTO) in colloidal solution and ZTO deposited on glass slides. Various different concentrations of ZTO nanoparticles were used in slurry form, the bactericidal activity was observed under halogen light, room light and dark conditions. Type of light source and concentration of catalyst were observed to be the two utmost parameters for assessing the efficiency.

• Periodical: Advanced Materials Research (Volume 1131)
• Pages: 203-209
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1131.203
• Online since: December 2015
• Authors: Muhammad Najam Khan*, Mayuree Jaisai, Joydeep Dutta
• Keywords: Photocatalysis, Room Temperature E.coli, Zinc Stannate

References

[1] Sunandan Baruah, Samir K. Pal, and Joydeep Dutta, Nanostructured Zinc Oxide for Water Treatment. Nanoscience & Nanotechnology-Asia, 2012. 4(2).

DOI: 10.2174/2210681211202020090

[2] Lonnen, J., et al., Solar and photocatalytic disinfection of protozoan, fungal and bacterial microbes in drinking water. Water Research, 2005. 39(5): pp.877-883.

DOI: 10.1016/j.watres.2004.11.023

[3] Rincon, A.G. and C. Pulgarin, Bactericidal action of illuminated TiO2 on pure Escherichia coli and natural bacterial consortia: Post-irradiation events in the dark and assessment of the effective disinfection time. Applied Catalysis B: Environmental, 2004. 49(2): pp.99-112.

DOI: 10.1016/j.apcatb.2003.11.013

[4] Adams, L.K., D.Y. Lyon, and P.J.J. Alvarez, Comparative eco-toxicity of nanoscale TiO2, SiO2, and ZnO water suspensions. Water Research, 2006. 40(19): pp.3527-3532.

DOI: 10.1016/j.watres.2006.08.004

[5] Huang, N., et al., Photochemical disinfection of Escherichia coli with a TiO2 colloid solution and a self-assembled TiO2 thin film. Supramolecular Science, 1998. 5(5-6): pp.559-564.

DOI: 10.1016/s0968-5677(98)00074-1

[6] Qi, L., et al., Preparation and antibacterial activity of chitosan nanoparticles. Carbohydrate Research, 2004. 339(16): pp.2693-2700.

DOI: 10.1016/j.carres.2004.09.007

[7] Sondi, I. and B. Salopek-Sondi, Silver nanoparticles as antimicrobial agent: A case study on E. coli as a model for Gram-negative bacteria. Journal of Colloid and Interface Science, 2004. 275(1): pp.177-182.

DOI: 10.1016/j.jcis.2004.02.012

[8] Krishna, V., et al., Mechanism of enhanced photocatalysis with polyhydroxy fullerenes. Applied Catalysis B: Environmental, 2008. 79(4): pp.376-381.

DOI: 10.1016/j.apcatb.2007.10.020

[9] Gelover, S., et al., A practical demonstration of water disinfection using TiO2 films and sunlight. Water Research, 2006. 40(17): pp.3274-3280.

DOI: 10.1016/j.watres.2006.07.006

[10] Ibanez, J.A., M.I. Litter, and R.A. Pizarro, Photocatalytic bactericidal effect of TiO2 on Enterobacter cloacae. Comparative study with other Gram (-) bacteria. Journal of Photochemistry and Photobiology A: Chemistry, 2003. 157(1): pp.81-85.

DOI: 10.1016/s1010-6030(03)00074-1

[11] Erkan, A., U. Bakir, and G. Karakas, Photocatalytic microbial inactivation over Pd doped SnO2 and TiO2 thin films. Journal of Photochemistry and Photobiology A: Chemistry, 2006. 184(3): pp.313-321.

DOI: 10.1016/j.jphotochem.2006.05.001

[12] Baruah, S. and J. Dutta, Hydrothermal growth of ZnO nanostructures. Science and Technology of Advanced Materials, 2009. 10(1): p.013001.

DOI: 10.1088/1468-6996/10/1/013001

[13] Baruah, S., et al., Photocatalytic paper using zinc oxide nanorods. Science and Technology of Advanced Materials, 2010. 11(5).

[14] Najam Khan, M., et al., Visible light photocatalysis of mixed phase zinc stannate/zinc oxide nanostructures precipitated at room temperature in aqueous media. Ceramics International, 2014. 40(6): pp.8743-8752.

DOI: 10.1016/j.ceramint.2014.01.094

[15] Al-Hinai, A.T., M.H. Al-Hinai, and J. Dutta, Application of Eh-pH diagram for room temperature precipitation of zinc stannate microcubes in an aqueous media. Materials Research Bulletin, 2014. 49(0): pp.645-650.

DOI: 10.1016/j.materresbull.2013.10.011

[16] Najam Khan, M. and J. Dutta, Comparison of photocatalytic activity of zinc stannate particles and zinc stannate/zinc oxide composites for the removal of phenol from water, and a study on the effect of pH on photocatalytic efficiency. Materials Science in Semiconductor Processing, 2015. 36(0): pp.124-133.

DOI: 10.1016/j.mssp.2015.03.011

[17] Najam Khan, M., Comparison of different zinc stannate structures synthesized at room temperature for photodegradation of dyes and phenol, in Nanotechnology. 2014, Asian Institute of Technology: Bangkok.

[18] Baruah, S., M. Jaisai, and J. Dutta, Development of a visible light active photocatalytic portable water purification unit using ZnO nanorods. Catalysis Science & Technology, 2012. 2(5): pp.918-921.

DOI: 10.1039/c2cy20033c

[19] Zhang, Y., et al., Hydrothermal synthesis and characterization of single-crystalline zinc hydroxystannate microcubes. Journal of Crystal Growth, 2007. 308(1): pp.99-104.

DOI: 10.1016/j.jcrysgro.2007.07.030

[20] ATMACA;, S., K. GÜL;, and R. ÇİÇEK, The Effect of Zinc On Microbial Growth. Tr. J. of Medical Sciences, 1998. 28: pp.595-597.

[21] Barry, A.L., et al., Methods of measuring zones of inhibition with the Bauer-Kirby disk susceptibility test. Journal of Clinical Microbiology, 1979. 10(6): pp.885-889.

DOI: 10.1128/jcm.10.6.885-889.1979