Nanostructured microspheres of silver @ zinc oxide: an excellent impeder of bacterial growth and biofilm
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Nanostructured (metal/semiconductor) Ag@ZnO a photoactive material is synthesized by facile hydrothermal method. The FESEM analysis of as synthesized Ag@ZnO nanostructures showed formation of submicron-sized microspheres, composed of small nanoparticles of size in the range of 10–20 nm. The as synthesized Ag@ZnO nanostructures possess wurtzite hexagonal structure of ZnO with band edge transition to visible region due to surface plasmon effect of silver which ultimately is responsible for the improved photocatalytic performance. The photocatalytic action of Ag@ZnO nanostructures impede the growth of model organisms Bacillus subtilis NCIM 2063 and Escherichia coli NCIM 2931, and biofilm in Pseudomonas aeruginosa O1. The present study is important as it introduces an excellent functionality of Ag@ZnO, an agent for impeding the biofilm and bacterial communities inside the biofilm.
KeywordsSilver zinc oxide Nanostructures Biofilm Bacteria
Authors are thankful to Dr. D. P. Amalnerkar, Executive Director, C-MET, for his constant encouragement. Authors also would like to thank DeitY, New Delhi, for financial support. Authors are thankful to Nanocrystalline group for their generous help. RP and WNG would like to thanks Departmental Research and Development Grant from Department of Biotechnology, Savitribai Phule Pune University for financial help.
- Alhede M, Bjarnsholt T, Givskov M, Alhede M (2014) Chapter one: Pseudomonas aeruginosa biofilms—mechanisms of immune evasion. In: Sima S, Geoffrey MG (eds) Advances in applied microbiology. Academic Press, New York, pp 1–40Google Scholar
- De Faria AF, Martinez DS, Meira SM, De Moraes AC, Brandelli A, Filho AG, Alves OL (2014) Anti-adhesion and antibacterial activity of silver nanoparticles supported on graphene oxide sheets. Colloids Surf B 113:115Google Scholar
- Dong Y, Zhan S, Wang P, Wuhan J (2012) A facile synthesis of Ag Modified ZnO nanocrystals with enhanced photocatalytic activity. Univ Tech-Mater Sci Ed 27:2017. doi 10.1007/s11595-012-0515-2
- Kuriakose S, Bhardwaj N, Singh J, Satpati B, Mohapatra S (2013) Structural, optical and photocatalytic properties of flower-like ZnO nanostructures prepared by a facile wet chemical method Beilstein. J Nanotechnol 4:763Google Scholar
- Lana Y, Lub Y, Ren Z (2013) Mini review on photocatalysis of titanium dioxide nanoparticles and their solar applications. Nanoenergy 2:1031–1045Google Scholar
- Sriramulu D (2013) Evolution and impact of bacterial drug resistance in the context of cystic fibrosis disease and nosocomial settings. Microbiol Insights 6:29Google Scholar
- Wang Z, Chumanov G (2003) WO3 sol-gel modified Ag nanoparticle arrays for electrochemical modulation of surface plasmon resonance. Adv Mater 15:1285Google Scholar
- Wang S, Yu Y, Zuo Y, Li C, Yang J, Lu C (2012b) Synthesis and photocatalysis of hierarchical heteroassemblies of ZnO branched nanorod arrays on Ag core nanowires. Nanoscale 4:5895Google Scholar
- Zak K, Majid W, Wang H, Yousefi R, Golsheikh A,Ren Z (2013) Sonochemical synthesis of hierarchical ZnO nanostructures. Ultrason Sonochem 20:395Google Scholar
- Zeng H, Liu P, Cai W, Yang S, Xu X (2008) Controllable Pt/ZnO porous nanocages with improved photocatalytic activity. J Phys Chem C 112:19620Google Scholar