|About this Abstract
||Materials Science & Technology 2012
||Nanotechnology for Energy, Environment, Healthcare and Industry
||Silver Nano Particles Anchored to Hierarchical Carbon Substrates: Robust Devices for Chemical-Free Water Disinfection
||Anil Kumar Karumuri, Sharmila M Mukhopadhyay, Dhawal Oswal, Heather Hostetler, Tinu Daboiku
|On-Site Speaker (Planned)
||Anil Kumar Karumuri
In this study, silver nano-particles (Ag-NP) have been attached to hierarchical carbon substrates for antibacterial applications. The support structures are fabricated by grafting carbon nanotubes (CNT) onto cellular carbon creating a hierarchical substrate that combines mechanical integrity with extremely high surface area. This is followed by deposition of Ag-NP through reduction of silver salt in the presence of suitable reducing and capping agents. Microstructural characterization of these robust structures shows uniform particle size distribution of Ag-NP on support structures even inside the pores. Moreover, the Ag-NP are well bonded, and do not detach from the support after prolonged water treatment.The anti-bacterial performance, capacity, and re-usability of these materials are tested by using E. Coli K12 bacteria contaminated water. The rate kinetics of bacteria removal as a function of time is showed that these materials significantly lower bacterial load with time and could be very effective in disinfection of water.