Tin oxide-silver composite nanomaterial coating for UV protection and its bactericidal effect on Escherichia coli (E. coli)

SnO 2 -Ag composite nanomaterials of mass ratio 1:4, 2:3, 3:2 and 4:1 were fabricated and tested for toxicity to E. coli using the pour-plate technique. The said nanomaterials were mixed with laminating fluid and then coated on glass slides. The intensity of UVA transmitted through the coated glass slides was measured. Results revealed that the 1:4 ratios of SnO 2 -Ag composite nanomaterials have the optimum toxicity to E. coli. Furthermore, the glass slides coated with SnO 2 nanomaterial showed the lowest intensity of transmitted UVA. © 2014 by the authors