Research Article

Improving SERS Detection of Bacillus thuringiensis Using Silver Nanoparticles Reduced with Hydroxylamine and with Citrate Capped Borohydride

Figure 6

Changes in color of borohydride reduced Ag-NPs when mixed with bacterial samples and aggregated with NaCl 1.0 M. (a) Color of borohydride reduced NPs; (b) Slight change in color when Bt suspended in 0.1 M NaCl was added to sol; (c) Color of the borohydride reduced Ag-NPs aggregated with 1.0 M NaCl; (d) color of suspensions when Bt suspended in 0.1 M NaCl was added.
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(a)
989504.fig.006b
(b)
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(c)
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(d)