Colorimetric Detection of Ammonia Using Synthesized Silver Nanoparticles from Durian Fruit Shell

Figure 1

The appearances of silver nitrate solution and AgNPs colloids synthesized (a), and the UV-vis spectra of the formed AgNPs at various times of 0, 30, 60, 90, 120, 150, 180 and 210 min (b).

(a)

(b)