Facile and One Pot Synthesis of Gold Nanoparticles Using Tetraphenylborate and Polyvinylpyrrolidone for Selective Colorimetric Detection of Mercury Ions in Aqueous Medium
Figure 6
UV-vis spectra of PVP stabilized AuNPs (pH = 12) with various metal ions; (a) no metal ion (blank), (b) Pb2+ (c) Ca2+ (d) Zn2+ and (e) Hg2+; Inset. Photographic images show various metal ion in PVP-stabilized AuNPs (pH = 12); (a) no metal (blank), (b) Pb2+, (c) Ca2+, (d) Zn2+, and (e) Hg2+ ions.
