Preparation of Gold Nanoplates Using Ortho Carbonyl Compounds as Capping Agents for Electrochemical Sensing of Lead Ions

Abstract In this study, gold nanoplates were synthesized using plant molecules (gallic acid) following a kinetic control mode. The growth of is mainly due to the specific adsorption capping agents on certain crystal facets. Through systematical characterizations, it found that distance between two oxygen atoms in ortho carbonyl compounds matches well with lattice spacing (111) facets exactly, which beneficial formation twin seeds and further plate-like nanoparticles. glassy carbon electrode show remarkably improved electrochemical sensing activity lead ions compared bare or spherical nanoparticle-modified electrode. modified expected be used detection ion concentration heavy metal wastewater.