This work provides a facile electrochemical method for simultaneous detection of Cd2+, Pb2+, and Cu2+, on the base of one-pot synthesis of triethanolamine (TEOA)-functionalized gold nanoparticle (AuNP)-metal-organic framework-graphene oxide nanocomposites (TEOA@AuNPs-GO-UiO-66-NH2). In this method, TEOA not only can act as a base for the deprotonation of 2-aminoterephthalic acid, leading to in situ synthesizing the UiO-66-NH2 on the GO nanosheets by a one-step hydrothermal method, but also can be used as a reductant reacted with HAuCl4 to form AuNPs, improving the conductivity of the composite...
