title: Fabrication of gold nanoparticles by laser ablation in liquid and their application for simultaneous electrochemical detection of Cd2+, Pb2+, Cu2+, Hg2+.
abstract: In this paper, we demonstrated the fabrication of high active and high sensitive Au nanoparticles by laser ablation in liquid (LAL) method, and their application in electrochemical detection of heavy metal ions. First, LAL method are used to fabricate Au nanoparticles in water in a clean way. Second, the Au nanoparticles were assembled onto the surface of the glassy carbon (GC) electrode by an electrophoretic deposition method to form an AuNPs/GC electrode for electrochemical characterization and detection. Through differential pulse anodic stripping voltammetry method, it shows that the AuNPs/GC electrode could be used for the simultaneous and selective electrochemical detection of Cd(2+), Pb(2+), Cu(2+), and Hg(2+). By studying the influence of test conditions to optimize the electrochemical detection, we can detect Cd(2+), Pb(2+), Cu(2+), and Hg(2+) simultaneously with a low concentration of 3 × 10(-7) M in the experiments.
authors.affiliation: Key Lab of Materials Physics, Anhui Key lab of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei, 230031, Anhui, P. R. China.
authors.forename: Xiaoxia
authors.initials: X
authors.lastname: Xu
authors.forename: Guotao
authors.initials: G
authors.lastname: Duan
authors.forename: Yue
authors.initials: Y
authors.lastname: Li
authors.forename: Guangqiang
authors.initials: G
authors.lastname: Liu
authors.forename: Jingjing
authors.initials: J
authors.lastname: Wang
authors.forename: Hongwen
authors.initials: H
authors.lastname: Zhang
authors.forename: Zhengfei
authors.initials: Z
authors.lastname: Dai
authors.forename: Weiping
authors.initials: W
authors.lastname: Cai