Gold nanoparticles decorated carbon fiber mat as a novel sensing platform for sensitive detection of Hg(II)

• Published in: Electrochemistry communications Vol. 42; pp. 30 - 33
• Main Authors: Li, Dongyue, Li, Jing, Jia, Xiaofang, Wang, Erkang
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 01.05.2014; Amsterdam Elsevier; New York, NY
• Subjects: Analysis methods; Analytical chemistry; Anodic stripping voltammetry; Applied sciences; Carbon fiber mat electrode; Chemistry; Electrochemical methods; Electrochemistry; Electrodes: preparations and properties; Exact sciences and technology; General and physical chemistry; Gold nanoparticles; Mercury; Natural water pollution; Other electrodes; Pollution; Water treatment and pollution; Carbon fiber mat electrode; Mercury; Gold nanoparticles; Anodic stripping voltammetry; Mercury II Compounds; Gold; Particle size; Chemical analysis; Nanoparticle; Transition metal; Decoration; Electrochemical detector; Heavy metal; Electrodes; Freshwater environment; Trace element; Particle size distribution; Surface water; Lakes; Water pollution; Carbon fiber; Modified material
• ISSN: 1388-2481; 1873-1902
• DOI: 10.1016/j.elecom.2014.02.003

The three-dimensional fibril-like carbon fiber mat electrode (CFME) decorated with Au nanoparticles (AuNPs) was employed to construct Hg(II) sensing platform for the first time. The highly porous feature of CFME combining the high affinity of AuNPs for mercury endowed the sensing platform with high sensitivity and good reproducibility. Under optimal conditions, the prepared AuNPs/CFME was capable of sensing Hg(II) with a detection limit of 0.1μgL−1 (S/N=3) using differential pulse anodic stripping voltammetry (DPASV). Finally, the AuNPs/CFME was successfully demonstrated for the determination of Hg(II) in real water samples with satisfactory results. •A facile and sensitive Hg(II) sensor platform was constructed.•The platform is easy to fabricate in comparison with other solid electrode.•The sensing platform displayed high sensitivity and good reproducibility.