Seyedeh Mina Ghalebi, Hooshang Parham, Abbas Shirmardi
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Hg2+ determination by DPASV by using poly (methylene disulfide)/Au nanoparticle/MWCNT modified glassy carbon electrode by differential pulse anodic stripping voltammetry (DPASV) technique
In the present work, a glassy carbon electrode (GCE) was surface modified by a poly (methylene disulfide)/Au–nanoparticles/multiwall carbon nanotubes (PMDS/AuNPs/MWCNT) to improve its ability to detect of trace mercury cations in polluted water. The produced electrode was characterized with FE-SEM, HR-TEM, AFM, XRD, and FT-IR techniques. The obtained results proved the success of the modification process and revealed that the process had a significant effect on the morphology of the electrode and its surface roughness. EIS analysis demonstrated the improvement of the electrochemical properties of the surface-modified sample. Accordingly, the obtained charge transfer resistance (Rct) decreased from 477.1 Ohm cm2 for the unmodified GCE to 83.4 Ohm cm2 for the modified-GCE. The designed modified electrode was used as an ultra-sensitive electrode for determining the concentration of Hg2+ cation using the differential pulse anodic stripping voltammetry (DPASV) technique.
期刊介绍：
The Journal of Porous Materials is an interdisciplinary and international periodical devoted to all types of porous materials. Its aim is the rapid publication
of high quality, peer-reviewed papers focused on the synthesis, processing, characterization and property evaluation of all porous materials. The objective is to
establish a unique journal that will serve as a principal means of communication for the growing interdisciplinary field of porous materials.
Porous materials include microporous materials with 50 nm pores.
Examples of microporous materials are natural and synthetic molecular sieves, cationic and anionic clays, pillared clays, tobermorites, pillared Zr and Ti
phosphates, spherosilicates, carbons, porous polymers, xerogels, etc. Mesoporous materials include synthetic molecular sieves, xerogels, aerogels, glasses, glass
ceramics, porous polymers, etc.; while macroporous materials include ceramics, glass ceramics, porous polymers, aerogels, cement, etc. The porous materials
can be crystalline, semicrystalline or noncrystalline, or combinations thereof. They can also be either organic, inorganic, or their composites. The overall
objective of the journal is the establishment of one main forum covering the basic and applied aspects of all porous materials.
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