A High-Response Electrochemical As(III) Sensor Using Fe3O4–rGO Nanocomposite Materials

نویسندگان

چکیده

Nowadays, heavy metal ion pollution in water is becoming more and common, especially arsenic, which seriously threatens human health. In this work, we used Fe3O4–rGO nanocomposites to modify a glassy carbon electrode selected square wave voltametric electrochemical detection methods detect trace amounts of arsenic water. Field emission scanning electron microscopy (FESEM) transmission (TEM) showed that Fe3O4 nanoparticles were uniformly distributed on the rGO sheet, with particle size about 20 nm. Raman spectroscopy impedance (EIS) provides higher sensitivity conductive substrates. Under optimized experimental conditions, Fe3O4–rGO-modified electrodes (2.15 µA/ppb) lower limit (1.19 ppb) for arsenic. They also good selectivity, stability, repeatability.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A High Performance Electrochemical Sensor for Sulfite Based on MOWS₂ Nanocomposite Modified Electrode

The present study reports synthesis of MOWS2 nanocomposite followed by its characterization using energy dispersive X-ray spectroscopy (EDS), X-Ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). Chronoamperometry (CHA), differential pulse voltammetry (DPV), and cyclic voltammetry (CV) have been used to examine electro-chemical behaviors of sulfite on MOWS2...

متن کامل

Fabrication of an Electrochemical Sensor Based on Gold Nanoparticles/Carbon Nanotubes as Nanocomposite Materials: Determination of Myricetin in Some Drinks

In this paper, the electrochemical behavior of myricetin on a gold nanoparticle/ethylenediamine/multi-walled carbon-nanotube modified glassy carbon electrode (AuNPs/en/MWCNTs/GCE) has been investigated. Myricetin effectively accumulated on the AuNPs/en/MWCNTs/GCE and caused a pair of irreversible redox peaks at around 0.408 V and 0.191 V (vs. Ag/AgCl) in 0.1 mol L-1 phosphate buffer solution (p...

متن کامل

Manganese Ferrite Nanocomposite Modified Electrochemical Sensor for the Detection of Guanine and Uric Acid

Manganese ferrite nanoparticles were produced by applying the combustion technique using the manganese acetate and ferric nitrate as the starting material. Analytical techniques like FESEM and TEM were utilized to characterize the synthesized materials. The typical size was observed in the range of 12 to 14 nm with a cubic structure. The synthesized material was used as an electrochemical senso...

متن کامل

Ultrasensitive Electrochemical Immunoassay for Avian Influenza Subtype H5 Using Nanocomposite

We report a novel electrochemical immunosensor that can sensitively detect avian influenza virus H5 subtype (AIV H5) captured by graphene oxide-H5-polychonal antibodies-bovine serum albumin (GO-PAb-BSA) nanocomposite. The graphene oxide (GO) carried H5-polychonal antibody (PAb) were used as signal amplification materials. Upon signal amplification, the immunosensor showed a 256-fold increase in...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Chemosensors

سال: 2021

ISSN: ['2227-9040']

DOI: https://doi.org/10.3390/chemosensors9060150