One‐Step Constructed Electrochemiluminescence Sensor Coupled with Magnetic Enhanced Solid Phase Microextraction to Sensitively Detect Bisphenol‐A

Abstract

In the present study, an electrochemiluminescence quenching approach coupled with magnetic enhanced solid phase microextraction was exploited for the extraction and determination of bisphenol A. The GO‐Fe3O4 nanocomposites as solid phase microextraction sorbent were synthesized for extraction of bisphenol A. It was found that the magnetic field applied using an external magnet can not only achieve rapid separation, but also enhance the extraction efficiency to some extent. The GO−Au nanoparticle (GO‐AuNPs) composites combine the advantages of large specific surface area of graphene oxide and good conductivity of Au nanoparticles. Thus, an electrochemiluminescence sensor was constructed by immobilization of GO‐AuNPs composites on glassy carbon electrodes (GCE). Bisphenol A could quench GO‐AuNPs composites enhanced electrochemiluminescence signal of luminol during the detection stage. Under optimized experimental conditions, the quenched electrochemiluminescence intensity was linearly proportionally to the negative value of the logarithm of the concentration of bisphenol A within the range of 10−8∼10−4 mol/L, with a correlation coefficient r of 0.9920 and a limitation of detection of 4.2×10−9 mol/L. This method can be used to detect bisphenol‐A in real samples, meanwhile its sensitivity was higher based on the enhancing effect of luminol by GO‐AuNPs composites and extraction of target before detection.

Air‐Stable Fe3O4@SiO2‐EDTA‐Ni(0) as an Efficient Recyclable Magnetic Nanocatalyst for Effective Suzuki‐Miyaura and Heck Cross‐Coupling via Aryl Sulfamates and Carbamates

“…Magnetic Fe 3 O 4 nanoparticles (MNPs) are non‐toxic, biodegradable, and biocompatible particles that have been attracted much attention giving to surface functionalization ability makes them an exciting option for the separation point of view. [ 22 ] They are interesting candidates for ongoing researches owing to their unique physiochemical properties and outstanding usages including medical diagnostics and therapeutics, [ 23 ] hyperthermia, [ 24 ] data storage, [ 25 ] magnetic resonance imaging (MRI), [ 26 ] biomedical protection, [ 27 ] sensor applications, [ 28 ] magnetic inks for jet printing, [ 29 ] and catalysis. [ 30 ]…”

Electrochemical sensor based on epoxy-functionalized BEA nanozeolite and graphene oxide modified glassy carbon electrode for bisphenol E determination

“…Advances in the area of nanostructured materials, have made possible the design of a series of different electrochemical sensors, where nanocomposites are used to decorate conventional glassy carbon electrodes (GCE) or screen printed electrodes (SPE) with reported increased sensitivity and/or selectivity for the determination of BPs [, , , , , , , , , , [9][10][11][12][13][14][15][16][17][18][19]. Graphene oxide (GO) nanocomposites or hybrids with other materials [, , , , , , [20][21][22][23][24][25][26] are also examples of nanomaterials used for this purpose. Surfactants, dendrimers, ionic liquids, among others, are additional materials used for the preparation of electrochemical sensors for BPs determination [, , , , 27-31].…”

High-performance biocompatible nano-biocomposite artificial muscles based on a renewable ionic electrolyte made of cellulose dissolved in ionic liquid

“…With the discovery of electromechanical properties that are gradually revealed by smart materials, electroactive polymers (EAPs) have attracted attention with their excellent feature characteristics of large deformation, quick response, bio-driven behavior, flexibility and light weight, etc [1][2][3]. Among them, biomass-based renewable natural actuators are favored in some medical equipment and soft electronics [4,5], biomimetic robots [6][7][8], biomedical devices [9] and biomimetic sensor-actuators [10][11][12] due to their excellent biocompatibility and biodegradability. As biomass materials become the trend of green manufacturing in the future, it is extremely important to develop a type of natural, biocompatible, biodegradable sustainable nano-biocomposite soft actuator [13][14][15][16][17].…”