A facile cuprous oxide nanoparticles functionalized electro-reduced graphene modified glassy carbon electrode (denoted as Cu2O NPs-ERGO/GCE) was fabricated via a simple physical adsorption and electrochemical reduction approach. Cyclic voltammetry second-order derivative linear scan were used to investigate the electrocatalysis oxidation of vanillin on NPs-ERGO/GCE. The compound yielded well-defined voltammetric response in 0.1 M H2SO4 at 0.916 V (vs. saturated calomel (SCE)). calibration...

In the present work, a novel electrochemical sensor was developed for detection of trace cadmium with high sensitivity and selectivity in an easy eco-friendly way. Firstly, glassy carbon electrode (GCE) modified nontoxic sodium carboxymethyl cellulose (CMC) by simple drop-casting method, which applied to detect differential pulse anodic stripping voltammetry (DPASV) solution containing both target bismuth ions, based on quick electro-codeposition these two metal ions surface (CMC-GCE)....

Catalytic degradation of organic pollutants by nanomaterials is an effective way for environmental remediation. The Fenton reaction involving H₂O₂ oxidation catalysed Fe3+ advisable wastewater degradation. Herein, Fe₃O₄/SiO₂ core-shell nanoparticles were prepared as catalyst coprecipitation and sol-gel methods, this used fuchsin in H₂O₂. between Fe₃O₄ proposed to explain the catalytic performance. coating SiO₂ on could dramatically stabilize aqueous solution prevent their oxidation. More...

Cuprous oxide nanoparticles (Cu2O NPs) were dispersed into a graphene (GO) solution to form homogeneous Cu2O-GO dispersion. After this, the cuprous functionalized electrochemically reduce decorated glassy carbon electrode (Cu2O-ErGO/GCE). This was prepared by coating dispersion onto surface of (GCE), which followed potentiostatic reduction process. An irreversible two-electron reaction uric acid (UA) observed at voltammetric sensor. Moreover, high concentrations dopamine (DA) and ascorbic...

To ensure food quality and safety, developing cost-effective, rapid precision analytical techniques for quantitative detection of nitrite is highly desirable. Herein, a novel electrochemical sensor based on the sodium cellulose sulfate/poly (dimethyl diallyl ammonium chloride) (NaCS/PDMDAAC) composite film modified glass carbon electrode (NaCS/PDMDAAC/GCE) was proposed toward at sub-micromolar level, aiming to make full use inherent properties individual component (biocompatible, low cost,...

The discharge of dye contaminant malachite green (MG) into the water environment will seriously affect human health. In this paper, Fe3O4@SiO2 magnetic nanoparticles were prepared as catalysts using co-precipitation and sol-gel methods, which accelerated removal MG by H2O2 over a wide pH range with remarkable results. degradation mechanism is consistent Fe2+-H2O2 Fenton system pseudo-first-order kinetic model, rate can be increased 179 times compared not catalyst. When ≥ 5, catalyzes...

Human epidermal growth factor receptor (EGFR) has become a well-established target for the treatment of non-small cell lung cancer (NSCLC). However, large number in-frame deletion, insertion and duplication mutations in EGFR tyrosine kinase (TK) domain have been observed to alter drug response such target. Thus, systematic investigation intermolecular interactions between clinical small-molecule agents various mutants would help establish complete picture cancer, design new inhibitors with...

A strategy for constructing novel DNA–anionic porphyrin supramolecular assemblies by “fixation” of CNTs and “inclusion” CDs was reported.

A new electrochemical sensor has been constructed for ultra-sensitive detection of lead ions (Pb2+) by square wave anodic stripping voltammetry (SWASV), based on the copper sulfide/graphitic carbon nitride nanocomposite modified glassy electrode (CuS/g-C3N4/GCE). First, spherical CuS nanoparticles with good electrical conductivity were anchored layered g-C3N4 high coordination activity, affording an excellent modifier CuS/g-C3N4 nanocomposite. Then, performance CuS/g-C3N4/GCE and its...

The content of sulfur dioxide derivatives in cells is closely related to life and health. Therefore, it essential detect the under physiological conditions ensure In this paper, a novel derivative fluorescent water-soluble probe ((E)-1,1,3-trimethyl-2-(2-(naphthalen-1-yl)vinyl)-1H-3λ4-benzo[e]indole, TNB) was synthesized by using naphthalene formaldehyde (1) 1,1,2,3-tetramethyl-1H-3λ4-benzo[e]indole (2) as raw materials. Based on intramolecular charge transfer (ICT) mechanism ring...

Crystals of the title compound, C(14)H(9)BrI(2)N(2)O(2)·H(2)O, were obtained from a condensation reaction 3-bromo-benzohydrazide with 3,5-diiodo-salicylaldehyde. The Schiff base mol-ecule assumes an E configuration respect to C=N bond, and dihedral angle between two benzene rings is 6.9 (2)°. An intra-molecular O-H⋯N hydrogen bond observed in may contribute its overall near planarity. In crystal structure, mol-ecules are linked through inter-molecular O-H⋯O N-H⋯O bonds, forming layers...

Human epidermal growth factor receptor 2 (HER2) is a key tumor marker for several common and deadly cancers. It of great importance to develop efficient detection methods its over-expression. In this work, an electrochemical impedance spectroscopy (EIS) method adjustable by anionic porphyrin HER2 gene has been proposed, based on the difference between multi-walled carbon nanotubes (MWCNTs) DNA. The interesting finding herein that with addition porphyrin, i.e.,...

Abstract A new electrochemical sensor for Cu 2+ detection by square wave voltammetry with high sensitivity has been constructed, based on a composite of sodium carboxymethyl cellulose and Nafion. Starting from these two polymers that are rich hydrophilic groups in backbones, highly negative‐charged easily prepared, which displays outstanding ability to adsorb enrich onto the electrode surface through both electrostatic attractions chelating interactions. After optimizing test conditions,...

Abstract Ionic polymeric flocculants, as useful and widely used technology, have been applied for heavy metal pollution control. However, although molecular weight is an important indicator, it not a comprehensive indicator evaluating flocculation efficiencies of ionic flocculants. Herein, specific charge density ( SCD ), defined unit weight, new to evaluate the performance polymer Polydiallyldimethylammonium chloride PDADMAC ) coagulant aid investigated flocculate different anionic...

Malachite Green (MG) is a widely used triphenyl alkyl dye, which can cause serious water pollution. Therefore, it necessary to monitor the MG residue in environment. In this paper, octahedral cuprous oxide (o-Cu2O) nanoparticle has been synthesised for modification of glassy carbon electrode (GCE), aiming determine trace by square wave anodic stripping voltammetry (SWASV). Since exposed (111) crystal facet o-Cu2O contains abundant unsaturated active ‘copper’ atoms, not only enrich surface...