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Related Concept Videos

Electrogravimetric Analysis: Overview01:30

Electrogravimetric Analysis: Overview

Electrogravimetric analysis measures the weight of an analyte deposited electrolytically onto a suitable working electrode. This method involves applying a potential to a pre-weighed electrode submerged in a solution, which results in the desired substance being deposited through reduction at the cathode or oxidation at the anode. The electrode's weight is recorded after deposition, and the difference in weight gives the analyte's weight in the solution.
To test the completeness of the...
Voltammetry: Stripping Methods01:13

Voltammetry: Stripping Methods

Anodic Stripping Voltammetry (ASV), Cathodic Stripping Voltammetry (CSV), and Adsorptive Stripping Voltammetry (AdSV) are electrochemical techniques used to determine trace amounts of analytes in solution. These methods involve applying a potential to an electrode and measuring the resulting current.
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
Electrodeposition01:08

Electrodeposition

Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...

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Related Experiment Video

Updated: May 24, 2026

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
11:42

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Published on: July 24, 2015

Metal-based impurities in graphenes: application for electroanalysis.

Sze Yin Chee1, Martin Pumera

  • 1Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore.

The Analyst
|March 14, 2012
PubMed
Summary
This summary is machine-generated.

Metallic impurities in graphene can be leveraged for electroanalysis. Graphene with iron impurities enhances cumene hydroperoxide reduction, outperforming iron oxide nanoparticles.

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Area of Science:

  • Electrochemistry
  • Materials Science
  • Nanotechnology

Background:

  • Graphene, a single layer of carbon atoms, is widely studied for its unique electronic properties.
  • Metallic impurities are often present in graphene synthesized from graphite.
  • The utility of these inherent impurities in electrochemical applications remains largely unexplored.

Purpose of the Study:

  • To investigate the potential of metallic impurities in graphene for electroanalytical applications.
  • To compare the electroanalytical performance of graphene with inherent metallic impurities against conventional nanomaterials.

Main Methods:

  • Electrochemical reduction of cumene hydroperoxide was performed.
  • Graphene samples containing iron-based impurities were utilized.
  • Comparative experiments were conducted using iron oxide nanoparticles.

Main Results:

  • Graphene containing iron-based impurities exhibited significantly larger voltammetric currents for cumene hydroperoxide reduction compared to iron oxide nanoparticles.
  • The inherent metallic impurities in graphene demonstrated superior electrocatalytic activity.

Conclusions:

  • Metallic impurities in graphene can be effectively utilized as electrocatalysts.
  • This finding presents a novel approach for developing cost-effective and efficient graphene-based electrochemical systems by repurposing inherent impurities.