Sample Preparation Using Graphene-Oxide-Derived Nanomaterials for the Extraction of Metals.

Area of Science:

• Materials Science
• Analytical Chemistry
• Nanotechnology

Background:

• Graphene oxide (GO) possesses a large surface area and excellent stability, enabling diverse applications.
• GO is utilized in analytical chemistry for extracting organic compounds, metal ions, and proteins.
• The negative charge of GO sheets in solution makes them ideal for binding metal ions.

Purpose of the Study:

• This review discusses graphene oxide and its nanocomposites for metal ion extraction.
• It covers applications prior to determination using instrumental analytical techniques.
• The review also explores modifications of GO using ionic liquids and deep eutectic solvents.

Main Methods:

• Review of literature on graphene oxide and its nanocomposites for metal ion extraction.
• Analysis of applications in various sample matrices (biological, environmental, agricultural, food).
• Discussion of functionalization strategies and analytical determination techniques.

Main Results:

• Graphene oxide nanocomposites show significant potential for metal ion extraction and preconcentration.
• Various GO-based materials have been synthesized and evaluated for diverse sample types.
• Functionalization enhances the efficiency and selectivity of metal ion binding.

Conclusions:

• Graphene oxide and its derivatives are highly effective sorbents for metal ion analysis.
• Modification with ionic liquids and deep eutectic solvents offers advanced capabilities.
• These materials are promising for sensitive and selective determination of metal ions.