Graphene-Based Electrochemical Sensors for Psychoactive Drugs

Area of Science:

• Materials Science
• Analytical Chemistry
• Nanotechnology

Background:

• Nanomaterial-based sensors are advancing healthcare, security, and industry.
• Graphene's high surface-to-weight ratio enhances sensor sensitivity and reliability.
• Graphene sensors are emerging as a revolutionary, cost-effective alternative to traditional drug detection methods.

Purpose of the Study:

• To review the development and applications of graphene-based sensors for drug detection over the last decade.
• To compare graphene sensors with other 2D nanomaterials for drug sensing capabilities.
• To explore direct and indirect drug measurement in various sample types.

Main Methods:

• Review of recent scientific literature on graphene-based sensors for drug detection.
• Comparative analysis of graphene sensors against other 2D materials like transition-metal dichalcogenides, hexagonal boron nitride, and MXenes.
• Examination of sensor performance in detecting specific drugs (e.g., cocaine, morphine, methamphetamine).

Main Results:

• Graphene sensors demonstrate high sensitivity and reliability in detecting a range of illicit and pharmaceutical drugs.
• Graphene's tunable properties allow for targeted molecular detection.
• Graphene sensors offer advantages in portability, ease of use, and cost-effectiveness compared to conventional techniques.

Conclusions:

• Graphene-based sensors represent a significant advancement in drug detection technology.
• Further research into graphene and other 2D materials will continue to enhance sensing capabilities.
• These sensors hold great promise for applications in medical diagnostics, environmental monitoring, and security screening.