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11 October 2025 by SSSIHL News, Research

Innovative Nano-Sensor Simplifies Water Quality Checks by Detecting Two Pollutants Simultaneously

Identifying the Issue

  • The presence of toxic ionic pollutants such as mercuric (Hg²⁺) and nitrite (NO2−) ions in water sources pose significant environmental and health concerns.
  • Although various nanomaterial-based electrochemical sensors have been developed for individual ion detection, dual-ion sensing platforms remain scarce.

Objective of the Research

  • Develop an efficient dual-function electrochemical sensor for the simultaneous detection of Hg²⁺ and NO2− ions in water using a nanocomposite of graphene oxide and hydrogen titanate nanotubes.

Who should read this?

  • Environmental scientists, researchers, and engineers – Developing advanced nanomaterial-based electrochemical sensing platforms for real-time detection of chemical water contaminants.
  • Water treatment industries and policymakers – Implementing integrated sensing platforms for improved water quality monitoring and regulation.

Solution

A novel electrochemical sensor of graphene oxide-hydrogen titanate nanotubes nanocomposite for simultaneous detection of both mercuric (Hg²⁺) and nitrite (NO₂⁻) ions in aqueous systems.

Key Features and Benefits

  • Time & Cost-efficient: Simultaneous detection of two pollutants in a single test reduces resources, analysis time, and
  • Dual-Ion Sensing Capability: Measures both cationic (Hg²⁺) and anionic (NO₂⁻) contaminants, enhancing the scope of water quality assessment.
  • Environmentally Relevant: Facilitates early detection of toxic contaminants, preventing ecological damage and human exposure risks.

Impact

  • Enhances Water Safety: Accurately detects Hg²⁺ and NO₂⁻ at low concentrations, ensuring safe drinking.
  • Improves Monitoring Efficiency: Enables simultaneous multi-ion detection, reducing testing time by over 50% compared to conventional single-ion analysis methods.

Team

  1. Dasari Swarna 
  2. Lokeswara Reddy S
  3. Sushma Tripathi
  4. Anjana Biswas
  5. Ganesh V (Corresponding author)
  6. Prathibha C (Corresponding author)

Title of paper: “A dual-target electrochemical sensor for simultaneous detection of mercuric and nitrite ions in water using a nanocomposite of graphene oxide and hydrogen titanate nanotubes”

Read Paper Here: https://doi.org/10.1016/j.microc.2025.115488

Academic Year 2025/26 Physics

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