Wood microfluidic engineering: development of highly stable polymer nanocomposite electrochemical nitrate sensor

WO2025042580A3 Publication Date: 2025-04-24UNIV OF MARYLAND BALTIMORE COUNTY
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Patent Information

Application Number
PCT/US2024/041166
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-08-18
Filing Date
2024-08-07
Publication Date
2025-04-24

AI Technical Summary

Technical Problem

Current methods for real-time on-site monitoring of nitrate levels in water are limited by the lack of low-cost and sensitive commercial sensors, often involving complex measurement techniques and environmental concerns related to sensor disposal.

Method used

Development of a highly stable polymer nanocomposite electrochemical nitrate sensor using a wood microfluidic cassette with a nanocomposite comprising nitrate-binding metal ion complexes incorporated in and/or on a polyaniline/carbon (Pani/C) nanostructure, which is environmentally friendly and cost-effective.

Benefits of technology

The sensor achieves high sensitivity and specificity for nitrate detection, with a low detection limit of 0.015 ppm and rapid response time, while maintaining stability over long-term storage and across varying temperatures and pH levels.

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Abstract

A biosustainable wood-based microfluidic cassette having an impedimetric nitrate sensor for nitrate monitoring of water samples, wherein the nitrate sensor employs a nanocomposite having nitrate-binding metal ion complexes incorporated in and / or on polyaniline / carbon nanostructure. The nitrate sensor demonstrates good specificity to nitrate, reproducibility, a wide temperature range operability, and measurement equivalency to commercial nitrate sensors.
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