Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Microbial Biosensors01:17

Microbial Biosensors

Microbial biosensors are analytical devices that utilize living microbes to detect specific substances through measurable signals. These devices consist of two main components: biosensing organisms and signal-transducing elements. Biosensing organisms, such as Escherichia coli or Saccharomyces cerevisiae, are typically housed in multiwell plates connected to transducers, enabling rapid, real-time detection of target analytes.Signal Generation MechanismWhen a target analyte—such as...
Amperometry: Overview01:10

Amperometry: Overview

Amperometry is a technique commonly used to measure the concentration of specific analytes in a solution by monitoring the electric current generated during an electrochemical reaction. It involves applying a constant potential between a working electrode and a reference electrode to measure the resulting current, which is proportional to the concentration of the analyte. The Clark oxygen electrode operates based on this principle of amperometry. It consists of a cathode and an anode enclosed...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Synergistic Silk Fibroin/Cellulose Inverse Opals as Flexible Colorimetric Sensors for Multiphase Water and Organic Alcohol Recognition.

Sensors (Basel, Switzerland)·2026
Same author

Spatially Separated Activation-Conversion Nitride Catalysts for Accelerated Ammonia Synthesis.

ACS applied materials & interfaces·2026
Same author

Collaborative passive cooling of impact-hardening interfaces enabled by nacre-mimetic design.

Nature communications·2026
Same author

Ultrasound-mediated modulation of non-covalent interactions between whey protein isolate fibrils and Hericium erinaceus polysaccharides: Structural characteristics and interfacial properties.

Food research international (Ottawa, Ont.)·2026
Same author

Selective Antimicrobial Activity of Slightly Acidic Electrolyzed Water: Differential Effects on Harmful and Beneficial Bacteria in Microbial Fermentation Systems.

Environmental microbiology·2026
Same author

Long-term operated constructed wetlands: High organic carbon storage and autochthonous carbon dominance.

Bioresource technology·2026

Related Experiment Video

Updated: Jul 12, 2026

A Polyaniline-based Sensor of Nucleic Acids
07:58

A Polyaniline-based Sensor of Nucleic Acids

Published on: November 1, 2016

Highly sensitive ammonia sensor based on carboxylated MXene-functionalized microfiber.

Lewen Zhang1, Zhibin Xu2, Hanyang Wang2

  • 1School of Electronic and Information Engineering, Hefei Institute of Technology, Hefei 238076, China.

Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
|July 10, 2026
PubMed
Summary

This study presents an ultra-sensitive ammonia (NH3) gas sensor using carboxylated MXene on optical microfibers. It offers high sensitivity and stability for room-temperature environmental monitoring.

Keywords:
Ammonia detectionCarboxylated MXeneMicrofiber sensingRoom-temperature gas sensor

More Related Videos

Manufacturing of a Nafion-coated, Reduced Graphene Oxide/Polyaniline Chemiresistive Sensor to Monitor pH in Real-time During Microbial Fermentation
11:18

Manufacturing of a Nafion-coated, Reduced Graphene Oxide/Polyaniline Chemiresistive Sensor to Monitor pH in Real-time During Microbial Fermentation

Published on: January 7, 2019

Related Experiment Videos

Last Updated: Jul 12, 2026

A Polyaniline-based Sensor of Nucleic Acids
07:58

A Polyaniline-based Sensor of Nucleic Acids

Published on: November 1, 2016

Manufacturing of a Nafion-coated, Reduced Graphene Oxide/Polyaniline Chemiresistive Sensor to Monitor pH in Real-time During Microbial Fermentation
11:18

Manufacturing of a Nafion-coated, Reduced Graphene Oxide/Polyaniline Chemiresistive Sensor to Monitor pH in Real-time During Microbial Fermentation

Published on: January 7, 2019

Area of Science:

  • Materials Science
  • Chemical Sensing
  • Nanotechnology

Background:

  • High-sensitivity ammonia (NH3) detection at room temperature is crucial for environmental monitoring.
  • Existing sensors often lack the required sensitivity or stability for practical applications.

Purpose of the Study:

  • To develop an ultra-sensitive gas sensor for ammonia detection at room temperature.
  • To leverage the properties of 2D MXene and optical microfibers for enhanced sensing capabilities.

Main Methods:

  • Fabrication of a carboxylated MXene-functionalized microfiber sensor.
  • Utilizing Density Functional Theory (DFT) for theoretical validation of enhanced adsorption.
  • Experimental gas sensing tests to evaluate performance metrics.

Main Results:

  • Carboxylation significantly enhances NH3 adsorption on MXene, confirmed by DFT.
  • The sensor demonstrates a strong linear response from 10-250 ppm.
  • Achieved a practical detection limit of 10 ppm, an order of magnitude improvement over previous sensors, with a theoretical limit of 6.90 ppm.
  • Exhibited excellent long-term stability (10 days) and gas selectivity.

Conclusions:

  • The carboxylated MXene microfiber sensor offers superior sensitivity and stability for room-temperature ammonia detection.
  • This approach provides a new strategy for high-performance gas sensors.
  • Potential applications include environmental atmospheric monitoring.