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Cr2O3–TiO2-Modified Filter Paper-Based Portable Nanosensors for Optical and Colorimetric Detection of Hydrogen Peroxide

Authors :
Sohail Nadeem
Yaqeen Ali
Muhammad Yaqoob Javed
Akhtar Hayat
Sidra Rashid
Sundas Jamil
Muhammad Nasir
Source :
ACS Omega, ACS Omega, Vol 6, Iss 36, Pp 23368-23377 (2021)
Publication Year :
2021
Publisher :
American Chemical Society, 2021.

Abstract

In the present approach, a Cr2O3-TiO2-modified, portable, and biomimetic nanosensor was designed to meet the requirement of a robust and colorimetric sensing of hydrogen peroxide. Cr2O3-TiO2 nanocomposites prepared via the hydrothermal method were fabricated as a transducer surface on the filter paper using the sol-gel matrix. The color on the filter paper sensor changed from green to blue upon the addition of hydrogen peroxide in the presence of TMB. This change in the color intensity was linear with the concentration of H2O2. RGB software was used as a color analyzing model to evaluate the optical signals. This paper-based colorimetric platform provided us with an improved analytical figure of merit with a linear range of 0.005-100 μM with 0.003 μM limit of detection. The real sample analysis and excellent anti-interference potential results proved the good analytical performance of the proposed design, providing a more promising tool for colorimetric H2O2 detection. Introducing Cr2O3-TiO2 nanocomposite-based paper sensors, being a novel method for optical and colorimetric detection, can pave the way for the development of other sensing devices for the detection of different analytes.

Details

Language :
English
ISSN :
24701343
Volume :
6
Issue :
36
Database :
OpenAIRE
Journal :
ACS Omega
Accession number :
edsair.doi.dedup.....fef83f322f37bd6c3015d0569b0aee66