Chromoionophoric ligand impregnated mesoporous polymeric optical sensors for the colorimetric quantification of Cu2+ in water samples

Sivaraman, Sushmitha Pedugu; Mohan, Akhila Maheswari

doi:10.1016/j.micromeso.2021.111390

Cited by 7 publications

(2 citation statements)

References 44 publications

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“…The curve is well-fitted with high accuracy for all of the nanocomposites (correlation coefficient R 2 = 0.9964 for MP25; R 2 = 0.9987 for MP50; R 2 = 0.9993 for MP100). The above estimate of the surface area is calculated from the following equation , S BET = V m × N × S / M where S BET = total surface area of the sample, V m = monolayer adsorbed gas volume, N is Avogadro’s number, S is the adsorption cross section of the adsorbing species (here, 16.2 Å 2 /mol for nitrogen), and M is the molar mass of the adsorbate gas (28.0134 g/mol for nitrogen). The inset shows the total surface area ( S BET ) of α-MnO 2 along with the three nanocomposites.…”

Section: Resultsmentioning

confidence: 99%

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Improved Ethanol Sensing Performance of α-MnO₂ Nanorods at Room Temperature Enabled through PPy Embedding

Adhikari,

Saha,

Chattopadhyay

et al. 2023

Langmuir

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Ethanol is a colorless, highly flammable, volatile organic compound and is a biomarker for fatty liver diseases. So, high-performance and reliable ethanol sensors are the need of the day for biomedical and environmental monitoring applications and drunken driving detection. In this work, we have reported a polypyrrole (PPy)-embedded α-MnO 2 nanorod (NR)based chemiresistive sensor for the selective detection of trace ethanol vapor at room temperature (25 °C). PPy-embedded α-MnO 2 NR nanocomposites (MP25, MP50, and MP100) were synthesized by in situ chemical oxidative polymerization of pyrrole followed by mixing of α-MnO 2 NR having different weight ratios. The prepared nanocomposites were characterized by various sophisticated instruments such as XRD, FTIR, Raman spectroscopy, BET, FESEM, TEM, EDX, UV−vis spectroscopy, and current−voltage (I−V) measurement. The as-prepared sensor, namely, PPy-embedded α-MnO 2 nanorod (MP50), shows the highest response to ethanol vapor with a detection lower limit of 1 ppm at room temperature with rapid response (∼2.39 s) and recovery (∼37.08 s) times associated with at least 60 days stability, excellent selectivity, good repeatability, and reproducibility. The formation of a p−n heterojunction and transfer of charge carriers between PPy and MnO 2 nanoparticles are attributed to the enhancement of sensing performance. Thus, the prepared sensor could be potentially applicable to detect ethanol content in alcoholic beverages, diagnose liver disease from exhale breath analysis, and drunken driving detection. Recently, conducting polymers such as polypyrrole (PPy),

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Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Improved Ethanol Sensing Performance of α-MnO₂ Nanorods at Room Temperature Enabled through PPy Embedding

Adhikari,

Saha,

Chattopadhyay

et al. 2023

Langmuir

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Polymer Nanocomposites Based on Metal Oxide Nanoplatelets

Feleni,

Fuku,

Sekhosana

2024

Chemical Physics of Polymer Nanocomposites

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Molecular receptors integrated bimodal porous polymer scaffolds as portable solid-state optical ion-sensors and extractors for the selective capturing of ultra-trace toxic copper ions

Pavoor Veedu,

Mohan,

Jeyakumar

et al. 2024

Analytica Chimica Acta

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Chromoionophoric ligand impregnated mesoporous polymeric optical sensors for the colorimetric quantification of Cu2+ in water samples

Cited by 7 publications

References 44 publications

Improved Ethanol Sensing Performance of α-MnO₂ Nanorods at Room Temperature Enabled through PPy Embedding

Improved Ethanol Sensing Performance of α-MnO₂ Nanorods at Room Temperature Enabled through PPy Embedding

Polymer Nanocomposites Based on Metal Oxide Nanoplatelets

Molecular receptors integrated bimodal porous polymer scaffolds as portable solid-state optical ion-sensors and extractors for the selective capturing of ultra-trace toxic copper ions

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Chromoionophoric ligand impregnated mesoporous polymeric optical sensors for the colorimetric quantification of Cu2+ in water samples

Cited by 7 publications

References 44 publications

Improved Ethanol Sensing Performance of α-MnO2 Nanorods at Room Temperature Enabled through PPy Embedding

Improved Ethanol Sensing Performance of α-MnO2 Nanorods at Room Temperature Enabled through PPy Embedding

Polymer Nanocomposites Based on Metal Oxide Nanoplatelets

Molecular receptors integrated bimodal porous polymer scaffolds as portable solid-state optical ion-sensors and extractors for the selective capturing of ultra-trace toxic copper ions

Contact Info

Product

Resources

About

Improved Ethanol Sensing Performance of α-MnO₂ Nanorods at Room Temperature Enabled through PPy Embedding

Improved Ethanol Sensing Performance of α-MnO₂ Nanorods at Room Temperature Enabled through PPy Embedding