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Open AccessFeature PaperArticle

Ethylene Glycol Functionalized Gadolinium Oxide Nanoparticles as a Potential Electrochemical Sensing Platform for Hydrazine and p-Nitrophenol

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Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
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Department of Chemistry, College of Science and Arts, Najran University, Najran 11001, Saudi Arabia
3
Promising Centre for Sensors and (Electronic Devices PCSED), Najran University, Najran 11001, Saudi Arabia
*
Authors to whom correspondence should be addressed.
Coatings 2019, 9(10), 633; https://doi.org/10.3390/coatings9100633
Received: 20 July 2019 / Revised: 22 September 2019 / Accepted: 26 September 2019 / Published: 1 October 2019
(This article belongs to the Special Issue Mesoporous Metal Oxide Films)
The current work reports the successful synthesis of ethylene glycol functionalized gadolinium oxide nanoparticles (Gd2O3 Nps) as a proficient electrocatalytic material for the detection of hydrazine and p-nitrophenol. A facile hydrothermal approach was used for the controlled growth of Gd2O3 Nps in the presence of ethylene glycol (EG) as a structure-controlling and hydrophilic coating source. The prepared material was characterized by several techniques in order to examine the structural, morphological, optical, photoluminescence, and sensing properties. The thermal stability, resistance toward corrosion, and decreased tendency toward photobleaching made Gd2O3 nanoparticles a good candidate for the electrochemical sensing of p-nitrophenol and hydrazine by using cyclic voltammetric (CV) and amperometric methods at a neutral pH range. The modified electrode possesses a linear range of 1 to 10 µM with a low detection limit of 1.527 and 0.704 µM for p-nitrophenol and hydrazine, respectively. The sensitivity, selectivity, repeatability, recyclability, linear range, detection limit, and applicability in real water samples made Gd2O3 Nps a favorable nanomaterial for the rapid and effectual scrutiny of harmful environmental pollutants. View Full-Text
Keywords: gadolinium oxide; hydrazine; p-nitrophenol; electrochemical sensing; amperometric; selective sensor gadolinium oxide; hydrazine; p-nitrophenol; electrochemical sensing; amperometric; selective sensor
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Chaudhary, S.; Kumar, S.; Kumar, S.; Chaudhary, G.R.; Mehta, S.; Umar, A. Ethylene Glycol Functionalized Gadolinium Oxide Nanoparticles as a Potential Electrochemical Sensing Platform for Hydrazine and p-Nitrophenol. Coatings 2019, 9, 633.

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