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

Chaudhary, Savita; Kumar, Sandeep; Kumar, Sushil; Chaudhary, Ganga Ram; Mehta, S.K.

doi:10.3390/coatings9100633

Cited by 21 publications

(9 citation statements)

References 55 publications

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“…Further, the absorbance of UV–vis spectra at 400 nm versus p -NP concentration from 6.67 to 600 μM showed a satisfactory linear relationship ( R 2 = 0.996) with a colorimetric LOD of 4.97 μM for p -NP (Figure G,H). The comparison of the proposed sensing strategy with previous methods − for the detection of p -NP is summarized in Table , which compares the sensitivity of response between CTAB-Cu NPs and p -NP.…”

Section: Resultsmentioning

confidence: 99%

Multifunctional Probe Based on CTAB-Cu Nanoparticles for Fluorescence and Colorimetric Dual-Read-Out Determination of p-Nitrophenol and Glyphosate

Wang

Peng

et al. 2023

ACS Sustainable Chem. Eng.

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The quantitative analysis of glyphosate has significant implications for the evaluation of food quality and environmental safety risks. First, copper nanoparticles (Cu NPs) were synthesized using cetyltrimethylammonium bromide (CTAB) as a stabilizing agent, which resolved the limitation associated with atmospheric oxidation of Cu NPs and provided excellent fluorescence stability. Interestingly, the fluorescence of blue-emitting CTAB-Cu NPs was quenched by pH-responsive p-nitrophenol (p-NP) via Forster resonance energy transfer. Herein, a dual read-out sensor based on CTAB-Cu NPs and p-NP was constructed for glyphosate detection. Specifically, acetic acid (HAc) from acetylcholine (ACh) via hydrolysis catalyzed by acetyl cholinesterase (AChE) reduced the pH of the mixed solution and prevented the loss of protons from p-NP, which allowed the fluorescence emission by CTAB-Cu NPs. The presence of glyphosate inhibited the activity of AChE, and the increased pH resulted in proton loss. The fluorescence intensity of CTAB-Cu NPs was quenched, and the solution color changed from colorless to yellow with a UV absorption peak at 400 nm. The sensor can detect ultra-trace levels of glyphosate residues with a limit of detection of 5.43 ng/L. The obtained biosensor was successfully utilized to monitor the degradation of glyphosate in the roots of cabbage and cultivated soil.

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Section: Resultsmentioning

confidence: 99%

Multifunctional Probe Based on CTAB-Cu Nanoparticles for Fluorescence and Colorimetric Dual-Read-Out Determination of p-Nitrophenol and Glyphosate

Wang

Peng

et al. 2023

ACS Sustainable Chem. Eng.

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“…Chaudhary S. et al [64] reported the synthesis and characterization of Gd 2 O 3 NPs functionalized with ethylene glycol (EG) by the hydrothermal method starting from GdCl 3 and EG. A variation on GdCl 3 concentration was done from 5 mM to 25 mM to study the effects of synthetic parameters over the optical, photoluminescence, and band-gap variation.…”

Section: Hydrothermal Methodsmentioning

confidence: 99%

“…Chaudhary S. et al [64] reported the synthesis and Gd 2 O 3 NPs functionalized with ethylene glycol (EG) by the hydrothermal method starting from GdCl 3 and EG. (See Section 3.1.5 for more details).…”

Section: Functionalization By Non-covalent Interactionsmentioning

confidence: 99%

“…Current literature also reveals that the chemical modification of the Gd 2 O 3 surface is more common compared to Gd 2 O 2 S. This fact is mainly due to -OH groups exposed on the Gd 2 O 3 surface, which are more chemically active under less extreme conditions, this has allowed the formation of chemical bonds to anchor different biomolecules such as APTES [74], DO 3 A-BTA [89], PMVEMA [10], EG [64], PEG [93], PAA [91], among others. In the particular case of Gd 2 O 2 S, the gadolinium ion is wholly coordinated by four oxygen and three sulfur atoms.…”

Section: Concluding Remarks and Prospectsmentioning

confidence: 99%

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An Overview of Gadolinium-Based Oxide and Oxysulfide Particles: Synthesis, Properties, and Biomedical Applications

et al. 2021

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In the last decade, the publications presenting novel physical and chemical aspects of gadolinium-based oxide (Gd2O3) and oxysulfide (Gd2O2S) particles in the micro- or nano-scale have increased, mainly stimulated by the exciting applications of these materials in the biomedical field. Their optical properties, related to down and upconversion phenomena and the ability to functionalize their surface, make them attractive for developing new probes for selective targeting and emergent bioimaging techniques, either for biomolecule labeling or theranostics. Moreover, recent reports have shown interesting optical behavior of these systems influenced by the synthesis methods, dopant amount and type, particle shape and size, and surface functionality. Hence, this review presents a compilation of the latest works focused on evaluating the optical properties of Gd2O3 and Gd2O2S particles as a function of their physicochemical and morphological properties; and also on their novel applications as MRI contrast agents and drug delivery nanovehicles, discussed along with their administration routes, biodistribution, cytotoxicity, and clearance mechanisms. Perspectives for this field are also identified and discussed.

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“…These materials exhibited a high surface area and uniformity of unique mesoporous particle morphology, generating many active sites, a fast-ionic transport and enhanced capacitive properties. Chaudhary et al [10] also used a hydrothermal approach for the controlled growth of gadolinium oxide (Gd 2 O 3 ) nanoparticles in the presence of ethylene glycol (EG) as a structure-controlling and hydrophilic coating source. The structural, optical, photoluminescence, and sensing properties of the prepared materials, as well as their thermal stability, resistance toward corrosion, and decreased tendency toward photobleaching made Gd 2 O 3 a good candidate for the electrochemical sensing of p-nitrophenol and hydrazine using voltammetric and amperometric techniques.…”

Section: This Special Issuementioning

confidence: 99%

Mesoporous Metal Oxide Films

Topoglidis

2020

Coatings

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Great progress has been made in the preparation and application of mesoporous metal oxide films and materials during the last three decades. Numerous preparation methods and applications of these novel and interesting materials have been reported, and it was demonstrated that mesoporosity has a direct impact on the properties and potential applications of such materials. This Special Issue of Coatings contains a series of ten research articles demonstrating emphatically that various metal oxide materials could be prepared using a number of different methods, and focuses on many areas where these mesoporous materials could be used, such as sensors, solar cells, supercapacitors, photoelectrodes, anti-corrosion agents and bioceramics. Our aim is to present important developments in this fast-moving field, from various groups around the world.

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

Cited by 21 publications

References 55 publications

Multifunctional Probe Based on CTAB-Cu Nanoparticles for Fluorescence and Colorimetric Dual-Read-Out Determination of p-Nitrophenol and Glyphosate

Multifunctional Probe Based on CTAB-Cu Nanoparticles for Fluorescence and Colorimetric Dual-Read-Out Determination of p-Nitrophenol and Glyphosate

An Overview of Gadolinium-Based Oxide and Oxysulfide Particles: Synthesis, Properties, and Biomedical Applications

Mesoporous Metal Oxide Films

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