Nanoscale surface designing of Cerium oxide nanoparticles for controlling growth, stability, optical and thermal properties

Chaudhary, Savita; Sharma, Priyanka; Kumar, Rajeev; Mehta, S.K.

doi:10.1016/j.ceramint.2015.05.044

Cited by 29 publications

(18 citation statements)

References 37 publications

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“…In the case of CeO 2 ‐CPB/GCE, the agglomeration of nanoparticles has been occurred and caused by concentration of CPB used (lower than critical micelle concentration). This data correspond well to the reported earlier as well as the working area of the electrode surface obtained by CV. SEM data confirm the successful immobilization of nanomaterial and significant increase of the electrode working surface in comparison to GCE.…”

Section: Resultssupporting

confidence: 93%

“…At low concentration of surfactants ([surfactant]<critical micelle concentration (CMC)), the agglomerated patterns with closely joined particles are usually generated as compared to the [surfactant] > CMC. Consequently, the particle‐particle interactions dominate over surfactant‐nanoparticle interactions . Modification of electrode surface with dispersion of CeO 2 nanoparticles in CPB leads to increase of the electrode effective surface area in comparison to GCE.…”

Section: Resultsmentioning

confidence: 99%

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Highly Sensitive Amperometric Sensor for Eugenol Quantification Based on CeO₂ Nanoparticles and Surfactants

et al. 2017

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Amperometric sensor for eugenol based on glassy carbon electrode (GCE) modified with CeO2 nanoparticles dispersed in surfactant was fabricated. The effect of surfactant nature (sodium dodecylsulfate, cetylpyridinium bromide (CPB) and Brij® 35) on eugenol voltammetric behaviour was tested. In comparison to CeO2‐H2O/GCE, CeO2‐CPB/GCE showed 2.8‐fold increased current and 70 mV cathodic shift of potential in the diffusion‐controlled irreversible electrooxidation. The electrodes were characterized with SEM and EIS. CeO2‐CPB/GCE showed significantly lower charge transfer resistance (2.6±0.3 kΩ vs. 20±1 kΩ for CeO2‐H2O/GCE and 173±9 kΩ for GCE). Under conditions of DPV, the sensor linear dynamic range is 0.075‐75.0 μM of eugenol with the limits of detection (LOD) and quantification (LOQ) of 19.1 and 63.8 nM, respectively. The sensor exhibited high sensitivity, selectivity, good reproducibility and fast response and was applied for the real samples analysis (essential oils and clove spices). The results obtained correspond well to the data of spectrophotometric method.

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Section: Resultssupporting

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Highly Sensitive Amperometric Sensor for Eugenol Quantification Based on CeO₂ Nanoparticles and Surfactants

et al. 2017

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“…There are several synthetic approaches for the preparation of ceria nanoparticles, including precipitation [119][120][121], thermal decomposition [121,122], template or surfactant-assisted method [123][124][125][126], microwave-assisted synthesis [127][128][129], the alcohothermal [124,130] or hydrothermal [121,124,[131][132][133][134][135] method, microemulsion [133,136,137], solution combustion [138,139], sol-gel [140][141][142], sonochemical [143,144], etc. However, not all methods lead to particles of well-ordered size and shape with uniform dispersion on the catalyst surface [145].…”

Section: Shape Effectsmentioning

confidence: 99%

Recent Advances on the Rational Design of Non-Precious Metal Oxide Catalysts Exemplified by CuOx/CeO2 Binary System: Implications of Size, Shape and Electronic Effects on Intrinsic Reactivity and Metal-Support Interactions

Konsolakis

Lykaki

2020

Catalysts

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Catalysis is an indispensable part of our society, massively involved in numerous energy and environmental applications. Although, noble metals (NMs)-based catalysts are routinely employed in catalysis, their limited resources and high cost hinder the widespread practical application. In this regard, the development of NMs-free metal oxides (MOs) with improved catalytic activity, selectivity and durability is currently one of the main research pillars in the area of heterogeneous catalysis. The present review, involving our recent efforts in the field, aims to provide the latest advances—mainly in the last 10 years—on the rational design of MOs, i.e., the general optimization framework followed to fine-tune non-precious metal oxide sites and their surrounding environment by means of appropriate synthetic and promotional/modification routes, exemplified by CuOx/CeO2 binary system. The fine-tuning of size, shape and electronic/chemical state (e.g., through advanced synthetic routes, special pretreatment protocols, alkali promotion, chemical/structural modification by reduced graphene oxide (rGO)) can exert a profound influence not only to the reactivity of metal sites in its own right, but also to metal-support interfacial activity, offering highly active and stable materials for real-life energy and environmental applications. The main implications of size-, shape- and electronic/chemical-adjustment on the catalytic performance of CuOx/CeO2 binary system during some of the most relevant applications in heterogeneous catalysis, such as CO oxidation, N2O decomposition, preferential oxidation of CO (CO-PROX), water gas shift reaction (WGSR), and CO2 hydrogenation to value-added products, are thoroughly discussed. It is clearly revealed that the rational design and tailoring of NMs-free metal oxides can lead to extremely active composites, with comparable or even superior reactivity than that of NMs-based catalysts. The obtained conclusions could provide rationales and design principles towards the development of cost-effective, highly active NMs-free MOs, paving also the way for the decrease of noble metals content in NMs-based catalysts.

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“…The absence of any peak related to impurity has confirmed the purity of the prepared nanoparticles [30]. The average crystallite size (D) of 15 nm has been estimated from the diffraction peaks by using the respective values of full width at half maximum (FWHM) via employing Debye-Scherrer's formula [31,32]. The specific surface area and pore diameter of the obtained sample was found to be 15.3 m 2 •g −1 and 2.3 nm, which were respectively calculated by using the nitrogen sorption studies at 77 K in accordance with the BET (Brunauer-Emmett-Teller) process.…”

Section: Characterization and Properties Of Synthesized Gd 2 O 3 Nanomentioning

confidence: 95%

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

Chaudhary

Kumar

et al. 2019

Coatings

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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.

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Nanoscale surface designing of Cerium oxide nanoparticles for controlling growth, stability, optical and thermal properties

Cited by 29 publications

References 37 publications

Highly Sensitive Amperometric Sensor for Eugenol Quantification Based on CeO₂ Nanoparticles and Surfactants

Highly Sensitive Amperometric Sensor for Eugenol Quantification Based on CeO₂ Nanoparticles and Surfactants

Recent Advances on the Rational Design of Non-Precious Metal Oxide Catalysts Exemplified by CuOx/CeO2 Binary System: Implications of Size, Shape and Electronic Effects on Intrinsic Reactivity and Metal-Support Interactions

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

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Nanoscale surface designing of Cerium oxide nanoparticles for controlling growth, stability, optical and thermal properties

Cited by 29 publications

References 37 publications

Highly Sensitive Amperometric Sensor for Eugenol Quantification Based on CeO2 Nanoparticles and Surfactants

Highly Sensitive Amperometric Sensor for Eugenol Quantification Based on CeO2 Nanoparticles and Surfactants

Recent Advances on the Rational Design of Non-Precious Metal Oxide Catalysts Exemplified by CuOx/CeO2 Binary System: Implications of Size, Shape and Electronic Effects on Intrinsic Reactivity and Metal-Support Interactions

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

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Product

Resources

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Highly Sensitive Amperometric Sensor for Eugenol Quantification Based on CeO₂ Nanoparticles and Surfactants

Highly Sensitive Amperometric Sensor for Eugenol Quantification Based on CeO₂ Nanoparticles and Surfactants