Facile synthesis and characterization of erbium oxide (Er2O3) nanospheres embellished on reduced graphene oxide nanomatrix for trace-level detection of a hazardous pollutant causing Methemoglobinaemia

Rajaji, Umamaheswari; Manavalan, Shaktivel; Chinnapaiyan, Sathishkumar; Chen, Shen‐Ming; Ramalingam, R. Jothi

doi:10.1016/j.ultsonch.2019.02.023

Cited by 36 publications

(16 citation statements)

References 58 publications

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“…However, XPS analysis confirms the presence of all elements in all ingredients. Figure 3 displays the binding energy of Ca 2p, the peak at 347 eV represents the angular momentum of 3/2, and the peak at 351 eV represents the angular momentum of 1/2 [55,56]. The XPS spectrum of O 1s exhibits a peak at 531.4 eV for the O 2 ions in the oxygen vacancies within the MoO 3 matrix [57].…”

Section: Xpsmentioning

confidence: 99%

Nanoarchitectonics of Hydroxyapatite/Molybdenum Trioxide/Graphene Oxide Composite for Efficient Antibacterial Activity

El‐Naggar

Ali

Saleh

et al. 2021

J Inorg Organomet Polym

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Nanocomposites based on hydroxyapatite (HAP), including MoO 3 , HAP/MoO 3 , HAP/GO and HAP/MoO 3 /GO have been studied to be suggested for biological usage. The different compositions were investigated using FTIR, XRD, EDS, and XPS analysis. The tight relation between morphological features and composites' chemical ingredients was also studied. According to TEM micrographs, it was mentioned that the disappearance of well-defined grains after the combinations of HAP and MoO 3 , while graphene oxide (GO) caused a reduction in size and maintaining the particles' shape. The combination between HAP/MoO 3 declines the roughness of both HAP and MoO 3 individually, recording 27.5 nm, while HAP/GO and HAP/MoO3/GO exhibit in-between roughness average (Ra) value among its raw constituents with 34.7 and 33.5 nm, respectively. Furthermore, SEM micrographs and roughness results show how to tailing the proper features for the proposed application by changing the type and amount of additives into HAP. Thus, the composite (HAP/MoO 3 /GO) displays the uppermost cell viability compared with the rest compositions with 97.8 ± 3.0%. Additionally, this triple composite hits the peak germicidal behavior with 17.9 ± 1.2 and 16.5 ± 0.9 mm against both E.coli and S.aureus, respectively.

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Section: Xpsmentioning

confidence: 99%

Nanoarchitectonics of Hydroxyapatite/Molybdenum Trioxide/Graphene Oxide Composite for Efficient Antibacterial Activity

El‐Naggar

Ali

Saleh

et al. 2021

J Inorg Organomet Polym

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“…XPS spectrum affirming the existence of Er ions in SFEO is shown in Figure 5C, approving their 3 + state through an intense signal at 169 eV. The three deconvoluted signals labelled in Figure 5C signature the occurrence of Er in form of metal traces, Er‐oxide and Er‐hydroxide, respectively 32,33 . O 1s core level spectrum shown in Figure 5D was next studied to analyze the nature of oxygen binding with rare earth metallic ions.…”

Section: Resultsmentioning

confidence: 99%

“…The three deconvoluted signals labelled in Figure 5C signature the occurrence of Er in form of metal traces, Er-oxide and Er-hydroxide, respectively. 32,33 O 1s core level spectrum shown in Figure 5D was next studied to analyze the nature of oxygen binding with rare earth metallic ions. The deconvoluted O peaks were further identified to describe the Fe O, Sm O, OH and surface adsorbed H 2 O in SFEO.…”

Section: Resultsmentioning

confidence: 99%

SmFeO ₃ and SmFe _1‐x Er _x O ₃ based perovskite nanorods for improved oxygen and hydrogen evolution functions

et al. 2020

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Summary Samarium (Sm) based perovskite nanorod‐like structures were processed for electrocatalytic functions involving oxygen and hydrogen evolution reactions. Influence of erbium (Er) ions on the structural and electrocatalytic properties of SmFe1−xErxO3 perovskites were studied under varied alkaline pH (8.5‐14) conditions. The rod‐like dimensional analysis was obtained through scanning/transmission electron microscopes. Diffraction signals affirmed the presence of samarium oxide (Sm2O3) traces in processed perovskites. X‐ray photoelectron spectroscopy data signified the presence of corresponding oxides and determined the valence state of Sm, Er and Fe ions. Er ions were found to boost the production of oxygen and hydrogen molecules. The anodic overpotential values improved from 216 mV to 184 mV, while cathodic overpotential values improved from 231 mV to 213 mV upon Er inclusion. Electrocatalytic results approved SmFe1−xErxO3 as a promising oxygen/hydrogen liberating electrocatalyst with remarkable stability and Tafel slopes that improved from 96 to 77 mV/dec and 78 to 55 mV/dec upon Er incorporation in host perovskite.

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“…74 Also, the economic and environmentally friendly synthesis of Er 2 O 3 -RGO (reduced graphene oxide) has been successful in the electrochemical detection of nitrite concentrations (Figure 7). 69 Another area of sensor application of REO which has been less explored is neurochemical monitoring. In this regard, a potential is established in the literature, but further investigation is needed due to little evidence to date.…”

Section: Sensors and Detectorsmentioning

confidence: 99%

Recent Progress of Rare Earth Oxides for Sensor, Detector, and Electronic Device Applications: A Review

Hossain

Ahmed

Khan

et al. 2021

ACS Appl. Electron. Mater.

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Rare earth oxides (REOs) are deemed important from both industrial implementation and research insight perspectives. One of the most conspicuous attributes of REOs is sensing, which contributes significantly to the development of diversified and robust systems of sensors and detector devices. However, there has not been any organized review that has pointed out critical insights from the sensor, detector, and electronic device perspectives that can invoke further studies to investigate the prospective and commercially relevant areas to date. To address this limitation, this review undertakes a focused report approach. From this concise yet comprehensive review, it has been prominent that the most significant contributions to the sensing and detecting fields by the REOs are in electrochemical, temperature, humidity, radiation, gas, and biosensors. Moreover, in terms of electronic device development, REOs have had a significant impact on memory devices, metal oxide semiconductors, dielectric materials, capacitors, energy storage devices, and so on. Furthermore, one of the key findings of the study is that the REOs have flexible doping (e.g., Er3+, Yb3+, Y3+, etc.) capability combined with other host materials such as HfO2 film, SiO2 stacks, TiO2, SnO2 nanostructures, etc., which will likely make REO-based electrochemical sensor and biosensor development the most promising sector in the coming years. Despite the impressive aspects, biocompatibility issues in several biological and biomedical systems along with the hygroscopic nature of REOs in electronic devices remain as concerns. However, these issues can be addressed by the advancement of intricate technologies such as targeted manipulation of the electronic configuration of REOs, multifarious doping experiments to obtain alternative mechanisms, etc. to obtain superior biocompatibility, and device development systems that are noninvasive to the environment. From the commercialization front, memory devices and energy storage devices will be the focusing points for large-scale investors due to improved mechanical (i.e., Young’s modulus, intrinsic stress, etc.) and electrical (i.e., high dielectric constant, resistivity, relative permittivity, etc.) properties, while REO-based metal oxide semiconductor and capacitor development is likely to be research-oriented for the next few years before making the eventual move to futuristic applications at a large industrial scale. In short, this review reports a substantial number of relevant studies that will pave the way for further experimental and computational investigations on REOs and their sensor, detector, and electronic device aspects.

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Facile synthesis and characterization of erbium oxide (Er2O3) nanospheres embellished on reduced graphene oxide nanomatrix for trace-level detection of a hazardous pollutant causing Methemoglobinaemia

Cited by 36 publications

References 58 publications

Nanoarchitectonics of Hydroxyapatite/Molybdenum Trioxide/Graphene Oxide Composite for Efficient Antibacterial Activity

Nanoarchitectonics of Hydroxyapatite/Molybdenum Trioxide/Graphene Oxide Composite for Efficient Antibacterial Activity

SmFeO ₃ and SmFe _1‐x Er _x O ₃ based perovskite nanorods for improved oxygen and hydrogen evolution functions

Recent Progress of Rare Earth Oxides for Sensor, Detector, and Electronic Device Applications: A Review

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Facile synthesis and characterization of erbium oxide (Er2O3) nanospheres embellished on reduced graphene oxide nanomatrix for trace-level detection of a hazardous pollutant causing Methemoglobinaemia

Cited by 36 publications

References 58 publications

Nanoarchitectonics of Hydroxyapatite/Molybdenum Trioxide/Graphene Oxide Composite for Efficient Antibacterial Activity

Nanoarchitectonics of Hydroxyapatite/Molybdenum Trioxide/Graphene Oxide Composite for Efficient Antibacterial Activity

SmFeO 3 and SmFe 1‐x Er x O 3 based perovskite nanorods for improved oxygen and hydrogen evolution functions

Recent Progress of Rare Earth Oxides for Sensor, Detector, and Electronic Device Applications: A Review

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Product

Resources

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SmFeO ₃ and SmFe _1‐x Er _x O ₃ based perovskite nanorods for improved oxygen and hydrogen evolution functions