Cohesive properties of alkali halide crystals

Yadav, R.B.

doi:10.1016/0378-4363(82)90035-3

Cited by 3 publications

(7 citation statements)

References 8 publications

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“…This increases the resistance of the film [24]. The observed variation in resistivity is similar to the results reported on detection of LP gas by Shukla [24] using SnO 2 thin films, by Yadav et al [26] and Richa Srivastava [27] using ZnO nanostructures.…”

Section: Resultssupporting

confidence: 87%

“…The gas response originates due to the abstraction of hydrogen from hydrocarbons by the surface oxygen species. Despite the complexity of reactions, the sensing mechanism may be understood as follows [24,26,[34][35][36]:…”

Section: Resultsmentioning

confidence: 99%

“…While C n H 2n+2 represents hydrocarbon molecules, C n H 2n :O represents partially oxydized intermediates on the Cu 2 O surface. The actual reactions between hydrocarbons and surface oxygen species involve hydrocarbons and oxygenerated intermediates of various chain lengths [24,26,34]. As LP gas is admitted to the chamber, pressure on the film increases, causing the rate of adsorption to increase.…”

Section: Resultsmentioning

confidence: 99%

“…Detection of LP gas at low concentrations with a fast response is thus important to ensure user safety in avoiding hazards due to accidental leak of the gas. Several metal oxide materials such as SnO 2 [24,25], ZnO [26,27], TiO 2 [28], CdO [16], and their sensing properties have been investigated for the purpose of LP gas sensing. Bandara et al [23] recently reported the use of chlorine doped n-type Cu 2 O thin films having nano-scale surface morphology with grains of arbitrary shapes.…”

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confidence: 99%

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Electrodeposited n‐type cuprous oxide cubic nanostructures for liquefied petroleum gas sensing

Jayasingha

Jayathilaka

Gunewardene

et al. 2016

Physica Status Solidi (b)

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A surfactant free template assisted electrodeposition method was used to fabricate thick n‐type Cu2O films having cubic nanostructures for the detection of liquefied petroleum (LP) gas at low concentrations. Templates were fabricated by initially electrodepositing a p‐type Cu2O thin film on a Ti substrate followed by annealing that changed conductivity type of the film, as confirmed by Mott–Schottky and spectral response measurements. SEM measurements of resulting films showed nano‐cubic crystals having sizes of 150–300 nm. When exposed to a mixture of LP gas and dry air, the resistance of these films increased and the maximum response was recorded when films were maintained at 180 °C for all concentrations and it was independent of the surface morphology. At 180 °C, at the lowest tested LP gas concentration of 2 vol.%, a twofold increase in response was observed in the nano‐cubic films compared to the micro‐crystalline n‐type Cu2O films. This improvement in gas response is attributed to increased effective surface area of these nanostructured films. Compared to other LP gas sensing materials, Cu2O films showed very good response times and recovery times of ∼120 and ∼90 s, respectively.

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Section: Resultssupporting

confidence: 87%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

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Electrodeposited n‐type cuprous oxide cubic nanostructures for liquefied petroleum gas sensing

Jayasingha

Jayathilaka

Gunewardene

et al. 2016

Physica Status Solidi (b)

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“…[19] They possess attractive properties that enable a broad range of applications in energy conversion, energy storage fields, sensors, biomedical diagnostics, lubrication, catalysis, gas storage, electromagnetic shielding, and optical limiting. [20][21][22] One of the allotropic forms of carbon is the carbon nano-onions (CNOs), also called multilayered fullerenes. "Small" CNOs consist of 6 to 8 curved graphene layers with increasing diameters and distances between them of ca.…”

Section: Introductionmentioning

confidence: 99%

Carbon Nano‐Onion and Zinc Oxide Composites as an Electron Transport Layer in Inverted Organic Solar Cells

et al. 2019

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We report a facile chemical method to synthesize hybrid nanocomposites containing carbon nano-onions (CNOs) and zinc oxide or hydroxide. The structure, surface morphology, optical properties and surface area of the CNOs were characterized by X-ray diffraction, scanning electron microscopy with energy dispersive spectroscopy, transmission electron microscopy, thermogravimetric analysis, infrared and Raman spectroscopies, and adsorption/desorption N 2 techniques. For the first time, we demonstrate the fabrication of bulk heterojunction organic solar cell devices utilizing hybrid nanocomposites containing CNOs and ZnO as the electron transport layer. This configuration showed good photovoltaic performance with maximum external quantum efficiencies of 16.5 and 48.9% and power conversion efficiencies of 0.42 and 1.49% for the pristine ZnO and CNO/ ZnO (m CNO : m ZnO = 1 : 4) layers, respectively.[a] Dr.

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Determination of Carbon‐based Engineered Nanoparticles in Marketed Fish by Microwave‐assisted Extraction and Liquid Chromatography‐atmospheric Pressure Photoionization‐tandem Mass Spectrometry

Chen

Kuo

Wang

2014

J Chinese Chemical Soc

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An optimized method for the determination of two major carbon‐based engineered nanoparticles (C60 and C70) in marketed fish samples is described. The method involves the use of microwave‐assisted extraction (MAE) coupled with liquid chromatography ‐ tandem mass spectrometry with atmospheric pressure photoionization (LC‐APPI‐MS/MS). Factors affecting the extraction efficiency of the analytes from fish samples were optimized by a central composite design method. The optimal extraction temperature and time for MAE were found to be 233 °C for 22 min, and the extraction solution was composed of toluene and acetone in a ratio of 4.64:1. The limits of quantitation (LOQs) were 0.1 and 0.05 ng/g for C60 and C70, respectively. The precision for these analytes at two spiked levels, as indicated by relative standard deviations (RSDs), were less than 10% for both intra‐ and inter‐day analysis. Accuracy, expressed as the mean extraction recovery, was between 85 and 98%. The method was further validated based on EU Commission Decision 2002/657/EC, including a decision limit (CCα) and detection capability (CCβ) for marketed fish samples.

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Cohesive properties of alkali halide crystals

Cited by 3 publications

References 8 publications

Electrodeposited n‐type cuprous oxide cubic nanostructures for liquefied petroleum gas sensing

Electrodeposited n‐type cuprous oxide cubic nanostructures for liquefied petroleum gas sensing

Carbon Nano‐Onion and Zinc Oxide Composites as an Electron Transport Layer in Inverted Organic Solar Cells

Determination of Carbon‐based Engineered Nanoparticles in Marketed Fish by Microwave‐assisted Extraction and Liquid Chromatography‐atmospheric Pressure Photoionization‐tandem Mass Spectrometry

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