Vibrational Properties Of CuO Nanoparticles Synthesized By Hydrothermal Technique

Chakraborty, Soumee; Das, Alok Kumar; Begum, Mahbuba; Dhara, Sandip; Tyagi, A. K.

doi:10.1063/1.3606120

Cited by 15 publications

(5 citation statements)

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“…Fig. 1 shows the XRD patterns of CuO synthesized by hydrothennal method [18]. This pattern reveals intense peaks 581 at 35.5°, and 38.7° which correspond to (hkl) values of (002), and (111).…”

Section: Biojilm Formation Assay and Biojilm Quantificationmentioning

confidence: 95%

Antibiofilm activity of nano sized CuO

Murthy

Venugopalan

Arunya

et al. 2011

International Conference on Nanoscience, Engineering and Technology (ICONSET 2011)

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Antibiofilm properties of bulk and nano-sized copper oxide (CuO) were investigated using four species of bacteria viz: Staphylococcus aureus, E. coli, Pseudomonas aeuriginosa (PA01) and Pseudomonas putida. The effect of both commercial and synthesized nanoparticles on biofilm formation was investigated using different concentrations 0.02, 0.12, 0.24, 0.5, 1.0, 1.2, 1.4 & 1.8 I1g / mL). Both bulk (91 % reduction) and nano-sized (93% reduction) particles significantly reduced biofilm formation in all the four species of bacteria. Concentration and size/shape of nanoparticles seemed to influence biofilm inhibition. Increase in NP concentration from 0.02 to 1.8 I1g/mL resulted in a marginal increase in inhibition. While a similar increase in concentration of bulk particles, resulted in 18% decrease in biofilm inhibition. Differences in biofilm inhibition between bulk and nano-sized particles were marginal at low concentrations (0.02, 0.12 & 0.24I1g/mL), whereas prominent differences were observed from concentration of 0.5 I1g/mL onwards for the bulk particles. The decrease in inhibition efficiency of bulk nanoparticles with increase in concentration may be attributed to the differences in size, shape, aggregation and settling behaviour. In general, higher efficiency was observed with S. aureus, E. coli and P. putida biofilms, whereas P. aeuriginosa cells showed more resistance in the presence of CuO nanoparticles. Results of the present study indicated that size and shape of the nanoparticles, seem to have an influence on the effective concentration, required for inhibition of biofilms.

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Section: Biojilm Formation Assay and Biojilm Quantificationmentioning

confidence: 95%

Antibiofilm activity of nano sized CuO

Murthy

Venugopalan

Arunya

et al. 2011

International Conference on Nanoscience, Engineering and Technology (ICONSET 2011)

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“…According to some studies performed on Cu oxide compounds, this band corresponds to an additional CuO Raman active mode. [53][54][55][56] The Raman band at 714 cm −1 is absent, instead a peak at 724 cm −1 is seen after 6 min LDH synthesis (Fig. 8c).…”

Section: Resultsmentioning

confidence: 93%

“…722 cm −1 which was associated to the ( ) + Cu NO 3 complex. 54 The latter assignment is credible, considering the environment close to the IMC.…”

Section: Resultsmentioning

confidence: 96%

“…In line with the Raman data obtained in the literature on copperbased substrates, this band can be ascribed to one of the CuO vibration modes. [50][51][52][53][54] The increase of the intensity and the sharpness of the peak was justified by a possible decrease in the grain size of the CuO particles. 52 The absence of the Raman band associated to CuO at 15 min can be explained by the strong coverage of the area with LDH flakes.…”

Section: Resultsmentioning

confidence: 99%

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The Role of Cu-Based Intermetallic on the Direct Growth of a ZnAl LDH Film on AA2024

Bouali

Serdechnova

Yasakau

et al. 2022

J. Electrochem. Soc.

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The direct ZnAl layered double hydroxide growth on AA2024 is a fast-occurring reaction, yet is characterized by an inhomogeneous film thickness. It has been shown that at the periphery of Cu-rich intermetallic, the flakes tend to be larger and denser. A combination of in situ and ex situ measurements were used to monitor the changes in the layered double hydroxide film grown on the regions of intermetallics. Immediately after immersion, an activation of the intermetallics is observed due to the dealloying process with an almost immediate film growth. Dealloying is followed by trenching of the adjacent Al matrix leading to an excessive production of large and dense layered double hydroxide flakes at the periphery of the intermetallic. However, the scanning electron microscopy cross-section images revealed that the trenching process leads to defects in the area surrounding the intermetallic. This could weaken the corrosion resistance performance of the layered double hydroxide conversion coating and lead to adhesion failure of consecutive polymer coatings. Nevertheless, this work highlights a few advantages and drawbacks of the layered double hydroxide conversion coatings and pathways to its potential optimization and improvement.

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“…CuO belongs to the C 6 2h space group with two molecules per primitive cell. 29 One can find the zone center normal mode ( ) using the following Equation 3:…”

Section: Resultsmentioning

confidence: 99%

Enhanced Sensitivity of Nanostructured Copper Oxide for Non-Enzymatic Glucose Biosensing

Sharma

Chawla

Randhawa

2016

J. Electrochem. Soc.

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The present work describes a facile synthesis of candy like nanostructured copper oxide (NCO). A simple wet precipitation method was employed to synthesize NCO. The synthesized NCO was characterized using X-ray diffraction, UV-vis spectroscopy, Raman spectroscopy and electron microscopy. Glucose sensing of synthesized NCO was done using a three electrode electrochemical workstation. The NCO showed enhanced sensitivity of 1729 μAmM−1 cm−2 with a detection limit of 0.9 μM. The sensor also showed good selectivity toward glucose in the presence of interfering agents and also had accordance with the pathology lab data when tested in real blood samples.

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Vibrational Properties Of CuO Nanoparticles Synthesized By Hydrothermal Technique

Cited by 15 publications

References 0 publications

Antibiofilm activity of nano sized CuO

Antibiofilm activity of nano sized CuO

The Role of Cu-Based Intermetallic on the Direct Growth of a ZnAl LDH Film on AA2024

Enhanced Sensitivity of Nanostructured Copper Oxide for Non-Enzymatic Glucose Biosensing

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