High temperature CO2 sorption using Ca(OH)2 in pilot scale packed column

Preetham, H.S.; Madhu, G. M.; Brijesh, Brijesh; Pai, K Vasantha Kumar

doi:10.5155/eurjchem.7.2.176-181.1391

Cited by 3 publications

(2 citation statements)

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“…Where in this equation formula, D crystal size, 𝛽 : full width at half maximum of the peak (FWHM), 𝜆 represent X-ray wavelength (1.54 Å), k is the shape factor which is always close to unity (0.9). As it the apparent peaks in the gure also conrms its agreement with the research and literature published by other researchers to prepare calcium oxide nanoparticles (Preetham et al, 2016) , where the crystallite size of the prepared nanoparticles is estimated to be about 30.991±2 nm at 600 mJ and 34.202±2.2 nm at 500 mJ. Clearly, from Figures 2A and 2B, the highest peak was at 38.02 • for the laser energies 500 and 600 mJ, while the lowest peak was at the angle of 67.59 • , where the anisotropy increases with an increase in particle size.…”

Section: Investigation Of the Crystal Structuresupporting

confidence: 90%

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Synthesis and Study of Structural Properties of Calcium Oxide Nanoparticles Produced by Laser-Induced Plasma and its Effect on Antibacterial Activity

Abbas

Aadim

2022

Sci. Technol. Indones

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A LIBS technique was used to investigate the antibacterial activity of calcium oxide nanoparticles (CaO NPs). CaO NPs were prepared using a Q-switched Nd: YAG pulsed laser with a fundamental wavelength of 1064 nm at different energies (400-600 mJ) and constant frequency (6 Hz). A calcium powder sample was prepared after being pressed into a disc with a diameter of 1 cm. Analyzing X-ray diffraction (XRD) showed the crystalline structure of CaO NPs, crystalline size was 30.99±2 and 34.20±2.2 nm for laser energy 500 and 600 mJ. (FE-SEM) to reveal the topography of produced CaO NPs, the results showed a homogenous compact and dense surface with the formation of CaO NPs like flakes, cubes, and tubes. Atomic force microscopy (AFM) has shown that the CaO NPs were nanoscale and had a coordinated surface structures. The results also revealed the stabilizing zeta potential of the prepared CaO NPs, average (ZP) -18.3±1.6 mV in 600 mJ and -8.8±2.3 mV for 500 mJ. Different laser energies used in preparing CaO NPs resulted in the varying killing of the number of bacteria Klebsiella pneumoniae and Staphylococcus aureus bacteria. Complete bacterial inhibition or cell growth inactivation was found when the laser energy prepared for the CaO NPs was 600 mJ.

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Section: Investigation Of the Crystal Structuresupporting

confidence: 90%

“…Whereas the increase in the laser energy and the interaction of laser pulses with the calcium sample in the beaker had an e ect on the size of the prepared CaO nanoparticles. The crystal size of the synthesized CaO nanoparticles was calculated from the Debye-Scherer equation (Preetham et al, 2016) :…”

Section: Investigation Of the Crystal Structurementioning

confidence: 99%