Growth, molecular structure, NBO analysis and vibrational spectral analysis of l-tartaric acid single crystal

Sasikala, V.; Sajan, D.; Vijayan, N.; Chaitanya, Kadali; Raj, Monika; Joy, B.H. Selin

doi:10.1016/j.saa.2013.12.045

Cited by 34 publications

(13 citation statements)

References 114 publications

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“…9 Tartaric acid is a white crystalline, dibasic organic acid, which has been found to have many applications, for example, as acidier, antioxidant, avor enhancer, etc., in the wine, bakery and food industries, as well as in pharmaceutical industries. [10][11][12] The wide use of tartaric acid in various elds due to its excellent properties, including safety, large adsorption capacity, high adsorption efficiency and good biodegradability. [13][14][15] Ionic liquids (ILs) are a group of salts that exist in liquid form at relatively low temperatures (<100 C) and have recently received increasing attention as new environmentally friendly solvents.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of chitosan membranes

et al. 2018

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The present study investigates a new solvent system for the dissolution of chitosan and a new method for preparing chitosan membranes. First, aqueous tartaric acid was used to pretreat chitosan. Then, the chitosan was precipitated with ethanol or other regenerating agents, and 1.5 mL of 1-ethyl-3methylimidazolium acetate ([EMIM]AC) was added to obtain translucent suspensions. The chitosan membranes were prepared by casting the suspensions on glass plates and allowing solvent evaporation.The structure and properties of the films were investigated by SEM, FT-IR, XRD and TGA. Also, the mechanical properties, as well as physical and chemical characteristics, of the chitosan films were evaluated. The results indicated that the optimum dissolution time was 10 min and the most suitable drying temperature was 60 C. The thus-prepared film was moderately thick (about 0.02 mm) and had a smooth surface, without curling. The chitosan film prepared by ethanol regeneration had a tensile strength of up to 24 MPa, a minimum swelling degree of 78%, and a water vapor transmission rate of 270 g m À2 d À1 without the addition of plasticizer. View Article Online a Calculated from the Mark-Houwink equation: [h] ¼ KM a The molecular weight of chitosan M ¼ 398300.This journal is

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Section: Introductionmentioning

confidence: 99%

Preparation and characterization of chitosan membranes

et al. 2018

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“…In summary, the -COO asymmetric and symmetric stretching vibrations combined with -OH in-plane bending vibrations are observed at ~1589 and ~1380 cm -1 , respectively [20]. The peaks that correspond to the values of 1256, 1121 and 1074 cm -1 are attributed to the C-H in-plane stretching [21], C-OH and CH-OH stretching [22]. The relatively low intensity of the characteristic peaks attributable to the organic compounds can be explained by the complete decomposition of tartaric acid and the evaporation of the as-formed volatile components, and the existence of partially decomposed metal tartrates.…”

Section: Ft-ir Analysismentioning

confidence: 86%

Aqueous sol–gel synthesis, thermoanalytical, structural and vibrational studies of lithium aluminium molybdate (LiAlMo2O8)

Žalga¹,

Diktanaitė²,

Gaidamavičienė³

2022

chemija

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Aqueous tartaric acid-assisted sol–gel preparation technique was successfully applied to synthesise lithium aluminium molybdate with the initial composition of LiAl(MoO4)2. From the results of the thermal analysis and Xray diffraction measurement, the effect of tartaric acid as a ligand on the formation of homogeneous gel precursor was discussed. Besides, X-ray diffraction also revealed the crystallisation of the final LiAlMo2O8 ceramic below the temperature of 400°C. It was found that the initial composition of obtained ceramic significantly affected the formation of the impurity phase defined as AlMo2O12. The Rietveld refinement of the crystalline samples showed the tendency of crystallites growing with the increase of heat-treatment temperature. Similar trends of particle growing were also observed in the images of scanning electron microscopy (SEM) for the corresponding samples heat-treated at different temperatures. Finally, the Fourier-transform infrared spectroscopy (FT-IR) revealed the effect of both the surface morphology and the crystallite size on the intensity of characteristic vibration of the corresponding chemical bonds.

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“…The band gap and lower cut-off wavelength of few tartrate crystals are listed in Table 4 and these were compared with the present work. [34][35][36] Using the formula E g = 1240/λ (nm), 37 the band gap is calculated to be 3.85 eV.…”

Section: Uv-vis Nir Analysismentioning

confidence: 99%

Studies on growth and characterization of nicotinium tartrate single crystal: An efficient organic nonlinear optical material

Alexandar¹,

Lakshmanan²,

Priya³

et al. 2017

J. Nonlinear Optic. Phys. Mat.

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Organic single crystal of nicotinium tartrate (NT), an efficient nonlinear optical (NLO) material for frequency conversion, has been grown at a constant temperature at 40 • C within a period of 20 days by slow evaporation solution technique (SEST). Structural information and lattice dimensions were determined using powder X-ray diffractometer (PXRD) analysis. The functional groups and vibrational frequencies were identified using FTIR spectrum analysis with the range of 4000-450 cm −1 . Mechanical properties of the grown crystal were studied using Vickers microhardness tester. The optical properties of grown crystal were investigated using UV-Vis NIR spectrum analysis and it is confirmed that the crystal has very low absorption in the entire visible region. The dislocations and defects were studied by photoluminescence spectrum. The crystal has single stage melting, which was observed at 180 • C and there was no decomposition before its melting point. Piezoelectric, photoconductivity and chemical etching analysis have also been performed on the grown NT single crystals and the observed results were discussed. Nonlinear optical property of the material was measured using the powder Kurtz-Perry technique. 1750004-1 J. Nonlinear Optic. Phys. Mat. 2017.26. Downloaded from www.worldscientific.com by MONASH UNIVERSITY on 04/23/17. For personal use only. 1750004-2 J. Nonlinear Optic. Phys. Mat. 2017.26. Downloaded from www.worldscientific.com by MONASH UNIVERSITY on 04/23/17. For personal use only.

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Growth, molecular structure, NBO analysis and vibrational spectral analysis of l-tartaric acid single crystal

Cited by 34 publications

References 114 publications

Preparation and characterization of chitosan membranes

Preparation and characterization of chitosan membranes

Aqueous sol–gel synthesis, thermoanalytical, structural and vibrational studies of lithium aluminium molybdate (LiAlMo2O8)

Studies on growth and characterization of nicotinium tartrate single crystal: An efficient organic nonlinear optical material

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