Microhardness, FTIR and transmission spectral studies of Mg2+ and Zn2+ doped nonlinear optical BTCC single crystals

Selvakumar, S.; Julius, J. Packiam; Rajasekar, S.; Ramanand, A.; Sagayaraj, P.

doi:10.1016/j.matchemphys.2004.05.015

Cited by 42 publications

(12 citation statements)

References 7 publications

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“…The new bands at 3500 and 1590 cm 21 were attributed to the NAH stretching, and the band at 1417 cm 21 was assigned to CAS stretching vibration. 34 The appearance of these characteristic bands demonstrated that thiourea was successfully incorporated into the polymeric matrix of HPS.…”

Section: Structure and Composition Determinationmentioning

confidence: 97%

Thiourea modified hyper‐crosslinked polystyrene resin for heavy metal ions removal from aqueous solutions

Yang

Huang

Yao

et al. 2017

J of Applied Polymer Sci

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A hyper-crosslinked resin chemically modified with thiourea (TM-HPS) was synthesized, characterized, and evaluated for the removal of heavy metal ions (Pb 21 , Cd 21 , and Cu 21 ) from aqueous solutions. The structural characterization results showed that a few thiourea groups were grafted on the surface of the resin with a big BET surface area and a large number of narrow micropores.Various experimental conditions such as pH, contact time, temperature, and initial metal concentration of the three heavy metal ions onto TM-HPS were investigated systematically. The results indicated that the prepared resin was effective for the removal of the heavy metal ions from aqueous solutions. The isotherm data could be better fitted by Langmuir model, yielding maximum adsorption capacities of 689.65, 432.90, and 290.69 mg/g for Pd 21 , Cd 21 , and Cu 21 , respectively. And the adsorption kinetics of the three metal ions followed the pseudo-second-order equation. FTIR and XPS analysis of TM-HPS before and after adsorption further revealed that the adsorption mechanism could be a synergistic effect between functional groups and metal ions and electrostatic attraction, which may provide a new insight into the design of highly effective adsorbents and their potential technological applications for the removal of heavy metal ions from aqueous solutions.

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Section: Structure and Composition Determinationmentioning

confidence: 97%

Thiourea modified hyper‐crosslinked polystyrene resin for heavy metal ions removal from aqueous solutions

Yang

Huang

Yao

et al. 2017

J of Applied Polymer Sci

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“…The SHG efficiency of BTCC is 0.73 times higher than urea [17]. It also ____________________ possesses good mechanical properties which are comparable with KDP [18]. Another remarkable feature of BTCC is that it has a high laser damage threshold [19].…”

Section: Introductionmentioning

confidence: 99%

“…Several dopants can affect the structural and physical properties of the host compound [8,18,[22][23][24]. We can dope various dopants to enhance the nonlinear properties of host compounds.…”

Section: Introductionmentioning

confidence: 99%

Growth and characterization of glycine doped bis thiourea cadmium chloride single crystal

Dhumane

Hussaini

Dongre

et al. 2009

Cryst. Res. Technol.

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Single crystal of 2 mol% glycine doped Bis Thiourea Cadmium Chloride, a semi organic nonlinear optical material has been grown by slow evaporation technique. Good quality single crystal with dimension 14 × 12 × 5 mm3 was harvested after 35 days. The influence of amino acid glycine was studied for 1, 2 and 3 mol% glycine doped Bis Thiourea Cadmium Chloride by Kurtz and Perry powder second harmonic generation test and compared with pure Bis Thiourea Cadmium Chloride which confirms the enhancement of second harmonic generation property of glycine doped Bis Thiourea Cadmium Chloride. The large enhancement was found for 2 mol% glycine doping. The grown crystal was characterized by various characterizations viz. single crystal X‐ray diffraction, energy dispersive X‐ray (EDAX), Fourier Transform Infrared Spectroscopy (FTIR) analysis, UV‐visible absorption, thermo gravimetric analysis (TGA). (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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“…8,9 The centrosymmetric thiourea molecule, when combined with inorganic salt yield noncentrosymmetric complexes which has the nonlinear optical properties. 10 Owing to this basic nature L-lysine monohydrochloride form a number of salts with different organic and inorganic salts, which also showed NLO properties.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, growth and characterization of amino acid based semiorganic crystal bis-thiourea l-lysine monohydrochloride

Tamilselvi¹,

Arunadevi²,

Sivavishnu³

et al. 2017

Int J Sci Rep

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Background: We report on synthesis, growth and characterization of Bis-thiourea L-lysine monohydrochloride (BTLM) crystal.Methods: Bis-thiourea L-lysine momohydrochloride (BTLM) crystal were grown by solution growth method in the molar ratio 1:1 at room temperature.Results: Transparent and defect free crystal of BTLM were harvested in the period of 40-45 days with dimension 7mm × 4mm × 2mm. Single crystal XRD analysis revealed that the crystal system belongs to Orthorhombic with cell parameters a= 14.41 Å, b= 5.89 Å and c= 15.52 Å. The sharp and well defined Bragg peaks observed in the powder XRD pattern confirm the crystalline nature of BTLM crystal. The presences of functional groups in the grown crystal BTLM were identified by FT-IR analysis. The fluorescence spectral study was carried out in the range of 280–500 nm. Second harmonic generation (SHG) of powdered BTLM sample was tested using Nd: YAG laser and is found to be 0.55 times that of potassium dihydrogen orthophosphate. The mechanical strength of the BTLM crystal was evaluated and it describes that the Vickers hardness number of BTLM is found to be increase with the applied load. The work hardening co-efficient (n) has been calculated from the slope of straight line between log P and log d. The dielectric study of BTLM was carried out as a function of frequency at different temperature.Conclusions: From the result we confirm that the BTLM crystals have good physicochemical properties. So, the grown BTLM crystal was suitable candidate for nonlinear optical applications.

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Microhardness, FTIR and transmission spectral studies of Mg2+ and Zn2+ doped nonlinear optical BTCC single crystals

Cited by 42 publications

References 7 publications

Thiourea modified hyper‐crosslinked polystyrene resin for heavy metal ions removal from aqueous solutions

Thiourea modified hyper‐crosslinked polystyrene resin for heavy metal ions removal from aqueous solutions

Growth and characterization of glycine doped bis thiourea cadmium chloride single crystal

Synthesis, growth and characterization of amino acid based semiorganic crystal bis-thiourea l-lysine monohydrochloride

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