A study on the properties of potassium pentaborate crystals

Vigneshwaran, A.N.; Joseph, Antony; Raja, C. Ramachandra

doi:10.1016/j.ijleo.2016.03.035

Cited by 34 publications

(7 citation statements)

References 11 publications

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“…The B-O stretching vibrations of BO3 is confirmed by the peak at 920 cm -1 . Moreover the wagging of N-H vibrations are confirmed from the peaks at 782cm -1 , 765 cm -1 and 734 cm -1 [29]. OBO terminal bending and ring bending vibrations are assured by the peaks at 590 cm -1 and 508 cm -1 .…”

Section: Crystal Growth and Structural Confirmationmentioning

confidence: 73%

Enhanced third-order nonlinear optical properties of methyl orange dye-doped potassium penta borate octa hydrate (MOPPB) single crystals using CW diode laser for optical limiting applications

Kamatchi

Sriram

Sangeetha

et al. 2021

J Mater Sci: Mater Electron

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Single crystals of pure (PPB) and methyl orange dye doped Potassium Penta Borate octa hydrate (MOPPB) are grown by slow evaporation technique at ambient conditions. Single crystal X-Ray Diffraction study verifies the orthorhombic family of both pure and MO doped PPB crystals. FTIR assures the incorporation of MO dye into PPB crystals. The Reverse Indentation Size Effect (RISE) behavior and soft nature of both pure and MO doped PPB crystals are verified by the Micro Hardness Study. Absorbance studies shows PPB possess lower cut-off wavelength at 190 nm due to π-π* transitions whereas MOPPB crystals have two peaks, one at 278.60 nm due to π-π* transitions and the second one at 464.65 nm due to n-π* transitions. The inclusion of MO dye molecules alters the band structure resulting in reduction of bandgap to 5.7 eV (MOPPB) from 5.91 eV (PPB). Kurtz powder test shows green emission in both pure PPB and MOPPB with relative SHG efficiency of 0.45 times and 0.40 times that of SHG output of KDP. Z-scan studies performed with 785 nm laser excitation exposes that both pristine and MO doped PPB crystal exhibit reverse saturable nonlinear absorption and self-focusing nonlinear refraction which is thermo-optic in origin. Two photon absorption induced optical limiting action is demonstrated in both PPB and MOPPB crystals. Increase in NLO coefficient due to MO dye confirms the superiority of MOPPB than PPB for optical limiting applications.

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Section: Crystal Growth and Structural Confirmationmentioning

confidence: 73%

Enhanced third-order nonlinear optical properties of methyl orange dye-doped potassium penta borate octa hydrate (MOPPB) single crystals using CW diode laser for optical limiting applications

Kamatchi

Sriram

Sangeetha

et al. 2021

J Mater Sci: Mater Electron

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“…(2.1) Growth and characterisation of potassium pentaborate single crystals have been reported elsewhere by the author et al [10,11]. CHARACTERIZATION STUDIES Using powder-x software, the lattice parameters were calculated.…”

Section: Experimental a Crystal Growthmentioning

confidence: 99%

Growth and Characterization of Pure and Methionine Doped Potassium Pentaborate (KBO5) Single Crystals

Rangolia¹

2018

IJRASET

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Potassium pentaborate (KB 5 O 8. 4 H 2 O or K(H 4 B 5 O 10).2H 2 O or KBO 5) single crystals were grown by slow evaporation solution growth method at room temperature and the properties of the grown crystals were investigated. L-Methionine doped Potassium pentaborate (LMPPB) single crystals were grown by slow evaporation solution growth method and the characterization for the obtained materials were done using powder x-ray diffraction, FT-IR, UV-Vis and thermal analysis methods. Powder X-ray diffraction studies were carried out to determine the crystal structure and lattice parameters of the grown crystals by using powder-x software.. The optical transmittance of the crystal was determined by recording UV-Vis spectrum. pure KBO 5 and L-Methionine potassium pentaborate (LMPPB) single crystals were synthesized from its aqueous solution at ambient temperature. XRD confirmed the orthorhombic nature of the crystals. The UV-Vis spectroscopy highlighted the transparent nature of the LMPPB crystal. The various functionalities slot in the synthesized compound were analysed by FT-IR technique. The TGA analyses showed the thermal stability and the melting point of LMPPB.

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“…gerçekleştirilmiştir.Literatürde saf borik asit ile K 2 CO 3 1:10 potasyum karbonat:borik asit oranında sentez işlemi optimum koşul olarak belirlenmiştir [16]. Bu çalışmada ise ticari endüstriyel üretim borik asit kullanılarak KOH ile optimum üretim parametrelerine bakılmıştır.…”

Section: Determination Of Potassium Pentaborate Octahydrate Productiounclassified

Determination of potassium pentaborate octahydrate production conditions

Bilen¹

2018

Journal of Boron

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Inorganic boron compounds are used in construction, agriculture, cosmetics, textile, ceramic, nuclear energy, military industry, electronics and automotive industry. In this study potassium borate (xK 2 O.yB 2 O 3 .zH 2 O) which is one of these inorganic borates was produced by using boric acid and potassium hydroxide in aqueous medium. After specifying theoretical reaction conditions required for chemical reaction, different B 2 O 3 / K 2 O mixing ratios have been tried to obtain several products having different purities. In addition to some chemical analyzes, XRD and TG-DTA analyzes were also performed on the obtained products, after the characterization process, it was compared with the original product. Borax decahydrate, borax pentahydrate, potassium chloride, carbonate and hydroxide is used in conventional production technique of potassium pentaborate. In this study it is obtained by using KOH and low sulfate boric acid which is a commercial product of Eti Mine Works General Management in laboratory environment.

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A study on the properties of potassium pentaborate crystals

Cited by 34 publications

References 11 publications

Enhanced third-order nonlinear optical properties of methyl orange dye-doped potassium penta borate octa hydrate (MOPPB) single crystals using CW diode laser for optical limiting applications

Enhanced third-order nonlinear optical properties of methyl orange dye-doped potassium penta borate octa hydrate (MOPPB) single crystals using CW diode laser for optical limiting applications

Growth and Characterization of Pure and Methionine Doped Potassium Pentaborate (KBO5) Single Crystals

Determination of potassium pentaborate octahydrate production conditions

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