Non-destructive Raman evaluation of a heavily doped surface layer fabricated by laser doping with B-doped Si nanoparticles

Momose, Miho; Furukawa, Yukio

doi:10.1016/j.mssp.2015.06.022

Cited by 2 publications

(1 citation statement)

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“…[33][34][35] There was no formation of peaks related to other TiO 2 phases or from boron doping. Momose et al 36 observed that the addition of boron atoms as charge carriers on silicon substrates with a concentration of less than 10 19 cm À3 did not promote changes in the Raman spectra as compared to pure silicon. The addition of boron did not promote the appearance of peaks.…”

Section: Resultsmentioning

confidence: 99%

Characterization and Photoluminescent, Photocatalytic and Antimicrobial Properties of Boron-Doped TiO2 Nanoparticles Obtained by Microwave-Assisted Solvothermic Method

Neto

Zanatta

Nascimento

et al. 2019

Journal of Elec Materi

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Boron doped TiO 2 :xB (x = 0 mol.%, 1 mol.%, 2 mol.%, 4 mol.% and 8 mol.%) was quickly synthesized by a microwave-assisted solvothermic method at 140°C for 10 min. The nanoparticles obtained were characterized by x-ray diffraction (XRD), Fourier transform infrared spectroscopy, Raman spectroscopy, photoluminescence, field emission scanning electron microscopy, electron microscopy and diffuse optical reflectance. The photocatalytic properties were estimated against methylene blue dye. The antimicrobial activity was measured by the disc diffusion technique against S. aureus and E. coli bacteria. The XRD patterns show that there was no formation of secondary phases and that all the peaks correspond to the anatase phase of TiO 2 . Rietveld's refinement showed that the addition of B 3+ in the TiO 2 lattice promotes a reduction in the size of the crystallites and this reduction it effectively increases the degradation capacity of the methylene blue dye, which after 50 min the 8%B sample degraded completely, while the pure TiO 2 sample reduced its concentration by 95%. Boron-doped TiO 2 was effective when reused and after the third cycle the photocatalytic activity of the powders was maintained. In addition, the incorporation of 8%B in the TiO 2 lattice resulted in an increase from 8.66 mm to 15.61 mm and 9.04 mm to 13.65 mm in the inhibition halos of the S. aureus and E. coli bacteria, respectively.

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Section: Resultsmentioning

confidence: 99%