Impact of graphite impurities on the structure and optical properties of the sodium borate oxide glass

Gomaa, Hosam M.; Saudi, H. A.; Yahia, I.S.; Ibrahim, Medhat; Zahran, H.Y.

doi:10.1007/s10854-021-07130-8

Cited by 12 publications

(1 citation statement)

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“…Figures 2b and 2c show the deconvoluted FTIR spectra for graphene-free, S1, and graphene-rich samples, S4, respectively. According to the previous studies [18][19][20][21][22][23][24][25][26][27][28], the absorption bands due to borax' groups' vibration have been observed at 710, 13530, and 1550 cm -1 for BO3 groups, as well as 820-1060 cm -1 for BO4 groups. As seen in figures 2b and 2c, the graphene additives caused an increase in BO4 concentration and a decrease in BO3.…”

Section: Ftir: Drafting the Internal Structure;mentioning

confidence: 93%

Effect of Graphene additives on the structure and the optical parameters of the pure sodium borate glass

Gomaa¹,

Saudi²,

Yahia³

et al. 2021

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This work has been performed to knowledge the effect of insertion of pure graphene which is an organic two-dimensional material throughout the structural matrix of the pure sodium borate glass according to the chemical formula; 1mol. [Na2B4O7. 10H2O] + x g Graphene, where 0 ≤ x ≤ 3g. A set of four solid samples have been prepared using the fast cooling method from their melts at 1000±20oC. The prepared solids have been characterized using the XRD technique, which indicates the amorphous nature of all four samples, as well as showing an increase in the count rate as the content of graphene increases. FTIR spectral analysis clarified that the increase in the graphene content caused an increase in BO4 concentration with respect to BO3, as well as an amount of graphene that has been oxidized was shared as glass network formers. The measured values of both bulk density and the microhardness showed a slight increase as the graphene content increased. Optical measurement showed an increase in the optical absorbance, direct bandgap, indirect bandgap, and optical bandage. Also, the values of optoelectronic parameters increased when the graphene content increased, to be larger than that of the pure ZnO, and CO-ZnO which make the studied glass to be good candidates for nonlinear optical applications. Both the metallization factor and Urbach's energy showed that the crystallinity degree increased when the content of graphene increased.

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