TY  - JOUR
AU  - Nenadović, Snežana S.
AU  - Kljajević, Ljiljana M.
AU  - Ivanović, Marija M.
AU  - Mirković, Miljana M.
AU  - Radmilović, Nadežda
AU  - Rakočević, Lazar
AU  - Nenadović, Miloš
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10032
AB  - The present work was focused on doping of 1% and 5% both of Nd2O3 and Sm2O3 in geopolymer gels. One of the main goals was to determine the influence of the behavior of Nd and Sm as dopants and structural nanoparticles changes of the final geopolymer formed. It is shown that the disorder formed by alkali activation of metakaolin can accommodate the rare earth cations Nd3+ and Sm3+ into their aluminosilicate framework structure. The main geopolymerization product identified in gels is Al-rich (Na)-AS-H gel comprising Al and Si in tetrahedral coordination. Na+ ions were balancing the negative charge resulting from Al3+ in tetrahedral coordination. The changes in the structures of the final product (geopolymer/Nd2O3; Sm2O3), has been characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) analysis with energy dispersive spectrometry (EDS). Nucleation at the seed surfaces leads to the formation of phase-separated gels from rare earth phase early in the reaction process. It is confirmed that Nd and Sm have been shown to form unstable hydroxides Nd(OH)3 and Sm(OH)3 that are in equilibrium with the corresponding oxides.
T2  - Gels
T1  - Structural and Chemical Properties of Geopolymer Gels Incorporated with Neodymium and Samarium
VL  - 7
IS  - 4
SP  - 195
DO  - 10.3390/gels7040195
ER  - 

@article{
author = "Nenadović, Snežana S. and Kljajević, Ljiljana M. and Ivanović, Marija M. and Mirković, Miljana M. and Radmilović, Nadežda and Rakočević, Lazar and Nenadović, Miloš",
year = "2021",
abstract = "The present work was focused on doping of 1% and 5% both of Nd2O3 and Sm2O3 in geopolymer gels. One of the main goals was to determine the influence of the behavior of Nd and Sm as dopants and structural nanoparticles changes of the final geopolymer formed. It is shown that the disorder formed by alkali activation of metakaolin can accommodate the rare earth cations Nd3+ and Sm3+ into their aluminosilicate framework structure. The main geopolymerization product identified in gels is Al-rich (Na)-AS-H gel comprising Al and Si in tetrahedral coordination. Na+ ions were balancing the negative charge resulting from Al3+ in tetrahedral coordination. The changes in the structures of the final product (geopolymer/Nd2O3; Sm2O3), has been characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) analysis with energy dispersive spectrometry (EDS). Nucleation at the seed surfaces leads to the formation of phase-separated gels from rare earth phase early in the reaction process. It is confirmed that Nd and Sm have been shown to form unstable hydroxides Nd(OH)3 and Sm(OH)3 that are in equilibrium with the corresponding oxides.",
journal = "Gels",
title = "Structural and Chemical Properties of Geopolymer Gels Incorporated with Neodymium and Samarium",
volume = "7",
number = "4",
pages = "195",
doi = "10.3390/gels7040195"
}

Nenadović, S. S., Kljajević, L. M., Ivanović, M. M., Mirković, M. M., Radmilović, N., Rakočević, L.,& Nenadović, M.. (2021). Structural and Chemical Properties of Geopolymer Gels Incorporated with Neodymium and Samarium. in Gels, 7(4), 195.
https://doi.org/10.3390/gels7040195

Nenadović SS, Kljajević LM, Ivanović MM, Mirković MM, Radmilović N, Rakočević L, Nenadović M. Structural and Chemical Properties of Geopolymer Gels Incorporated with Neodymium and Samarium. in Gels. 2021;7(4):195.
doi:10.3390/gels7040195 .

Nenadović, Snežana S., Kljajević, Ljiljana M., Ivanović, Marija M., Mirković, Miljana M., Radmilović, Nadežda, Rakočević, Lazar, Nenadović, Miloš, "Structural and Chemical Properties of Geopolymer Gels Incorporated with Neodymium and Samarium" in Gels, 7, no. 4 (2021):195,
https://doi.org/10.3390/gels7040195 . .