TY  - JOUR
AU  - Nikolić, Aleksandar S.
AU  - Jović, Nataša G.
AU  - Rogan, Jelena
AU  - Kremenović, Aleksandar
AU  - Ristić, Mira
AU  - Meden, A.
AU  - Antić, Bratislav
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2403
AB  - Different synthesis methods for the preparation of nanocrystalline nickel ferrites are reported: the thermal decomposition of precursors, made of: (i) metal-nitrate salts with carboxylic acids (citric, malonic and tartaric), and (ii) metal-nitrate salts and polyethylene glycol (PEG), in the presence of potassium chloride as a capping agent. The as-prepared gel precursors were characterized by TGA/DTA, while the samples obtained after annealing at 450 degrees C were investigated by FTIR, FESEM, XRD and Mossbauer spectroscopy. Regardless of the type of carboxylic acid used, nanocrystallites prepared by (i) method are similar in size (11-16 nm), while the method (ii) gives crystallites similar to 33 nm in size with negligible microstrain. The differences in the lattice parameter, ranging from 8.3369(2) to 8.3574(2) angstrom, result from cation distribution, nonstoichiometry and structural imperfections in the nickel ferrite nanoparticles. The Mossbauer spectra analysis indicates existence of large distortions of tetrahedral and octahedral sites in these spinel compounds.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Carboxylic acids and polyethylene glycol assisted synthesis of nanocrystalline nickel ferrites
EP  - 6688
IS  - 6
SP  - 6681
VL  - 39
DO  - 10.1016/j.ceramint.2013.01.106
ER  - 

@article{
author = "Nikolić, Aleksandar S. and Jović, Nataša G. and Rogan, Jelena and Kremenović, Aleksandar and Ristić, Mira and Meden, A. and Antić, Bratislav",
year = "2013",
abstract = "Different synthesis methods for the preparation of nanocrystalline nickel ferrites are reported: the thermal decomposition of precursors, made of: (i) metal-nitrate salts with carboxylic acids (citric, malonic and tartaric), and (ii) metal-nitrate salts and polyethylene glycol (PEG), in the presence of potassium chloride as a capping agent. The as-prepared gel precursors were characterized by TGA/DTA, while the samples obtained after annealing at 450 degrees C were investigated by FTIR, FESEM, XRD and Mossbauer spectroscopy. Regardless of the type of carboxylic acid used, nanocrystallites prepared by (i) method are similar in size (11-16 nm), while the method (ii) gives crystallites similar to 33 nm in size with negligible microstrain. The differences in the lattice parameter, ranging from 8.3369(2) to 8.3574(2) angstrom, result from cation distribution, nonstoichiometry and structural imperfections in the nickel ferrite nanoparticles. The Mossbauer spectra analysis indicates existence of large distortions of tetrahedral and octahedral sites in these spinel compounds.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Carboxylic acids and polyethylene glycol assisted synthesis of nanocrystalline nickel ferrites",
pages = "6688-6681",
number = "6",
volume = "39",
doi = "10.1016/j.ceramint.2013.01.106"
}

Nikolić, A. S., Jović, N. G., Rogan, J., Kremenović, A., Ristić, M., Meden, A.,& Antić, B.. (2013). Carboxylic acids and polyethylene glycol assisted synthesis of nanocrystalline nickel ferrites. in Ceramics International
Elsevier Sci Ltd, Oxford., 39(6), 6681-6688.
https://doi.org/10.1016/j.ceramint.2013.01.106

Nikolić AS, Jović NG, Rogan J, Kremenović A, Ristić M, Meden A, Antić B. Carboxylic acids and polyethylene glycol assisted synthesis of nanocrystalline nickel ferrites. in Ceramics International. 2013;39(6):6681-6688.
doi:10.1016/j.ceramint.2013.01.106 .

Nikolić, Aleksandar S., Jović, Nataša G., Rogan, Jelena, Kremenović, Aleksandar, Ristić, Mira, Meden, A., Antić, Bratislav, "Carboxylic acids and polyethylene glycol assisted synthesis of nanocrystalline nickel ferrites" in Ceramics International, 39, no. 6 (2013):6681-6688,
https://doi.org/10.1016/j.ceramint.2013.01.106 . .

TY  - JOUR
AU  - Meden, A
AU  - McCusker, LB
AU  - Baerlocher, C
AU  - Rajić, Nevenka
AU  - Kaučič, Venčeslav
PY  - 2001
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/380
AB  - The crystal structure of a novel Ni-containing precursor to the molecular sieve AlPO4-34 (CHA framework type) has been determined in its as-synthesized form using high-resolution synchrotron powder diffraction data. One [Ni(1,2-diaminoethane)(2)O-2](2-) complex is found per chabazite-like cage in the triclinic unit cell Of C4H18N4NiAl6P6O26 (a = 9.0854(9) Angstrom, b = 9.3327(3) Angstrom, c = 8,936(1) Angstrom, alpha = 86.27(6)degrees, beta = 101.26(6)degrees, gamma = 92.72(5)degrees, P (1) over bar). Although the connectivity of the aluminophosphate framework is related to that of AlPO4-34, it is not identical because some P-O-Al bridges are broken. The Al atoms associated with this disruption of the connectivity form double Al-O-Al bridges and are five-coordinate, while the P atoms interact strongly with the Ni(II) complex ion to form an unusual P-O-Ni-O-P bridge across the chabazite cage. The triclinic deformation associated with these structural features disappears upon calcination, when the Ni(II) complex decomposes and the fully connected CHA framework type forms.
PB  - Elsevier, Amsterdam
T2  - Microporous and Mesoporous Materials
T1  - Rietveld refinement of a chabazite-like aluminophosphate containing a [Ni(1,2-diaminoethane)(2)O-2](2-) complex bridge
EP  - 274
IS  - 2-3
SP  - 269
VL  - 47
DO  - 10.1016/S1387-1811(01)00386-9
ER  - 

@article{
author = "Meden, A and McCusker, LB and Baerlocher, C and Rajić, Nevenka and Kaučič, Venčeslav",
year = "2001",
abstract = "The crystal structure of a novel Ni-containing precursor to the molecular sieve AlPO4-34 (CHA framework type) has been determined in its as-synthesized form using high-resolution synchrotron powder diffraction data. One [Ni(1,2-diaminoethane)(2)O-2](2-) complex is found per chabazite-like cage in the triclinic unit cell Of C4H18N4NiAl6P6O26 (a = 9.0854(9) Angstrom, b = 9.3327(3) Angstrom, c = 8,936(1) Angstrom, alpha = 86.27(6)degrees, beta = 101.26(6)degrees, gamma = 92.72(5)degrees, P (1) over bar). Although the connectivity of the aluminophosphate framework is related to that of AlPO4-34, it is not identical because some P-O-Al bridges are broken. The Al atoms associated with this disruption of the connectivity form double Al-O-Al bridges and are five-coordinate, while the P atoms interact strongly with the Ni(II) complex ion to form an unusual P-O-Ni-O-P bridge across the chabazite cage. The triclinic deformation associated with these structural features disappears upon calcination, when the Ni(II) complex decomposes and the fully connected CHA framework type forms.",
publisher = "Elsevier, Amsterdam",
journal = "Microporous and Mesoporous Materials",
title = "Rietveld refinement of a chabazite-like aluminophosphate containing a [Ni(1,2-diaminoethane)(2)O-2](2-) complex bridge",
pages = "274-269",
number = "2-3",
volume = "47",
doi = "10.1016/S1387-1811(01)00386-9"
}

Meden, A., McCusker, L., Baerlocher, C., Rajić, N.,& Kaučič, V.. (2001). Rietveld refinement of a chabazite-like aluminophosphate containing a [Ni(1,2-diaminoethane)(2)O-2](2-) complex bridge. in Microporous and Mesoporous Materials
Elsevier, Amsterdam., 47(2-3), 269-274.
https://doi.org/10.1016/S1387-1811(01)00386-9

Meden A, McCusker L, Baerlocher C, Rajić N, Kaučič V. Rietveld refinement of a chabazite-like aluminophosphate containing a [Ni(1,2-diaminoethane)(2)O-2](2-) complex bridge. in Microporous and Mesoporous Materials. 2001;47(2-3):269-274.
doi:10.1016/S1387-1811(01)00386-9 .

Meden, A, McCusker, LB, Baerlocher, C, Rajić, Nevenka, Kaučič, Venčeslav, "Rietveld refinement of a chabazite-like aluminophosphate containing a [Ni(1,2-diaminoethane)(2)O-2](2-) complex bridge" in Microporous and Mesoporous Materials, 47, no. 2-3 (2001):269-274,
https://doi.org/10.1016/S1387-1811(01)00386-9 . .

TY  - JOUR
AU  - Meden, A
AU  - Tuel, A
AU  - Rajić, Nevenka
AU  - Kaučič, Venčeslav
PY  - 1997
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/107
PB  - Amer Chemical Soc, Washington
T2  - Abstracts of Papers of the American Chemical Society
T1  - Structural investigation of the chabazite like aluminophosphate prepared in the presence of HF.
EP  - INOR
SP  - 830
VL  - 213
UR  - https://hdl.handle.net/21.15107/rcub_technorep_107
ER  - 

@article{
author = "Meden, A and Tuel, A and Rajić, Nevenka and Kaučič, Venčeslav",
year = "1997",
publisher = "Amer Chemical Soc, Washington",
journal = "Abstracts of Papers of the American Chemical Society",
title = "Structural investigation of the chabazite like aluminophosphate prepared in the presence of HF.",
pages = "INOR-830",
volume = "213",
url = "https://hdl.handle.net/21.15107/rcub_technorep_107"
}

Meden, A., Tuel, A., Rajić, N.,& Kaučič, V.. (1997). Structural investigation of the chabazite like aluminophosphate prepared in the presence of HF.. in Abstracts of Papers of the American Chemical Society
Amer Chemical Soc, Washington., 213, 830-INOR.
https://hdl.handle.net/21.15107/rcub_technorep_107

Meden A, Tuel A, Rajić N, Kaučič V. Structural investigation of the chabazite like aluminophosphate prepared in the presence of HF.. in Abstracts of Papers of the American Chemical Society. 1997;213:830-INOR.
https://hdl.handle.net/21.15107/rcub_technorep_107 .

Meden, A, Tuel, A, Rajić, Nevenka, Kaučič, Venčeslav, "Structural investigation of the chabazite like aluminophosphate prepared in the presence of HF." in Abstracts of Papers of the American Chemical Society, 213 (1997):830-INOR,
https://hdl.handle.net/21.15107/rcub_technorep_107 .