TY  - JOUR
AU  - Savić-Biserčić, Marjetka
AU  - Marjanović, Budimir
AU  - Zasonska, Beata A.
AU  - Stojadinović, Stevan
AU  - Ćirić-Marjanović, Gordana N.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8847
AB  - Composites of metal organic framework MOF-5 and conjugated polymer polyaniline (PANI) were synthesized for the first time. Two procedures, which avoid humidity during the synthesis in order to preserve the structure of MOF-5, were applied. In the first one, dissolved part of nonconducting emeraldine base form of PANI (PANI-EB) in N,N΄-dimethylformamide was mixed with MOF-5 in different mass ratios. In the second one, the composites were prepared mechano-chemically, by using powdered conducting emeraldine salt form of PANI (PANI-ES) and solid MOF-5, mixed in chloroform in different mass ratios. The composites were characterized by various techniques: scanning electron microscopy (SEM), FTIR spectroscopy, nitrogen sorption and electrical conductivity measurements, XRD, and flame atomic absorption spectroscopy (FAAS). The procedure which used PANI-EB led to microporous PANI/MOF-5 composites with very high BET specific surface area, SBET (the highest value SBET of c.a. 2700 m2 g−1, even higher than SBET of starting pure MOF-5, showed the composite which contains 89 wt.% of MOF-5) and low conductivity (∼10-7 S cm−1). The second procedure which used PANI-ES gave microporous PANI/MOF-5 composites which showed moderate conductivities (the highest conductivity of 1.0 ⋅ 10−3 S cm-1 exhibited the composite which contains 25 wt.% of MOF-5) and also high SBET values, but lower than those measured for the composites with PANI-EB (the highest SBET of c.a. 850 m2 g-1 showed the composite of PANI doped with HCl which contains c.a. 77 wt.% of MOF-5). XRD measurements confirmed that predominately cubic crystalline structure of MOF-5 was present in almost all composites. © 2020 Elsevier B.V.
T2  - Synthetic Metals
T1  - Novel microporous composites of MOF-5 and polyaniline with high specific surface area
VL  - 262
SP  - 116348
DO  - 10.1016/j.synthmet.2020.116348
ER  - 

@article{
author = "Savić-Biserčić, Marjetka and Marjanović, Budimir and Zasonska, Beata A. and Stojadinović, Stevan and Ćirić-Marjanović, Gordana N.",
year = "2020",
abstract = "Composites of metal organic framework MOF-5 and conjugated polymer polyaniline (PANI) were synthesized for the first time. Two procedures, which avoid humidity during the synthesis in order to preserve the structure of MOF-5, were applied. In the first one, dissolved part of nonconducting emeraldine base form of PANI (PANI-EB) in N,N΄-dimethylformamide was mixed with MOF-5 in different mass ratios. In the second one, the composites were prepared mechano-chemically, by using powdered conducting emeraldine salt form of PANI (PANI-ES) and solid MOF-5, mixed in chloroform in different mass ratios. The composites were characterized by various techniques: scanning electron microscopy (SEM), FTIR spectroscopy, nitrogen sorption and electrical conductivity measurements, XRD, and flame atomic absorption spectroscopy (FAAS). The procedure which used PANI-EB led to microporous PANI/MOF-5 composites with very high BET specific surface area, SBET (the highest value SBET of c.a. 2700 m2 g−1, even higher than SBET of starting pure MOF-5, showed the composite which contains 89 wt.% of MOF-5) and low conductivity (∼10-7 S cm−1). The second procedure which used PANI-ES gave microporous PANI/MOF-5 composites which showed moderate conductivities (the highest conductivity of 1.0 ⋅ 10−3 S cm-1 exhibited the composite which contains 25 wt.% of MOF-5) and also high SBET values, but lower than those measured for the composites with PANI-EB (the highest SBET of c.a. 850 m2 g-1 showed the composite of PANI doped with HCl which contains c.a. 77 wt.% of MOF-5). XRD measurements confirmed that predominately cubic crystalline structure of MOF-5 was present in almost all composites. © 2020 Elsevier B.V.",
journal = "Synthetic Metals",
title = "Novel microporous composites of MOF-5 and polyaniline with high specific surface area",
volume = "262",
pages = "116348",
doi = "10.1016/j.synthmet.2020.116348"
}

Savić-Biserčić, M., Marjanović, B., Zasonska, B. A., Stojadinović, S.,& Ćirić-Marjanović, G. N.. (2020). Novel microporous composites of MOF-5 and polyaniline with high specific surface area. in Synthetic Metals, 262, 116348.
https://doi.org/10.1016/j.synthmet.2020.116348

Savić-Biserčić M, Marjanović B, Zasonska BA, Stojadinović S, Ćirić-Marjanović GN. Novel microporous composites of MOF-5 and polyaniline with high specific surface area. in Synthetic Metals. 2020;262:116348.
doi:10.1016/j.synthmet.2020.116348 .

Savić-Biserčić, Marjetka, Marjanović, Budimir, Zasonska, Beata A., Stojadinović, Stevan, Ćirić-Marjanović, Gordana N., "Novel microporous composites of MOF-5 and polyaniline with high specific surface area" in Synthetic Metals, 262 (2020):116348,
https://doi.org/10.1016/j.synthmet.2020.116348 . .

TY  - JOUR
AU  - Savić-Biserčić, Marjetka
AU  - Marjanović, Budimir
AU  - Vasiljević-Nedić, Bojana
AU  - Mentus, Slavko V.
AU  - Zasonska, Beata A.
AU  - Ćirić-Marjanović, Gordana N.
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S1387181118305766
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7969
AB  - Efficient and simple room temperature synthesis of pure phase metal-organic framework MOF-5 has been developed, based on the use of anhydrous zinc acetate, Zn(OAc)2, as a precursor, instead of zinc acetate dihydrate. Crucial influence of water on a reaction pathway was revealed. In order to obtain MOF-5, different amounts of water have been added into the solutions of Zn(OAc)2 in N,N-dimethylformamide (DMF) to prepare in situ zinc acetate hydrates with 0.25, 0.5, and 1.0 mol of water. Commercially available zinc acetate dihydrate was also used as a precursor for comparison. These solutions were mixed at room temperature with the solution of 1,4-benzenedicarboxylic acid in DMF in the absence of any base. Based on XRD, FTIR, and SEM measurements, it was shown that the optimal amount of water for the synthesis of completely pure, crystalline phase MOF-5 is 0.25–0.5 mol of water per one mole of Zn. The reaction systems with 1.0 and 2.0 mol of water per one mole of Zn also led to solids with MOF-5 as the dominant phase, but they also contain small amounts of another phase, formed due to the decomposition (hydrolysis) and/or distortion of the MOF-5 framework in the presence of excess amounts of water. The product synthesized in the system without any added water contains MOF-5 phase in a very small amount, while main phase is zinc 1,4-benzenedicarboxylate and/or zinc hydrogen 1,4-benzenedicarboxylate. Regular cubic submicro/microcrystal morphology exhibited the samples synthesized using 0.5 and 0.25 mol water per one mole of Zn (pure MOF-5), while for the samples synthesized at mole ratios H2O/Zn2+ = 1.0 and 2.0 other particle shapes are also seen. By nitrogen sorption measurements it was found that the highest values of BET specific surface area (1937 m2 g−1), micropore volume (0.83 cm3 g−1), and micropore area (1590 m2 g−1) showed MOF-5 prepared at mole ratio H2O/Zn2+ = 0.5, while the highest yield of MOF-5 is obtained with the theoretical mole ratio H2O/Zn2+ = 0.25. Thermal stability of synthesized materials was investigated by TGA. © 2018 Elsevier Inc.
T2  - Microporous and Mesoporous Materials
T1  - The quest for optimal water quantity in the synthesis of metal-organic framework MOF-5
VL  - 278
SP  - 23
EP  - 29
DO  - 10.1016/j.micromeso.2018.11.005
ER  - 

@article{
author = "Savić-Biserčić, Marjetka and Marjanović, Budimir and Vasiljević-Nedić, Bojana and Mentus, Slavko V. and Zasonska, Beata A. and Ćirić-Marjanović, Gordana N.",
year = "2019",
abstract = "Efficient and simple room temperature synthesis of pure phase metal-organic framework MOF-5 has been developed, based on the use of anhydrous zinc acetate, Zn(OAc)2, as a precursor, instead of zinc acetate dihydrate. Crucial influence of water on a reaction pathway was revealed. In order to obtain MOF-5, different amounts of water have been added into the solutions of Zn(OAc)2 in N,N-dimethylformamide (DMF) to prepare in situ zinc acetate hydrates with 0.25, 0.5, and 1.0 mol of water. Commercially available zinc acetate dihydrate was also used as a precursor for comparison. These solutions were mixed at room temperature with the solution of 1,4-benzenedicarboxylic acid in DMF in the absence of any base. Based on XRD, FTIR, and SEM measurements, it was shown that the optimal amount of water for the synthesis of completely pure, crystalline phase MOF-5 is 0.25–0.5 mol of water per one mole of Zn. The reaction systems with 1.0 and 2.0 mol of water per one mole of Zn also led to solids with MOF-5 as the dominant phase, but they also contain small amounts of another phase, formed due to the decomposition (hydrolysis) and/or distortion of the MOF-5 framework in the presence of excess amounts of water. The product synthesized in the system without any added water contains MOF-5 phase in a very small amount, while main phase is zinc 1,4-benzenedicarboxylate and/or zinc hydrogen 1,4-benzenedicarboxylate. Regular cubic submicro/microcrystal morphology exhibited the samples synthesized using 0.5 and 0.25 mol water per one mole of Zn (pure MOF-5), while for the samples synthesized at mole ratios H2O/Zn2+ = 1.0 and 2.0 other particle shapes are also seen. By nitrogen sorption measurements it was found that the highest values of BET specific surface area (1937 m2 g−1), micropore volume (0.83 cm3 g−1), and micropore area (1590 m2 g−1) showed MOF-5 prepared at mole ratio H2O/Zn2+ = 0.5, while the highest yield of MOF-5 is obtained with the theoretical mole ratio H2O/Zn2+ = 0.25. Thermal stability of synthesized materials was investigated by TGA. © 2018 Elsevier Inc.",
journal = "Microporous and Mesoporous Materials",
title = "The quest for optimal water quantity in the synthesis of metal-organic framework MOF-5",
volume = "278",
pages = "23-29",
doi = "10.1016/j.micromeso.2018.11.005"
}

Savić-Biserčić, M., Marjanović, B., Vasiljević-Nedić, B., Mentus, S. V., Zasonska, B. A.,& Ćirić-Marjanović, G. N.. (2019). The quest for optimal water quantity in the synthesis of metal-organic framework MOF-5. in Microporous and Mesoporous Materials, 278, 23-29.
https://doi.org/10.1016/j.micromeso.2018.11.005

Savić-Biserčić M, Marjanović B, Vasiljević-Nedić B, Mentus SV, Zasonska BA, Ćirić-Marjanović GN. The quest for optimal water quantity in the synthesis of metal-organic framework MOF-5. in Microporous and Mesoporous Materials. 2019;278:23-29.
doi:10.1016/j.micromeso.2018.11.005 .

Savić-Biserčić, Marjetka, Marjanović, Budimir, Vasiljević-Nedić, Bojana, Mentus, Slavko V., Zasonska, Beata A., Ćirić-Marjanović, Gordana N., "The quest for optimal water quantity in the synthesis of metal-organic framework MOF-5" in Microporous and Mesoporous Materials, 278 (2019):23-29,
https://doi.org/10.1016/j.micromeso.2018.11.005 . .