Microstructural Analysis of Thermally Treated Geopolymer Incorporated with Neodymium
Аутори
Knežević, SanjaIvanović, Marija
Kisić, Danilo
Nenadović, Snežana
Potočnik, Jelena
Nenadović, Miloš
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The following investigation presents the thermal treatment of geopolymer based on metakaolin, with the addition of 1% and 5% of neodymium in the form Nd2O3, at 300˚C, 600˚C and 900˚C. Six samples were synthesized in total. Samples GT1 and GT2 containing 1% and 5% of Nd2O3, and they were treated at 300˚C, while the samples GT3 and GT4 also had the same percentage composition of Nd2O3 and were treated at 600˚C, and the samples GT5 and GT6 were treated at 900˚C with the same percentage of Nd2O3. Physical and chemical changes in the aluminosilicate geopolymer matrix were monitored. The incorporation of rare earths into the polymer network of aluminosilicates has been proven to disrupt the basic structure of geopolymers, however, with increased temperature, these materials show even more unusual properties. DRIFT was employed to investigate the structural properties of thermally treated geopolymers. Additionally, TEM provided further insight into the structural changes induced by thermal tr...eatment and Nd2O3 doping. SEM was used to observe the effect of thermal treatment temperature (300˚C and 600˚C) on geopolymer porosity, which resulted in the appearance of large pores and cracks in the material. The UV/Vis spectra of the synthesized Nd3+ doped geopolymers exhibited attractive optical properties. The photoexcitation of electrons from the valence band to the conduction band in the geopolymer structure is responsible for the absorbance observed at 260 nm, while the minor peaks at slightly longer wavelengths can be linked to Nd3+
Кључне речи:
Geopolymers / Rare earth / Neodymium / Metakaolin / DRIFT / UV/VisИзвор:
26th Congress of the Society of Chemists and Technologists of Macedonia : the book of abstracts; September 20-23, Ohrid, Macedonia, 2023, 20-20Издавач:
- Society of Chemists and Technologists of Macedonia
Колекције
Институција/група
VinčaTY - CONF AU - Knežević, Sanja AU - Ivanović, Marija AU - Kisić, Danilo AU - Nenadović, Snežana AU - Potočnik, Jelena AU - Nenadović, Miloš PY - 2023 UR - https://vinar.vin.bg.ac.rs/handle/123456789/11748 AB - The following investigation presents the thermal treatment of geopolymer based on metakaolin, with the addition of 1% and 5% of neodymium in the form Nd2O3, at 300˚C, 600˚C and 900˚C. Six samples were synthesized in total. Samples GT1 and GT2 containing 1% and 5% of Nd2O3, and they were treated at 300˚C, while the samples GT3 and GT4 also had the same percentage composition of Nd2O3 and were treated at 600˚C, and the samples GT5 and GT6 were treated at 900˚C with the same percentage of Nd2O3. Physical and chemical changes in the aluminosilicate geopolymer matrix were monitored. The incorporation of rare earths into the polymer network of aluminosilicates has been proven to disrupt the basic structure of geopolymers, however, with increased temperature, these materials show even more unusual properties. DRIFT was employed to investigate the structural properties of thermally treated geopolymers. Additionally, TEM provided further insight into the structural changes induced by thermal treatment and Nd2O3 doping. SEM was used to observe the effect of thermal treatment temperature (300˚C and 600˚C) on geopolymer porosity, which resulted in the appearance of large pores and cracks in the material. The UV/Vis spectra of the synthesized Nd3+ doped geopolymers exhibited attractive optical properties. The photoexcitation of electrons from the valence band to the conduction band in the geopolymer structure is responsible for the absorbance observed at 260 nm, while the minor peaks at slightly longer wavelengths can be linked to Nd3+ PB - Society of Chemists and Technologists of Macedonia C3 - 26th Congress of the Society of Chemists and Technologists of Macedonia : the book of abstracts; September 20-23, Ohrid, Macedonia T1 - Microstructural Analysis of Thermally Treated Geopolymer Incorporated with Neodymium SP - 20 EP - 20 UR - https://hdl.handle.net/21.15107/rcub_vinar_11748 ER -
@conference{ author = "Knežević, Sanja and Ivanović, Marija and Kisić, Danilo and Nenadović, Snežana and Potočnik, Jelena and Nenadović, Miloš", year = "2023", abstract = "The following investigation presents the thermal treatment of geopolymer based on metakaolin, with the addition of 1% and 5% of neodymium in the form Nd2O3, at 300˚C, 600˚C and 900˚C. Six samples were synthesized in total. Samples GT1 and GT2 containing 1% and 5% of Nd2O3, and they were treated at 300˚C, while the samples GT3 and GT4 also had the same percentage composition of Nd2O3 and were treated at 600˚C, and the samples GT5 and GT6 were treated at 900˚C with the same percentage of Nd2O3. Physical and chemical changes in the aluminosilicate geopolymer matrix were monitored. The incorporation of rare earths into the polymer network of aluminosilicates has been proven to disrupt the basic structure of geopolymers, however, with increased temperature, these materials show even more unusual properties. DRIFT was employed to investigate the structural properties of thermally treated geopolymers. Additionally, TEM provided further insight into the structural changes induced by thermal treatment and Nd2O3 doping. SEM was used to observe the effect of thermal treatment temperature (300˚C and 600˚C) on geopolymer porosity, which resulted in the appearance of large pores and cracks in the material. The UV/Vis spectra of the synthesized Nd3+ doped geopolymers exhibited attractive optical properties. The photoexcitation of electrons from the valence band to the conduction band in the geopolymer structure is responsible for the absorbance observed at 260 nm, while the minor peaks at slightly longer wavelengths can be linked to Nd3+", publisher = "Society of Chemists and Technologists of Macedonia", journal = "26th Congress of the Society of Chemists and Technologists of Macedonia : the book of abstracts; September 20-23, Ohrid, Macedonia", title = "Microstructural Analysis of Thermally Treated Geopolymer Incorporated with Neodymium", pages = "20-20", url = "https://hdl.handle.net/21.15107/rcub_vinar_11748" }
Knežević, S., Ivanović, M., Kisić, D., Nenadović, S., Potočnik, J.,& Nenadović, M.. (2023). Microstructural Analysis of Thermally Treated Geopolymer Incorporated with Neodymium. in 26th Congress of the Society of Chemists and Technologists of Macedonia : the book of abstracts; September 20-23, Ohrid, Macedonia Society of Chemists and Technologists of Macedonia., 20-20. https://hdl.handle.net/21.15107/rcub_vinar_11748
Knežević S, Ivanović M, Kisić D, Nenadović S, Potočnik J, Nenadović M. Microstructural Analysis of Thermally Treated Geopolymer Incorporated with Neodymium. in 26th Congress of the Society of Chemists and Technologists of Macedonia : the book of abstracts; September 20-23, Ohrid, Macedonia. 2023;:20-20. https://hdl.handle.net/21.15107/rcub_vinar_11748 .
Knežević, Sanja, Ivanović, Marija, Kisić, Danilo, Nenadović, Snežana, Potočnik, Jelena, Nenadović, Miloš, "Microstructural Analysis of Thermally Treated Geopolymer Incorporated with Neodymium" in 26th Congress of the Society of Chemists and Technologists of Macedonia : the book of abstracts; September 20-23, Ohrid, Macedonia (2023):20-20, https://hdl.handle.net/21.15107/rcub_vinar_11748 .