From titania to titanates: Phase and morphological transition in less alkaline medium under mild conditions
Само за регистроване кориснике
2019
Аутори
Simović, B.Dapčević, Aleksandra
Zdravković, J.
Tasić, N.
Kovač, S.
Krstić, Jugoslav
Branković, Goran
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
In this work, nine products were prepared by modifying the experimental conditions (6, 12 and 18 h at 110, 135 and 160 °C) of hydrothermal treatment of starting nanoanatase in significantly less concentrated alkaline medium than usual in order to obtain a pure titanate phase. The nanocrystalline samples were characterized by XRPD, FESEM, HRTEM/SAED, EDS, TG, FT-IR, UV-Vis and BET analyses. The results revealed that the structure, texture, morphology and band gap energy of samples strongly depend on conditions of hydrothermal treatment. The intensification of hydrothermal treatment significantly increases the solubility of TiO2 promoting the changes in morphology from nearly spherical titania nanoparticles to elongated titanate nanosheets. The single titanate phase was obtained after energetically the most intensive treatment, i.e. 18 h at 160 °C. The step-by-step optimization was thus necessary to finally distinguish the titanates from titania in terms of structural and spectral proper...ties and to finally allow the clarification of long-standing confusion between titania and titanates. The obtained single titanate phase was furtherly used to fabricate a humidity sensor, which showed remarkably rapid response and quick recovery time.
Кључне речи:
Humidity sensor / Hydrothermal treatment / Nanoparticles / Nanosheets / Titanate / TitaniaИзвор:
Journal of Alloys and Compounds, 2019, 810-819Издавач:
- Elsevier
Финансирање / пројекти:
- 0-3D наноструктуре за примену у електроници и обновљивим изворима енергије: синтеза, карактеризација и процесирање (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45007)
DOI: 10.1016/j.jallcom.2018.12.039
ISSN: 0925-8388
WoS: 000457845900095
Scopus: 2-s2.0-85058412272
Институција/група
IHTMTY - JOUR AU - Simović, B. AU - Dapčević, Aleksandra AU - Zdravković, J. AU - Tasić, N. AU - Kovač, S. AU - Krstić, Jugoslav AU - Branković, Goran PY - 2019 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/2495 AB - In this work, nine products were prepared by modifying the experimental conditions (6, 12 and 18 h at 110, 135 and 160 °C) of hydrothermal treatment of starting nanoanatase in significantly less concentrated alkaline medium than usual in order to obtain a pure titanate phase. The nanocrystalline samples were characterized by XRPD, FESEM, HRTEM/SAED, EDS, TG, FT-IR, UV-Vis and BET analyses. The results revealed that the structure, texture, morphology and band gap energy of samples strongly depend on conditions of hydrothermal treatment. The intensification of hydrothermal treatment significantly increases the solubility of TiO2 promoting the changes in morphology from nearly spherical titania nanoparticles to elongated titanate nanosheets. The single titanate phase was obtained after energetically the most intensive treatment, i.e. 18 h at 160 °C. The step-by-step optimization was thus necessary to finally distinguish the titanates from titania in terms of structural and spectral properties and to finally allow the clarification of long-standing confusion between titania and titanates. The obtained single titanate phase was furtherly used to fabricate a humidity sensor, which showed remarkably rapid response and quick recovery time. PB - Elsevier T2 - Journal of Alloys and Compounds T1 - From titania to titanates: Phase and morphological transition in less alkaline medium under mild conditions SP - 810 EP - 819 DO - 10.1016/j.jallcom.2018.12.039 ER -
@article{ author = "Simović, B. and Dapčević, Aleksandra and Zdravković, J. and Tasić, N. and Kovač, S. and Krstić, Jugoslav and Branković, Goran", year = "2019", abstract = "In this work, nine products were prepared by modifying the experimental conditions (6, 12 and 18 h at 110, 135 and 160 °C) of hydrothermal treatment of starting nanoanatase in significantly less concentrated alkaline medium than usual in order to obtain a pure titanate phase. The nanocrystalline samples were characterized by XRPD, FESEM, HRTEM/SAED, EDS, TG, FT-IR, UV-Vis and BET analyses. The results revealed that the structure, texture, morphology and band gap energy of samples strongly depend on conditions of hydrothermal treatment. The intensification of hydrothermal treatment significantly increases the solubility of TiO2 promoting the changes in morphology from nearly spherical titania nanoparticles to elongated titanate nanosheets. The single titanate phase was obtained after energetically the most intensive treatment, i.e. 18 h at 160 °C. The step-by-step optimization was thus necessary to finally distinguish the titanates from titania in terms of structural and spectral properties and to finally allow the clarification of long-standing confusion between titania and titanates. The obtained single titanate phase was furtherly used to fabricate a humidity sensor, which showed remarkably rapid response and quick recovery time.", publisher = "Elsevier", journal = "Journal of Alloys and Compounds", title = "From titania to titanates: Phase and morphological transition in less alkaline medium under mild conditions", pages = "810-819", doi = "10.1016/j.jallcom.2018.12.039" }
Simović, B., Dapčević, A., Zdravković, J., Tasić, N., Kovač, S., Krstić, J.,& Branković, G.. (2019). From titania to titanates: Phase and morphological transition in less alkaline medium under mild conditions. in Journal of Alloys and Compounds Elsevier., 810-819. https://doi.org/10.1016/j.jallcom.2018.12.039
Simović B, Dapčević A, Zdravković J, Tasić N, Kovač S, Krstić J, Branković G. From titania to titanates: Phase and morphological transition in less alkaline medium under mild conditions. in Journal of Alloys and Compounds. 2019;:810-819. doi:10.1016/j.jallcom.2018.12.039 .
Simović, B., Dapčević, Aleksandra, Zdravković, J., Tasić, N., Kovač, S., Krstić, Jugoslav, Branković, Goran, "From titania to titanates: Phase and morphological transition in less alkaline medium under mild conditions" in Journal of Alloys and Compounds (2019):810-819, https://doi.org/10.1016/j.jallcom.2018.12.039 . .