Preparation, characterization and photocatalytic activity of lanthanum and vanadium co-doped mesoporous TiO2 for azo-dye degradation
Само за регистроване кориснике
2013
Аутори
Nesic, JelenaManojlović, Dragan
Anđelković, Ivan
Dojčinović, Biljana
Vulić, Predrag
Krstić, Jugoslav
Roglić, Goran
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Titanium dioxide photocatalysts co-doped with lanthanum and vanadium were prepared by a facile microwave-assisted hydrothermal method and characterized by XRD, SEM, N-2 physisorption at 77 K and DRS. The characterization showed that co-doped TiO2 samples have a high degree of crystallinity and existence of fully anatase phase. It was found that all the synthesized catalysts have the mesoporous structure. The co-doped TiO2 samples have larger BET surface areas and the mesopores volume than pure TiO2 and La doped samples. The vanadium co-doping contributes to the extension of absorption into the visible region. The photocatalytic activity of the samples was evaluated by the decolorization of textile dye Reactive Blue 52 in aqueous solutions under sun-like radiation. Compared with La singly doped TiO2, the co-doped catalysts showed an important improvement of photoactivity. The photocatalyst with 2% (w/w) La and 0.02% (w/w) V appeared to be the most photoactive. Optimal catalyst loading a...nd the kinetics of degradation were also studied. Demonstrating higher photodegradation efficiency for RB than commercially available TiO2 Evonik P25, easy separation from suspension by spontaneous sedimentation and reusability of the catalyst, make this photocatalyst suitable for wastewater treatment.
Кључне речи:
Microwave / Mesoporous titanium dioxide / Co-doped / Lanthanum / Vanadium / Reactive Blue 52Извор:
Journal of Molecular Catalysis A: Chemical, 2013, 378, 67-75Издавач:
- Elsevier
Финансирање / пројекти:
- Примена унапређених оксидационих процеса и наноструктурисаних оксидних материјала за уклањање загађивача из животне средине, развој и оптимизација инструменталних техника за праћење ефикасности (RS-MESTD-Basic Research (BR or ON)-172030)
Напомена:
- The peer-reviewed version: http://cer.ihtm.bg.ac.rs/handle/123456789/3132
DOI: 10.1016/j.molcata.2013.05.018
ISSN: 1381-1169
WoS: 000324789600009
Scopus: 2-s2.0-84879450556
Институција/група
IHTMTY - JOUR AU - Nesic, Jelena AU - Manojlović, Dragan AU - Anđelković, Ivan AU - Dojčinović, Biljana AU - Vulić, Predrag AU - Krstić, Jugoslav AU - Roglić, Goran PY - 2013 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/1190 AB - Titanium dioxide photocatalysts co-doped with lanthanum and vanadium were prepared by a facile microwave-assisted hydrothermal method and characterized by XRD, SEM, N-2 physisorption at 77 K and DRS. The characterization showed that co-doped TiO2 samples have a high degree of crystallinity and existence of fully anatase phase. It was found that all the synthesized catalysts have the mesoporous structure. The co-doped TiO2 samples have larger BET surface areas and the mesopores volume than pure TiO2 and La doped samples. The vanadium co-doping contributes to the extension of absorption into the visible region. The photocatalytic activity of the samples was evaluated by the decolorization of textile dye Reactive Blue 52 in aqueous solutions under sun-like radiation. Compared with La singly doped TiO2, the co-doped catalysts showed an important improvement of photoactivity. The photocatalyst with 2% (w/w) La and 0.02% (w/w) V appeared to be the most photoactive. Optimal catalyst loading and the kinetics of degradation were also studied. Demonstrating higher photodegradation efficiency for RB than commercially available TiO2 Evonik P25, easy separation from suspension by spontaneous sedimentation and reusability of the catalyst, make this photocatalyst suitable for wastewater treatment. PB - Elsevier T2 - Journal of Molecular Catalysis A: Chemical T1 - Preparation, characterization and photocatalytic activity of lanthanum and vanadium co-doped mesoporous TiO2 for azo-dye degradation VL - 378 SP - 67 EP - 75 DO - 10.1016/j.molcata.2013.05.018 ER -
@article{ author = "Nesic, Jelena and Manojlović, Dragan and Anđelković, Ivan and Dojčinović, Biljana and Vulić, Predrag and Krstić, Jugoslav and Roglić, Goran", year = "2013", abstract = "Titanium dioxide photocatalysts co-doped with lanthanum and vanadium were prepared by a facile microwave-assisted hydrothermal method and characterized by XRD, SEM, N-2 physisorption at 77 K and DRS. The characterization showed that co-doped TiO2 samples have a high degree of crystallinity and existence of fully anatase phase. It was found that all the synthesized catalysts have the mesoporous structure. The co-doped TiO2 samples have larger BET surface areas and the mesopores volume than pure TiO2 and La doped samples. The vanadium co-doping contributes to the extension of absorption into the visible region. The photocatalytic activity of the samples was evaluated by the decolorization of textile dye Reactive Blue 52 in aqueous solutions under sun-like radiation. Compared with La singly doped TiO2, the co-doped catalysts showed an important improvement of photoactivity. The photocatalyst with 2% (w/w) La and 0.02% (w/w) V appeared to be the most photoactive. Optimal catalyst loading and the kinetics of degradation were also studied. Demonstrating higher photodegradation efficiency for RB than commercially available TiO2 Evonik P25, easy separation from suspension by spontaneous sedimentation and reusability of the catalyst, make this photocatalyst suitable for wastewater treatment.", publisher = "Elsevier", journal = "Journal of Molecular Catalysis A: Chemical", title = "Preparation, characterization and photocatalytic activity of lanthanum and vanadium co-doped mesoporous TiO2 for azo-dye degradation", volume = "378", pages = "67-75", doi = "10.1016/j.molcata.2013.05.018" }
Nesic, J., Manojlović, D., Anđelković, I., Dojčinović, B., Vulić, P., Krstić, J.,& Roglić, G.. (2013). Preparation, characterization and photocatalytic activity of lanthanum and vanadium co-doped mesoporous TiO2 for azo-dye degradation. in Journal of Molecular Catalysis A: Chemical Elsevier., 378, 67-75. https://doi.org/10.1016/j.molcata.2013.05.018
Nesic J, Manojlović D, Anđelković I, Dojčinović B, Vulić P, Krstić J, Roglić G. Preparation, characterization and photocatalytic activity of lanthanum and vanadium co-doped mesoporous TiO2 for azo-dye degradation. in Journal of Molecular Catalysis A: Chemical. 2013;378:67-75. doi:10.1016/j.molcata.2013.05.018 .
Nesic, Jelena, Manojlović, Dragan, Anđelković, Ivan, Dojčinović, Biljana, Vulić, Predrag, Krstić, Jugoslav, Roglić, Goran, "Preparation, characterization and photocatalytic activity of lanthanum and vanadium co-doped mesoporous TiO2 for azo-dye degradation" in Journal of Molecular Catalysis A: Chemical, 378 (2013):67-75, https://doi.org/10.1016/j.molcata.2013.05.018 . .