Ultrasonic spray pyrolysis of surface modified TiO2 nanoparticles with dopamine
Само за регистроване кориснике
2013
Аутори
Dugandžić, IvanJovanović, Dragana J.
Mančić, Lidija
Milošević, Olivera
Ahrenkiel, Scott P.
Šaponjić, Zoran
Nedeljković, Jovan
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Spherical, submicronic TiO2 powder particles were prepared in the low temperature process of ultrasonic spray pyrolysis (150 °C) by using as a precursor aqueous colloidal solutions consisting of surface modified 45 Å TiO2 nanoparticles with dopamine. Detailed structural and morphological characterization of colored submicronic TiO2 spheres was performed by X-ray powder diffraction (XRPD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), laser particle size analysis and FTIR techniques. Also, optical characterization of both dopamine-modified TiO2 precursor nanoparticles and submicronic TiO2 powder particles was performed using absorption and diffuse reflectance spectroscopy, respectively. A significant decrease of the effective band gap (1.9 eV) in dopamine-modified TiO2 nanoparticles compared to the band gap of bulk material (3.2 eV) was preserved after formation of submicronic TiO2 powder particles in the process of ultrasonic spray pyrolysis under mild exp...erimental conditions. Due to the nanostructured nature, surface-modified assemblage of TiO2 nanoparticles preserved unique ability to absorb light through charge transfer complex by photoexcitation of the ligand-to-TiO2 band, conventionally associated with extremely small TiO2 nanoparticles (d < 20 nm) whose surface Ti atoms, owing to the large curvature, have penta-coordinate geometry.
Кључне речи:
electron microscopy (STEM, TEM and SEM) / Fourier transform infrared spectroscopy / FTIR / ultrasonic techniques / TiO2Извор:
Materials Chemistry and Physics, 2013, 143, 1, 233-239Финансирање / пројекти:
- Материјали редуковане димензионалности за ефикасну апсорпцију светлости и конверзију енергије (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45020)
- Утицај величине, облика и структуре наночестица на њихова својства и својства нанокомпозита (RS-MESTD-Basic Research (BR or ON)-172056)
DOI: 10.1016/j.matchemphys.2013.08.058
ISSN: 0254-0584
WoS: 000327684100032
Scopus: 2-s2.0-84886722576
Институција/група
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - JOUR AU - Dugandžić, Ivan AU - Jovanović, Dragana J. AU - Mančić, Lidija AU - Milošević, Olivera AU - Ahrenkiel, Scott P. AU - Šaponjić, Zoran AU - Nedeljković, Jovan PY - 2013 UR - https://dais.sanu.ac.rs/123456789/344 AB - Spherical, submicronic TiO2 powder particles were prepared in the low temperature process of ultrasonic spray pyrolysis (150 °C) by using as a precursor aqueous colloidal solutions consisting of surface modified 45 Å TiO2 nanoparticles with dopamine. Detailed structural and morphological characterization of colored submicronic TiO2 spheres was performed by X-ray powder diffraction (XRPD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), laser particle size analysis and FTIR techniques. Also, optical characterization of both dopamine-modified TiO2 precursor nanoparticles and submicronic TiO2 powder particles was performed using absorption and diffuse reflectance spectroscopy, respectively. A significant decrease of the effective band gap (1.9 eV) in dopamine-modified TiO2 nanoparticles compared to the band gap of bulk material (3.2 eV) was preserved after formation of submicronic TiO2 powder particles in the process of ultrasonic spray pyrolysis under mild experimental conditions. Due to the nanostructured nature, surface-modified assemblage of TiO2 nanoparticles preserved unique ability to absorb light through charge transfer complex by photoexcitation of the ligand-to-TiO2 band, conventionally associated with extremely small TiO2 nanoparticles (d < 20 nm) whose surface Ti atoms, owing to the large curvature, have penta-coordinate geometry. T2 - Materials Chemistry and Physics T1 - Ultrasonic spray pyrolysis of surface modified TiO2 nanoparticles with dopamine SP - 233 EP - 239 VL - 143 IS - 1 DO - 10.1016/j.matchemphys.2013.08.058 UR - https://hdl.handle.net/21.15107/rcub_dais_344 ER -
@article{ author = "Dugandžić, Ivan and Jovanović, Dragana J. and Mančić, Lidija and Milošević, Olivera and Ahrenkiel, Scott P. and Šaponjić, Zoran and Nedeljković, Jovan", year = "2013", abstract = "Spherical, submicronic TiO2 powder particles were prepared in the low temperature process of ultrasonic spray pyrolysis (150 °C) by using as a precursor aqueous colloidal solutions consisting of surface modified 45 Å TiO2 nanoparticles with dopamine. Detailed structural and morphological characterization of colored submicronic TiO2 spheres was performed by X-ray powder diffraction (XRPD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), laser particle size analysis and FTIR techniques. Also, optical characterization of both dopamine-modified TiO2 precursor nanoparticles and submicronic TiO2 powder particles was performed using absorption and diffuse reflectance spectroscopy, respectively. A significant decrease of the effective band gap (1.9 eV) in dopamine-modified TiO2 nanoparticles compared to the band gap of bulk material (3.2 eV) was preserved after formation of submicronic TiO2 powder particles in the process of ultrasonic spray pyrolysis under mild experimental conditions. Due to the nanostructured nature, surface-modified assemblage of TiO2 nanoparticles preserved unique ability to absorb light through charge transfer complex by photoexcitation of the ligand-to-TiO2 band, conventionally associated with extremely small TiO2 nanoparticles (d < 20 nm) whose surface Ti atoms, owing to the large curvature, have penta-coordinate geometry.", journal = "Materials Chemistry and Physics", title = "Ultrasonic spray pyrolysis of surface modified TiO2 nanoparticles with dopamine", pages = "233-239", volume = "143", number = "1", doi = "10.1016/j.matchemphys.2013.08.058", url = "https://hdl.handle.net/21.15107/rcub_dais_344" }
Dugandžić, I., Jovanović, D. J., Mančić, L., Milošević, O., Ahrenkiel, S. P., Šaponjić, Z.,& Nedeljković, J.. (2013). Ultrasonic spray pyrolysis of surface modified TiO2 nanoparticles with dopamine. in Materials Chemistry and Physics, 143(1), 233-239. https://doi.org/10.1016/j.matchemphys.2013.08.058 https://hdl.handle.net/21.15107/rcub_dais_344
Dugandžić I, Jovanović DJ, Mančić L, Milošević O, Ahrenkiel SP, Šaponjić Z, Nedeljković J. Ultrasonic spray pyrolysis of surface modified TiO2 nanoparticles with dopamine. in Materials Chemistry and Physics. 2013;143(1):233-239. doi:10.1016/j.matchemphys.2013.08.058 https://hdl.handle.net/21.15107/rcub_dais_344 .
Dugandžić, Ivan, Jovanović, Dragana J., Mančić, Lidija, Milošević, Olivera, Ahrenkiel, Scott P., Šaponjić, Zoran, Nedeljković, Jovan, "Ultrasonic spray pyrolysis of surface modified TiO2 nanoparticles with dopamine" in Materials Chemistry and Physics, 143, no. 1 (2013):233-239, https://doi.org/10.1016/j.matchemphys.2013.08.058 ., https://hdl.handle.net/21.15107/rcub_dais_344 .