Surface modification of submicronic TiO2 particles prepared by ultrasonic spray pyrolysis for visible light absorption
Нема приказа
Аутори
Dugandžić, IvanJovanović, Dragana J.
Mančić, Lidija
Zheng, Nan
Ahrenkiel, Scott Phillip
Milošević, Olivera
Šaponjić, Zoran
Nedeljković, Jovan
Чланак у часопису
Метаподаци
Приказ свих података о документуАпстракт
Spherical, submicronic TiO2 assemblage with high specific surface area and controllable phase composition was prepared in the process of ultrasonic spray drying/pyrolysis in a wide temperature range (150-800 degrees C) by using as a precursor aqueous colloidal solution consisting of TiO2 nanoparticles (4.5 nm). Submicronic, soft and grained spherical TiO2 particles (d = 370-500 nm) comprising clustered nanocrystals ( LT 10 nm) were obtained at low processing temperature, while particle densification, intensive growth of the clustered primary units and anatase-to-rutile transformation (similar to 30 wt%) were observed at the higher temperatures. Detailed structural and morphological characterisation were performed by X-ray powder diffraction, scanning and field emission electron microscopy, transmission electron microscopy, and laser particle size analysis. Moreover, the surface modification of TiO2 particles through the formation of charge-transfer (CT) complex was achieved with differ...ent ligands: ascorbic acid, dopamine, catechol, 2,3-dihydroxynaphthalene, and anthrarobin. Optical properties of the surface-modified TiO2 particles were studied by using diffuse reflection spectroscopy. The binding structure between the surface titanium atoms and different ligands was determined by using Fourier transform infrared spectroscopy. The formation of CT complexes induced significant red shift of optical absorption in comparison to unmodified TiO2 particles.
Кључне речи:
TiO2 nanoparticles / Spray drying/pyrolysis / Surface modification / Charge-transfer complex / Optical propertiesИзвор:
Journal of Nanoparticle Research, 2012, 14, 10Финансирање / пројекти:
- Материјали редуковане димензионалности за ефикасну апсорпцију светлости и конверзију енергије (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45020)
DOI: 10.1007/s11051-012-1157-1
ISSN: 1388-0764
WoS: 000309341200021
Scopus: 2-s2.0-84865569378
Колекције
Институција/група
VinčaTY - JOUR AU - Dugandžić, Ivan AU - Jovanović, Dragana J. AU - Mančić, Lidija AU - Zheng, Nan AU - Ahrenkiel, Scott Phillip AU - Milošević, Olivera AU - Šaponjić, Zoran AU - Nedeljković, Jovan PY - 2012 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5060 AB - Spherical, submicronic TiO2 assemblage with high specific surface area and controllable phase composition was prepared in the process of ultrasonic spray drying/pyrolysis in a wide temperature range (150-800 degrees C) by using as a precursor aqueous colloidal solution consisting of TiO2 nanoparticles (4.5 nm). Submicronic, soft and grained spherical TiO2 particles (d = 370-500 nm) comprising clustered nanocrystals ( LT 10 nm) were obtained at low processing temperature, while particle densification, intensive growth of the clustered primary units and anatase-to-rutile transformation (similar to 30 wt%) were observed at the higher temperatures. Detailed structural and morphological characterisation were performed by X-ray powder diffraction, scanning and field emission electron microscopy, transmission electron microscopy, and laser particle size analysis. Moreover, the surface modification of TiO2 particles through the formation of charge-transfer (CT) complex was achieved with different ligands: ascorbic acid, dopamine, catechol, 2,3-dihydroxynaphthalene, and anthrarobin. Optical properties of the surface-modified TiO2 particles were studied by using diffuse reflection spectroscopy. The binding structure between the surface titanium atoms and different ligands was determined by using Fourier transform infrared spectroscopy. The formation of CT complexes induced significant red shift of optical absorption in comparison to unmodified TiO2 particles. T2 - Journal of Nanoparticle Research T1 - Surface modification of submicronic TiO2 particles prepared by ultrasonic spray pyrolysis for visible light absorption VL - 14 IS - 10 DO - 10.1007/s11051-012-1157-1 ER -
@article{ author = "Dugandžić, Ivan and Jovanović, Dragana J. and Mančić, Lidija and Zheng, Nan and Ahrenkiel, Scott Phillip and Milošević, Olivera and Šaponjić, Zoran and Nedeljković, Jovan", year = "2012", abstract = "Spherical, submicronic TiO2 assemblage with high specific surface area and controllable phase composition was prepared in the process of ultrasonic spray drying/pyrolysis in a wide temperature range (150-800 degrees C) by using as a precursor aqueous colloidal solution consisting of TiO2 nanoparticles (4.5 nm). Submicronic, soft and grained spherical TiO2 particles (d = 370-500 nm) comprising clustered nanocrystals ( LT 10 nm) were obtained at low processing temperature, while particle densification, intensive growth of the clustered primary units and anatase-to-rutile transformation (similar to 30 wt%) were observed at the higher temperatures. Detailed structural and morphological characterisation were performed by X-ray powder diffraction, scanning and field emission electron microscopy, transmission electron microscopy, and laser particle size analysis. Moreover, the surface modification of TiO2 particles through the formation of charge-transfer (CT) complex was achieved with different ligands: ascorbic acid, dopamine, catechol, 2,3-dihydroxynaphthalene, and anthrarobin. Optical properties of the surface-modified TiO2 particles were studied by using diffuse reflection spectroscopy. The binding structure between the surface titanium atoms and different ligands was determined by using Fourier transform infrared spectroscopy. The formation of CT complexes induced significant red shift of optical absorption in comparison to unmodified TiO2 particles.", journal = "Journal of Nanoparticle Research", title = "Surface modification of submicronic TiO2 particles prepared by ultrasonic spray pyrolysis for visible light absorption", volume = "14", number = "10", doi = "10.1007/s11051-012-1157-1" }
Dugandžić, I., Jovanović, D. J., Mančić, L., Zheng, N., Ahrenkiel, S. P., Milošević, O., Šaponjić, Z.,& Nedeljković, J.. (2012). Surface modification of submicronic TiO2 particles prepared by ultrasonic spray pyrolysis for visible light absorption. in Journal of Nanoparticle Research, 14(10). https://doi.org/10.1007/s11051-012-1157-1
Dugandžić I, Jovanović DJ, Mančić L, Zheng N, Ahrenkiel SP, Milošević O, Šaponjić Z, Nedeljković J. Surface modification of submicronic TiO2 particles prepared by ultrasonic spray pyrolysis for visible light absorption. in Journal of Nanoparticle Research. 2012;14(10). doi:10.1007/s11051-012-1157-1 .
Dugandžić, Ivan, Jovanović, Dragana J., Mančić, Lidija, Zheng, Nan, Ahrenkiel, Scott Phillip, Milošević, Olivera, Šaponjić, Zoran, Nedeljković, Jovan, "Surface modification of submicronic TiO2 particles prepared by ultrasonic spray pyrolysis for visible light absorption" in Journal of Nanoparticle Research, 14, no. 10 (2012), https://doi.org/10.1007/s11051-012-1157-1 . .