Surface modification of submicronic TiO2 particles prepared by ultrasonic spray pyrolysis for visible light absorption
Authorized Users Only
2012
Authors
Dugandžić, IvanJovanović, Dragana J.
Mančić, Lidija
Zheng, Nan
Ahrenkiel, Scott P.
Milošević, Olivera
Šaponjić, Zoran
Nedeljković, Jovan
Article (Published version)
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Show full item recordAbstract
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 °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 (<10 nm) were obtained at low processing temperature, while particle densification, intensive growth of the clustered primary units and anatase-to-rutile transformation (~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: ascorbi...c 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.
Keywords:
TiO2 nanoparticles / spray drying and pyrolysis / surface modification / charge-transfer complex / optical propertiesSource:
Journal of Nanoparticle Research, 2012, 14, 1157-Publisher:
- Amsterdam : Springer Netherlands
Funding / projects:
- Materials of Reduced Dimensions for Efficient Light Harvesting and Energy conversion (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45020)
DOI: 10.1007/s11051-012-1157-1
ISSN: 1388-0764 (Print); 1572-896X
WoS: 000309341200021
Scopus: 2-s2.0-84865569378
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - JOUR AU - Dugandžić, Ivan AU - Jovanović, Dragana J. AU - Mančić, Lidija AU - Zheng, Nan AU - Ahrenkiel, Scott P. AU - Milošević, Olivera AU - Šaponjić, Zoran AU - Nedeljković, Jovan PY - 2012 UR - https://dais.sanu.ac.rs/123456789/464 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 °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 (<10 nm) were obtained at low processing temperature, while particle densification, intensive growth of the clustered primary units and anatase-to-rutile transformation (~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. PB - Amsterdam : Springer Netherlands T2 - Journal of Nanoparticle Research T1 - Surface modification of submicronic TiO2 particles prepared by ultrasonic spray pyrolysis for visible light absorption SP - 1157 VL - 14 DO - 10.1007/s11051-012-1157-1 UR - https://hdl.handle.net/21.15107/rcub_dais_464 ER -
@article{ author = "Dugandžić, Ivan and Jovanović, Dragana J. and Mančić, Lidija and Zheng, Nan and Ahrenkiel, Scott P. 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 °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 (<10 nm) were obtained at low processing temperature, while particle densification, intensive growth of the clustered primary units and anatase-to-rutile transformation (~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.", publisher = "Amsterdam : Springer Netherlands", journal = "Journal of Nanoparticle Research", title = "Surface modification of submicronic TiO2 particles prepared by ultrasonic spray pyrolysis for visible light absorption", pages = "1157", volume = "14", doi = "10.1007/s11051-012-1157-1", url = "https://hdl.handle.net/21.15107/rcub_dais_464" }
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 Amsterdam : Springer Netherlands., 14, 1157. https://doi.org/10.1007/s11051-012-1157-1 https://hdl.handle.net/21.15107/rcub_dais_464
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;14:1157. doi:10.1007/s11051-012-1157-1 https://hdl.handle.net/21.15107/rcub_dais_464 .
Dugandžić, Ivan, Jovanović, Dragana J., Mančić, Lidija, Zheng, Nan, Ahrenkiel, Scott P., 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 (2012):1157, https://doi.org/10.1007/s11051-012-1157-1 ., https://hdl.handle.net/21.15107/rcub_dais_464 .