Absorption boost of TiO2 nanotubes by doping with N and sensitization with CdS quantum dots
Само за регистроване кориснике
2017
Аутори
Bjelajac, Anđelika
Đokić, Veljko

Petrović, Rada

Bundaleski, Nenad

Socol, Gabriel

Mihailescu, Ion N.
Rakočević, Zlatko Lj.

Janaćković, Đorđe

Чланак у часопису (Објављена верзија)

Метаподаци
Приказ свих података о документуАпстракт
A process of obtaining N-doped TiO2 nanotubes sensitized by CdS nanoparticles is presented, including detailed characterizations performed along the synthesis. Transparent TiO2 films consisting of nanotubes, 2.5 mu m long and of similar to 60 nm inner diameter, were obtained after anodization of a titanium film deposited onto FTO glass substrate. N-doping was achieved by annealing of TiO2 film in ammonia. X-ray Photoelectron Spectroscopy measurements showed that nitrogen was substitutionally incorporated in the TiO2 matrix, with the N:Ti concentration ratio of 1:100. The doping changed the optical properties of the material in such a way that the absorption edge was shifted from 380 nm to 507 nm, as observed from diffuse reflectance spectra. The influence of the microwave (MW) irradiation on the synthesized CdS quantum dots and their optical properties was investigated. It was shown that the diameter of CdS nanoparticles was increased due to releasing of S-2-ions from dimethyl sulfoxid...e (DMSO) as a consequence of the MW treatment. The (N)TiO2 films were then used as substrates for matrix assisted pulsed laser deposition of the CdS quantum dots with DMSO as a matrix. The laser parameters for the deposition were optimized in order to preserve the nanotubular structure open, the latter being an important feature of this type of photoanode. The structure obtained under optimized conditions has an additional absorption edge shift, reaching 603 nm.
Кључне речи:
MAPLE / Nanocomposites / Optical properties / TiO2Извор:
Ceramics International, 2017, 43, 17, 15040-15046Издавач:
- Elsevier Sci Ltd, Oxford
Финансирање / пројекти:
- Reinforcing of Nanotechnology and Functional Materials Centre (EU-245916)
- UEFISCDI [304/2011]
- Синтеза, развој технологија добијања и примена наноструктурних мултифункционалних материјала дефинисаних својстава (RS-45019)
- Функционални, функционализовани и усавршени нано материјали (RS-45005)
DOI: 10.1016/j.ceramint.2017.08.029
ISSN: 0272-8842
WoS: 000413175300065
Scopus: 2-s2.0-85027146796
Колекције
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Bjelajac, Anđelika AU - Đokić, Veljko AU - Petrović, Rada AU - Bundaleski, Nenad AU - Socol, Gabriel AU - Mihailescu, Ion N. AU - Rakočević, Zlatko Lj. AU - Janaćković, Đorđe PY - 2017 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3631 AB - A process of obtaining N-doped TiO2 nanotubes sensitized by CdS nanoparticles is presented, including detailed characterizations performed along the synthesis. Transparent TiO2 films consisting of nanotubes, 2.5 mu m long and of similar to 60 nm inner diameter, were obtained after anodization of a titanium film deposited onto FTO glass substrate. N-doping was achieved by annealing of TiO2 film in ammonia. X-ray Photoelectron Spectroscopy measurements showed that nitrogen was substitutionally incorporated in the TiO2 matrix, with the N:Ti concentration ratio of 1:100. The doping changed the optical properties of the material in such a way that the absorption edge was shifted from 380 nm to 507 nm, as observed from diffuse reflectance spectra. The influence of the microwave (MW) irradiation on the synthesized CdS quantum dots and their optical properties was investigated. It was shown that the diameter of CdS nanoparticles was increased due to releasing of S-2-ions from dimethyl sulfoxide (DMSO) as a consequence of the MW treatment. The (N)TiO2 films were then used as substrates for matrix assisted pulsed laser deposition of the CdS quantum dots with DMSO as a matrix. The laser parameters for the deposition were optimized in order to preserve the nanotubular structure open, the latter being an important feature of this type of photoanode. The structure obtained under optimized conditions has an additional absorption edge shift, reaching 603 nm. PB - Elsevier Sci Ltd, Oxford T2 - Ceramics International T1 - Absorption boost of TiO2 nanotubes by doping with N and sensitization with CdS quantum dots EP - 15046 IS - 17 SP - 15040 VL - 43 DO - 10.1016/j.ceramint.2017.08.029 ER -
@article{ author = "Bjelajac, Anđelika and Đokić, Veljko and Petrović, Rada and Bundaleski, Nenad and Socol, Gabriel and Mihailescu, Ion N. and Rakočević, Zlatko Lj. and Janaćković, Đorđe", year = "2017", abstract = "A process of obtaining N-doped TiO2 nanotubes sensitized by CdS nanoparticles is presented, including detailed characterizations performed along the synthesis. Transparent TiO2 films consisting of nanotubes, 2.5 mu m long and of similar to 60 nm inner diameter, were obtained after anodization of a titanium film deposited onto FTO glass substrate. N-doping was achieved by annealing of TiO2 film in ammonia. X-ray Photoelectron Spectroscopy measurements showed that nitrogen was substitutionally incorporated in the TiO2 matrix, with the N:Ti concentration ratio of 1:100. The doping changed the optical properties of the material in such a way that the absorption edge was shifted from 380 nm to 507 nm, as observed from diffuse reflectance spectra. The influence of the microwave (MW) irradiation on the synthesized CdS quantum dots and their optical properties was investigated. It was shown that the diameter of CdS nanoparticles was increased due to releasing of S-2-ions from dimethyl sulfoxide (DMSO) as a consequence of the MW treatment. The (N)TiO2 films were then used as substrates for matrix assisted pulsed laser deposition of the CdS quantum dots with DMSO as a matrix. The laser parameters for the deposition were optimized in order to preserve the nanotubular structure open, the latter being an important feature of this type of photoanode. The structure obtained under optimized conditions has an additional absorption edge shift, reaching 603 nm.", publisher = "Elsevier Sci Ltd, Oxford", journal = "Ceramics International", title = "Absorption boost of TiO2 nanotubes by doping with N and sensitization with CdS quantum dots", pages = "15046-15040", number = "17", volume = "43", doi = "10.1016/j.ceramint.2017.08.029" }
Bjelajac, A., Đokić, V., Petrović, R., Bundaleski, N., Socol, G., Mihailescu, I. N., Rakočević, Z. Lj.,& Janaćković, Đ.. (2017). Absorption boost of TiO2 nanotubes by doping with N and sensitization with CdS quantum dots. in Ceramics International Elsevier Sci Ltd, Oxford., 43(17), 15040-15046. https://doi.org/10.1016/j.ceramint.2017.08.029
Bjelajac A, Đokić V, Petrović R, Bundaleski N, Socol G, Mihailescu IN, Rakočević ZL, Janaćković Đ. Absorption boost of TiO2 nanotubes by doping with N and sensitization with CdS quantum dots. in Ceramics International. 2017;43(17):15040-15046. doi:10.1016/j.ceramint.2017.08.029 .
Bjelajac, Anđelika, Đokić, Veljko, Petrović, Rada, Bundaleski, Nenad, Socol, Gabriel, Mihailescu, Ion N., Rakočević, Zlatko Lj., Janaćković, Đorđe, "Absorption boost of TiO2 nanotubes by doping with N and sensitization with CdS quantum dots" in Ceramics International, 43, no. 17 (2017):15040-15046, https://doi.org/10.1016/j.ceramint.2017.08.029 . .