Ex-situ sensitization of ordered TiO2 nanotubes with CdS quantum dots
Нема приказа
Аутори
Bjelajac, AnđelikaPetrović, Rada
Nedeljković, Jovan
Đokić, Veljko R.
Radetić, Tamara
Ćirković, Jovana
Janaćković, Đorđe T.
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Ordered titania nanotubes (pore diameter approximate to 90 nm and wall thickness approximate to 10 nm) were obtained by the anodization technique and used for the ex-situ deposition of cadmium sulfide quantum dots (CdS QDs) via simple immersion of titania substrates in the CdS colloid. The colloidal dispersion of CdS nanoparticles in water was obtained in the presence of the bifunctional ligand, mercapto silane, which binds to the surface of CdS providing stability to the colloid and preventing further growth of the synthesized nanoparticles. The blue-shift of the optical absorption indicated that the CdS nanoparticles were of quantum dot size. Using the effective mass model, the average particle size was calculated to be 5.4 nm. Transmission electron microscopy provided the verification for the estimated size of the nanoparticles, which was followed by performing selected area electron diffraction to determine the mixed phase (cubic and hexagonal) of the synthesized CdS QDs. Scanning ...electron microscopy and reflectance spectroscopy were employed to characterize the nanostructures consisting of TiO2 nanotubes with different loadings of CdS QDs (after 24 h and 72 h immersion). It was demonstrated that mercapto silane efficiently binds CdS QDs onto TiO2 nanotubes enabling Visible-light response of the obtained nanocomposites. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
Кључне речи:
Electron microscopy / Nanocomposites / Optical properties / TiO2Извор:
Ceramics International, 2015, 41, 5, 7048-7053Финансирање / пројекти:
- Синтеза, развој технологија добијања и примена наноструктурних мултифункционалних материјала дефинисаних својстава (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45019)
DOI: 10.1016/j.ceramint.2015.02.010
ISSN: 0272-8842; 1873-3956
WoS: 000353176400051
Scopus: 2-s2.0-84925125540
Колекције
Институција/група
VinčaTY - JOUR AU - Bjelajac, Anđelika AU - Petrović, Rada AU - Nedeljković, Jovan AU - Đokić, Veljko R. AU - Radetić, Tamara AU - Ćirković, Jovana AU - Janaćković, Đorđe T. PY - 2015 UR - https://vinar.vin.bg.ac.rs/handle/123456789/506 AB - Ordered titania nanotubes (pore diameter approximate to 90 nm and wall thickness approximate to 10 nm) were obtained by the anodization technique and used for the ex-situ deposition of cadmium sulfide quantum dots (CdS QDs) via simple immersion of titania substrates in the CdS colloid. The colloidal dispersion of CdS nanoparticles in water was obtained in the presence of the bifunctional ligand, mercapto silane, which binds to the surface of CdS providing stability to the colloid and preventing further growth of the synthesized nanoparticles. The blue-shift of the optical absorption indicated that the CdS nanoparticles were of quantum dot size. Using the effective mass model, the average particle size was calculated to be 5.4 nm. Transmission electron microscopy provided the verification for the estimated size of the nanoparticles, which was followed by performing selected area electron diffraction to determine the mixed phase (cubic and hexagonal) of the synthesized CdS QDs. Scanning electron microscopy and reflectance spectroscopy were employed to characterize the nanostructures consisting of TiO2 nanotubes with different loadings of CdS QDs (after 24 h and 72 h immersion). It was demonstrated that mercapto silane efficiently binds CdS QDs onto TiO2 nanotubes enabling Visible-light response of the obtained nanocomposites. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved. T2 - Ceramics International T1 - Ex-situ sensitization of ordered TiO2 nanotubes with CdS quantum dots VL - 41 IS - 5 SP - 7048 EP - 7053 DO - 10.1016/j.ceramint.2015.02.010 ER -
@article{ author = "Bjelajac, Anđelika and Petrović, Rada and Nedeljković, Jovan and Đokić, Veljko R. and Radetić, Tamara and Ćirković, Jovana and Janaćković, Đorđe T.", year = "2015", abstract = "Ordered titania nanotubes (pore diameter approximate to 90 nm and wall thickness approximate to 10 nm) were obtained by the anodization technique and used for the ex-situ deposition of cadmium sulfide quantum dots (CdS QDs) via simple immersion of titania substrates in the CdS colloid. The colloidal dispersion of CdS nanoparticles in water was obtained in the presence of the bifunctional ligand, mercapto silane, which binds to the surface of CdS providing stability to the colloid and preventing further growth of the synthesized nanoparticles. The blue-shift of the optical absorption indicated that the CdS nanoparticles were of quantum dot size. Using the effective mass model, the average particle size was calculated to be 5.4 nm. Transmission electron microscopy provided the verification for the estimated size of the nanoparticles, which was followed by performing selected area electron diffraction to determine the mixed phase (cubic and hexagonal) of the synthesized CdS QDs. Scanning electron microscopy and reflectance spectroscopy were employed to characterize the nanostructures consisting of TiO2 nanotubes with different loadings of CdS QDs (after 24 h and 72 h immersion). It was demonstrated that mercapto silane efficiently binds CdS QDs onto TiO2 nanotubes enabling Visible-light response of the obtained nanocomposites. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.", journal = "Ceramics International", title = "Ex-situ sensitization of ordered TiO2 nanotubes with CdS quantum dots", volume = "41", number = "5", pages = "7048-7053", doi = "10.1016/j.ceramint.2015.02.010" }
Bjelajac, A., Petrović, R., Nedeljković, J., Đokić, V. R., Radetić, T., Ćirković, J.,& Janaćković, Đ. T.. (2015). Ex-situ sensitization of ordered TiO2 nanotubes with CdS quantum dots. in Ceramics International, 41(5), 7048-7053. https://doi.org/10.1016/j.ceramint.2015.02.010
Bjelajac A, Petrović R, Nedeljković J, Đokić VR, Radetić T, Ćirković J, Janaćković ĐT. Ex-situ sensitization of ordered TiO2 nanotubes with CdS quantum dots. in Ceramics International. 2015;41(5):7048-7053. doi:10.1016/j.ceramint.2015.02.010 .
Bjelajac, Anđelika, Petrović, Rada, Nedeljković, Jovan, Đokić, Veljko R., Radetić, Tamara, Ćirković, Jovana, Janaćković, Đorđe T., "Ex-situ sensitization of ordered TiO2 nanotubes with CdS quantum dots" in Ceramics International, 41, no. 5 (2015):7048-7053, https://doi.org/10.1016/j.ceramint.2015.02.010 . .