Photodegradation of an azo pyridone dye using TiO2 films prepared by the spray pyrolysis method
Само за регистроване кориснике
2012
Аутори
Dostanić, JasminaGrbić, Boško
Radić, Nenad
Stefanov, Plamen
Šaponjić, Zoran
Buha, Jelena
Mijin, Dušan
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
In this study, the feasibility of preparing porous TiO2 films on a stainless steel substrate from a hydrothermally prepared colloidal TiO2 solution by the spray pyrolysis technique is presented. The prepared samples were annealed at different temperatures and characterized by the XPS, XRD and SEM techniques, porosimetry and specific surface area measurements. The photocatalytic activities of the resulting films were evaluated by measuring the degradation of an azo pyridone dye, used as model pollutant, under simulated sunlight conditions. The relationships between the structural and morphological characteristics of the TiO2 films and their photoactivity were observed. It was found that the photoactivity was markedly dependent on the annealing temperature. On increasing the calcination temperature from 500 degrees C to 700 degrees C, the crystallite size and the rutile content increased, whereas the specific surface area and the rate of photodegradation decreased. Calcination at 700 deg...rees C resulted in a completely loss of photoactivity, due to the partial transformation of anatase to rutile phase, the increased crystallite size and decreased specific surface area. Specific activity (per unit of mass and per unit of surface area) was lowered within thicker films, pointing out significance of transport phenomena through porous films (the transport of dye and the transmittance of light as immaterial reagent). Based on the obtained results, the spray pyrolysis method appears to be a good choice for the preparation of photocatalytically active TiO2 films for the removal of dye pollutants.
Кључне речи:
TiO2 films / Stainless steel / Spray pyrolysis / Photocatalysis / Azo pyridone dyeИзвор:
Chemical Engineering Journal, 2012, 180, 57-65Издавач:
- Elsevier Science Sa, Lausanne
Финансирање / пројекти:
- Развој ефикаснијих хемијско-инжењерских процеса заснован на истраживањима феномена преноса и принципима интензификације процеса (RS-172022)
- Хемијско и структурно дизајнирање наноматеријала за примену у медицини и инжењерству ткива (RS-172026)
- Наноструктурни функционални и композитни материјали у каталитичким и сорпционим процесима (RS-45001)
DOI: 10.1016/j.cej.2011.10.100
ISSN: 1385-8947
WoS: 000300475900008
Scopus: 2-s2.0-84455208127
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Dostanić, Jasmina AU - Grbić, Boško AU - Radić, Nenad AU - Stefanov, Plamen AU - Šaponjić, Zoran AU - Buha, Jelena AU - Mijin, Dušan PY - 2012 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2240 AB - In this study, the feasibility of preparing porous TiO2 films on a stainless steel substrate from a hydrothermally prepared colloidal TiO2 solution by the spray pyrolysis technique is presented. The prepared samples were annealed at different temperatures and characterized by the XPS, XRD and SEM techniques, porosimetry and specific surface area measurements. The photocatalytic activities of the resulting films were evaluated by measuring the degradation of an azo pyridone dye, used as model pollutant, under simulated sunlight conditions. The relationships between the structural and morphological characteristics of the TiO2 films and their photoactivity were observed. It was found that the photoactivity was markedly dependent on the annealing temperature. On increasing the calcination temperature from 500 degrees C to 700 degrees C, the crystallite size and the rutile content increased, whereas the specific surface area and the rate of photodegradation decreased. Calcination at 700 degrees C resulted in a completely loss of photoactivity, due to the partial transformation of anatase to rutile phase, the increased crystallite size and decreased specific surface area. Specific activity (per unit of mass and per unit of surface area) was lowered within thicker films, pointing out significance of transport phenomena through porous films (the transport of dye and the transmittance of light as immaterial reagent). Based on the obtained results, the spray pyrolysis method appears to be a good choice for the preparation of photocatalytically active TiO2 films for the removal of dye pollutants. PB - Elsevier Science Sa, Lausanne T2 - Chemical Engineering Journal T1 - Photodegradation of an azo pyridone dye using TiO2 films prepared by the spray pyrolysis method EP - 65 SP - 57 VL - 180 DO - 10.1016/j.cej.2011.10.100 ER -
@article{ author = "Dostanić, Jasmina and Grbić, Boško and Radić, Nenad and Stefanov, Plamen and Šaponjić, Zoran and Buha, Jelena and Mijin, Dušan", year = "2012", abstract = "In this study, the feasibility of preparing porous TiO2 films on a stainless steel substrate from a hydrothermally prepared colloidal TiO2 solution by the spray pyrolysis technique is presented. The prepared samples were annealed at different temperatures and characterized by the XPS, XRD and SEM techniques, porosimetry and specific surface area measurements. The photocatalytic activities of the resulting films were evaluated by measuring the degradation of an azo pyridone dye, used as model pollutant, under simulated sunlight conditions. The relationships between the structural and morphological characteristics of the TiO2 films and their photoactivity were observed. It was found that the photoactivity was markedly dependent on the annealing temperature. On increasing the calcination temperature from 500 degrees C to 700 degrees C, the crystallite size and the rutile content increased, whereas the specific surface area and the rate of photodegradation decreased. Calcination at 700 degrees C resulted in a completely loss of photoactivity, due to the partial transformation of anatase to rutile phase, the increased crystallite size and decreased specific surface area. Specific activity (per unit of mass and per unit of surface area) was lowered within thicker films, pointing out significance of transport phenomena through porous films (the transport of dye and the transmittance of light as immaterial reagent). Based on the obtained results, the spray pyrolysis method appears to be a good choice for the preparation of photocatalytically active TiO2 films for the removal of dye pollutants.", publisher = "Elsevier Science Sa, Lausanne", journal = "Chemical Engineering Journal", title = "Photodegradation of an azo pyridone dye using TiO2 films prepared by the spray pyrolysis method", pages = "65-57", volume = "180", doi = "10.1016/j.cej.2011.10.100" }
Dostanić, J., Grbić, B., Radić, N., Stefanov, P., Šaponjić, Z., Buha, J.,& Mijin, D.. (2012). Photodegradation of an azo pyridone dye using TiO2 films prepared by the spray pyrolysis method. in Chemical Engineering Journal Elsevier Science Sa, Lausanne., 180, 57-65. https://doi.org/10.1016/j.cej.2011.10.100
Dostanić J, Grbić B, Radić N, Stefanov P, Šaponjić Z, Buha J, Mijin D. Photodegradation of an azo pyridone dye using TiO2 films prepared by the spray pyrolysis method. in Chemical Engineering Journal. 2012;180:57-65. doi:10.1016/j.cej.2011.10.100 .
Dostanić, Jasmina, Grbić, Boško, Radić, Nenad, Stefanov, Plamen, Šaponjić, Zoran, Buha, Jelena, Mijin, Dušan, "Photodegradation of an azo pyridone dye using TiO2 films prepared by the spray pyrolysis method" in Chemical Engineering Journal, 180 (2012):57-65, https://doi.org/10.1016/j.cej.2011.10.100 . .