کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8044071 | 1518915 | 2018 | 31 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Physical investigations and photocatalytic activities on ZnO and SnO2 thin films deposited on flexible polymer substrate
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
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چکیده انگلیسی
ZnO and SnO2 thin films were deposited on glass and Polyetherimide (PEI) flexible substrates by spray pyrolysis deposition at low temperature (250â¯Â°C). The structural characterization by X-ray diffraction (XRD) reveals that PEI promotes the crystallization of ZnO and SnO2 thin films while the films deposited on glass substrate are amorphous. The physical investigations show that ZnO/PEI and SnO2/PEI have a good crystalline quality and high transparency in visible range (T>80%). Their gap energies are calculated from absorbance data (3.3â¯eV for ZnO and 3.72â¯eV for SnO2). Furthermore, the surface properties are investigated by atomic force microscopy and contact angle measurements. It is found that the ZnO/PEI film has a higher surface roughness (RMSâ¯=â¯20.20â¯nmâ¯Â±â¯0.62â¯nm) compared to SnO2/PEI (RMSâ¯=â¯5.41â¯nmâ¯Â±â¯0.16â¯nm). The metal oxides (ZnO and SnO2) catalysts exhibit excellent photodegradation activities under UV irradiation up to 80%. The highest activity was observed for ZnO thin films because it exhibits smaller gap energy. Furthermore, both samples show excellent photocatalytic stability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vacuum - Volume 155, September 2018, Pages 546-552
Journal: Vacuum - Volume 155, September 2018, Pages 546-552
نویسندگان
S. Ben Ameur, H. Bel hadjltaief, A. Barhoumi, B. Duponchel, G. Leroy, M. Amlouk, H. Guermazi,