Ravanbakhsh, Arsalan, Rashchi, Fereshteh, Heydarzadeh sohi, Mahmoud, Khayyam Nekouei, Rasoul, Mortazavi Samarin, Mohammadreza. (1397). Synthesis and characterization of porous zinc oxide nano-flakes film in alkaline media. , 51(1), 32-42. doi: 10.22059/jufgnsm.2018.01.05
Arsalan Ravanbakhsh; Fereshteh Rashchi; Mahmoud Heydarzadeh sohi; Rasoul Khayyam Nekouei; Mohammadreza Mortazavi Samarin. "Synthesis and characterization of porous zinc oxide nano-flakes film in alkaline media". , 51, 1, 1397, 32-42. doi: 10.22059/jufgnsm.2018.01.05
Ravanbakhsh, Arsalan, Rashchi, Fereshteh, Heydarzadeh sohi, Mahmoud, Khayyam Nekouei, Rasoul, Mortazavi Samarin, Mohammadreza. (1397). 'Synthesis and characterization of porous zinc oxide nano-flakes film in alkaline media', , 51(1), pp. 32-42. doi: 10.22059/jufgnsm.2018.01.05
Ravanbakhsh, Arsalan, Rashchi, Fereshteh, Heydarzadeh sohi, Mahmoud, Khayyam Nekouei, Rasoul, Mortazavi Samarin, Mohammadreza. Synthesis and characterization of porous zinc oxide nano-flakes film in alkaline media. , 1397; 51(1): 32-42. doi: 10.22059/jufgnsm.2018.01.05

Synthesis and characterization of porous zinc oxide nano-flakes film in alkaline media

Journal of Ultrafine Grained and Nanostructured Materials
مقاله 4، دوره 51، شماره 1، شهریور 2018، صفحه 32-42    اصل مقاله (1.8 M)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22059/jufgnsm.2018.01.05
نویسندگان
Arsalan Ravanbakhsh1؛ Fereshteh Rashchi* 1؛ Mahmoud Heydarzadeh sohi1؛ Rasoul Khayyam Nekouei2؛ Mohammadreza Mortazavi Samarin1
1School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran, Iran
2School of Materials Science & Engineering, University of New South Wales (UNSW), Sydney, NSW, Australia
چکیده
In this study, porous zinc oxide nano-flakes were successfully synthesized by anodization method on zinc substrate in a 0.025 M NaOH and 0.05 M NH4Cl solution with the voltage of 10 V at room temperature. The field emission scanning electron microscopy’s (FESEM) images show the structural evolution during 90 min of the anodization process. They also demonstrate the dependency of growth of ZnO flakes on the grains of the zinc substrate. Regarding FESEM images and possible chemical reactions taking place during the anodization process, a growth mechanism and sequences for the formation of ZnO have proposed. The Pourbaix diagram also confirmed this possible mechanism. The elemental  and phase analysis conducted on films proved the formation of the ZnO after the anodization process. The cyclic voltammetry showed the oxidation of zinc into zinc oxide is related to the -1.28 V peak and the peak of zinc oxide reduction is situated at -1.48 V.  The band gap of anodized zinc foil was calculated to be 3.24 eV. The photocatalytic activity of synthesized thin films also was studied and the ImageJ software analysis showed a strong correlation between the photocatalytic activity and the portion of porosity in the synthesized films.
کلیدواژه‌ها
Porous Oxide؛ Anodization؛ Electrochemical Synthesis؛ Photocatalytic Activity؛ Band Gap
مراجع
آمار
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