TY - JOUR
T1 - Synthesis and comparison of the photocatalytic activities of flame spray pyrolysis and sol-gel derived magnesium oxide nano-scale particles
AU - Demirci, S.
AU - Öztürk, B.
AU - Yildirim, S.
AU - Bakal, F.
AU - Erol, M.
AU - Sancakoʇlu, O.
AU - Yigit, R.
AU - Celik, E.
AU - Batar, T.
N1 - Publisher Copyright:
© 2015 Elsevier Ltd. All rights reserved.
PY - 2015/6/1
Y1 - 2015/6/1
N2 - In this study, nano-scale magnesium oxide particles were synthesized by means of flame spray pyrolysis and sol-gel techniques. Phase structures, morphologies, particle size, specific surface area and optical band gap were determined using an X-ray diffractometer (XRD), scanning electron microscope (SEM), particle size analyzer, Brunauer-Emmett-Teller (BET) specific surface area analyzer and UV diffused reflectance spectroscopy (UV DRS), respectively. In order to determine photocatalytic activity of the nano-scale particles, aqueous methylene blue (MB) solutions were employed. The photocatalytical degradation rates of MB solutions were determined through absorbance measurements performed via UV-vis spectrophotometer. Fourier transform infrared spectroscopy (FTIR) studies confirmed the formation -OH hydroxyl and other groups provide by MB solutions, after photocatalytic studies. It was found that both flame spray pyrolysis and sol-gel synthesized MgO nano-scale particles exhibited appreciable photocatalytic activity for the degradation of MB dye under UV light irradiation with small differences. Moreover, the effects of particle size and surface area on the photocatalytic properties were investigated in detail.
AB - In this study, nano-scale magnesium oxide particles were synthesized by means of flame spray pyrolysis and sol-gel techniques. Phase structures, morphologies, particle size, specific surface area and optical band gap were determined using an X-ray diffractometer (XRD), scanning electron microscope (SEM), particle size analyzer, Brunauer-Emmett-Teller (BET) specific surface area analyzer and UV diffused reflectance spectroscopy (UV DRS), respectively. In order to determine photocatalytic activity of the nano-scale particles, aqueous methylene blue (MB) solutions were employed. The photocatalytical degradation rates of MB solutions were determined through absorbance measurements performed via UV-vis spectrophotometer. Fourier transform infrared spectroscopy (FTIR) studies confirmed the formation -OH hydroxyl and other groups provide by MB solutions, after photocatalytic studies. It was found that both flame spray pyrolysis and sol-gel synthesized MgO nano-scale particles exhibited appreciable photocatalytic activity for the degradation of MB dye under UV light irradiation with small differences. Moreover, the effects of particle size and surface area on the photocatalytic properties were investigated in detail.
KW - Flame spray pyrolysis
KW - Magnesium oxide
KW - Methylene blue
KW - Photocatalysis
KW - Sol-gel process
UR - http://www.scopus.com/inward/record.url?scp=84929298469&partnerID=8YFLogxK
U2 - 10.1016/j.mssp.2015.02.029
DO - 10.1016/j.mssp.2015.02.029
M3 - Article
AN - SCOPUS:84929298469
SN - 1369-8001
VL - 34
SP - 154
EP - 161
JO - Materials Science in Semiconductor Processing
JF - Materials Science in Semiconductor Processing
ER -