Synthesis and comparison of the photocatalytic activities of flame spray pyrolysis and sol-gel derived magnesium oxide nano-scale particles

被引：56
作者：
Demirci, S. [1 ,2 ]
Ozturk, B. [1 ,2 ]
Yildirim, S. [1 ,2 ]
Bakal, F. [1 ,2 ]
Erol, M. [3 ]
Sancakoglu, O. [2 ]
Yigit, R. [4 ,5 ]
Celik, E. [2 ,4 ,5 ]
Batar, T. [6 ]
机构：
[1] Dokuz Eylul Univ, Grad Sch Nat & Appl Sci, TR-35160 Izmir, Turkey
[2] Dokuz Eylul Univ, Dept Met & Mat Engn, TR-35160 Izmir, Turkey
[3] Katip Celebi Univ, Dept Met & Mat Engn, TR-35620 Izmir, Turkey
[4] Dokuz Eylul Univ, Ctr Fabricat & Appl Elect Mat EMUM, TR-35160 Izmir, Turkey
[5] Dokuz Eylul Univ, Dept Nanosci & Nanoengn, TR-35160 Izmir, Turkey
[6] Gediz Univ, Dept Mech Engn, TR-35665 Izmir, Turkey
来源：
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING | 2015年 / 34卷
关键词：
Magnesium oxide; Flame spray pyrolysis; Sol-gel process; Photocatalysis; Methylene blue; MGO NANOPARTICLES; TIO2; DEGRADATION; SIZE;
D O I：
10.1016/j.mssp.2015.02.029
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：154 / 161
页数：8
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