Synthesis of β-Bi2O3 towards the application of photocatalytic degradation of methyl orange and its instability

被引：42
|
作者：
Iyyapushpam, S. [1 ]
Nishanthi, S. T. [1 ]
Padiyan, D. Pathinettam [1 ]
机构：
[1] Manonmaniam Sundaranar Univ, Dept Phys, Tirunelveli 627012, Tamil Nadu, India
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2015年 / 81卷
关键词：
Oxides; Chemical synthesis; X-ray diffraction; Crystal structure; Optical properties; ORGANIC-DYES; HETEROJUNCTIONS; MICROSPHERES;
D O I：
10.1016/j.jpcs.2015.02.005
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Bismuth oxide carbonate was synthesized from bismuth nitrate and potassium carbonate and then converted to phase pure beta-Bi2O3 form by means of thermal decomposition. X-ray diffraction, HR-SEM, diffuse reflectance UV-vis and photocatalytic degradation studies were carried out on both the samples. Bi2O2CO3 exhibited a wide band gap of 3.406(5) eV while beta-Bi2O3 had a lesser band gap of 2.589(3) eV. beta-Bi2O3 degrades a higher amount of methyl orange because of its lesser band gap and its optimum loading was 0.1 g in 50 ml of 10 ppm solution. After photocatalytic degradation Bi2O2CO3 remains in the stable form whereas beta-Bi2O3 changes to Bi2O2CO3. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：74 / 78
页数：5
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