Band gap narrowing and photocatalytic studies of Nd3+ ion-doped SnO2 nanoparticles using solar energy
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- 作者：DHANYA CHANDRAN ; LAKSHMI S NAIR ; S BALACHANDRAN…
- 关键词：Band gap narrowing ; photocatalytic activity ; sol–gel process ; tin oxide.
- 刊名：Bulletin of Materials Science
- 出版年：2016
- 出版时间：February 2016
- 年：2016
- 卷：39
- 期：1
- 页码：27-33
- 全文大小：1,465 KB
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LAKSHMI S NAIR (1)
S BALACHANDRAN (2)
K RAJENDRA BABU (1)
M DEEPA (3)
1. Department of Physics, Mahatma Gandhi College, Kerala University, Pattom Palace P.O., Thiruvananthapuram, 695 004, India
2. Department of Chemistry, Mahatma Gandhi College, Kerala University, Pattom Palace P.O., Thiruvananthapuram, 695 004, India
3. Department of Physics, All Saints’ College, Kerala University, Chackai P.O., Thiruvananthapuram, 695 007, India - 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Materials Science
Engineering, general - 出版者：Springer India
- ISSN：0973-7669
文摘
Pure and Nd3+-doped tin oxide (SnO2) nanoparticles have been prepared by the sol–gel method and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution TEM, energy-dispersive spectroscopy and UV–visible spectroscopy. The XRD patterns of all the samples are identified as tetragonal rutile-type SnO2 phase which is further confirmed by TEM analysis. Neodymium doping introduces band gap narrowing in the prepared samples and enhances their absorption towards the visible-light region. The photocatalytic activity of all the samples was evaluated by monitoring the degradation of methylene blue solution under day light illumination and it was found that the photocatalytic activity significantly increases for the samples calcined at 600 than 400°C, which is due to the effective charge separation of photogenerated electron–hole pairs. The efficiency of photocatalysts was found to be related to neodymium doping percentage and calcination temperature.