Band gap narrowing and photocatalytic studies of Nd3+ ion-doped SnO2 nanoparticles using solar energy

被引：23

作者：

Chandran, Dhanya ^{[1
]}

Nair, Lakshmi S. ^{[1
]}

Balachandran, S. ^{[2
]}

Babu, K. Rajendra ^{[1
]}

Deepa, M. ^{[3
]}

机构：

[1] Univ Kerala, Mahatma Gandhi Coll, Dept Phys, Pattom Palace PO, Thiruvananthapuram 695004, Kerala, India

[2] Univ Kerala, Mahatma Gandhi Coll, Dept Chem, Pattom Palace PO, Thiruvananthapuram 695004, Kerala, India

[3] Univ Kerala, Dept Phys, All Saints Coll, Chackai PO, Thiruvananthapuram 695007, Kerala, India

来源：

BULLETIN OF MATERIALS SCIENCE | 2016年 / 39卷 / 01期

关键词：

Band gap narrowing; photocatalytic activity; sol-gel process; tin oxide; OXIDE NANOPARTICLES; ZNO; DEGRADATION; PHOTOLUMINESCENCE; ANTIBACTERIAL; TEMPERATURE; SENSORS;

D O I：

10.1007/s12034-015-1142-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 400A degrees 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.

引用

页码：27 / 33

页数：7

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