Bio-inspired route for the synthesis of spherical shaped MgO:Fe3+ nanoparticles: Structural, photoluminescence and photocatalytic investigation

被引：48

作者：

Anilkumar, M. R. ^{[1
]}

Nagaswarupa, H. P. ^{[1
]}

Nagabhushana, H. ^{[2
]}

Sharma, S. C. ^{[3
]}

Vidya, Y. S. ^{[4
]}

Anantharaju, K. S. ^{[1
]}

Prashantha, S. C. ^{[1
]}

Shivakuamra, C. ^{[5
]}

Gurushantha, K. ^{[1
]}

机构：

[1] East West Inst Technol, Dept Sci, Res Ctr, Bangalore 560091, Karnataka, India

[2] Tumkur Univ, Prof CNR Rao Ctr Adv Mat, Tumkur 572103, India

[3] Dayananda Sagar Univ, Bangalore 560078, Karnataka, India

[4] Lal Bahadur Shastry Govt First Grade Coll, Dept Phys, Bangalore 560032, Karnataka, India

[5] Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, Karnataka, India

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2015年 / 149卷

关键词：

Green synthesis; Aloe vera gel; MgO:Fe3+ NPs; Photocatalysis; Photoluminescence; MEDIATED GREEN SYNTHESIS; OXIDE THIN-FILMS; OPTICAL-PROPERTIES; CALCINATION TEMPERATURE; TIO2; FE; DEGRADATION; MICROSTRUCTURE; FABRICATION; PHOSPHORS;

D O I：

10.1016/j.saa.2015.05.003

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

MgO:Fe3+ (0.1-5 mol%) nanoparticles (NPs) were synthesized via eco-friendly, inexpensive and simple low temperature solution combustion route using Aloe vera gel as fuel. The final products were characterized by SEM, TEM and HRTEM. PXRD data and Rietveld analysis revealed the formation of cubic system. The influence of Fe3+ ion concentration on the structure morphology, UV absorption, PL emission and photocatalytic activity of MgO:Fe3+ NPs were investigated. The yellow emission with CIE chromaticity coordinates (0.44, 0.52) and average correlated color temperature value was found to be 3540 K which corresponds to warm light of NPs. The control of Fe3+. on MgO matrix influences the photocatalytic decolorization of methylene blue (MB) under UV light. The enhanced photocatalytic activity of MgO:Fe3+ (4 mol%) was attributed to dopant concentration, effective crystallite size, textural properties, decreased band gap and capability for reducing the electron hole pair recombination. Further, the trends of inhibitory effect in the presence of different radical scavengers were explored. These findings open up new avenues for the exploration of Fe-doped MgO in eco-friendly water applications and in the process of display devices. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：703 / 713

页数：11

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