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Title: Influence of Sm{sup 3+} ions on structural, optical and solar light driven photocatalytic activity of spinel MnFe{sub 2}O{sub 4} nanoparticles

Abstract

In this article, co-precipitation method was used to produce a series of samarium substituted manganese ferrite nanoparticles, MnFe{sub 2−x}Sm{sub x}O{sub 4} (x = 0.0, 0.5, 1.0, 1.5, 2.0) with oleic acid as surfactant. The effect of Sm{sup 3+} substitution and calcination temperature on the MnFe{sub 2}O{sub 4} was explored. The MnFe{sub 2−x}Sm{sub x}O{sub 4} sample calcinated at 973 K induced an enhanced optical behaviour. The influence of Sm{sup 3+} ions on cationic distribution and optical properties of MnFe{sub 2}O{sub 4} were probed by various physicochemical techniques. The presence of secondary orthorhombic (SmFeO{sub 3}) phase with initial cubic phase was confirmed by doublet peak in the X-ray diffraction pattern. The particle size distribution of MnFe{sub 0.5}Sm{sub 1.5}O{sub 4} sample was about 40 nm from HRTEM. The visible light absorption ability extended as Sm content was increased up to x = 1.5 in MnFe{sub 2}O{sub 4}. At an optimum concentration of Sm as x = 1.5 in MnFe{sub 2}O{sub 4}, photocatalyst exhibited decrease in energy band gap (1.64 eV); as a result effective visible light driven photocatalytic activity was achieved than the pure MnFe{sub 2}O{sub 4}. The MnSm{sub 1.5}Fe{sub 0.5}O{sub 4} sample exhibits pronounced photodegradation towards Rose Bengal with in 50 minmore » under direct sunlight illumination as energy input. The broad emission band is observed in the entire photoluminescence (PL) spectrum. Current study provides an excellent competency of rare earth substituted ferrite as a new class of photocatalyst and they found to be a beneficial in the field of environmental cleaning application. - Highlights: • MnSm{sub x}Fe{sub 2−x}O{sub 4} nanoparticles were synthesised by co-precipitation method. • The insertion of Sm{sup 3+} ion in the MnFe{sub 2}O{sub 4} spinel matrix shows an increase in lattice parameter. • The calcination temperature is sensitive knob for tuning the optical properties of the MnFe{sub 2−x}Sm{sub x}O{sub 4} photocatalyst. • The MnFe{sub 2−x}Sm{sub x}O{sub 4} calcinated at 973 K shows enhanced optical behaviour. • The composition MnFe{sub 0.5}Sm{sub 1.5}O{sub 4} showed substantial red shift in absorption edge with narrow band gap of 1.64 eV.« less

Authors:
 [1];  [2];  [3];  [1]; ; ;  [3]
  1. Department of Chemistry, Sahyadri Science College, Shimoga 577203, Karnataka (India)
  2. (India)
  3. Department of Studies and Research in Industrial Chemistry, School of Chemical Sciences, Kuvempu University, Shankaraghatta 577451, Karnataka (India)
Publication Date:
OSTI Identifier:
22742061
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 255; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CATALYSTS; LATTICE PARAMETERS; NANOPARTICLES; OLEIC ACID; OPTICAL PROPERTIES; ORTHORHOMBIC LATTICES; PARTICLE SIZE; PHOTOCATALYSIS; SAMARIUM IONS; SPINELS; TRANSMISSION ELECTRON MICROSCOPY; VISIBLE RADIATION; X-RAY DIFFRACTION

Citation Formats

Rashmi, Shankar K., Department of Studies and Research in Industrial Chemistry, School of Chemical Sciences, Kuvempu University, Shankaraghatta 577451, Karnataka, Naik, Halehatty Seethya Bhojya, E-mail: hsb_naik@rediffmail.com, Jayadevappa, Honnalli, Sudhamani, Chittanahalli N., Patil, Sunitha B., and Naik, Manjyanaik Madhukara. Influence of Sm{sup 3+} ions on structural, optical and solar light driven photocatalytic activity of spinel MnFe{sub 2}O{sub 4} nanoparticles. United States: N. p., 2017. Web. doi:10.1016/J.JSSC.2017.08.013.
Rashmi, Shankar K., Department of Studies and Research in Industrial Chemistry, School of Chemical Sciences, Kuvempu University, Shankaraghatta 577451, Karnataka, Naik, Halehatty Seethya Bhojya, E-mail: hsb_naik@rediffmail.com, Jayadevappa, Honnalli, Sudhamani, Chittanahalli N., Patil, Sunitha B., & Naik, Manjyanaik Madhukara. Influence of Sm{sup 3+} ions on structural, optical and solar light driven photocatalytic activity of spinel MnFe{sub 2}O{sub 4} nanoparticles. United States. doi:10.1016/J.JSSC.2017.08.013.
Rashmi, Shankar K., Department of Studies and Research in Industrial Chemistry, School of Chemical Sciences, Kuvempu University, Shankaraghatta 577451, Karnataka, Naik, Halehatty Seethya Bhojya, E-mail: hsb_naik@rediffmail.com, Jayadevappa, Honnalli, Sudhamani, Chittanahalli N., Patil, Sunitha B., and Naik, Manjyanaik Madhukara. Wed . "Influence of Sm{sup 3+} ions on structural, optical and solar light driven photocatalytic activity of spinel MnFe{sub 2}O{sub 4} nanoparticles". United States. doi:10.1016/J.JSSC.2017.08.013.
@article{osti_22742061,
title = {Influence of Sm{sup 3+} ions on structural, optical and solar light driven photocatalytic activity of spinel MnFe{sub 2}O{sub 4} nanoparticles},
author = {Rashmi, Shankar K. and Department of Studies and Research in Industrial Chemistry, School of Chemical Sciences, Kuvempu University, Shankaraghatta 577451, Karnataka and Naik, Halehatty Seethya Bhojya, E-mail: hsb_naik@rediffmail.com and Jayadevappa, Honnalli and Sudhamani, Chittanahalli N. and Patil, Sunitha B. and Naik, Manjyanaik Madhukara},
abstractNote = {In this article, co-precipitation method was used to produce a series of samarium substituted manganese ferrite nanoparticles, MnFe{sub 2−x}Sm{sub x}O{sub 4} (x = 0.0, 0.5, 1.0, 1.5, 2.0) with oleic acid as surfactant. The effect of Sm{sup 3+} substitution and calcination temperature on the MnFe{sub 2}O{sub 4} was explored. The MnFe{sub 2−x}Sm{sub x}O{sub 4} sample calcinated at 973 K induced an enhanced optical behaviour. The influence of Sm{sup 3+} ions on cationic distribution and optical properties of MnFe{sub 2}O{sub 4} were probed by various physicochemical techniques. The presence of secondary orthorhombic (SmFeO{sub 3}) phase with initial cubic phase was confirmed by doublet peak in the X-ray diffraction pattern. The particle size distribution of MnFe{sub 0.5}Sm{sub 1.5}O{sub 4} sample was about 40 nm from HRTEM. The visible light absorption ability extended as Sm content was increased up to x = 1.5 in MnFe{sub 2}O{sub 4}. At an optimum concentration of Sm as x = 1.5 in MnFe{sub 2}O{sub 4}, photocatalyst exhibited decrease in energy band gap (1.64 eV); as a result effective visible light driven photocatalytic activity was achieved than the pure MnFe{sub 2}O{sub 4}. The MnSm{sub 1.5}Fe{sub 0.5}O{sub 4} sample exhibits pronounced photodegradation towards Rose Bengal with in 50 min under direct sunlight illumination as energy input. The broad emission band is observed in the entire photoluminescence (PL) spectrum. Current study provides an excellent competency of rare earth substituted ferrite as a new class of photocatalyst and they found to be a beneficial in the field of environmental cleaning application. - Highlights: • MnSm{sub x}Fe{sub 2−x}O{sub 4} nanoparticles were synthesised by co-precipitation method. • The insertion of Sm{sup 3+} ion in the MnFe{sub 2}O{sub 4} spinel matrix shows an increase in lattice parameter. • The calcination temperature is sensitive knob for tuning the optical properties of the MnFe{sub 2−x}Sm{sub x}O{sub 4} photocatalyst. • The MnFe{sub 2−x}Sm{sub x}O{sub 4} calcinated at 973 K shows enhanced optical behaviour. • The composition MnFe{sub 0.5}Sm{sub 1.5}O{sub 4} showed substantial red shift in absorption edge with narrow band gap of 1.64 eV.},
doi = {10.1016/J.JSSC.2017.08.013},
journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = ,
volume = 255,
place = {United States},
year = {2017},
month = {11}
}