Influence of optical band gap and particle size on the catalytic properties of Sm/SnO2-TiO2 nanoparticles

Shaghraf Javaid, Muhammad Akhyar Farrukh, Iqra Muneer, Maryam Shahid, Muhammad Khaleeq-Ur-Rahman, Ali Umar Akrajas

Research output: Contribution to journalArticle

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Abstract

Abstract In this work, samarium (Sm) supported on tin oxide-titanium oxide (SnO2/TiO2) nanoparticles (Sm/SnO2-TiO2) were synthesized by sol-gel, ultrasonic and hydrothermal methods; and the optical and catalytic properties of Sm/SnO2-TiO2 nanoparticles was observed. Effect of synthetic methods on nanoparticles size and percentage composition of anatase and rutile phase in TiO2 was evaluated. The Sm/SnO2-TiO2 nanoparticles were characterized by Transmission Electron Microscopy, Scanning Electron Microscopy, Energy Dispersive X-ray spectroscopy, Powder X-ray Diffraction, Thermogravimetric Analysis and Fourier Transmission Infrared Spectroscopy. However, UV-Vis and solid phase spectroscopy were used to determine the catalytic efficiency and optical band gap, respectively. It was found out that nanoparticles synthesized by sol-gel and hydrothermal method have small optical band gap as compare to nanoparticles synthesized by ultrasonic method and ultimately showed more catalytic activity toward degradation of dye due to red shift in the optical band gap (shifting of wavelength to visible region). A direct relationship between particle size and optical band gap was investigated. It was observed that Sm reduced the optical band gap and increased catalytic efficiency when supported on SnO2/TiO2.

Original languageEnglish
Article number3609
Pages (from-to)234-247
Number of pages14
JournalSuperlattices and Microstructures
Volume82
DOIs
Publication statusPublished - 2015

Fingerprint

Samarium
samarium
Optical band gaps
Particle size
Nanoparticles
nanoparticles
Sol-gels
ultrasonics
Ultrasonics
gels
Titanium oxides
Tin oxides
titanium oxides
anatase
red shift
rutile
X ray powder diffraction
Titanium dioxide
spectroscopy
tin oxides

Keywords

  • Band gap
  • Catalysis
  • Hydrothermal
  • Nanoparticles
  • Sol-gel
  • Ultrasonic

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Materials Science(all)

Cite this

Influence of optical band gap and particle size on the catalytic properties of Sm/SnO2-TiO2 nanoparticles. / Javaid, Shaghraf; Farrukh, Muhammad Akhyar; Muneer, Iqra; Shahid, Maryam; Khaleeq-Ur-Rahman, Muhammad; Akrajas, Ali Umar.

In: Superlattices and Microstructures, Vol. 82, 3609, 2015, p. 234-247.

Research output: Contribution to journalArticle

Javaid, Shaghraf ; Farrukh, Muhammad Akhyar ; Muneer, Iqra ; Shahid, Maryam ; Khaleeq-Ur-Rahman, Muhammad ; Akrajas, Ali Umar. / Influence of optical band gap and particle size on the catalytic properties of Sm/SnO2-TiO2 nanoparticles. In: Superlattices and Microstructures. 2015 ; Vol. 82. pp. 234-247.
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