Visible-Light Induced Photodegradation of Methyl Orange via Palladium Nanoparticles Anchored to Chrome and Nitrogen Doped TiO2 Nanoparticles

The Cr/N–TiO 2 and Pd/Cr/N–TiO 2 were synthesized via sol–gel and photoreduction techniques respectively. Subsequently, optimized samples were utilized as photocatalyst agent to degradation of methyl orange under visible light. Tetraisopropyl orthotitanate, chromium nitrate Cr(NO3) 3 ·9H 2 O, pallad...

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Bibliographic Details
Published in:Journal of inorganic and organometallic polymers and materials 2019-09, Vol.29 (5), p.1457-1465
Main Authors: Mohammad-Salehi, Hanieh, Hamadanian, Masood, Safardoust-Hojaghan, Hossein
Format: Article
Language:English
Subjects:
Catalytic activity
Chemistry
Chemistry and Materials Science
Chromium
Dyes
Fourier transforms
Inorganic Chemistry
Morphology
Nanoparticles
Nitrogen
Organic Chemistry
Palladium
Photocatalysis
Photochemistry
Photodegradation
Polymer Sciences
Reflectance
Sol-gel processes
Titanium dioxide
Triethylamine
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Summary:The Cr/N–TiO 2 and Pd/Cr/N–TiO 2 were synthesized via sol–gel and photoreduction techniques respectively. Subsequently, optimized samples were utilized as photocatalyst agent to degradation of methyl orange under visible light. Tetraisopropyl orthotitanate, chromium nitrate Cr(NO3) 3 ·9H 2 O, palladium nitrate Pd(NO 3 ) 2 and triethylamine was used as precursors. The crystalline structure, morphology, particle size, absorbance, band-gap and chemical structure of samples were characterized by X-ray diffraction, diffuse reflectance spectra, scanning electron microscopy, energy dispersive spectrometry and Fourier transform infrared (FT-IR) techniques, respectively. Results demonstrate that nature and amount of dopant affect photocatalytic activity. For degradation of methyl orange, optimum concentration of Cr 3+ and Pd was obtained 2% and 10% respectively. After 240 min, under visible light, photocatalytic efficiency of 2%Cr/2%N–TiO 2 was obtained 97.59%. Also, after 75 min, under ultra violet light, photocatalytic efficiency of 10%Pd/2%Cr/2%N–TiO 2 was obtained 97.56%.
ISSN:1574-1443
1574-1451
DOI:10.1007/s10904-019-01109-z