Enhanced photocatalytic performance of V2O5-TiO2 nanocomposites synthesized by mechanical alloying with morphological hierarchy

V 2 O 5 -TiO 2 nanocomposites with different morphological variations have been synthesized by a one-step mechanical alloying method for the first time. The surface morphologies of all the synthesized composites are revealed from their respective FESEM images. Detailed microstructure characterizatio...

Full description

Saved in:
Bibliographic Details
Published in:New journal of chemistry 2019, Vol.43 (6), p.284-2816
Main Authors: Mandal, Rajib Kumar, Kundu, Samapti, Sain, Sumanta, Pradhan, Swapan Kumar
Format: Article
Language:English
Subjects:
Absorption spectra
Aqueous solutions
Brookite
Current carriers
Hydrogen peroxide
Mechanical alloying
Microstructure
Morphology
Nanocomposites
Optical properties
Photocatalysis
Photodegradation
Rhodamine
Rietveld method
Spectrum analysis
Synthesis
Titanium dioxide
Vanadium pentoxide
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:V 2 O 5 -TiO 2 nanocomposites with different morphological variations have been synthesized by a one-step mechanical alloying method for the first time. The surface morphologies of all the synthesized composites are revealed from their respective FESEM images. Detailed microstructure characterization of these composites has been carried out by analyzing XRD patterns employing the Rietveld refinement method, HRTEM images and FTIR spectra. The existence of a less-abundant brookite TiO 2 phase in the V 2 O 5 -TiO 2 nanocomposites has been confirmed for the first time by microstructure characterization, HRTEM and FTIR spectrum analysis. The optical properties of all the nanocomposites have been investigated by analyzing their respective UV-Vis absorption spectra. The photocatalytic degradation of Rhodamine B under visible light in presence of 15 h milled V 2 O 5 -TiO 2 nanocomposite has been enhanced significantly to ∼89% with the addition of 1 mL of H 2 O 2 to the aqueous solution, in comparison with both nanocrystalline TiO 2 and V 2 O 5 . This is presumed to be due to both the synergistic effects of TiO 2 and V 2 O 5 and the reduction in the recombination of charge carriers in presence of H 2 O 2 . Photocatalytic mechanism of V 2 O 5 -TiO 2 nanocomposites with a leaf like morphology synthesized for the first time by mechanical alloying.
ISSN:1144-0546
1369-9261
DOI:10.1039/c8nj05576a